Supervertaler - Frequently Asked Questions

Current Version: v1.9.74 (December 31, 2025) Framework: PyQt6 Last Updated: January 1, 2026

Welcome to the Supervertaler FAQ! Find answers to common questions about installation, features, workflow, and troubleshooting.

📑 Table of Contents

About Supervertaler
Getting Started
Features & Capabilities
Technical Questions
Workflow & Integration
Troubleshooting
Project Management
Development & Community
Privacy & Commercial Use
More Resources
- Where can I learn more?
- What's next for Supervertaler?
Need More Help?

About Supervertaler

What is Supervertaler?

Supervertaler is The Ultimate Translation Workbench. It works alongside your CAT tool (memoQ, Trados, CafeTran) to provide:

AI-enhanced translation with GPT-4, Claude, and Gemini
Project termbases with automatic term extraction
Translation memory with fuzzy matching
Supervertaler Assistant for conversational AI help
Voice dictation (100+ languages via Whisper)
Prompt Manager with 38+ built-in prompts
CAT tool integration (memoQ, Trados, CafeTran)

Think of it as a professional CAT tool that specializes in AI integration and prompt management, designed to complement (not replace) your existing workflow.

Who created Supervertaler?

Michael Beijer - Professional translator and language technology enthusiast
Website: michaelbeijer.co.uk
GitHub: github.com/michaelbeijer/Supervertaler

Developed with assistance from Claude AI (Anthropic) using collaborative human-AI coding:

Michael: Translation expertise, workflow design, feature requirements
Claude: Implementation, architecture, debugging, optimization
Framework: PyQt6 (modern Python GUI)
Language: Python 3.10+

Who is Supervertaler for?

Primary Users:

Professional translators seeking AI-enhanced workflows
CAT tool users wanting better AI integration
Freelance translators managing multiple language pairs
Translation agencies handling diverse projects
Anyone needing advanced prompt management for translation

Not For:

Casual users needing quick Google Translate-style translation
Users unwilling to manage Python/command-line tools
Those seeking fully automated, zero-configuration translation

How does Supervertaler compare to other translation tools?

vs. DeepL/Google Translate:

✅ Multi-provider AI (Claude, GPT-4, Gemini) vs single engine
✅ Custom prompts and instructions vs generic translation
✅ Translation memory and termbase integration
✅ Project-based workflow with status tracking
⚠️ Requires API keys (paid) vs free web interface

vs. CAT Tools (memoQ, Trados):

✅ Works alongside CAT tools as companion
✅ Better AI integration with prompt management
✅ Conversational Supervertaler Assistant for AI help
✅ Voice dictation built-in (100+ languages)
⚠️ Not a full CAT tool replacement (no alignment, LiveDocs, etc.)

vs. AI Translation Plugins:

✅ Provider-agnostic (switch between OpenAI, Claude, Gemini)
✅ Open source - audit and customize the code
✅ Advanced features: Superbench, Supervertaler Assistant, project termbases
✅ No vendor lock-in or monthly subscriptions

Unique Selling Points:

2-Layer Prompt Architecture with AI-generated custom prompts
Project Termbases with automatic term extraction
Supervoice - F9 voice dictation in 100+ languages
Superbench - Benchmark AI models on YOUR projects
Universal Lookup - Ctrl+Alt+L system-wide TM search

Getting Started

What do I need to run Supervertaler?

System Requirements:

OS: Windows 10/11, macOS 10.13+, or Linux
Python: 3.10+
RAM: 4GB minimum, 8GB recommended
Disk: ~500 MB
Internet: Required for AI API calls

Required API Key (at least one):

Anthropic Claude (recommended): https://console.anthropic.com/
OpenAI GPT: https://platform.openai.com/
Google Gemini: https://aistudio.google.com/

Installation:

bash

# Clone or download from GitHub
git clone https://github.com/michaelbeijer/Supervertaler.git
cd Supervertaler

# Install dependencies
pip install -r requirements.txt

# Setup API keys
cp api_keys.example.txt api_keys.txt
# Edit api_keys.txt with your keys

# Launch
python Supervertaler.py

See Installation for detailed instructions.

How much does it cost?

Supervertaler Itself:

✅ 100% Free - MIT License, open source
✅ No subscriptions, no hidden fees
✅ Commercial use allowed

AI API Costs (Pay-as-you-go):

Claude 3.5 Sonnet: ~$3 per million input tokens, $15 per million output tokens
GPT-4o: ~$2.50 per million input tokens, $10 per million output tokens
Gemini 2.0 Flash: Generous free tier, then ~$0.075/$0.30 per million tokens

Typical Costs:

Average project (10,000 words): $0.50 - $2.00
Heavy user (100,000 words/month): $5 - $20/month
Much cheaper than DeepL Pro ($9.49/month) or CAT tool subscriptions

How do I install Supervertaler?

bash

# 1. Install Python 3.10+ from python.org

# 2. Download Supervertaler
git clone https://github.com/michaelbeijer/Supervertaler.git
cd Supervertaler

# 3. Install dependencies
pip install -r requirements.txt

# 4. Setup API keys
cp api_keys.example.txt api_keys.txt
# Edit api_keys.txt with your keys

# 5. Launch
python Supervertaler.py

Full guide: Installation

How do I get API keys?

Anthropic Claude (Recommended):

Visit: https://console.anthropic.com/
Sign up or log in
Settings → API Keys → "Create Key"
Copy key (starts with sk-ant-api03-...)
Add to api_keys.txt: ANTHROPIC_API_KEY=sk-ant-api03-...

