Sitelint Web Audit Tools

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.