Updated on December 31 2019 • Martin Shishkov

NOTE: I do not receive any benefit from the links on this page (or from you by clicking on them)

1. Squoosh - Image Compression

https://squoosh.app

Squoosh helps me optimize my images with its superb compression algorithm as well as the option to resize images. It's a must have!

2. Optimizilla - Bulk Image Compression

https://imagecompressor.com

Another image optimizer but this time - in bulk. Upload up to 20 images at a time and get them back compressed. Super easy!

3. Adobe Color - Color Swatch/Palette Explorer

https://color.adobe.com/explore

The former Adobe Kuler - the tool that helps me explore new color combinations, what's trending or, if I have a couple of colors - what can I add to those in order to make a complete color palette.

4. Colorzilla - CSS gradient generator

https://www.colorzilla.com/gradient-editor

I never learned how to write CSS gradients. I've always been generating my gradients using this tool.

5. Google Fonts - Font Library and CDN

https://fonts.google.com

My favorite font library whenever I need a font.

6. check-domains - Sitemap Generator

http://www.check-domains.com/sitemap/index.php

Tool for generating a sitemap for your web app.

7. Pexels - Free Stock Images

https://www.pexels.com/

This is where I get my generic marketing/stock images when building a website.

8. Caniuse - HTML/CSS/JS feature browser support check tool

https://caniuse.com/

Not sure if you can use some browser API? Use caniuse in order to get a good view of what's the browser support as well as some nasty bugs in different browsers.

9. Toptal - CSS Backgrounds Pattern Library

https://www.toptal.com/designers/subtlepatterns/

A large collection of pattern images to use on repeat for your css backgrounds!

10. Unsplash - Free Image Gallery & Random Image Service

https://source.unsplash.com/

A convenient service for some mock images while you are developing an app! Just request https://source.unsplash.com/featured/?{KEYWORD},{KEYWORD} and you get an image that matches your keywords somehow. You can even add optional size: https://source.unsplash.com/1600x900/?nature,water

11. mockaroo - Realistic Data Generator

https://mockaroo.com/

Super useful service which helps you generate a large set of custom defined JSON schema items. You can add object fields to define the schema you want. There are lots of predefined data types on which you can also set restrictions etc. Totally worth it!