OpenAI GPT:

Visit: https://platform.openai.com/
Sign up or log in
API Keys section → "Create new secret key"
Copy key (starts with sk-proj-... or sk-...)
Add to api_keys.txt: OPENAI_API_KEY=sk-proj-...

Google Gemini:

Visit: https://aistudio.google.com/
Sign up or log in
Click "Get API Key"
Copy key (starts with AIza...)
Add to api_keys.txt: GOOGLE_API_KEY=AIza...

Security Tip: Never commit api_keys.txt to version control!

Features & Capabilities

What are the key features of v1.9.27?

📄 Simple Text File Import/Export (NEW in v1.9.27)

Import plain text files where each line becomes a source segment
Export translations as matching text file with target text
UTF-8, Latin-1, Windows-1252 encoding support with auto-detection
Perfect for translating simple line-by-line text content
File → Import → Simple Text File (TXT) / File → Export → Simple Text File - Translated (TXT)

🔄 Automatic Model Version Checker (v1.9.26)

Auto-detects new LLM models from OpenAI, Anthropic, and Google
Checks once per 24 hours on startup (configurable)
Popup dialog with easy model selection when new models detected
Settings → AI Settings → Model Version Checker
Manual "Check for New Models Now" button

🎨 UI Standardization (NEW in v1.9.26)

All checkboxes standardized to green with white checkmark design
Refined 16x16px size for cleaner, modern appearance
Consistent visual language throughout entire application

📁 Custom File Extensions (v1.9.6)

Branded file extensions: .svproj (projects), .svprompt (prompts), .svntl (non-translatables)
Full backward compatibility - opens legacy .json, .md, .ntl files
Industry standards retained: .tmx for TM exports

🌐 Monolingual DOCX Import (v1.9.6)

Language pair selection dialog when importing monolingual DOCX files
Explicitly set source and target languages (12 languages supported)
No more unreliable auto-detection

📤 Target-Only DOCX Export (v1.9.6)

Export > Target Only (DOCX)... preserves original document structure
Tables, formatting, styles, headers/footers all preserved
Original DOCX path saved in project for reliable exports

📤 Send Segments to TM (v1.9.5)

Bulk send translated segments to Translation Memories
Access via Edit > Bulk Operations > Send Segments to TM
Filter by scope: All segments, Current selection, or row range
Filter by status: Translated, Reviewed, Approved, Needs Review, Final
Select multiple TMs to write to simultaneously

🏷️ memoQ Tag Shortcuts (v1.9.5)

Ctrl+, - Insert next memoQ tag pair or wrap selection with tags
Smart detection of memoQ tags from source: [1}, {1], [3], etc.
With selection: Wraps text with next unused tag pair
Without selection: Inserts tag pair at cursor position

🏷️ Tag-Based Formatting System (v1.9.4)

Import memoQ bilingual DOCX preserves bold/italic/underline as , ,  tags
Toggle between WYSIWYG and Tag view with Ctrl+Alt+T
Ctrl+B/I/U shortcuts to apply formatting tags to selected text
AI translation preserves and repositions tags intelligently
Export converts tags back to Word formatting

🔍 Filter Highlighting (v1.7.8)

Type search term in "Filter Source" or "Filter Target" box
Matching segments highlighted in yellow
Case-insensitive, supports multiple matches per cell
Press Enter to apply filter

🎯 Termbase Display Customization (v1.7.7)

Sort termbase matches: order of appearance, alphabetical, or by length
Hide shorter matches contained within longer terms
Settings → General → TM/Termbase Options

📚 Project Termbases (v1.7.0)

One dedicated termbase per project
Automatic term extraction from source segments
Pink highlighting for project terms vs blue for background termbases
Extract Terms button in Termbases tab

💾 Auto-Backup System (v1.7.6)

Configurable intervals (1-60 minutes, default 5 min)
Automatic project.json and TMX backups
Never lose your work during translation

💬 Supervertaler Assistant

Conversational AI interface in the AI tab
Analyze documents and generate custom prompts
Attach files (PDF, DOCX, TXT, MD) for context
Ask questions about segments and terminology

🎤 Supervoice Voice Dictation

F9 global hotkey (press-to-start/stop)
100+ language support via OpenAI Whisper
5 model sizes (tiny to large)
Dictate directly into target cells

📊 Superbench (LLM Benchmarking)

Test GPT-4o, Claude, Gemini on YOUR projects
chrF++ scoring with adaptive segment sampling
Excel export with side-by-side comparison
Find best model for your language pair/domain

💾 Translation Memory

SQLite-based TM with FTS5 full-text search
Fuzzy matching with visual diff
TMX import/export
Auto-propagation of exact matches

🔍 Universal Lookup

Ctrl+Alt+L system-wide hotkey
Search TM from ANY application
Instant terminology lookup
Works in Word, browser, email, etc.

📝 TMX Editor

Database-backed professional TMX editor
Handle massive 1GB+ TMX files
Filter, search, bulk edit entries

What are the three view modes?

Supervertaler previously offered three editing views. Current versions focus on a single primary editing workflow: the Grid View.

1. Grid View (Default)

Spreadsheet-like segment editor
Columns: #, Source, Target, Status
Inline editing, multi-selection
Best for: segment-by-segment translation

Note: Document/List views were removed during cleanup because the grid workflow is the core production workflow.

What is the Prompt Manager?

2-Layer Prompt Architecture:

Layer 1: System Prompts

Core translation infrastructure
CAT tag handling, formatting rules
Settings → System Prompts

Layer 2: Custom Prompts

38+ built-in prompts in organized folders
Domain expertise (Legal, Medical, Financial, Technical)
Project-specific instructions
Style guides

Key Features:

Multi-attach: Combine multiple prompts
Favorites: Star frequently-used prompts
AI-generated: Ask the Supervertaler Assistant to create prompts
Unlimited folders: Organize your way

Usage:

AI tab → Prompt Manager → Browse folders
Right-click prompt → "Set as Primary" or "Attach"
Translate normally - prompts automatically applied

See: Prompt Manager

What is figure/image context support?

