SiteLint - Web Audit Tools

Fast, offline audits for Accessibility, Performance, Security & Technical SEO inside DevTools and Side Panel.

Whether you're coding, testing, or designing, SiteLint helps you catch issues early and ship inclusive, high-performing websites and web applications. SiteLint extension is built with a deep commitment to accessibility, ensuring that our interface is usable and inclusive for everyone. 🤖 Built-in AI with Gemini Nano SiteLint now features an integrated Gemini Nano model, running natively in your Chrome browser. * No rate limits: audit and chat as much as you want without hitting API caps. * Total privacy: your code and data never leave your computer. AI processing happens locally. * Works offline: get intelligent explanations and follow-up answers even on a plane. * Smart remediation: ask follow-up questions about specific rule violations to get tailored fix suggestions. Note: To use these features, Gemini Nano must be enabled in your browser. 👉 Follow Google's guide to enable the Prompt API: https://developer.chrome.com/docs/ai/get-started#use_apis_on_localhost Key Features: ✅ Multi-audit engine Run comprehensive audits for Accessibility, Performance, Security, and SEO - all from a single tool. ✅ Web accessibility compliance Verify compliance with WCAG, ADA, EAA, and other regulations. Improve usability for everyone and reduce legal risks with automated checks. ✅ Full Shadow DOM support Audit Web Components and custom elements with complete Shadow DOM traversal. SiteLint reaches into every shadow root to catch issues in modern component-based architectures. ✅ PDF Accessibility Validation - private & local Validate PDF documents for accessibility compliance directly inside the SiteLint Chrome extension. Your PDF never leaves your computer - no upload to any server, no cloud processing, no third-party APIs. All analysis happens locally in your browser. What you can do: - Upload local PDF files - Validate a PDF by URL - Automatically detect PDFs on any webpage you visit What gets checked PDF/UA: - Tagged PDF status and structure tree (StructTreeRoot) - Font embedding (detects missing/synthetic fonts) - Marked content on all pages - Document language and metadata (title, author, subject) - Image alternative text - Heading hierarchy (H1-H6) - Table headers (TH elements) - Form field labels WCAG requirements: - Color-only information detection - Keyboard accessibility (interactive elements) - Document outlines/bookmarks - Link purposes - Language specifications Best Practices: - List structure (L, LI, Lbl, LBody) - Bookmarks for long documents (>20 pages) - Microsoft Word export detection Report includes: - Accessibility score (0-100) - Page-by-page analysis with detected structure types - Font analysis (embedded, synthetic, non-embedded) - CSV export for integration ✅ Privacy-first & fully offline SiteLint runs entirely on your device. Each audit engine update is cryptographically signed and verified with SHA-384 integrity checks for maximum trust. ✅ DevTools & Side Panel integration Use SiteLint directly in Chrome DevTools for deep code-level insights, or in the Side Panel for quick, on-the-fly checks as you browse. ✅ Actionable insights Get instant issue breakdowns with clear remediation steps. Pinpoint problems at the code level and fix them fast with AI-powered context. ✅ Zero telemetry without consent Your data stays yours. SiteLint never sends telemetry unless you explicitly opt-in. ✅ Standards‑based EARL reporting Generate audit results in EARL format aligned with WCAG Success Criteria, enriched with SiteLint best‑practice metadata. 🔄 Coming Soon: SiteLint Pro * Team workspaces: record, track, and manage issues in the SiteLint platform. * One-click sync: send reports to a shared workspace for team collaboration. Install once. Audit everywhere. Start building faster, safer, and more inclusive websites today with SiteLint.