Click any element to read its styles, pull a whole page’s palette, fonts and images in one pass, check contrast as you go, and export straight to CSS, SCSS, JSON or Tailwind. Everything DevTools makes you dig for, one panel away.

Hi PH! I'm Leon, a CS student at ETH Zurich — PeekCSS is my first extension. I built it because CSS Peeper (500k+ Chrome users) never came to Firefox, and every "any alternative?" thread ended the same way. So: hover any element for its computed CSS, scan a whole page's colors and fonts in one pass, export straight to CSS/SCSS/JSON/Tailwind, and get AA/AAA contrast badges without opening DevTools. Free tier is genuinely free forever, no account needed. Nothing about the pages you inspect is ever sent anywhere — the only network call is an optional license check if you go Pro. Live on Firefox and Chrome now. What would you want from a tool like this that I've missed? I'll be here all day for questions.

Honestly, the click-to-copy css output is way faster than digging through devtools, and grabbing the whole palette in one pass is honestly kind of addictive. Solid pick.

PeekCSS

Inspect and Copy Style, Images and Fonts from any webpage

Inspect and Copy Style, Images and Fonts from any webpage