“accessibility”

Form that drafts an accessibility statement for a website; the page says entries are not stored outside the browser.

WCAG 2.0 AA and AAA contrast checker that suggests the nearest accessible color.

Scans a web page and marks accessibility errors and structure.

Builds a matrix of which colour pairs in a palette meet accessibility contrast.

Free WCAG contrast ratio checker.

Free scan that audits a site for WCAG and ADA issues.

Generates color scales whose steps meet target contrast ratios for design systems.

Writes alt text for an image to help accessibility and image SEO.

Teacher-facing set of tools for adapting lessons to different learners, with accessibility and AAC support, designed for Gemini Canvas.

Builds accessible color scales from curves for hue, saturation and luminosity.

Contrast checker and analyser that suggests accessible colour alternatives.

Shows contrast scores for every combination in a set of colors.

Tests whether search and AI bots are allowed by a site's robots.txt.

Checks two colours against the WCAG AA and AAA contrast ratios.

Checks how a site looks when shared on seven platforms and whether AI crawlers can read it.

Checks that your camera and microphone work and shows device details.

Analyzes a URL with Lighthouse and real-user data and lists Core Web Vitals and fixes.

Checks colour combinations against WCAG success criteria with a live preview.

Markdown editor with live preview, LaTeX math support and GitHub-style rendering in the browser.

Interactive page for testing how screen readers announce live region updates.

Tests palettes for colour blindness and builds safe palettes.

Markdown editor web app that edits local files through the File System Access API, with optional in-browser AI.

Picks colors and previews them under simulations of color vision deficiency.

Plots temperature and precipitation history for regions, states and the globe.