Nibbler is our free tool for testing websites, created by Silktide
Want to know more about your website? Enter the address of any website and Nibbler will give you a report scoring the website out of 10 for various important criteria including accessibility, SEO, social media and technology.
Nibbler is free and always will be!
Get loads of information about your website without having to pay anything. If you want even more information though, you might want to consider upgrading to SiteBeam, our more detailed website testing software.
Claim websites & showcase them on your profile
After you've tested your website, claim it and add it to your own profile. Your profile then becomes a place you can showcase all the websites you're most proud of!
Customise your profile by uploading your own custom background, or choose from one of our examples.
Collect Nibbler badges
Websites are awarded badges for cool things. When you claim a website as your own its badges will be added to your profile and increase your score. There's some cool badges like these:
W3C Apprentice
Awarded to users when they claim 3 W3C compliant websites.
Hot off the press
Awarded to sites that have 4 or more feed articles in the past 30 days.
HTML5 Maestro
Awarded to users when they claim 8 HTML5 websites.
Video star
Awarded when an embedded YouTube video is found.
Multilingual
Awarded to sites containing content in more than one language.
IE6 Advocate
Awarded to any website that has a specific IE6 stylesheet.