Check if your HTML markup is valid and contains no errors. Official W3C tool.
Check if your CSS code is valid and contains no errors. Official W3C tool.
Easy tool to test your webpage for performance. You can also use it in Chrome DevTools (Lighthouse).
Compressing images is the most important performance optimization. This is my #1 tool to do so!
Another tool to compress up to 20 JPEG and PNG images while keeping a good level of quality.
Just upload an image and this tool creates favicons for your website for all platforms.
Extremely popular checklist to check if your website's code is actually ready for deployment.
Another checklist, this one is to catch common usability problems of your website.
An excellent guide to optimize your webpage speed. This is something many devs overlook!
Get a SEO review of your website to address common issues, and get ahead of your competition.
Get free insights about website traffic, visitors and conversions. A must for every website.
A privacy-first alternative to Google Analytics. Doesn't require annoying GDPR cookie notices!
My #1 go-to platform to host static websites. They have a very generous free plan!
If you need to buy a domain name, this is the place to go. I have all my domains here.