Load images to provide visual context for AI translation - essential for technical documents.

How it works:

Prepare folder with images: Figure 1.png, Figure 2A.jpg, etc.
Resources → 🖼️ Load Figure Context → Select folder
When AI detects "Figure 1" in text, it includes the image automatically
AI can "see" diagrams, understand part numbers, spatial relationships

Example:

Text: "As shown in Figure 1A, the motor (12) connects to shaft (14)..."
AI receives: Text + Image of Figure 1A
Result: Accurate translation of technical details with visual understanding

Supported formats: PNG, JPG, JPEG, WEBP, GIF, BMP, TIFF

How does the translation memory work?

SQLite-based TM:

Full-text search with FTS5
Fuzzy matching algorithm
Stores source + target + metadata

Features:

Auto-save: Confirmed segments saved to active TMs
Fuzzy matching: 70-99% matches with visual diff
Multiple TMs: Activate/deactivate per project
TMX import/export: Standard format compatibility

Match display:

100% match: Green
95-99% match: Light green with diff highlighting
70-94% match: Yellow with diff highlighting
Match shortcuts: Ctrl+1-9 to insert

Settings:

Settings → TM/Termbase Options
Enable/disable matching
Configure auto-propagation

How do keyboard shortcuts work?

Main Translation:

F5: Translate selected segments (or active segment if none selected)
F9: Start/stop voice dictation (global hotkey - works in any app)
Ctrl+Alt+L: Universal Lookup (system-wide TM search)
Ctrl+P: Open Prompt Manager

Navigation:

Ctrl+1/2/3: Switch between Grid/Document/List views
Arrow keys: Navigate between segments in Grid view
Page Up/Down: Scroll through segments

Editing:

Double-click cell: Edit segment in-place (Grid view)
Ctrl+C/V: Copy/paste segments
Ctrl+F: Find & Replace dialog
Ctrl+Z: Undo (where supported)

TM Shortcuts:

Ctrl+1-9: Insert TM match (1=best match, 2=second best, etc.)
Ctrl+M: Show TM matches for active segment

Formatting (v1.9.4+):

Ctrl+B: Apply/toggle bold tags ...
Ctrl+I: Apply/toggle italic tags ...
Ctrl+U: Apply/toggle underline tags ...
Ctrl+Alt+T: Toggle Tag view (show/hide formatting tags)
Ctrl+,: Insert memoQ tag pair or wrap selection with tags

Project:

Ctrl+S: Save project
Ctrl+O: Open project
Ctrl+N: New project

See: Full keyboard shortcut list in Keyboard Shortcuts

What is CAT tag handling?

What are CAT tags?

Formatting markers from CAT tools: text, {1}, [tag]
Represent bold, variables, placeholders, etc.
Must be preserved exactly in translation

How Supervertaler handles them:

Detection: System prompts identify common CAT tag patterns
Instruction: AI told to preserve ALL tags unchanged
Validation: Tags verified after translation (future feature)
Recovery: If AI modifies tags, manual correction needed

Supported tag formats:

XML-style: <tag>content</tag>
Curly braces: {1}, {placeholder}
Square brackets: [tag], [0]
memoQ: {0>text<0}, {1/}
Trados: <cf>, <c0>content</c0>

Best practice:

Use specialized system prompts (memoQ, Trados, etc.)
Review tag preservation after AI translation
Lock segments with complex tags after confirming correctness

Technical Questions

What AI models are supported?

OpenAI:

GPT-4o (recommended - best balance of speed/quality)
GPT-4 Turbo
GPT-4
GPT-3.5 Turbo (economical option)

Anthropic Claude:

Claude 3.5 Sonnet (excellent for translation)
Claude 3.5 Haiku (fast and economical)
Claude 3 Opus (highest capability, slower)
Claude 3 Sonnet
Claude 3 Haiku

Google Gemini:

Gemini 1.5 Pro (2M token context window)
Gemini 1.5 Flash (cost-effective)
Gemini 2.0 Flash Exp (experimental)

Recommendations:

Best Quality: Claude 3.5 Sonnet, GPT-4o
Best Value: Gemini 1.5 Flash, Claude 3.5 Haiku
Best Context: Gemini 1.5 Pro (2M tokens)
General Use: GPT-4o or Claude 3.5 Sonnet

Test models with Superbench to find best for your language pair/domain!

How does AI translation work in Supervertaler?

Context Provision: Supervertaler provides AI with multiple layers of context:

Document context: Surrounding segments for coherence
Translation Memory: Fuzzy matches from active TMs
Termbase matches: Relevant terminology highlighted
System prompt: CAT tag handling instructions
Custom prompts: Domain expertise, style guides
Figure context: Images referenced in technical documents

Translation Process:

You select segments and press F5 (or Translate button)
Supervertaler assembles context: TM matches, termbase, prompts, figures
Sends source + context to AI API
AI generates translation following all instructions
Translation inserted into target cell
Confirmed segments auto-saved to active TMs

Why this approach is powerful:

AI understands document flow and terminology
Maintains consistency with your TM and termbases
Adapts to domain-specific requirements
Preserves CAT tags and formatting
Cost-effective: only translates what you need

What file formats are supported?

