Lighthouse Audit Checklist
Free online lighthouse audit checklist — prepping a site to score well before you run Lighthouse.
A pre-release runbook mirroring Lighthouse's Performance, Accessibility, Best Practices, and SEO audits.
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Why follow ToolJiffy Lighthouse Audit Checklist?
Google Lighthouse is the industry-standard web auditing tool integrated directly into Chrome DevTools. Achieving 100/100 scores across Performance, Accessibility, Best Practices, and SEO categories guarantees fast loading times, superior user experience, and optimal search engine indexability. ToolJiffy Lighthouse Audit Checklist provides an interactive developer roadmap in your browser.
- 100/100 Performance Audit Roadmap: Action steps for render-blocking resource elimination, image compression, and script deferral.
- 100/100 Accessibility Compliance Steps: Comprehensive WCAG AA checks for alt text, contrast, form labels, and ARIA roles.
- 100/100 Best Practices & SEO Guides: Security header verification, HTTPS enforcement, meta tag checks, and console error fixes.
- 100% On-Device Local Storage State: Progress checkboxes save automatically in browser
localStoragewithout server logins.
Actionable Google Lighthouse Audit Optimization Engine
ToolJiffy's checklist categorizes optimizations by Lighthouse category and priority level. Marking off completed tasks tracks your progress toward flawless 100/100 Lighthouse audit reports.
Whether preparing client websites for launch, auditing web application performance, or optimizing static site templates, a structured Lighthouse checklist ensures zero missed audits.
Client-side security for internal site audits
Tracking Lighthouse audit progress for unreleased client projects or internal web apps should never require logging data on remote servers.
ToolJiffy operates on a zero-cloud architecture. All checklist states remain 100% local in your browser tab. Your audit data never leaves your device.
Step-by-step guide to scoring 100/100 on Lighthouse
- Complete Performance tasks: Defer non-critical JS, compress images to WebP, and eliminate render-blocking CSS.
- Complete Accessibility tasks: Add alt text to all images, label all form inputs, and verify WCAG AA color contrast.
- Complete SEO & Best Practices tasks: Ensure canonical tags, title/description meta tags, HTTPS SSL, and
rel="noopener"external links are present.
Frequently asked questions
How does the Lighthouse Audit Checklist work in browser memory?
ToolJiffy provides an interactive, stateful optimization checklist designed to help developers achieve 100/100 scores across all 4 Google Lighthouse audit categories: Performance, Accessibility, Best Practices, and SEO.
What 4 categories are evaluated in Google Lighthouse audits?
Google Lighthouse evaluates Performance (speed & Web Vitals), Accessibility (WCAG compliance), Best Practices (HTTPS, modern APIs, security), and SEO (meta tags, indexability).
How do I achieve 100/100 in Lighthouse Performance?
Minify CSS/JS, compress images to WebP/AVIF, use HTTP/2 or HTTP/3, enable Gzip/Brotli compression, defer non-critical JavaScript, and eliminate render-blocking resources.
How do I achieve 100/100 in Lighthouse Accessibility?
Ensure all images have alt attributes, form inputs have labels, contrast ratios pass WCAG AA standards, heading levels are sequential, and button elements have accessible names.
Is my checklist progress saved automatically?
Yes! Checklist checkbox states save automatically in your browser`s localStorage. Your progress persists across browser reloads without requiring an account.
What are the main causes of low Lighthouse Best Practices scores?
Unsafe cross-origin links without `rel="noopener"`, missing HTTPS SSL certificates, deprecated API usage, and console errors.
Should Lighthouse audits be run in Chrome Incognito mode?
Yes! Browser extensions can inject scripts and styles that artificially lower your Lighthouse performance and accessibility scores. Always run audits in Incognito mode.
Is ToolJiffy Lighthouse Audit Checklist free without limits?
Yes! ToolJiffy is 100% free with unlimited usages, zero account sign-ups, and zero watermarks.
Explore related developer tools
Follow the Core Web Vitals Checklist, follow the Page Speed Optimization Checklist, follow the PWA Checklist, or audit SEO with SEO Analyzer.