Sitelab · Code Modernity Analysis
Examines a site's CSS, JavaScript and HTML and dates how current it is, year by year, while detecting the technologies and libraries in use.
How current is a site's code?
Enter an address and we'll download the site's CSS, JavaScript and HTML, date it by the year each feature appeared, and work out its modernity score and the technologies it relies on.
To see it for your own site, enter your address above and press Scan the Code.
Modernity score
The CSS, JS and HTML are dated year by year, producing a score out of 100 and a letter grade.
Technology detection
Frameworks, libraries, CMSs and their versions are recognized from traces in the code.
Your code only
Code from third-party giants such as Google isn't mixed into the score; external sources are listed in their own section.
Technical hygiene
Compression, HTTP/3, modern image formats and security headers.