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PDF Markly — PDF書き込み・チェック・署名

Chrome extension by strobofactory · Productivity · Tools

A Chrome extension in Productivity · Tools with 18 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 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 17 days
+1
Rating, last 30 days
Not watched long enough to say
Version
1.5.0
Updated in the store
2026-09-10
Published
2026-06-05
Manifest
V3
Browser access
1 permission

How it has moved

Users
+1 since 31.08
17-19 · 6 readings
2026-09-10: released 1.5.0
  1. 2026-08-3117
  2. 2026-09-0318
  3. 2026-09-0417
  4. 2026-09-0619
  5. 2026-09-1018released 1.5.0
  6. 2026-09-1618
Rating
unchanged since 31.08
reviewsrating 5.00 · 6 readings
2026-09-10: released 1.5.0
  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. 2026-09-16reviews1rating5.00
Users
+1 since 31.08
17-19 · 6 readings
2026-09-10: released 1.5.0
  1. 2026-08-3117
  2. 2026-09-0318
  3. 2026-09-0417
  4. 2026-09-0619
  5. 2026-09-1018released 1.5.0
  6. 2026-09-1618
Rating
unchanged since 31.08
reviewsrating 5.00 · 6 readings
2026-09-10: released 1.5.0
  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. 2026-09-16reviews1rating5.00

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.

  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.5.0

What changed recently

  1. Released version 1.5.0 (was 1.4.3)

The publisher

strobofactory publishes 5 listings we track, 70 users between them. Listed website: strobofactory.net.

  1. ナンプレ - Number Place Puzzle strobofactory · Lifestyle · Games · published 2026-02-21 23 users
  2. Kanji Reading Quiz strobofactory · Productivity · Education · published 2026-03-03 13 users
  3. Zen Breath — 瞑想タイマー strobofactory · Lifestyle · Well Being · published 2026-03-03 11 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 37 users
  2. Ink — PDF Editor Describes nearly the same job, smaller audience 3 users (last published figure)
  3. Fill & Sign PDF — PDF Editor, Form Filler & Markup, No Upload Describes nearly the same job, smaller audience 58 users
  4. Sign PDF — Fill & Sign PDF Free, No Upload Describes nearly the same job, smaller audience 8 users ★ 5.0
  5. ScribblePDF Describes nearly the same job, smaller audience 8 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.

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.