Import Formats:

DOCX: Microsoft Word documents (segment by paragraph)
TXT: Plain text files (segment by line or paragraph)
TMX: Translation Memory eXchange format
XLIFF: XML Localization Interchange File Format
JSON: Project files (.json)
Images: PNG/JPG/JPEG/WEBP/GIF/BMP/TIFF (figure context)

Export Formats:

DOCX: Microsoft Word with translations
TMX: Translation memory export
XLIFF: XML format for CAT tools
TXT: Plain text export
Excel (XLSX): Spreadsheet with source/target columns

CAT Tool Integration:

CafeTran bilingual DOCX (import/export)
memoQ bilingual DOCX (import/export)
Universal TMX (all CAT tools)
XLIFF (most CAT tools)

What programming language is it built with?

Primary: Python 3.8+

Key Libraries:

PyQt6: Modern GUI framework
SQLite3: Translation memory database
python-docx: DOCX file handling
lxml: XLIFF and XML processing
openai: OpenAI API client
anthropic: Claude API client
google-generativeai: Gemini API client
openai-whisper (optional): Offline/local voice dictation (very large dependency; installs PyTorch). The default/recommended path uses the OpenAI Whisper API via openai.
Pillow (PIL): Image processing for figure context

Architecture:

Modular design: 50+ modules in modules/ folder
Main file: Supervertaler.py (21,600+ lines)
Database-backed TM with FTS5 full-text search
Event-driven UI with PyQt6 signals/slots

Why Python?

Rapid development
Excellent AI/ML library ecosystem
Cross-platform (Windows/Mac/Linux)
Easy to read and contribute to

Can I use Supervertaler offline?

Partially:

Online Features (require internet):

AI translation via OpenAI/Claude/Gemini APIs
Superbench model testing
Supervertaler Assistant (document analysis, prompt generation)

Offline Features:

Edit existing translations in Grid/Document/List views
Search TM and termbases (if already loaded)
Export to DOCX/TMX/XLIFF
TMX Editor (work with TM files)
Project management
All UI features except AI translation

Voice Dictation (Supervoice):

Fully offline if using "tiny" or "base" Whisper models
Downloads once, runs locally on your machine
No internet required after initial model download

Local LLM (Ollama):

Fully offline AI translation on your own computer
No API keys or internet required
Complete privacy - your text never leaves your machine
See "How do I set up Local LLM?" below

How do I set up Local LLM (Ollama)?

Local LLM allows you to run AI translation entirely on your computer - no API costs, complete privacy, works offline.

Step 1: Install Ollama

Download Ollama from https://ollama.com
Run the installer (Windows/Mac/Linux supported)
Ollama starts automatically in the background

Step 2: Download a Model Open a terminal/command prompt and run:

bash

# Recommended — purpose-built translation model (12GB+ RAM):
ollama pull translategemma:12b

# For 24GB+ RAM (highest translation quality):
ollama pull translategemma:27b

# For 6GB RAM (lighter, still translation-tuned):
ollama pull translategemma:4b

Step 3: Configure Supervertaler

Go to Settings → LLM Settings
Select "🖥️ Local LLM (Ollama)" as your provider
Choose your downloaded model from the dropdown
Click Save LLM Settings

Model Recommendations by RAM:

RAM	Recommended Model	Quality
4 GB	qwen3:4b	★★★☆☆
6 GB	translategemma:4b	★★★★☆
12 GB	translategemma:12b	★★★★★
24 GB+	translategemma:27b	★★★★★

Tips:

First translation may take 30-60 seconds (model loading)
Subsequent translations are much faster
Use the Setup... button in Settings for guided installation
GPU acceleration is automatic if you have NVIDIA/AMD GPU

What are the system requirements?

Minimum:

OS: Windows 10/11, macOS 10.15+, or Linux
Python: 3.8 or higher
RAM: 4 GB (8 GB recommended for large projects)
Disk: 500 MB for application + space for TM/projects
Internet: Required for AI translation

Recommended:

RAM: 8 GB or more
CPU: Multi-core processor for faster processing
Disk: SSD for faster TM searches
Display: 1920x1080 or higher resolution

For Voice Dictation (Supervoice):

RAM: 8 GB minimum (16 GB for "large" model)
Disk: 1-3 GB for Whisper models (varies by size)
Microphone: Any USB or built-in microphone

For Local LLM (Ollama):

RAM: 4 GB minimum (8 GB+ recommended)
Disk: 2-10 GB per model (varies by size)
GPU: Optional but recommended (NVIDIA/AMD for faster inference)
Internet: Only needed for initial model download

For Superbench:

Multiple API keys (GPT-4o, Claude, Gemini)
Sufficient API credits for testing runs

Why is my antivirus flagging Supervertaler as malware?

This is a known false positive that affects applications built with PyInstaller (the tool used to create the Windows EXE).

Why it happens:

PyInstaller bundles Python + all libraries into a single package
This binary pattern triggers heuristic detection in some AV software (especially Norton 360)
Generic detections like "Win64:Malware-gen" are pattern matches, not actual malware signatures
The executable is not code-signed (certificates cost ~$300/year)

Solutions:

Use pip install (Recommended)
- Install: pip install supervertaler
- Run: supervertaler
- No AV warnings because it runs from Python source
Whitelist the application
- Add an exception in your antivirus settings
- The application is safe - you can verify by checking the source code on GitHub
Report as false positive
- Norton: https://submit.norton.com/
- Windows Defender: Click "More info" → "Run anyway"
- Other AV: Check vendor's false positive submission page

This is common for PyInstaller apps - it affects tools like Calibre, many game mods, and scientific software. See the PyInstaller FAQ for more details.

Workflow & Integration

How do I integrate Supervertaler with my CAT tool?

