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Cardmarket Optimizer

Chrome extension · Lifestyle · Games

A Chrome extension in Lifestyle · Games with 208 users, barely installed.

Specific sites only: 3 match patterns.

What the developer says, and 2 screenshots

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

Users
208
Rating
5.0 (3 ratings)
Users, last 18 days
+101
Rating, last 30 days
Not watched long enough to say
Version
1.0.8
Updated in the store
2026-09-08
Published
2026-05-25
Manifest
V3
Browser access
3 permissions, 3 site patterns

How it has moved

Users
+101 since 01.09
107-208 · 11 readings
2026-09-08: released 1.0.8
  1. 2026-09-01107
  2. 2026-09-02126
  3. 2026-09-04140
  4. 2026-09-05143
  5. 2026-09-07149
  6. 2026-09-08155released 1.0.8
  7. 2026-09-10167
  8. 2026-09-13175
  9. 2026-09-15194
  10. 2026-09-17208
  11. 2026-09-18208
Rating
unchanged since 01.09
reviewsrating 5.00 · 11 readings
2026-09-08: released 1.0.8
  1. 2026-09-01reviews3rating5.00
  2. 2026-09-02reviews3rating5.00
  3. 2026-09-04reviews3rating5.00
  4. 2026-09-05reviews3rating5.00
  5. 2026-09-07reviews3rating5.00
  6. 2026-09-08reviews3rating5.00released 1.0.8
  7. 2026-09-10reviews3rating5.00
  8. 2026-09-13reviews3rating5.00
  9. 2026-09-15reviews3rating5.00
  10. 2026-09-17reviews3rating5.00
  11. 2026-09-18reviews3rating5.00
Users
+101 since 01.09
107-208 · 11 readings
2026-09-08: released 1.0.8
  1. 2026-09-01107
  2. 2026-09-02126
  3. 2026-09-04140
  4. 2026-09-05143
  5. 2026-09-07149
  6. 2026-09-08155released 1.0.8
  7. 2026-09-10167
  8. 2026-09-13175
  9. 2026-09-15194
  10. 2026-09-17208
  11. 2026-09-18208
Rating
unchanged since 01.09
reviewsrating 5.00 · 11 readings
2026-09-08: released 1.0.8
  1. 2026-09-01reviews3rating5.00
  2. 2026-09-02reviews3rating5.00
  3. 2026-09-04reviews3rating5.00
  4. 2026-09-05reviews3rating5.00
  5. 2026-09-07reviews3rating5.00
  6. 2026-09-08reviews3rating5.00released 1.0.8
  7. 2026-09-10reviews3rating5.00
  8. 2026-09-13reviews3rating5.00
  9. 2026-09-15reviews3rating5.00
  10. 2026-09-17reviews3rating5.00
  11. 2026-09-18reviews3rating5.00

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

Specific sites only: 3 match patterns.

  • https://cardmarket.com/*
  • https://www.cardmarket.com/*
  • https://h2ilohl6ll.execute-api.eu-central-1.amazonaws.com/*
  • See the address and title of every tab you have open tabs
  • Run its own code on the pages it can access scripting
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.0.8

What changed recently

  1. Package size changed
  2. Store description rewritten
  3. Released version 1.0.8 (was 1.0.7)

Like this one

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

  1. Cardmarket Companion: Pricing & Order Tools Describes nearly the same job, smaller audience 1k users ★ 4.9
  2. MarketButler Describes nearly the same job, smaller audience 5 users
  3. CardMarket Plus Describes nearly the same job, smaller audience 347 users ★ 4.0
  4. The Hobby Club Helper Describes nearly the same job, smaller audience 15 users ★ 5.0
  5. CardBeast - CardMarket Bulk Lister Describes nearly the same job, smaller audience 4 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.

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.