5 Free Conversion Tools Every Frontend Dev Should Bookmark

Aleeza Crasco — Sat, 20 Jun 2026 10:10:54 +0000

Every frontend project eventually hits the same small annoyance: a designer hands you a HEX code, your code needs RGB, or you're debugging a CSS variable and need to know what #3B82F6 actually looks like in rgba(). Here are five free tools that handle this without ads, signups, or upload limits.

## 1. HEX to RGB Converter
Paste any HEX value (3, 6, or 8-digit) and get RGB, RGBA, HSL, and CMYK instantly. Useful when you're translating a brand stylesheet into a React component or need the alpha value from an 8-digit hex.

## 2. RGB to HEX Converter
The reverse direction — handy when a design tool exports RGB but your CSS needs hex.

## 3. Color Picker
Pick a color visually and get every format at once, instead of eyeballing a value.

## 4. Favicon & App Icon Generator
Upload any image and instantly generate a complete icon package, website favicons, iOS, Android, macOS, Windows tiles, PWA icons, and website logo strip. Download everything as a ready to use ZIP.

## 5. Image Compressor & Converter
Reduce file size without losing visible quality. Convert between JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF.

None of these need an account, and they all run instantly in-browser. What's your go to color tool? Drop it in the comments always looking for new ones.

DEV Community: Aleeza Crasco

5 Free Conversion Tools Every Frontend Dev Should Bookmark