Method 1: TMX Exchange (Most Compatible)

In CAT tool: Export source segments as TMX
In Supervertaler: Import TMX → Translate → Export TMX
In CAT tool: Import translated TMX
Result: Target segments populated in your CAT project

Method 2: XLIFF (Standard)

In CAT tool: Export XLIFF file
In Supervertaler: Import XLIFF → Translate → Export XLIFF
In CAT tool: Import translated XLIFF
Result: Translations with segment metadata preserved

Method 3: Copy-Paste (Quick)

In CAT tool: Copy source segments
In Supervertaler: Paste as TXT → Import → Translate → Copy targets
In CAT tool: Paste translations
Result: Fast but manual, no metadata

Method 4: CAT Tool-Specific

CafeTran: Bilingual DOCX import/export
memoQ: Bilingual DOCX import/export
Check documentation for CAT tool-specific formats

What's the typical translation workflow?

Quick Translation (Simple Document):

Launch Supervertaler
File → Import → Select DOCX or TXT
Select segments (or Ctrl+A for all)
Press F5 to translate
Review and edit translations
File → Export → DOCX

Professional Project Workflow:

Setup:
- Create new project (Ctrl+N)
- Import document (DOCX/XLIFF/TMX)
- Activate relevant TMs (TM tab)
- Activate termbases (Termbases tab)
- Select prompts (AI tab → Prompt Manager)
Translate:
- Select segments to translate
- Press F5
- AI translates with TM/termbase/prompt context
- Segments auto-saved to active TMs
Review & Edit:
- Switch to Document View for readability check
- Use Grid View for detailed editing
- Check termbase matches (blue/pink highlighting)
- Insert TM matches manually if preferred (Ctrl+1-9)
Quality Assurance:
- Search for specific terms (Ctrl+F)
- Check consistency of key terminology
- Review Supervertaler Assistant suggestions
Export & Deliver:
- Export to DOCX/TMX/XLIFF
- Save project (Ctrl+S) for future reference
- Deliver to client or reimport to CAT tool

Voice Dictation Workflow:

Press F9 to start dictating (works system-wide)
Speak your translation
Press F9 to stop and insert text
Edit as needed in Grid View

How do I handle large documents?

Strategy 1: Segment-by-Segment

Grid View with 50 segments per page
Translate one page at a time
Full control over progress
Best for: Documents requiring careful review

Strategy 2: Batch Translation

Select all segments (Ctrl+A)
Press F5 to translate all at once
AI processes in batches automatically
Best for: Clean source documents with good TM coverage

Strategy 3: Selective Translation

Use Filter Source/Target to find untranslated segments
Select filtered results
Translate only what's needed
Best for: Partially translated documents

Performance Tips:

Auto-backup saves progress every 5 minutes (default)
TM matching is fast (SQLite FTS5 full-text search)
Large projects (10,000+ segments) still load quickly
Export to TMX regularly as backup

Cost Management:

Use Superbench to test which model gives best value for your content
Consider using Gemini Flash (economical) for first draft
Then use Claude 3.5 Sonnet or GPT-4o for final polish
Check TM matches before translating (100% matches = free)

Can I customize the AI prompts?

Yes! The Prompt Manager provides complete control:

Built-in Prompts (38+):

Organized in folders: Legal, Medical, Financial, Technical, Creative, etc.
Domain-specific expertise pre-configured
Style guides for common requirements
CAT tag handling templates

Custom Prompts:

AI tab → Prompt Manager → Right-click folder → New Prompt
Write your instructions in plain language
Save to appropriate folder
Right-click prompt → "Set as Primary" or "Attach"

AI-Generated Prompts:

AI tab → Supervertaler Assistant → Attach document (PDF/DOCX)
Ask: "Analyze this style guide and create a prompt"
AI generates custom prompt based on document
Save and use for your projects

Multi-Attach:

Attach multiple prompts simultaneously
Example: Legal domain + Client style guide + Formality preference
All prompts combined and sent to AI

System Prompts:

Core CAT tag handling instructions
Manages formatting preservation
Edit in Settings → System Prompts

Variables:

{source_lang} - Automatically filled with source language
{target_lang} - Automatically filled with target language
{client_name} - Custom variable (if supported)

See: Prompt Manager for full details

How do I use Universal Lookup?

System-Wide TM Search:

Activate Universal Lookup: Settings → General → Enable Universal Lookup
Press Ctrl+Alt+L from ANY application (Word, browser, email, etc.)
Select text you want to look up
Press Ctrl+Alt+L
Supervertaler searches active TMs and shows matches in popup

Use Cases:

Check terminology while writing emails
Look up translations in Word documents
Verify terms while browsing source documents
Quick TM search without opening Supervertaler

Requirements:

Supervertaler running in background
At least one TM activated in TM tab
Text selected before pressing hotkey

Troubleshooting

Why is translation slow?

Common Causes:

Model choice: Claude 3 Opus, GPT-4 are slower than Flash/Haiku variants
Large context: Many TM matches, large document, figure images
Internet speed: Slow connection increases API response time
Provider rate limits: Some API plans throttle requests
Many segments: Translating 1000+ segments takes time

Solutions:

Try faster models: Gemini 1.5 Flash, Claude 3.5 Haiku, GPT-3.5 Turbo
Reduce context: Deactivate unused TMs, remove unnecessary termbases
Translate in batches: Select 50-100 segments at a time instead of all
Check internet: Use wired connection if possible
Upgrade API plan: Higher-tier plans have better rate limits

Use Superbench to test which model gives best speed/quality balance for your content!

API errors - what do they mean?

