Link Highlighter

Tracking since Apr 1, 2026.

Changelog

• Apr 21, 2026
  description

  Free Web Link Highlighter.
  
  Highlights links on a webpage - internal, external, and subdomain links are shown with
  "I" Internal links in green
  "E" External links in blue
  "S" Subdomain links in purple
  
  With optional broken link detection, which takes a little longer but displays broken links in red, redirects in orange, and unverified links in grey, still accompanied by the "I", "E", or "S" letter indicator as above.
  
  Either the basic data or the complete broken link check data can be optionally exported to a CSV file for further analysis, which includes all HTTP codes and redirection data.
  
  If broken links are checked, the icons displayed on the screen for links can be hovered over to show a tooltip containing information such as the HTTP code, whether the URL is redirected, and if so, where the redirect points.
  
  Used for SEO page link checking and can help when sometimes links are not visible due to page styling.  This can also be quicker than running large commercial SEO tools, such as SEMrush, SERanking, Ahrefs, or Screaming Frog. Simply use this to check the links on a single page for free!
  
  
  
  Version History
  
  20250325 V1.0 - Initial release
  20250403 V1.1 - Added combined server API & js checking to speed up link checking & optional CSV download of links identified

  Free Web Link Highlighter.
  
  Highlights links on a webpage - internal, external, and subdomain links are shown with
  "I" Internal links in green
  "E" External links in blue
  "S" Subdomain links in purple
  
  With optional broken link detection, which takes a little longer but displays broken links in red, redirects in orange, and unverified links in grey, still accompanied by the "I", "E", or "S" letter indicator as above.
  
  Either the basic data or the complete broken link check data can be optionally exported to a CSV file for further analysis, which includes all HTTP codes and redirection data.
  
  If broken links are checked, the icons displayed on the screen for links can be hovered over to show a tooltip containing information such as the HTTP code, whether the URL is redirected, and if so, where the redirect points.
  
  Used for SEO page link checking and can help when sometimes links are not visible due to page styling.  This can also be quicker than running large commercial SEO tools, such as SEMrush, SERanking, Ahrefs, or Screaming Frog. Simply use this to check the links on a single page for free!
  
  
  
  Version History
  
  20250325 V1.0 - Initial release
  20250403 V1.1 - Added combined server API & js checking to speed up link checking & optional CSV download of links identified
  20260407 V1.2 - Added workers to make detailed link checking faster and more robust
  20260408 V2.0 - Made HTTP identification more structured and accurate

Permissions & access

Permissions

activeTabscripting

Host access

<all_urls>

Screenshots

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