Ext Ops Panel
Open dashboard

Koha MARC Helper

Chrome extension by Dr. Amalendu Das, Librarian, Nabadwip, Vidyasagar College, Nabadwip, Nadia, West Bengal-741302 · Productivity · Tools

A Chrome extension in Productivity · Tools with 34 users, barely installed. Audience over the last 30 days: +14.

Specific sites only: 23 match patterns.

What the developer says, and 4 screenshots

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

Users
34
Rating
5.0 (4 ratings)
Users, last 30 days
+14
Rating, last 30 days
Steady over 30 days
Version
1.2
Updated in the store
2026-10-26
Published
2026-09-22
Manifest
V3
Browser access
2 permissions, 23 site patterns

How it has moved

Users
+14 since 05.10
20-34 · 18 readings
2026-10-27: released 1.2
  1. 2026-10-0520
  2. 2026-10-0830
  3. 2026-10-1031
  4. 2026-10-1322
  5. 2026-10-1623
  6. 2026-10-1722
  7. 2026-10-1921
  8. 2026-10-2020
  9. 2026-10-2123
  10. 2026-10-2222
  11. 2026-10-2320
  12. 2026-10-2423
  13. 2026-10-2528
  14. 2026-10-2830
  15. 2026-10-2932
  16. 2026-10-3033
  17. 2026-11-0134
  18. 2026-11-0434
Rating
unchanged since 05.10
reviewsrating 5.00 · 18 readings
2026-10-27: released 1.2
  1. 2026-10-05reviews3rating5.00
  2. 2026-10-08reviews4rating5.00
  3. 2026-10-10reviews4rating5.00
  4. 2026-10-13reviews4rating5.00
  5. 2026-10-16reviews4rating5.00
  6. 2026-10-17reviews4rating5.00
  7. 2026-10-19reviews4rating5.00
  8. 2026-10-20reviews4rating5.00
  9. 2026-10-21reviews4rating5.00
  10. 2026-10-22reviews4rating5.00
  11. 2026-10-23reviews4rating5.00
  12. 2026-10-24reviews4rating5.00
  13. 2026-10-25reviews4rating5.00
  14. 2026-10-28reviews4rating5.00
  15. 2026-10-29reviews4rating5.00
  16. 2026-10-30reviews4rating5.00
  17. 2026-11-01reviews4rating5.00
  18. 2026-11-04reviews4rating5.00
Users
+34 since 23.09
0-34 · 22 readings
2026-09-23: appeared in the store2026-09-29: released 1.12026-10-27: released 1.2
  1. 2026-09-230appeared in the store
  2. 2026-09-254
  3. 2026-09-266
  4. 2026-09-287
  5. 2026-10-0520
  6. 2026-10-0830
  7. 2026-10-1031
  8. 2026-10-1322
  9. 2026-10-1623
  10. 2026-10-1722
  11. 2026-10-1921
  12. 2026-10-2020
  13. 2026-10-2123
  14. 2026-10-2222
  15. 2026-10-2320
  16. 2026-10-2423
  17. 2026-10-2528
  18. 2026-10-2830
  19. 2026-10-2932
  20. 2026-10-3033
  21. 2026-11-0134
  22. 2026-11-0434
Rating
+5.00 since 23.09
reviewsrating 0.00-5.00 · 22 readings
2026-09-23: appeared in the store2026-09-29: released 1.12026-10-27: released 1.2
  1. 2026-09-23reviews0rating0.00appeared in the store
  2. 2026-09-25reviews0rating0.00
  3. 2026-09-26reviews0rating0.00
  4. 2026-09-28reviews0rating0.00
  5. 2026-10-05reviews3rating5.00
  6. 2026-10-08reviews4rating5.00
  7. 2026-10-10reviews4rating5.00
  8. 2026-10-13reviews4rating5.00
  9. 2026-10-16reviews4rating5.00
  10. 2026-10-17reviews4rating5.00
  11. 2026-10-19reviews4rating5.00
  12. 2026-10-20reviews4rating5.00
  13. 2026-10-21reviews4rating5.00
  14. 2026-10-22reviews4rating5.00
  15. 2026-10-23reviews4rating5.00
  16. 2026-10-24reviews4rating5.00
  17. 2026-10-25reviews4rating5.00
  18. 2026-10-28reviews4rating5.00
  19. 2026-10-29reviews4rating5.00
  20. 2026-10-30reviews4rating5.00
  21. 2026-11-01reviews4rating5.00
  22. 2026-11-04reviews4rating5.00

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

Specific sites only: 23 match patterns.

  • https://www.googleapis.com/*
  • https://oauth.oclc.org/*
  • https://americas.discovery.api.oclc.org/*
Show the remaining 9
  • https://api.isbndb.com/*
  • https://gutendex.com/*
  • https://archive.org/*
  • https://openlibrary.org/*
  • https://lx2.loc.gov/*
  • https://indcat.inflibnet.ac.in/*
  • https://isbn.gov.in/*
  • https://sru.k10plus.de/*
  • https://*.alma.exlibrisgroup.com/*

The full permission history for this extension

Version history

  1. Version 1.2
  2. Version 1.1 · Asked for more permissions (25, was 12)

What changed recently

  1. Package size changed
  2. Released version 1.2 (was 1.1)
  3. Package size changed
Show the remaining 4
  1. Asked for more permissions (25, was 12)
  2. Store description rewritten
  3. Released version 1.1 (was 1.0)
  4. Appeared in the store

The publisher

Dr. Amalendu Das, Librarian, Nabadwip, Vidyasagar College, Nabadwip, Nadia, West Bengal-741302.

Like this one

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

  1. MARC Viewer X Describes nearly the same job, smaller audience 6 users
  2. Fondren Library Catalog ISBN Search Describes nearly the same job, smaller audience 8 users
  3. LCSH Recommendation Tool Describes nearly the same job, smaller audience 342 users ★ 5.0
  4. Trio Catalog Describes nearly the same job, smaller audience 5 users
  5. Goodreads Library Checker Describes nearly the same job, smaller audience 7 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.

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/hgiojehcfeaebkojkgpgiljdpncielcb/badge.svg)](https://extops.dev/extensions/hgiojehcfeaebkojkgpgiljdpncielcb)

HTML

<a href="https://extops.dev/extensions/hgiojehcfeaebkojkgpgiljdpncielcb"><img src="https://extops.dev/extensions/hgiojehcfeaebkojkgpgiljdpncielcb/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