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Chrome extension by jokycn0912 · Productivity · Tools

  • Established publisher

A Chrome extension in Productivity · Tools with 24 users, barely installed. Audience over the last 30 days: +15.

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
24
Rating
not rated yet
Users, last 30 days
+15
Version
0.1.1
Updated in the store
2026-11-02
Published
2026-08-07
Manifest
V3
Browser access
2 permissions

How it has moved

Users
+15 since 08.10
8-25 · 16 readings
2026-11-02: released 0.1.12026-11-04: gained the good publisher record badge
  1. 2026-10-0910
  2. 2026-10-109
  3. 2026-10-138
  4. 2026-10-1610
  5. 2026-10-1711
  6. 2026-10-1813
  7. 2026-10-2211
  8. 2026-10-2415
  9. 2026-10-2516
  10. 2026-10-2719
  11. 2026-10-2921
  12. 2026-10-3123
  13. 2026-11-0122
  14. 2026-11-0324
  15. 2026-11-0525
  16. 2026-11-0724
Users
+19 since 31.08
5-25 · 27 readings
2026-11-02: released 0.1.12026-11-04: gained the good publisher record badge
  1. 2026-08-315
  2. 2026-09-026
  3. 2026-09-058
  4. 2026-09-077
  5. 2026-09-098
  6. 2026-09-137
  7. 2026-09-176
  8. 2026-09-218
  9. 2026-09-279
  10. 2026-09-288
  11. 2026-10-049
  12. 2026-10-0910
  13. 2026-10-109
  14. 2026-10-138
  15. 2026-10-1610
  16. 2026-10-1711
  17. 2026-10-1813
  18. 2026-10-2211
  19. 2026-10-2415
  20. 2026-10-2516
  21. 2026-10-2719
  22. 2026-10-2921
  23. 2026-10-3123
  24. 2026-11-0122
  25. 2026-11-0324
  26. 2026-11-0525
  27. 2026-11-0724

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.

The full permission history for this extension

Version history

  1. Version 0.1.1

What changed recently

  1. Gained the Established publisher badge
  2. Released version 0.1.1 (was 0.1.0)

The publisher

jokycn0912. Listed website: lumospdf.com.

Like this one

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

  1. PDF Merger & Stamp: Local & Secure Describes nearly the same job, smaller audience 27 users ★ 3.7
  2. PdfStamper Describes nearly the same job, smaller audience 6 users ★ 5.0
  3. Add Image to PDF Describes nearly the same job, smaller audience 425 users ★ 5.0
  4. Add signature to PDF Describes nearly the same job, smaller audience 323 users ★ 5.0
  5. Trust Less Sign Describes nearly the same job, smaller audience 3 users (last published figure)

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

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-07. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built