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Cross Browser Testing

Testing & Quality
cross-browser-testing

Cross Browser Testing is an Agent Skill for testing & quality published in the thedaviddias/Front-End-Checklist repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Use when reviewing CI coverage, automated checks, or test strategy related to Test across all major browsers. Focus on whether the rule is continuously verified, not just documented.

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QUICK START

How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy and paste the prompt below.
  3. Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/thedaviddias/Front-End-Checklist/blob/HEAD/skills/cross-browser-testing/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cross-browser-testing, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

Test across all major browsers

Users access your site from different browsers, each with unique rendering engines. Without cross-browser testing, a significant portion of users may experience broken layouts, missing features, or complete failures.

Quick Reference

  • Test on Chrome, Firefox, Safari, and Edge at minimum
  • Use automated tools like Playwright or BrowserStack for CI testing
  • Check CSS features with caniuse.com before using
  • Test on both desktop and mobile versions of browsers
  • Document and gracefully handle unsupported features

Check

Verify that this website works correctly across major browsers (Chrome, Firefox, Safari, Edge).

Fix

Fix browser-specific issues and ensure consistent experience across different browsers.

Explain

Explain the importance of testing across browsers to ensure all users have a good experience.

Code Review

Review tests, CI workflows, and enforcement points related to Test across all major browsers. Flag exact gaps where the rule is not automatically verified or where failures do not block regressions.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/testing/cross-browser-testing