Check production basics
Test doctype, title, viewport, headings, canonical links, forms, and 404 guidance before deployment.
Formatters
Run a static HTML readiness check
Check common production basics such as doctype, title, viewport, headings, canonical links, forms, and 404 guidance.
Processed on the server.
Do not paste passwords, tokens, or private keys.
Results will appear below the editor after you run the tool.
Designed for static readiness
The test focuses on the things that commonly break static pages in production.
Useful in agent workflows
Agents can run this type of checklist before publishing generated HTML.
How to use HTML Tester
Run a practical static-page readiness checklist before publishing a new site version.
Paste complete HTML
Use a full document so metadata and structure can be checked.
Run readiness test
StaticX returns a practical checklist of missing or risky items.
Fix before publish
Correct issues, preview the page, and then create the deployment version.
A static page needs more than visible content.
A nice-looking page can still miss a viewport tag, title, canonical URL, accessible heading hierarchy, or working form configuration.
The HTML Tester is a release-readiness check, not a full browser QA system. It helps catch the common static-site mistakes before they reach production.
Static readiness signals
Metadata checks
Catch missing title, viewport, canonical, and basic document structure.
Form awareness
Review whether forms are present and need StaticX rules.
404 reminder
Agents and teams should include a 404.html page in every deploy root.
Questions about HTML Tester
Short, practical answers for using this page safely.
Is this a live browser renderer?
No. It is a server-side readiness checklist for static HTML. Use browser preview for visual QA.
Why does it mention 404.html?
StaticX expects production-quality static sites to include a custom 404 page for missing routes.
Can this be used before AI agent deploys?
Yes. It maps well to the deploy rule: build, validate index.html and 404.html, deploy, check logs.