Extension Tracker

CSS Peeper

400,000 users Rated 2.63 from 476 ratings Last updated 11 Sep 2026

By CSS Peeper Live in the Chrome Web Store mbnbehikldjhnfehhnaidhjhoofhpehk Search Google ↗ Last checked 9 Nov 2026, 13:41 UTC

The listing

What the Chrome Web Store shows, as of the last check

Inspect website styles in seconds. Supercharge your workflow, and save hours of work.Summary from the listing
Developer
CSS Peeper
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Developer Tools
First published
16 Dec 2016
Last updated
11 Sep 2026
Version
1.2.3
Size
1.79 MiB
Minimum Chrome
88
Languages
1 language

English

Website
https://csspeeper.com/
Support page
https://csspeeper.featurebase.app/en/help/articles/9571335-getting-started
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
400K450K500KTracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct1 Nov8 Nov2026-09-27: 400,000 users2026-09-28: 400,000 users2026-10-05: 400,000 users2026-10-12: 400,000 users2026-10-18: 500,000 users2026-10-26: 500,000 users2026-11-02: 400,000 users2026-11-09: 400,000 users400,000400K450K500KTracking began27 Sep18 Oct8 Nov2026-09-27: 400,000 users2026-09-28: 400,000 users2026-10-05: 400,000 users2026-10-12: 400,000 users2026-10-18: 500,000 users2026-10-26: 500,000 users2026-11-02: 400,000 users2026-11-09: 400,000 users400K
Average rating
3.003.504.0027 Sep11 Oct25 Oct8 Nov2.633.003.504.0027 Sep18 Oct8 Nov2.63
Number of ratings
47048027 Sep11 Oct25 Oct8 Nov47647048027 Sep18 Oct8 Nov476
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-11-09400,0002.63476
2026-11-02400,0002.63476
2026-10-26500,0002.63476
2026-10-18500,0002.63476
2026-10-12400,0004.10477
2026-10-05400,0004.10476
2026-09-28400,0004.10476
2026-09-27400,0004.10476
Users, 7 days
No change
since a week ago
Users, 30 days
No change
+0.0%
Rank
#524
by users, of 292,131 extensions
In its category
#52
of 30,442 in Developer Tools

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

Developer history

Moves to another publisher account and new contact emails, newest first

No move to another account and no new contact email since tracking began on 27 Sep 2026.

We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →

What it can access

From the extension's manifest, in plain language

Every websiteIt can read and change your data on all the sites you visit.
Sites
  • http://*/*Every website
  • https://*/*Every website
Sites where it runs scripts
  • <all_urls>Every website
Browser features
  • activeTabThe tab you're on, only after you click the extension
  • alarmsRun tasks on a schedule
  • scriptingRun scripts on sites it can reach
  • sidePanelShow a side panel
  • storageSave settings and data in your browser
  • tabsRead the addresses and titles of your tabs
  • unlimitedStorageStore more data than the usual limit
  • webRequestWatch network requests on the sites it can reach

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 9 Nov 2026, 13:41 UTC; next check around 16 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “CSS Peeper” (mbnbehikldjhnfehhnaidhjhoofhpehk). Chrome Web Store data, last checked 2026-11-09. https://extensiontracker.com/extension/mbnbehikldjhnfehhnaidhjhoofhpehk. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_mbnbehikldjhnfehhnaidhjhoofhpehk,
  title   = {CSS Peeper (mbnbehikldjhnfehhnaidhjhoofhpehk)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-09},
  url     = {https://extensiontracker.com/extension/mbnbehikldjhnfehhnaidhjhoofhpehk},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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