SpectraLens AI

Compare multiple AI models side-by-side on any webpage with visual element cropping, offline OCR text scanning & tab tools.

SpectraLens AI is an all-in-one in-browser productivity companion that allows you to query multiple AI models simultaneously, scan and extract on-screen elements with offline OCR, and unblock restricted text selection without leaving your active tab. 🚀 KEY CAPABILITIES & FEATURES: 1. Simultaneous Multi-Model AI Querying • Send prompts simultaneously to multiple leading AI providers in parallel. • Compare responses side-by-side in a sleek, glassmorphic floating window. • Zero API Costs: Operates directly with your active web sessions without needing paid API tokens or subscription keys. • Stream responses smoothly with independent model cancellation and stop-fetch controls. 2. Visual Element Scanner & On-Device OCR • Point-and-click to scan any webpage element (paragraphs, tables, charts, or code blocks) directly into your prompt. • Built-in offline WebAssembly OCR engine extracts text from images and diagrams entirely in local browser memory. • Automatic structured DOM parsing formats HTML tables into clean Markdown tables and code snippets into fenced code blocks. 3. Adaptive Theme Engine & Ergonomic UI • 3-State Theme Harmonization: 'Page Theme' dynamically detects host website background colors and luminance to blend seamlessly, alongside dedicated Dark Mode and Light Mode. • Draggable, resizable, and auto-minimizing floating launcher with persistent position memory. • Full Keyboard Shortcut support: - Option + A (Alt + A) to toggle the floating assistant. - Ctrl + Shift + S (Cmd + Shift + S) for Visual Element Selector. 4. Tab Productivity & Research Tools • Universal Copy & Context Menu Unblocker: Strips anti-selection, anti-copy, and context-menu locks on documentation and study sites. • Always Active Tab Worker: Prevents background tabs from sleeping, pausing JavaScript timers, or freezing during long tasks. • Automatic Inactivity Cleanup: Automatically closes background AI worker tabs and starts a fresh new chat after 6 minutes of inactivity to keep your RAM light. • Full On-Page Help & Guide Center: In-widget interactive manual, shortcuts cheat sheet, model connectivity hub, and searchable FAQ. 🔒 PRIVACY, SECURITY & PERMISSIONS: • 100% On-Device Local Sandboxing: All conversation histories, domain whitelists, and preferences are stored exclusively on your machine in Chrome's sandboxed LevelDB storage. • Zero User Telemetry: Zero tracking pixels, zero analytics scripts (no Google Analytics, Sentry, or Mixpanel), and zero advertising trackers. • Direct Browser Transport: Prompts travel directly between your browser and official AI domains without passing through third-party proxy servers. • Complete Data Sovereignty: Export full chat histories to structured JSON or readable Markdown files, or wipe data with a single click. 💡 HOW TO USE: 1. Click the floating widget pill on any webpage (or press Alt + A / Option + A). 2. Type your prompt, or use @screen, @page, or @area for visual context. 3. Compare answers across all your enabled AI models instantly! Support & Issues: https://github.com/elsesourav/spectralens-ai/issues