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Page Ruler

Chrome extension by leocompson · Productivity · Tools

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A Chrome extension in Productivity · Tools with 500 000 users, a widely installed extension. Audience over the last 30 days: unchanged.

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
500 000
Rating
3.9 (103 ratings)
Users, last 30 days
Unchanged (the store rounds this count to 100 000, so it moves only between steps)
Rating, last 30 days
Steady over 30 days
Version
0.1.8
Updated in the store
2026-07-13
Published
2021-05-27
Manifest
V3
Browser access
3 permissions

How it has moved

Users
unchanged since 30.09
500k · 2 readings
  1. 2026-10-14500k
  2. 2026-10-30500k
Rating
-0.010 since 30.09
reviewsrating 3.893-3.903 · 2 readings
  1. 2026-10-14reviews103rating3.893
  2. 2026-10-30reviews103rating3.893
Users
unchanged since 31.08
500k · 4 readings
  1. 2026-08-31500k
  2. 2026-09-16500k
  3. 2026-10-14500k
  4. 2026-10-30500k
Rating
-0.038 since 31.08
reviewsrating 3.893-3.931 · 4 readings
  1. 2026-08-31reviews102rating3.931
  2. 2026-09-16reviews103rating3.903
  3. 2026-10-14reviews103rating3.893
  4. 2026-10-30reviews103rating3.893

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times 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
  • 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

leocompson publishes 20 listings we track, 794k users between them.

  1. HLS Downloader leocompson · Productivity · Tools · published 2020-05-23 100k users ★ 3.3
  2. Draw on Page leocompson · Productivity · Tools · published 2020-08-25 100k users ★ 3.5
  3. Timer, Alarm & Stopwatch leocompson · Productivity · Tools · published 2020-06-02 40k users ★ 3.1
Show 5 more from this publisher
  1. Extension Source Downloader leocompson · Productivity · Tools · published 2020-11-24 30k users ★ 4.3
  2. Offline Mode leocompson · Productivity · Tools · published 2021-03-02 5k users ★ 3.5
  3. Cookie Editor leocompson · Productivity · Tools · published 2020-08-04 5k users ★ 2.7
  4. Code Beautifier (JS, CSS, HTML) leocompson · Productivity · Developer · published 2021-01-06 4k users ★ 5.0
  5. No Service Worker leocompson · Make Chrome Yours · Functionality · published 2021-07-29 4k users ★ 4.3

Like this one

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

  1. Measure-it Describes nearly the same job, with an established audience 70k users ★ 3.5
  2. Page Ruler Pro Describes nearly the same job, smaller audience 26 users ★ 5.0
  3. Simple Ruler Beta Describes nearly the same job, smaller audience 4k users ★ 2.8
  4. MeasureMate - Page Ruler Describes nearly the same job, smaller audience 2 users
  5. Web Ruler Describes nearly the same job, smaller audience 34 users

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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Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/jcbmcnpepaddcedmjdcmhbekjhbfnlff/badge.svg)](https://extops.dev/extensions/jcbmcnpepaddcedmjdcmhbekjhbfnlff)

HTML

<a href="https://extops.dev/extensions/jcbmcnpepaddcedmjdcmhbekjhbfnlff"><img src="https://extops.dev/extensions/jcbmcnpepaddcedmjdcmhbekjhbfnlff/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-14. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built