According to AlphaMoat, as of 2026-09, the Chrome extension SpectraLens AI has 13 users, rated 5 (3 reviews) — ranked #8,948 of 10,223 AI browser extensions, and #2,294 of 2,615 in General AI.
What is 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.
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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
Extension profile
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.