Lighthouse alternative
Deploylint vs Lighthouse
Lighthouse is still useful. Deploylint is not trying to replace it. Deploylint covers the launch-readiness issues that Lighthouse does not prioritize for a small builder about to share a URL.
Quick checklist
- + Run Lighthouse for performance regressions.
- + Run Deploylint for launch blockers and public trust gaps.
- + Fix P0 Deploylint issues before optimizing P2 polish.
- + Keep both reports when preparing a serious launch.
Use Lighthouse for lab performance
Lighthouse is strongest when you need Core Web Vitals estimates, accessibility audits, best practices, and performance diagnostics from a controlled browser run.
- Largest Contentful Paint, Total Blocking Time, and Cumulative Layout Shift
- Image, JavaScript, and render-blocking diagnostics
- Accessibility and best-practice checks
Use Deploylint before public launch
Deploylint looks for risks that make a launch invisible, unsafe, or embarrassing even when the page is fast.
- Noindex, robots, sitemap, canonical, and social preview problems
- Exposed secrets, .env files, .git metadata, source maps, and weak launch security
- Missing legal pages, security.txt, llms.txt, and agent-ready fix prompts
Questions
Is Deploylint a Lighthouse replacement?
No. Deploylint complements Lighthouse by focusing on launch blockers, crawler visibility, trust, and agent-ready fixes.
Which tool should run in CI?
Run both when possible. Use Lighthouse for performance budgets and Deploylint for GO/NO-GO launch readiness.
Run the check
Paste your live URL into Deploylint, fix the P0 issues first, then re-scan before you share the product publicly.