Performance
A selected resource to help you test and how performant your website. Get insights into how performant your website is.
IloveImg
Resize multiple JPG, PNG, SVG or GIF images in seconds easily and for free. Bulk resize imag...
Responsive Breakpoints Generator
The Responsive Image Breakpoints Generator efficiently analyzes each hi-res image and finds ...
Instant.page
Make your site’s pages instant in 1 minute and improve your conversion rate by 1%.
Progressive Tooling
A curated list of progressive tools to optimize the performance of your web project
Pagespeed Insights
Make your web pages fast on all devices
Compressor
Optimize and compress JPEG, PNG, SVG, GIF and WEBP images online. Compress, resize and renam...
Bundlephobia
Bundlephobia helps you find the performance impact of npm packages. Find the size of any jav...
Responsive Web Test
Test your website across mobile, tablet, and desktop breakpoints.
Webhint
webhint, a linting tool for the web focused on best practices and flexibility for the end us...