CSSPeek
Click any element on a page to instantly see its computed CSS…
Click any element on a page to instantly see its computed CSS properties, grouped and copyable.
CSSPeek is a free Chrome extension by lern-digital.de. Everything runs in your browser — no signup, no API key, no tracking. Install once, use offline.
Free · Chrome 114+ · Manifest V3 · Works in Edge & Brave · No signup
3 minutes to get started
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1
Install
Download ZIP, unzip, open chrome://extensions, enable Developer Mode, click "Load unpacked", select the folder.
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2
Open
Click the CSSPeek icon in your toolbar to open the popup.
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3
Use
Use the feature. Results stay on your device unless you explicitly copy or download them.
What CSSPeek does
Remembers settings
Your preferences persist between sessions, locally only.
Fast
Instant results — no servers, no round-trips.
Private by default
All processing happens on your device. No tracking, no accounts.
Free
No subscription, no API key, no sign-up.
Works in Chrome & Edge & Brave
Manifest V3 compatible — runs wherever Chromium runs.
Permissions & why
Access the tab you explicitly activate the extension on — only on your click, never in the background.
Inject the extension's feature logic into the active page, only when triggered by you.
Save your preferences and results in Chrome's local storage on your device.
Your data stays yours
CSSPeek runs entirely locally in your browser. No data ever leaves your device. No analytics, no tracking, no telemetry. All settings and results stay in Chrome's local storage on your machine.
Try it out
Installed in under 1 minute.
Download CSSPeek v1.0.0