Rocket Blog

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• Introducing the Rocket Validator HTML Guides Chrome Extension

  2026-05-21 by Jaime Iniesta

  A free Chrome extension that adds help links next to every issue reported by the W3C Validator and validator.nu, with shortcuts to Rocket Validator's HTML guides, search engines and AI assistants.

• Introducing the Color Contrast Checker

  2026-04-30 by Jaime Iniesta

  A free, shareable color contrast checker that evaluates pairs against WCAG and suggests accessible alternatives when a pair falls short.

• 750+ Guides Rewritten: Fix Accessibility and HTML Issues with Confidence

  2026-02-27 by Almudena García

  We've just finished a complete overhaul of our HTML and accessibility validation guides — over 750 of them. Every single guide has been reviewed, corrected, and expanded to give you clearer explanations, better code examples, and practical steps to fix each issue.

• Accessibility Checker upgraded to Axe Core 4.11.1

  2026-02-04 by Jaime Iniesta

  The accessibility validation server on Rocket Validator has been upgraded to Axe Core 4.11.1. This update fixes several false positives, which may result in a slightly lower number of reported issues, and resolves an edge-case bug where the color contrast rule could skip a page.

• Test for RGAA and WCAG Compliance with Rocket Validator and Axe 4.11

  2025-10-27 by Almudena García

  Rocket Validator now supports the French RGAA accessibility framework with the latest Axe 4.11 update, making it easy to test your sites for both RGAA and WCAG compliance.

• Accessibility Checker upgraded to Axe Core 4.11.0

  2025-10-26 by Jaime Iniesta

  The accessibility validation server on Rocket Validator has been upgraded to Axe Core 4.11.0, which adds the French RGAA standard to many rules, and fixes some bugs found in previous versions.