# LaunchCheck: 32 automated source checks

All checks run on one server-delivered HTML response and its headers. The checklist score is the percentage passed; it is not a security rating, search ranking or compliance certification. Optional-element checks pass when there is no relevant element, with counts in the evidence.

## Search — 7

Page title length; description length; primary heading count; absolute canonical URL; no explicit noindex; Open Graph metadata presence; syntax of existing JSON-LD blocks.

## Accessibility signals — 11

Document language; mobile viewport; image alt attributes; form labels; heading level skips; detectable link names; detectable button names; unique IDs; ARIA text-reference targets; zoom restrictions; automatic meta refresh.

## Security signals — 8

HTTPS page delivery; CSP header presence; HSTS duration; MIME sniffing header; referrer policy presence; HTTP URLs in selected asset attributes; HTTP form actions; explicit frame embedding policy.

## Delivery — 6

Decoded HTML size; HTML5 doctype; UTF-8 declaration; image width/height attributes; lazy/high-priority image conflicts; classic external head scripts without async/defer.

## Limits

No JavaScript rendering, site crawl, external image/script downloads, vulnerability exploitation, measured Core Web Vitals or full accessible-name computation. CSS and srcset URLs are not inspected for mixed content. Image sizing through CSS may already be correct. JSON-LD is parsed but not checked against a schema. Header presence is not proof that a policy is restrictive. Evidence and recommendations explain these limits per check.

## Payment and existing reports

New reports contain 32 checks; prices are unchanged. Saved earlier reports retain their original 16 checks and remain recoverable. The comparison tool accepts complete reports of either version but refuses cross-version comparisons. Establish a reviewed new baseline when upgrading.

Automated API: /developers. LaunchCheck does not sell implementation or manual repair work.

Implementation references: [MDN viewport](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/meta/name/viewport), [MDN frame-ancestors](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/frame-ancestors), [MDN script](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/script).