Checkbot is a Chrome/Edge extension for SEO audits, broken link checking, and site crawling. See features, pricing, pros, cons, and FAQs for developers and…
Checkbot runs directly inside the Chrome or Edge browser as an extension, which means there is no separate application to install or server-side crawler to configure. Once activated on a site, it crawls hundreds of pages in parallel, checking each against more than 50 rules covering SEO, HTML/CSS/JavaScript validity, mobile-friendliness, and basic security posture. On the SEO side specifically, it flags broken internal and external links, missing or duplicate page titles and meta descriptions, heading structure issues, canonical URL problems, unoptimized image ALT attributes, robots.txt misconfigurations, redirect chains, and 404 or other error responses, giving users a prioritized list of issues to fix directly in the browser rather than requiring them to export data to a separate report first.
Checkbot follows a freemium model built around a genuinely usable free tier: the free version supports unlimited checks on small websites, with no artificial time limits on how often a site can be re-crawled. This makes it accessible to solo developers, bloggers, or small-business owners who just want an occasional health check on their own site. The paid Checkbot Pro tier is aimed at professionals and agencies who need to check larger or more complex sites, work with localhost or staging environments protected by HTTP authentication, export raw crawl data to CSV for deeper analysis, generate polished PDF reports to share with clients, and customize crawl behavior (such as depth, page limits, or included/excluded URL patterns). Because it was built and is maintained by a single independent developer, Sean Wilson, rather than a large SEO software company, Checkbot has positioned itself as a lightweight, no-frills, highly focused alternative to larger enterprise SEO platforms, appealing especially to developers who want quick, in-browser answers rather than a full marketing-suite subscription.
Checkbot is a Chrome and Edge browser extension used to audit websites for SEO issues, broken links, HTML/CSS/JavaScript errors, mobile-friendliness problems, and basic security concerns by crawling hundreds of pages at once.
Checkbot has a free tier that allows unlimited checks on small websites at any frequency. A paid Checkbot Pro tier adds features like localhost crawling, PDF reports, CSV export, and custom crawl settings.
Checkbot was created by Sean Wilson, an independent web app developer based in Edinburgh, UK, who built it from a personal toolkit of website-testing utilities.
Checking localhost sites and sites protected by HTTP authentication is a paid Checkbot Pro feature, not included in the free tier.
Checkbot crawls websites and checks for more than 50 common problems based on best practices recommended by Google and Mozilla, covering SEO, code validity, mobile-friendliness, and security.
Checkbot is distributed as an extension for Google Chrome and Microsoft Edge, both of which are Chromium-based browsers.
Checkbot is a lighter-weight, browser-based alternative to desktop crawlers like Screaming Frog, well suited to quick, ad hoc audits rather than very large-scale enterprise crawls.
Yes, but only on the paid Pro tier, which includes the ability to generate PDF audit reports and export crawl results to CSV.