Accessibility
In order to avoid that your page renders in ways you did not expect, you need to specify a doctype.
If a page has no <!DOCTYPE html> declaration, SeoChecker will notify it.
You need to add the doctype declaration at the top of the HTML document.
Learn more about Accessibility
On page SEO performance and page checkup.
Over 300 parameters for the deeper page analysis.
Share this Guide
Did you like it? Share it!
Web tools for modern developers. Try these one!
Over 50 generators, builders and validators to improve your SEO and web performances
Tester and validators
Find out which theme, version, author and license a WordPress site is using trought Wordpress Theme detector tool
Builders and generators
Layout Grid Calculator: set your grid system, page width, margin, gutter and columns. Design your layout grid system for web pages and print design.
Generate icons for web, Android, iOs, Microsoft and Apps. Show a graphical representation of your site within browser’s address bar.
Analytics Google Tracking script
Generate URLs for Google Play Campaign Measurement. Add Google Analytics Campaigns parameters to Google Play Urls - Android SDK.
Is your web page mobile-friendly? Ready for mobile-first indexing? Test whether a page on your site is mobile-friendly or not based on Googlebot User-agent.
Converters
Convert instantly color codes from RGB (red, green, blue) to HEX triplets color schema and vice versa. Insert color and try it for free.
Social Tester and validators
Get Facebook data and engagement count by URL. Retrieve Open Graph data, "share" count, comment count and engagement from url.
Images
Zoom in, scale, flip, rotate, crop and resize your images. Upload and edit yours images file for free with dunplab image editor.