Test your Websites Loading Speed and other fun data
https://pagespeed.web.dev/

Wappalyzer
https://www.wappalyzer.com/
You just write the URL of the web page you want to analyze. Wappanalyzer says that it's using Wordpress, typekit, greensock, and jquery. If you take a look at the source code, you can see that it's right.

JPEG MAKER:
https://placehold.co/1300x867/jpg