Checkbot SEO checker
Checkbot tests websites for SEO, speed, security, broken links, duplicate content, and invalid HTML, CSS, or JavaScript.
About Checkbot SEO checker
Checkbot is a Chrome extension that tests websites for SEO, speed, and security problems. It can crawl hundreds of pages at once, including private and localhost sites, checking for broken links, duplicate content, invalid HTML, CSS and JavaScript, insecure pages, and speed factors such as caching and compression. It checks against more than 50 best practices and explains what to fix and why.
It runs in Chrome on Windows, Mac, Chrome OS, and Linux desktop platforms.
Key features
- Crawls hundreds of pages at once for broken links
- Checks for duplicate content and unique page titles
- Validates HTML, CSS, and JavaScript
- Tests HTTPS use, mixed content, and password form security
- Checks speed factors including caching, compression, and redirects
- Tests private and localhost sites before launch
Best for: People who maintain websites and need to check many pages for SEO, speed, and security issues.
Good for
- Checks more than 50 rules covering SEO, speed, and security
- Can crawl hundreds of pages in minutes
- Explains what to fix and why it matters
Watch out for
- Requires Chrome on a desktop platform
Checkbot SEO checker at a glance
- Website
- checkbot.io
- Category
- Marketing & SEO › SEO & Web Analytics
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for SEO & Web Analytics
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