LinkCheck

Scan any webpage for broken and redirected links. One click. Zero configuration.

Free & open source Chrome / Edge / Brave No data collected

How it works

  1. Click the LinkCheck icon

    Open any webpage and click the LinkCheck icon in your browser toolbar. A popup panel appears showing the current page.

  2. Press Check Links

    LinkCheck finds every link on the page and checks each one in the background. Results stream in as they're discovered — no waiting for the full scan to finish.

  3. Review results

    Broken links show a red badge, redirects show orange, and working links show green. Use the tabs to filter by status. Hover over highlighted links on the page to see tooltips with details.

  4. Export

    Click Export to download a Markdown report of all results. Share it in a pull request, issue, or email.

Broken (404, 500, etc.) Redirect (301, 302) OK (200)

Features

Real-time results

Broken links appear the instant they're found. No need to wait for the entire scan to complete.

Page highlights

Broken links get a red dashed outline, redirects get orange. Hover to see status codes and redirect targets right on the page.

Smart checking

Uses HEAD requests to minimize bandwidth, falls back to GET when needed. Handles timeouts, redirects, and server errors gracefully.

Markdown export

Download a clean report listing all broken links and redirects. Ready to paste into GitHub issues, PRs, or documentation.

Flexible options

Skip image links, ignore 403 errors, toggle redirect visibility, or turn highlights on and off. Your preferences are saved automatically.

Privacy-first

No analytics, no tracking, no data collection. The only network requests are to the links already on your page. Read the full policy.

Options

Toggle these in the popup header. Your choices are saved between sessions.

OptionWhat it does
Skip imagesExcludes links that point to image files (.png, .jpg, .gif, .svg, .webp, etc.) from the scan.
Skip 403Treats HTTP 403 (Forbidden) as non-broken. Useful for sites that block automated requests.
Show redirectsControls whether redirected links appear in the "All" tab. The Redirects tab is always available.
HighlightOverlays colored outlines on broken and redirected links directly on the page, with hover tooltips.

Install

Chrome Web Store

Coming soon

Works on Chrome, Edge, Brave, and other Chromium browsers.

Manual install (developer)

  1. Download or clone the GitHub repo
  2. Open Chrome and go to chrome://extensions
  3. Enable Developer Mode (top-right toggle)
  4. Click Load unpacked and select the project folder
  5. The LinkCheck icon appears in your toolbar

Frequently asked questions

What browsers does LinkCheck support?

LinkCheck works on Chrome, Microsoft Edge, Brave, and any Chromium-based browser (version 88 or later). Firefox and Safari are not currently supported.

Why does it need the "Access all URLs" permission?

LinkCheck sends requests to every link found on the page you're scanning. Without broad host permission, it could only check links on a handful of pre-approved domains — which would make it useless for most pages. The permission is used solely for link checking, never for reading or modifying page content on other sites.

Does LinkCheck send my data anywhere?

No. The only outbound requests are HTTP checks to the URLs already visible on the page. No analytics, telemetry, or tracking of any kind. See the privacy policy for details.

Why do some links show as broken when they work in my browser?

Some servers block automated requests (returning 403 Forbidden) or behave differently for HEAD requests. Try enabling the "Skip 403" option. Links behind login walls or CAPTCHAs will also appear broken since LinkCheck can't authenticate.

What counts as a "redirect"?

A link is flagged as a redirect when the final URL after following all redirects is different from the original link (ignoring trailing slashes). For example, if http://example.com redirects to https://www.example.com, that's a redirect. Updating these links improves page load speed and SEO.

Can I scan pages behind a login?

Yes — if you're already logged in and can see the page, LinkCheck can scan it. It runs directly in your browser using your existing session. However, links that themselves require authentication will likely show as broken.

How do I give feedback or report a problem?

Just send an email to support@gameshoutout.com — we'd love to hear from you. You can also leave a review on the Chrome Web Store.

Is LinkCheck open source?

Yes. LinkCheck is released under the Apache 2.0 License. Contributions are welcome on GitHub.