Browser selection + desktop OCR + PDF translation
Serious Reading, Translated. Now 100% Free!
Use the lightweight browser extension for selected webpage text, then move heavy work to the desktop app: screenshot OCR, layout-preserving PDF translation, offline models, history, and vocabulary.
A 37 second walkthrough of selection translation, screenshot OCR, and document workflows
Desktop app
Screenshot OCR, PDF translation, offline models, history, and vocabulary sync
Lightweight extension
Google / Bing selection translation with no API key required
Layout PDF translation
Download the local engine on demand and export translated or bilingual PDFs
Local or cloud
Mix free engines, custom API keys, and offline models
One workflow, every surface
From web pages to papers without switching tools
Neural Lens is not just another engine picker. It connects the right surface to the right workflow: extension for web pages, OCR for screens, desktop PDF translation for documents, and offline mode for sensitive work.
Browser selection extension
Translate selected webpage text in-place with Google and Bing built in. No API key required.
Layout PDF translation
Download the local PDF engine on demand and preserve columns, equations, tables, and figures.
Screenshot OCR translation
Capture any non-copyable screen text and translate it with a system-wide shortcut.
Engines and custom keys
Use free built-in engines or connect OpenAI, DeepSeek, Gemini, Groq, OpenRouter, and more.
Offline and privacy mode
Keep sensitive research, contracts, and internal documents local with offline models.
History and vocabulary
Turn repeated reading into reusable translation history, vocabulary, and syncable knowledge.
Translate Anywhere, Privately.
Neural Lens brings powerful NMT models directly to your Mac. No data ever leaves your device.
100% Private
Your text is processed locally on your CPU. Perfect for confidential documents.
Instant Response
Zero network latency. Sub-second translation for your daily workflow.
Under 1GB
Optimized models that won't hog your disk space.
Capture. Recognize. Translate.
The fastest way to handle non-copyable text on your screen.
High Accuracy
Powered by advanced vision models to detect multi-language text.
System-wide Shortcut
Press Option+Shift+O from any app to start capturing.
Auto-Language Detection
Automatically identifies the source language in the image.
How to Use
Master Neural Lens in seconds with simple shortcuts.
Selection Translation
Select any text or paragraph with your mouse and press
to translate instantly in a floating window.
Screenshot OCR Translation
Capture any area on your screen by pressing
to recognize and translate text from images or protected areas.
FAQ
Common questions about Neural Lens
Is it free?
Yes! Neural Lens is now 100% free. All premium Pro features, including layout-preserving PDF translation, unlimited screenshot OCR, and local offline translation, are fully unlocked for everyone.
Does it support Windows?
Yes! Neural Lens is a cross-platform application that fully supports both macOS and Windows.
Can I use my own API keys?
Yes! You can input your own API keys for OpenAI/DeepSeek/Groq/OpenRouter/etc directly in settings.
Do I need my own API keys to use the app?
No! Neural Lens provides built-in free translation engines out of the box. You only need to configure custom API keys if you prefer to use specific premium LLMs like GPT-4o or Claude 3.5.