Join 1000+ users who've upgraded to Checkbot paid plans including companies like

Are you following web best practices? Checkbot will let you know

Checkbot can crawl 100s of pages in minutes for broken links, duplicate content, invalid HTML, insecure forms and more.
Check your site is following 50+ best practices recommended by Google, Mozilla, W3C and other web experts.

SEO tests

  • Fix all broken page links
  • Use unique page titles
  • Eliminate duplicate pages
  • Use valid HTML, CSS & JS
  • Avoid temporary redirects
  • Use human readable URLs
See all rules tested  βžœ

Security tests

  • Use HTTPS on all pages
  • Avoid mixed content errors
  • Secure password forms
  • Enable HSTS preload
  • Turn on XSS protection
  • Disable type sniffing
See all rules tested  βžœ

Speed tests

  • Eliminate redirects chains
  • Avoid inlining CSS & JS
  • Minify CSS & JavaScript
  • Leverage browser caching
  • Enable server compression
  • Avoid render blocking scripts
See all rules tested  βžœ

New to optimising websites? Checkbot will teach you what fixes to make and why they're important.
Browse Checkbot's Web Best Practices Guide for an overview of the 50+ rules Checkbot automatically tests for.

Stop critical issues going live. Save time.

Checkbot will become an essential part of your workflow for identifying problems early and guiding optimisations.
Check all your sites whenever you want for instant feedback after you make changes to keep your sites healthy.

Save time on manual testing

Stop wasting time on tedious manual checks. Checkbot can effortlessly and reliably check 100s of pages with a click in minutes.

Uncover hard to spot problems

Discover critical issues lurking in pages you didn’t think to check. Checkbot’s crawling ability and comprehensive set of tests will root out problems you’ve missed.

Stop problems going live

Catch critical issues before they impact your users and search rank. Use Checkbot during development to catch problems before they ever reach production.

Get immediate feedback

Stop waiting days for your Google search results or Google Search Console to update to see the impact of your changes. Get feedback in seconds with Checkbot.

Check all the sites you work on

Checkbot lets you crawl all the sites you want as often as you want. Check every site you’re involved with after every change without limitations to keep on top of issues.

Boost your SEO, speed & security

Checkbot will tell you on how to craft a highly optimized website. Improve your search rank, accelerate your pages and harden your security to make the most out of your site.

Browse our Frequently Asked Questions for answers to common questions about Checkbot.

Users give Checkbot 4.9 out of 5 stars

Over 80,000 Chrome users are using Checkbot to test the SEO, speed and security of their websites.
Checkbot has a 4.9 out of 5 stars rating on the Chrome Web Store. See below for a sample of recent reviews.

  • Really fast and efficient, reports and information are well organized. Have used a number of other testers for broken links, etc. None provided so much useful information, so quickly and so easily. It seems like magic

    Lee Dickholtz, 5 out of 5 β˜…β˜…β˜…β˜…β˜…
  • Love this extension! Shows me everything relating to my website (redirects, alt tags missing, sitemap, safety, and more!) and allows me to make sure I’ve done everything possible for a client.

    Victoria Larsh, 5 out of 5 β˜…β˜…β˜…β˜…β˜…
  • Really slick, took me less than an hour to compile a list of things we had overlooked in our rush to launch. As a product manager, I really appreciate it.

    Hardi KΓ΅vamees, 5 out of 5 β˜…β˜…β˜…β˜…β˜…
  • This makes checking to see if [there’s] errors on websites that I’m working on a breeze. … I am so glad that I found this wonderful tool.

    Gilbert Bentley Jr, 5 out of 5 β˜…β˜…β˜…β˜…β˜…
  • I love this tool, as someone who’s relatively new to SEO I need all the help I can get. This tool is absolutely amazing for showing you what you need to improve.

    Victor Contreras, 5 out of 5 β˜…β˜…β˜…β˜…β˜…

See more of the 900+ positive reviews Checkbot has received.

For Windows, Mac, Chrome OS & Linux

Checkbot is a Google Chrome extension that runs on all major desktop platforms.
Install Checkbot in a couple of clicks and start optimizing your website now.

  Test your website for free now ➜


Checkbot gives you everything you need to track down, understand and fix website issues.

Investigate issues

Track down problems with ease. Use convenient shortcuts to list incoming links to a page, view page source code, show response headers and examine redirect chains.

Quick & easy to install

Add Checkbot to Chrome in seconds with a couple of clicks. Use Checkbot anywhere you run Chrome alongside your favourite Chrome web development tools.

Explore your site

Get an overview of your site structure. Show your most linked to pages, list all image/JS/CSS files, review non-indexable pages, explore all redirects and more.

Check private & localhost sites

Test your site in all stages of development with ease. Crawl staging and local development sites, password protected pages and sites on private networks.

Customise crawls

Focus your testing on the parts of your site you're currently interested in. Limit the URLs crawled by subdomain, subfolder, search depth, pattern and type.

Export to CSV & PDF

Create PDF reports and bulk export problems found to CSV so you can share your findings with clients and team members as well as perform your own further analysis.

Get quick feedback on changes

Think you've fixed a page that had an issue? Quickly verify your fix by recrawling only that page for fast feedback without having to crawl the entire site again.

Beginner friendly

Not an expert on web best practices? No problem! When Checkbot finds a problem, the built-in help will teach you what you need to do and why it's important.

Keep up with new features and improvements by checking our releases page.

Join 1000+ users who've upgraded to Checkbot paid plans including companies like

Upgrade to save more time and catch more problems

Join 1000+ who've upgraded already to audit large sites, test local sites and unlock CSV + PDF export.
Crawl as many sites as you want as often as you want on the free and paid plans.


For quickly checking small websites
  • 100 URLs per crawl
  • Unlimited crawls
  • Unlimited sites
  • Ad supported


For in-depth audits & reporting
  • 10,000 URLs per crawl
  • Unlimited crawls
  • Unlimited sites
  • Ad free
  • Crawl localhost URLs
  • PDF summary reports (sample)
  • CSV export & bulk export (sample)
  • HTTP Auth password support
  • Skip URLs by pattern, type & more
  • For a single user on unlimited devices

Full refund if you cancel within 14 days if you're not satisfied and you're a new customer. Cancel any time.

Payment accepted via Paypal, Apple Pay, Google Pay or card (includes American Express, Visa, Mastercard).
Secured via Paddle. Read more about subscriptions in the FAQ and contact us if you have questions.

Checkbot for Chrome has been featured on

Start improving your website today

Want to know how to make your site secure, fast and search engine friendly?
Try Checkbot now to get actionable advice on what you need to do.

  Test your website for free now ➜