"Invalid API Key" / "Authentication Failed":

Check api_keys.txt for typos
Ensure format: openai_key=sk-... or anthropic_key=sk-ant-... or gemini_key=AI...
Verify key is active on provider dashboard
Check no extra spaces or quotes around key

"Rate Limit Exceeded":

Too many requests too quickly
Wait 1-2 minutes and retry
Upgrade to higher API tier for increased limits
Translate smaller batches

"Context Length Exceeded" / "Token Limit":

Document + TM matches + prompts + images exceed model's context window
Solution 1: Use model with larger context (Gemini 1.5 Pro: 2M tokens)
Solution 2: Translate fewer segments at once
Solution 3: Reduce number of TM matches shown
Solution 4: Remove figure context if not needed

"Insufficient Credits" / "Quota Exceeded":

API account out of credits
Add funds to provider billing dashboard
Check current balance and usage

"Connection Error" / "Timeout":

Internet connection lost
Firewall blocking API requests
Try different network or VPN
Check antivirus isn't blocking connections

Filter highlighting not working

Issue: Text doesn't highlight when I type in Filter Source/Target box

Solution:

Make sure you press Enter after typing search term
Filter applies when you press Enter, not automatically while typing
Check spelling of search term (case-insensitive but must match)

Issue: No results found but I know the term exists

Solution:

Ensure you're searching in correct column (Source vs Target)
Check for typos in search term
Try simpler search (single word instead of phrase)

Termbase matches not showing

Issue: Termbase loaded but no blue/pink highlighting

Solution:

Check termbase is activated: Termbases tab → Termbase checkbox should be checked
Ensure terms exist in termbase: Termbases tab → Right-click → View Terms
Check if source segments actually contain termbase terms
Try Extract Terms button if using project termbase

Issue: Too many/too few matches highlighted

Solution:

Settings → General → TM/Termbase Options
Adjust "Hide shorter matches" setting
Change sort order (appearance / alphabetical / length)
Create more specific termbase entries

Voice dictation (Supervoice) not working

Issue: F9 doesn't start recording

Solution:

Check Supervoice is enabled: Settings → General → Enable Supervoice
Ensure Whisper model is downloaded: First use downloads model automatically
Check microphone permissions (Windows: Settings → Privacy → Microphone)
Test microphone in other apps to verify it works

Issue: Recording starts but no text appears

Solution:

Wait a moment - processing takes a few seconds
Check if you spoke loudly/clearly enough
Try larger Whisper model (base or small instead of tiny)
Ensure microphone volume is adequate

Issue: Wrong language recognized

Solution:

Supervoice uses target language by default
Make sure target language is set correctly for your project
Some accents may be harder to recognize - try clearer pronunciation

Universal Lookup not working

Issue: Ctrl+Alt+L does nothing

Solution:

Check Universal Lookup is enabled: Settings → General → Enable Universal Lookup
Ensure Supervertaler is running (doesn't need to be focused window)
Make sure you selected text before pressing Ctrl+Alt+L
Check if another program is using the same hotkey

Issue: "No matches found"

Solution:

Ensure at least one TM is activated in TM tab
Check selected text actually exists in your TMs
Try selecting less text (single term instead of full sentence)

How do I report a bug?

Before Reporting:

Check if issue is already known: GitHub Issues
Update to latest version (current: v1.7.8)
Update Python libraries: pip install -r requirements.txt --upgrade

When Reporting:

Version info:
- Supervertaler version (shown in window title)
- Python version: python --version
- OS: Windows 10/11, macOS version, or Linux distro
Error details:
- Exact error message (screenshot if possible)
- Steps to reproduce the bug
- What you expected vs what happened
Context:
- Which feature were you using? (AI translation, voice dictation, TM, etc.)
- File formats involved (DOCX, TMX, XLIFF, etc.)
- Any relevant settings or configuration

Submit to: github.com/michaelbeijer/Supervertaler/issues

Response time: Typically 1-3 days depending on complexity

Project Management

What is a project file (.svproj)?

A .svproj file is a Supervertaler project file. It stores your segments (source/target), statuses, language pair, and per-project settings so you can close and continue later.

How do I save and reopen a project?

Save: Ctrl+S
Open: Ctrl+O

You can also use the File menu to save/open projects.

Does Supervertaler support multi-file projects?

Yes. You can import an entire folder of supported files as a single project via File → Import → Folder (Multiple Files).

Development & Community

Why was Supervertaler created?

Problem:

Existing CAT tools had limited or expensive AI integration
Needed flexible multi-provider access (OpenAI, Claude, Gemini)
Wanted custom prompt control and termbase integration
Required context-aware translation, not just sentence-by-sentence MT

Solution: Michael Beijer, a professional translator, created Supervertaler to:

Provide powerful AI translation with full context
Enable custom prompts and domain expertise
Support multiple AI providers (avoid vendor lock-in)
Integrate with existing CAT tools (TMX, XLIFF, bilingual DOCX)
Offer professional features (TM, termbases, voice dictation)
Share openly with translation community (open source)

Philosophy:

Human translator + AI assistant = best results
Flexibility over lock-in
Context matters for quality
Professional control essential
Transparent and customizable

What's the development history?

v1.0 - v1.5 (Early 2025):

Initial prototype with tkinter GUI
OpenAI GPT-4 translation
Basic DOCX import/export
Proof of concept

v1.6 (September 2025):

Migration to PyQt6 (modern GUI framework)
Complete UI rewrite
Professional CAT tool interface
Grid/Document/List views

v1.7.0 (October 2025):

Project termbases (dedicated termbase per project)
Improved TM fuzzy matching
Auto-backup system
UI refinements

v1.7.6 (November 2025):

Configurable auto-backup intervals
Enhanced error handling
Performance optimizations

v1.7.7 (November 2025):

