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Perf Manager · Chrome Performance Manager

Chrome extension by lj17628673421 · Productivity · Tools

  • Trader

A Chrome extension in Productivity · Tools with 18 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

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

Users
18
Rating
not rated yet
Users, last 15 days
+3
Version
1.6.7
Updated in the store
2026-07-27
Published
2026-07-27
Manifest
V3
Browser access
11 permissions, 2 site patterns

How it has moved

Users
+3 since 01.09
15-18 · 7 readings
  1. 2026-09-0115
  2. 2026-09-0318
  3. 2026-09-0417
  4. 2026-09-0715
  5. 2026-09-0818
  6. 2026-09-1017
  7. 2026-09-1518
Users
+3 since 01.09
15-18 · 7 readings
  1. 2026-09-0115
  2. 2026-09-0318
  3. 2026-09-0417
  4. 2026-09-0715
  5. 2026-09-0818
  6. 2026-09-1017
  7. 2026-09-1518

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

Every site you visit. This extension can read and change the content of any page you open.

  • Clear your browsing data browsingData
  • See the address and title of every tab you have open tabs
  • See the browser's internal processes processes
Show the remaining 8
  • Run its own code on the pages it can access scripting
  • Schedule work to run later alarms
  • Read site icons favicon
  • Open a panel beside the page sidePanel
  • Store data in your browser storage
  • Read your processor details system.cpu
  • Read how much memory your device has system.memory
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

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

The publisher

lj17628673421 publishes 6 listings we track, 57 users between them.

  1. LocalRead — Local Novel Reader lj17628673421 · Productivity · Tools · published 2026-07-29 26 users
  2. Magic Tower 50 lj17628673421 · Lifestyle · Games · published 2026-07-24 5 users
  3. Magic Tower 24 lj17628673421 · Lifestyle · Games · published 2026-07-23 3 users
Show 2 more from this publisher
  1. TextCure lj17628673421 · Productivity · Tools · published 2026-08-10 3 users
  2. Xin Xin Magic Tower lj17628673421 · Lifestyle · Games · published 2026-07-24 2 users

Like this one

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

  1. TabDiet Describes nearly the same job, smaller audience 7 users ★ 5.0
  2. TabMaster Pro - Memory & Session Manager Describes nearly the same job, smaller audience 4 users
  3. TabLite Describes nearly the same job, smaller audience 6 users
  4. Tab Memory Saver Describes nearly the same job, smaller audience 106 users ★ 4.6
  5. Tab Assassin (Auto-Cleanup) Describes nearly the same job, smaller audience 20 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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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.