New: browser extension

Find broken links right in your browser

Install the free BadlinkCheck extension, open your website and start the check. It crawls every page, tests every link, image and script and shows 404 errors, server errors, timeouts and redirects – in minutes.

  • Starts instantly – no queue, live progress
  • Works on staging, intranet and password-protected sites
  • Page content stays on your computer – only errors are stored
  • Optional free account keeps your reports online
Get the extension – free Create Free Account

Chrome · Edge · Firefox · Safari · Chromium

How it works

Three clicks from installation to a complete broken-link report.

1
Install the extension

Available for Chrome, Chromium, Edge, Firefox and Safari.

2
Open the page you want to check

Click the BadlinkCheck icon in the toolbar and choose “Check this website”. You can also enter any start URL.

3
The extension crawls the website

It follows links within the website (and its sitemap), checks every link, image, script and stylesheet and reports 404, 5xx, timeouts and redirects.

Why Broken Links Matter

Understanding the impact on your website and business

Risks of Broken Links
  • SEO Damage

    Search engines penalize websites with broken links, lowering your rankings and visibility in search results.

  • Poor User Experience

    Visitors encountering 404 errors become frustrated and are more likely to leave your site immediately.

  • Lost Conversions

    Broken links to product pages, forms, or checkout can directly cost you sales and leads.

  • Unprofessional Image

    Broken links signal poor maintenance and can damage your brand's credibility and trustworthiness.

Benefits of Monitoring
  • Improved SEO Rankings

    Clean, working links help search engines crawl your site effectively, boosting your search rankings.

  • Better User Experience

    Visitors find what they're looking for without dead ends, increasing engagement and time on site.

  • Higher Revenue

    Working links to products and services maximize conversion opportunities and sales.

  • Professional Credibility

    A well-maintained website builds trust and demonstrates attention to detail and quality.

Powerful Features

Everything you need to keep your website free of dead links.

Full-site crawl

Follows internal links from the page you choose and adds URLs from robots.txt and sitemap.xml.

Every link type

Checks links, images, CSS, JavaScript, iframes and media – internal and external.

Redirects & errors

Detects 404/410, 5xx server errors, timeouts, Cloudflare blocks and redirect targets.

Local history

The last 100 checks are kept in your browser. Export results to CSV or JSON.

Reports in your account

Connect a free account and every report appears online with the list of checked pages.

Gentle on your server

Set the page limit, parallel requests, delays and URLs to skip.

Frequently Asked Questions

Yes. The extension and the account are free.
No. The extension works on its own. An account lets you keep reports online and access them from any device.
They have been stopped. All link checks now run in the browser extension, which is faster, works on protected sites and is not blocked as a bot.
Google Chrome, Chromium-based browsers (Brave, Opera, Vivaldi), Microsoft Edge, Mozilla Firefox and Apple Safari on macOS.
Keep the check tab open until it finishes. You can use other tabs meanwhile. Partial results are saved continuously.
Pages are downloaded and analysed only in your browser. Their content (HTML) is never stored or sent anywhere. If you connect your account, the same summary is sent to BadlinkCheck.com and shown under Reports. You can disconnect a browser at any time.

Ready to Start?

Install the extension and check your website in a few minutes.

Get the extension – free