Browser selection + desktop OCR + PDF translation · Mac & Windows
All-in-One AI Translation & Deep Reading · 100% Free
Instant selection translation in your browser, plus powerful desktop tools: screenshot OCR, layout-preserving PDF translation, private offline models, and smart vocabulary sync. No subscriptions, all features unlocked.
A 37-second walkthrough of selection translation, screenshot OCR, and document workflows
Desktop App (Mac & Win)
Screenshot OCR, layout-preserving PDF translation, offline models, and vocabulary sync
Browser Extension
In-place webpage selection translation with Google & Bing built in. No API key needed
Layout PDF Translation
Preserve columns, formulas, and tables. Export translated or bilingual PDFs on demand
Private & Offline
Mix free built-in engines, custom API keys, and local 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 device. No data ever leaves your computer.
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 (Mac) or custom hotkey 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.
Download Neural Lens Free
Available for macOS (Apple Silicon / Intel), Windows 64-bit, and Chrome / Edge extension. 100% free with all features unlocked.