Checkbot will tell you if you're following web best practices

Checkbot can test 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 best practices

  • 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 best practices

Speed best practices

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

Security best practices

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

New to optimising websites? Checkbot will let you know 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.

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.

Add to Chrome now
On mobile? Tap to add to Chrome on your
desktop or send an email reminder for later

Stop critical issues going live. Save time.

Checkbot will become an essential part of your workflow for identifying problems early and guiding optimisations.
Use Checkbot to crawl your site for problems and confirm fixes whenever you make changes.

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.

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'll miss.

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 search results or Google Search Console to update to see the impact of your changes. Test your site with Checkbot for instant feedback.

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.

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

What people are saying about Checkbot

Over 15,000 Chrome users are using Checkbot to get the most out of their websites.
Checkbot has a 4.9 out of 5 stars rating on the Chrome Web Store. Here's a sample of recent reviews:

  • Really exceptional. Showed me so many things about the website I’ve been working on. 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 stars 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 stars 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 stars 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 stars 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 stars β˜…β˜…β˜…β˜…β˜…

See more reviews on Checkbot's Chrome Web Store page.

Features

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

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.

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.

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

Export lists of URLs with problems to CSV format so you can share the data with team members, create custom reports and 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.

Pricing

Get started with the free plan for smaller websites. Upgrade to crawl larger websites and for advanced features.
Crawl as many sites as you want as often as you want on both plans.

Basic

Free
For small websites
  • 250 URLs per crawl
  • Unlimited crawls
  • Unlimited sites
  • Contains ads
  • Add to Chrome now
  • Pro

    $100 $50 paid yearly
    50% off! Ends X
    • 10,000 URLs per crawl
    • Unlimited crawls
    • Unlimited sites
    • Ad free
    • Crawl localhost URLs
    • CSV export & bulk export
    • HTTP Auth password support
    • Skip URLs by pattern & type
    • Constrain pages crawled
    • Customise crawler User-Agent
    • Buy now

    One paid plan can be used by a single user on unlimited devices.
    You can cancel at any time. Refunds are allowed within 7 days of purchase.

    See the FAQ for more details or contact us if you have questions. We also have an affiliates program.

    Start improving your website today

    Want your site to rank higher, go faster and be more secure?
    Try Checkbot today and find out how!

    Add to Chrome now
    On mobile? Tap to add to Chrome on your
    desktop or send an email reminder for later