Download
Get PeekCSS
Free to install, no account required. Works with Firefox and every major Chromium browser.
Any Chromium-based browser that supports installing from the Chrome Web Store will work, even if it's not listed by name.
Up and running in four steps
1
Add the extension
Install from your browser’s store — one click, no account needed.
2
Pin the sidebar
Open the PeekCSS sidebar and pin it. That’s your inspector home base.
3
Hover & click
Press W to start inspecting. Hover to highlight, click to load the CSS.
4
Unlock Pro (optional)
Bought a plan? Paste your license token in Settings to unlock everything.
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