Termbase display customization
Sort options (appearance/alphabetical/length)
Hide shorter matches setting

v1.7.8 (November 22, 2025):

Filter highlighting with yellow background
Bug fixes and stability improvements

v1.9.16 (December 2025):

Local LLM support (Ollama) - Run AI translation offline on your computer
No API keys needed for local models
Complete privacy - text never leaves your machine
Automatic hardware detection and model recommendations

v1.9.27 (December 9, 2025):

Simple Text File Import/Export - Import TXT files line-by-line, translate, export
Language pair selection and multiple encoding options
Perfect for simple text translation workflows

v1.9.26 (December 8, 2025):

Automatic Model Version Checker - Auto-detects new LLM models from providers
Daily checks with popup notifications for new models
Manual "Check Now" button in AI Settings
UI Standardization - All checkboxes use consistent green design (16x16px)
Cleaner, more professional appearance throughout application

Future Plans:

Advanced QA tools
Enhanced collaboration features
More CAT tool integrations
Machine learning for MT quality prediction

Why is it open source?

Benefits:

Transparency: No hidden data collection, all code inspectable
Community: Translators worldwide can contribute and improve
Customization: Adapt to your specific workflow needs
Trust: See exactly what the software does
Learning: Educational resource for AI-assisted development
Longevity: Community can maintain even if original developer moves on

License: Check LICENSE file in repository

Contributions Welcome:

Bug reports (GitHub Issues)
Feature requests
Code contributions (Pull Requests)
Documentation improvements
Translation of UI to other languages
Testing and feedback

Why the name "Supervertaler"?

Etymology:

"Vertaler" = "translator" in Dutch
"Super" = English prefix meaning "excellent/above"
"Supervertaler" ≈ "Super Translator"

Pronunciation:

Dutch: "SOO-per-fer-TAH-ler"
English: "SUPER-ver-TAY-ler" (close enough!)

Origin:

Created by Michael Beijer (Dutch translator)
Reflects Netherlands origin
Mix of English + Dutch = international appeal
Memorable and unique name

Privacy & Commercial Use

Is my translation data private?

Data Flow:

Source text sent to AI provider (OpenAI/Claude/Gemini) for translation
Translations received back from AI provider
No data sent to Supervertaler developers
All data stored locally on your computer

Privacy by Provider:

OpenAI: Does not train on API data (per policy as of 2025)
Anthropic: Does not train on API data (per policy)
Google Gemini: Check current API terms for data retention

Local Storage:

Projects: user_data/projects/
TMs: user_data/resources/
Termbases: user_data/resources/
All data remains on your machine

No Telemetry:

Supervertaler collects NO usage data
No analytics, no tracking
Open source: Verify in source code yourself

Best Practices for Sensitive Content:

Review AI provider data policies before using
Consider anonymizing client names, personal data
Use providers with strong privacy commitments
For highly confidential work, wait for local LLM support (future)
Keep local backups of all files

Are my website passwords stored by the embedded browser?

The Superlookup Web Resources tab includes an embedded browser that lets you search IATE, ProZ, Linguee, and other terminology sites without leaving Supervertaler. Here's what you need to know about security:

What's stored:

The embedded browser uses cookies to keep you logged in, not saved passwords
When you log in to a site (e.g., ProZ), the site sends a session cookie (a "remember me" token)
These cookies are stored in user_data/web_cache/ in Chromium's SQLite database format

What's NOT stored:

Your actual passwords are never saved by Supervertaler
Qt WebEngine (the embedded browser) does not have a built-in password manager like Chrome or Firefox
When a site "remembers" you, it's using session cookies, not your stored credentials

Security considerations:

Cookies are stored on disk and could theoretically be accessed by malware (same as any browser)
The cookies are in Chromium's format (SQLite), not plain text, but they're not encrypted on Windows
This is identical to how Chrome, Firefox, and Edge store cookies locally

Recommendations:

Don't use the embedded browser for highly sensitive accounts (banking, medical portals, etc.)
For terminology sites like ProZ, IATE, Linguee — the risk is minimal
If you're on a shared computer, delete user_data/web_cache/ to clear all sessions
For maximum security, use External browser mode in Superlookup settings — this opens links in your regular browser where you have full control over security settings

How to clear saved sessions:

Close Supervertaler
Delete the folder: user_data/web_cache/
Restart Supervertaler — you'll need to log in again to any sites

Can I use Supervertaler commercially?

Yes! Supervertaler is designed for professional commercial use.

Allowed:

Freelance translation work
Translation agencies
Corporate translation departments
Language service providers
Charge clients for your translation services

Requirements:

Own valid API keys (your personal or business account)
Comply with AI provider terms of service
Respect open source license (check LICENSE file)

Not Allowed:

Reselling Supervertaler itself as your own product
Removing author attribution/credits
Violating open source license terms

Commercial Support:

Community support via GitHub Issues (free)
No official paid support currently
Consider contributing to the project if you use it professionally

How can I support the project?

For Users:

⭐ Star the GitHub repository - Increases visibility
📢 Share with colleagues - Help other translators discover it
🐛 Report bugs - Detailed reports improve quality
💡 Suggest features - Share your workflow needs
📝 Improve documentation - Fix typos, add examples

For Developers:

🔧 Contribute code - Submit Pull Requests
🧪 Test beta features - Early testing catches bugs
🌍 Translate UI - Add support for more languages
📚 Write guides - Share your workflows and tips

For Everyone:

Use it professionally and share your experience!
Write blog posts or reviews
Help other users in GitHub Discussions

More Resources

Where can I learn more?

