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UI Inspector - Visual CSS Editor

Chrome extension by Mr Violets · Productivity · Developer

  • Featured
  • Established publisher

A Chrome extension in Productivity · Developer with 5 000 users, a small but real audience.

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

What the developer says, and 4 screenshots

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

Users
5 000
Rating
4.0 (21 ratings)
Users, last 15 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
2.4.4
Updated in the store
2026-04-05
Published
2024-11-01
Manifest
V3
Browser access
8 permissions

How it has moved

Users
unchanged since 01.09
5k · 2 readings
  1. 2026-09-015k
  2. 2026-09-155k
Rating
unchanged since 01.09
reviewsrating 4.00 · 2 readings
  1. 2026-09-01reviews21rating4.00
  2. 2026-09-15reviews21rating4.00
Users
unchanged since 01.09
5k · 2 readings
  1. 2026-09-015k
  2. 2026-09-155k
Rating
unchanged since 01.09
reviewsrating 4.00 · 2 readings
  1. 2026-09-01reviews21rating4.00
  2. 2026-09-15reviews21rating4.00

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
  • Declares commands
Show the remaining 5
  • Add items to the right-click menu contextMenus
  • React to what a page contains without reading it declarativeContent
  • Change your browser's font settings fontSettings
  • 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

Mr Violets publishes 9 listings we track, 79k users between them. Listed website: ui-inspector.com.

  1. Screen Ruler - Measure and Inspect the Web Mr Violets · Productivity · Developer · published 2024-03-29 60k users ★ 4.3
  2. Stay Awake: Keep Your Computer Awake Mr Violets · Productivity · Workflow · published 2023-05-28 10k users ★ 4.7
  3. Marble: Automatically Organized Tab Groups Mr Violets · Productivity · Workflow · published 2023-08-22 2k users ★ 4.6
Show 5 more from this publisher
  1. Deep Tab Search: Tab Switcher & Search Mr Violets · Productivity · Workflow · published 2024-01-09 880 users ★ 3.2
  2. Quilt - Tiling Window Manager Mr Violets · Productivity · Workflow · published 2023-08-08 774 users ★ 5.0
  3. CSS Viewer - Inspect & Copy Any Element's CSS Mr Violets · Productivity · Developer · published 2026-04-10 466 users
  4. Pointer - Element Inspector for DevTools Mr Violets · Productivity · Developer · published 2025-06-25 201 users ★ 3.0
  5. AltCue - Tab Switcher Mr Violets · Make Chrome Yours · Functionality · published 2025-01-17 audience not published ★ 1.0

Like this one

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

  1. UI Surgeon Describes nearly the same job, smaller audience 17 users ★ 5.0
  2. Style Editor Describes nearly the same job, smaller audience 20 users
  3. Wisiwig: UI Design and Inspect Tool Describes nearly the same job, smaller audience 618 users ★ 5.0
  4. CSS Inspector Pro Describes nearly the same job, smaller audience 64 users ★ 5.0
  5. StyleForge — Live CSS Editor Describes nearly the same job, smaller audience 32 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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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.