Checkbot (for Chrome)

Checkbot is a Google Chrome extension that will boost the SEO, speed and security of your website. Use Checkbot to crawl 1,000s of pages in minutes to verify you’re following over 50 best practices that have been gathered from Google, Mozilla, W3C and other web experts.

Checkbot will uncover broken links, duplicate content issues, invalid HTML/CSS/JavaScript, insecure password forms, performance killing redirect chains and much more. The comprehensive Checkbot Web Developer Guide describes the 50+ best practices Checkbot automatically tests for, why each rule is important and what changes you need to make if a problem is found. After you think you’ve fixed an issue found by Checkbot, simply recrawl your site again to confirm your changes solved the problem.

Checkbot will become an essential part of your web development toolkit you can use at all stages of development to fix problems and make crucial optimisations before issues make it to your live site. You can perform crawls with Checkbot on an unlimited number of sites as often as you want including local development sites and password protected staging sites.

Checkbot is currently available for free during its public beta period and works on macOS, Linux, Chrome OS and Windows. On release, there will be free and paid plans.