Core Documentation:

Repository Docs (GitHub):

Feature Guides:

Online:

GitHub: github.com/michaelbeijer/Supervertaler
Website: Supervertaler Documentation
Issues: Report bugs / Request features

What's next for Supervertaler?

Recently Added (selected recent versions):

✅ Simple Text File Import/Export - Line-by-line text translation
✅ Automatic Model Version Checker - Get notified of new LLM models (v1.9.26)
✅ UI Standardization - Consistent green checkbox design throughout
✅ Local LLM support (Ollama) - Run AI translation offline (v1.9.16)
✅ Automatic hardware detection and model recommendations

Near Future (v1.10+):

Enhanced QA tools (consistency checks, tag validation)
Improved Superbench (more models, better scoring)
Advanced filtering options
Performance optimizations for very large projects

Medium Term (v2.0):

Enhanced termbase management (bulk import, merge, deduplication)
Advanced statistics and project analytics
Team collaboration features (shared TMs, cloud sync)

Long Term:

Real-time collaboration (multiple translators, one project)
Quality prediction ML (estimate AI output quality before translating)
Plugin system (community extensions)
Integration with translation marketplaces
Mobile companion app

Experimental Ideas:

MT post-editing mode with quality estimation
Automated terminology extraction from documents
CAT tool plugins (direct integration with memoQ/Trados/etc.)
Voice-to-voice translation (speak source, hear target)

Community-Driven: Feature priorities based on user feedback!

Need More Help?

Still Have Questions?

📖 Read the guides - Check docs/ folder for detailed guides
🔍 Search GitHub Issues - Your question may already be answered
💬 Open a GitHub Issue - Ask anything, get detailed answers
🤝 GitHub Discussions - Community tips and workflows

Found a Bug?
→ Report it on GitHub

Want a Feature?
→ Request it on GitHub

Want to Contribute?
→ Fork the repository and submit a Pull Request!

Last updated: November 22, 2025
Supervertaler v1.7.8
Created by Michael Beijer with AI assistance

Supervertaler - Frequently Asked Questions ​

📑 Table of Contents ​

About Supervertaler ​

What is Supervertaler? ​

Who created Supervertaler? ​

Who is Supervertaler for? ​

How does Supervertaler compare to other translation tools? ​

Getting Started ​

What do I need to run Supervertaler? ​

How much does it cost? ​

How do I install Supervertaler? ​

How do I get API keys? ​

Features & Capabilities ​

What are the key features of v1.9.27? ​

What are the three view modes? ​

What is the Prompt Manager? ​

What is figure/image context support? ​

How does the translation memory work? ​

How do keyboard shortcuts work? ​

What is CAT tag handling? ​

Technical Questions ​

What AI models are supported? ​

How does AI translation work in Supervertaler? ​

What file formats are supported? ​

What programming language is it built with? ​

Can I use Supervertaler offline? ​

How do I set up Local LLM (Ollama)? ​

What are the system requirements? ​

Why is my antivirus flagging Supervertaler as malware? ​

Workflow & Integration ​

How do I integrate Supervertaler with my CAT tool? ​

What's the typical translation workflow? ​

How do I handle large documents? ​

Can I customize the AI prompts? ​

How do I use Universal Lookup? ​

Troubleshooting ​

Why is translation slow? ​

API errors - what do they mean? ​

Filter highlighting not working ​

Termbase matches not showing ​

Voice dictation (Supervoice) not working ​

Universal Lookup not working ​

How do I report a bug? ​

Project Management ​

What is a project file (.svproj)? ​

How do I save and reopen a project? ​

Does Supervertaler support multi-file projects? ​

Development & Community ​

Why was Supervertaler created? ​

What's the development history? ​

Why is it open source? ​

Why the name "Supervertaler"? ​

Privacy & Commercial Use ​

Is my translation data private? ​

Are my website passwords stored by the embedded browser? ​

Can I use Supervertaler commercially? ​

How can I support the project? ​

More Resources ​

Where can I learn more? ​

What's next for Supervertaler? ​

Need More Help? ​

Supervertaler - Frequently Asked Questions

📑 Table of Contents

About Supervertaler

What is Supervertaler?

Who created Supervertaler?

Who is Supervertaler for?

How does Supervertaler compare to other translation tools?

Getting Started

What do I need to run Supervertaler?

How much does it cost?

How do I install Supervertaler?

How do I get API keys?

Features & Capabilities

What are the key features of v1.9.27?

What are the three view modes?

What is the Prompt Manager?

What is figure/image context support?

How does the translation memory work?

How do keyboard shortcuts work?

What is CAT tag handling?

Technical Questions

What AI models are supported?

How does AI translation work in Supervertaler?

What file formats are supported?

What programming language is it built with?

Can I use Supervertaler offline?

How do I set up Local LLM (Ollama)?

What are the system requirements?

Why is my antivirus flagging Supervertaler as malware?

Workflow & Integration

How do I integrate Supervertaler with my CAT tool?

What's the typical translation workflow?

How do I handle large documents?

Can I customize the AI prompts?

How do I use Universal Lookup?

Troubleshooting

Why is translation slow?

API errors - what do they mean?

Filter highlighting not working

Termbase matches not showing

Voice dictation (Supervoice) not working

Universal Lookup not working

How do I report a bug?

Project Management

What is a project file (.svproj)?

How do I save and reopen a project?

Does Supervertaler support multi-file projects?

Development & Community

Why was Supervertaler created?

What's the development history?

Why is it open source?

Why the name "Supervertaler"?

Privacy & Commercial Use

Is my translation data private?

Are my website passwords stored by the embedded browser?

Can I use Supervertaler commercially?

How can I support the project?

More Resources

Where can I learn more?

What's next for Supervertaler?

Need More Help?