Unknown

Tracking since May 27, 2026.

Changelog

• Jun 3, 2026
  description

  HTML Validity Checker helps developers, SEOs, and site owners spot common rendered-DOM structure issues without sending page content to a remote validator.
  
  Click the extension, run a check, and review findings with selectors and snippets where feasible. Export a report as JSON or Markdown, or copy a readable summary for a ticket or client note.
  
  This is a local quick check, not W3C validation. It checks the DOM Chrome rendered after scripts and browser parsing, so it is useful for practical QA but not a replacement for formal source validation.
  
  Key features:
  
  - Explicit user-triggered active-tab check
  - Duplicate id detection
  - Empty href and src checks
  - Missing html lang and title checks
  - Missing image alt checks
  - Heading jump warnings
  - Form control label checks
  - Common invalid nesting heuristics
  - Selectors and snippets for findings
  - Copy report, export JSON, and export Markdown
  
  Privacy:
  
  Runs locally. No remote validation calls. No host permissions. No analytics.

  (empty)

• Jun 3, 2026
  short_description

  Run a fast local HTML structure check on the active page with DOM selectors and snippets.

  (empty)

• Jun 3, 2026
  name

  HTML Validity Checker

  Unknown

• Jun 3, 2026
  category

  productivity/developer

  (empty)

• Jun 3, 2026
  permissions

  activeTab, scripting, storage

  (empty)

Permissions & access

Permissions

None declared

Host access

None declared