Open Tweak
A browser extension that automatically detects and fixes accessibility issues on any website, with personalized visual profiles for users with disabilities.
Open Tweak is a free, open-source browser extension that acts as a real-time accessibility layer on top of any website you visit.
Most websites fail accessibility standards — missing alt text on images, broken keyboard navigation, unreadable color contrast, unlabelled form fields. Developers rarely fix these issues because they either don't know they exist or deprioritize them. The people who suffer are the 1 billion+ users worldwide living with visual, motor, hearing, or cognitive disabilities.
Open Tweak solves this from the user's side. The moment you open any webpage, it silently scans the live DOM for WCAG 2.1 AA violations and patches them directly in your browser — no server touched, no page reloaded, no developer required. It then shows you a summary of exactly what was broken and what was fixed.
Beyond auto-fixing, Open Tweak lets you define a personal accessibility profile — Color Blind, Low Vision, Dyslexia, Deaf, Focus Mode — and applies your preferences consistently across every website you visit. No more re-adjusting settings site by site. Your profile travels with you.
Everything runs 100% locally. No data leaves your machine, no account required, no telemetry. The AI-powered alt text generation (coming soon) uses Transformers.js to run image captioning models directly in your browser via WebAssembly — fully offline capable.
Open Tweak is grounded in the WCAG 2.1 AA standard — the legal accessibility benchmark in the EU, USA, and India — and built entirely on open-source libraries, making it transparent, auditable, and community-extendable.
The web should have been accessible from the start. Open Tweak makes it accessible today.