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CSS Sniffer

Chrome extension by Booma Studio · Productivity · Developer

A Chrome extension in Productivity · Developer with 6 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
6
Rating
not rated yet
Users, last 17 days
-2
Version
2.0.0
Updated in the store
2026-03-20
Published
2026-03-20
Manifest
V3
Browser access
5 permissions

How it has moved

Users
-2 since 01.09
6-8 · 8 readings
  1. 2026-09-018
  2. 2026-09-058
  3. 2026-09-067
  4. 2026-09-088
  5. 2026-09-097
  6. 2026-09-158
  7. 2026-09-166
  8. 2026-09-176
Users
-2 since 01.09
6-8 · 8 readings
  1. 2026-09-018
  2. 2026-09-058
  3. 2026-09-067
  4. 2026-09-088
  5. 2026-09-097
  6. 2026-09-158
  7. 2026-09-166
  8. 2026-09-176

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
Show the remaining 2
  • Open a panel beside the page sidePanel
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Booma Studio publishes 6 listings we track, 2k users between them. Listed website: boomastudio.com.

  1. Unsender for Instagram Booma Studio · Productivity · Tools · published 2026-03-19 2k users ★ 3.2
  2. Unsender for Facebook Booma Studio · Productivity · Tools · published 2026-03-12 223 users ★ 1.0
  3. Instagram Sent Requests Remover Booma Studio · Productivity · Communication · published 2026-03-30 138 users ★ 2.5
Show 2 more from this publisher
  1. LinkedIn Auto Connect Booma Studio · Productivity · Tools · published 2026-03-13 37 users
  2. ShopifySEO Pro - Complete SEO Analyzer Booma Studio · Productivity · Developer · published 2026-03-18 12 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. PeekCSS Describes nearly the same job, smaller audience 12 users ★ 5.0
  2. CSS Lens Describes nearly the same job, smaller audience 11 users ★ 5.0
  3. InspectCSS - CSS Inspector & Tailwind Describes nearly the same job, smaller audience 7 users
  4. CSS Scanner Pro Describes nearly the same job, smaller audience 147 users ★ 5.0
  5. CSS Xray Describes nearly the same job, smaller audience 11 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.