Ext Ops Panel
Open dashboard

PDF Markly — PDF書き込み・チェック・署名

Chrome extension by strobofactory · Productivity · Tools

  • Established publisher

A Chrome extension in Productivity · Tools with 18 users, barely installed. Audience over the last 30 days: -2.

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

What the developer says, and 2 screenshots

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

Users
18
Rating
5.0 (1 ratings)
Users, last 30 days
-2
Rating, last 30 days
Steady over 30 days
Version
1.5.1
Updated in the store
2026-09-21
Published
2026-06-05
Manifest
V3
Browser access
1 permission

How it has moved

Users
-2 since 05.10
18-21 · 9 readings
  1. 2026-10-1021
  2. 2026-10-1620
  3. 2026-10-1820
  4. 2026-10-2121
  5. 2026-10-2220
  6. 2026-10-2419
  7. 2026-10-2520
  8. 2026-11-0118
  9. 2026-11-0418
Rating
unchanged since 05.10
reviewsrating 5.00 · 9 readings
  1. 2026-10-10reviews1rating5.00
  2. 2026-10-16reviews1rating5.00
  3. 2026-10-18reviews1rating5.00
  4. 2026-10-21reviews1rating5.00
  5. 2026-10-22reviews1rating5.00
  6. 2026-10-24reviews1rating5.00
  7. 2026-10-25reviews1rating5.00
  8. 2026-11-01reviews1rating5.00
  9. 2026-11-04reviews1rating5.00
Users
+1 since 31.08
17-21 · 20 readings
2026-09-10: released 1.5.02026-09-21: released 1.5.1
  1. 2026-08-3117
  2. 2026-09-0318
  3. 2026-09-0417
  4. 2026-09-0619
  5. 2026-09-1018released 1.5.0
  6. 2026-09-1720
  7. 2026-09-2121released 1.5.1
  8. 2026-09-2220
  9. 2026-09-2518
  10. 2026-09-2621
  11. 2026-09-2820
  12. 2026-10-1021
  13. 2026-10-1620
  14. 2026-10-1820
  15. 2026-10-2121
  16. 2026-10-2220
  17. 2026-10-2419
  18. 2026-10-2520
  19. 2026-11-0118
  20. 2026-11-0418
Rating
unchanged since 31.08
reviewsrating 5.00 · 20 readings
2026-09-10: released 1.5.02026-09-21: released 1.5.1
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-03reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-10reviews1rating5.00released 1.5.0
  6. 2026-09-17reviews1rating5.00
  7. 2026-09-21reviews1rating5.00released 1.5.1
  8. 2026-09-22reviews1rating5.00
  9. 2026-09-25reviews1rating5.00
  10. 2026-09-26reviews1rating5.00
  11. 2026-09-28reviews1rating5.00
  12. 2026-10-10reviews1rating5.00
  13. 2026-10-16reviews1rating5.00
  14. 2026-10-18reviews1rating5.00
  15. 2026-10-21reviews1rating5.00
  16. 2026-10-22reviews1rating5.00
  17. 2026-10-24reviews1rating5.00
  18. 2026-10-25reviews1rating5.00
  19. 2026-11-01reviews1rating5.00
  20. 2026-11-04reviews1rating5.00

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

  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.5.1
  2. Version 1.5.0

What changed recently

  1. Released version 1.5.1 (was 1.5.0)
  2. Released version 1.5.0 (was 1.4.3)

The publisher

strobofactory publishes 5 listings we track, 64 users between them. Listed website: strobofactory.net.

  1. ナンプレ - Number Place Puzzle strobofactory · Lifestyle · Games · published 2026-02-21 17 users
  2. Kanji Reading Quiz strobofactory · Productivity · Education · published 2026-03-03 14 users
  3. Zen Breath — 瞑想タイマー strobofactory · Lifestyle · Well Being · published 2026-03-03 10 users
Show 1 more from this publisher
  1. STROBOCOLOR strobofactory · Productivity · Tools · published 2026-05-28 5 users ★ 5.0

Like this one

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

  1. PDF Pen — Sign & Fill Instantly Describes nearly the same job, smaller audience 57 users
  2. Ink — PDF Editor Describes nearly the same job, smaller audience 3 users
  3. Fill & Sign PDF — PDF Editor, Form Filler & Markup, No Upload Describes nearly the same job, smaller audience 97 users
  4. FairFill – Fill & Sign PDF Forms Free, No Watermark Describes nearly the same job, smaller audience 4 users
  5. Sign PDF — Fill & Sign PDF Free, No Upload 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.

Want this mark on your extension in our catalog?

Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works

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

Connect it in a minute See what the panel does
Add a badge to your README or site

The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

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

HTML

<a href="https://extops.dev/extensions/nkejofibnbpdmdndekanbholgndijepf"><img src="https://extops.dev/extensions/nkejofibnbpdmdndekanbholgndijepf/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 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built