Speed performance
Script parsing time and payload size can be reduced by minifying JavaScript files. SeoChecker shows in a table like the one below the JavaScript files of a web page that have not been minified; at the same time, it provides data on their size and on the potential savings in KiB (kibibytes) that minification would entail:
Minification is a process that aims to make code shorter: for example, unnecessary lines of code are made shorter but still valid, and whitespace is removed. Among the most widely used JavaScript compression tools is Terser, and in webpack v4 a plugin for this library is included by default to create minified build files.
Learn more about Speed performance
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
Test your Progressive Web App. Check the performance of your PWA, try to deliver high quality, engaging, fast and capable apps on every devices.
Server and proxy
View and download any website’s Source Code. Get the HTML source code of any online web page from any browser, devices and Os system.
Validate your Css file sheet with W3C validation Service. Check if the markup of your Cascading style Sheet document is W3C compliant.
Builders and generators
Generate feature-rich htaccess files: www rewrite, hotlink prevention, custom error pages, cache rules and redirects.
Google
Find out how Google calculates your overall Performance score. Drag the cursors to understand what thresholds you must be aiming for achieving a good performance
Content
Explore and compare keywords. Find out what customers are looking for. Select country, date, category, search type and compare keywords.
Retrieve remote Server Status Code and Headers. Get HTTP Status code, Headers info, Cache-control and data from a given URL.
Social Tracking script
Measure and track user interactions with your contents. Track all the events you want: downloads, clicks, video plays, checkout flow, engagement.