Google's image compression web tool -- Squoosh

[Squoosh](https://squoosh.app) is an image compression web app from Google Chrom Labs. As the team said, it uses WebAssembly to do more with the codes the browser doesn't have baked in. Although it needs to be loaded in a browser, it uses local resources. After launched once, you can use it off line.

image compression online

An online MS paint written in JS

[jspaint.app](https://jspaint.app) is a free web-based paint tool. It perfectly imitate the look and feel of the classic MS paint. Now you use MS paint anywhere. See more information from [the project's GitHub pagess](https://github.com/1j01/jspaint).

image paint online