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DuoSub AI - Dual Subtitles & Language Learning

Chrome extension by fastmandotcom · Productivity · Education

  • Trader

A Chrome extension in Productivity · Education with 4 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

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

Users
4
Rating
not rated yet
Users, last 2 days
unchanged
Version
1.0.2
Updated in the store
2026-09-15
Published
2026-09-14
Manifest
V3
Browser access
11 permissions, 1 site pattern

How it has moved

Users
unchanged since 15.09
4 · 2 readings
2026-09-15: appeared in the store
  1. 2026-09-154appeared in the store
  2. 2026-09-164
Users
unchanged since 15.09
4 · 2 readings
2026-09-15: appeared in the store
  1. 2026-09-154appeared in the store
  2. 2026-09-164

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

Every site you visit. This extension can read and change the content of any page you open.

  • See the address and title of every tab you have open tabs
  • Block or redirect requests on the sites it can access declarativeNetRequestWithHostAccess
  • Run its own code on the pages it can access scripting
Show the remaining 8
  • Act on the current tab, but only after you click it activeTab
  • Declares commands
  • Show you notifications notifications
  • Run work in a hidden page offscreen
  • Store data in your browser storage
  • Read your display setup system.display
  • Store data in your browser without the usual size limit unlimitedStorage
  • Declares windows

The full permission history for this extension

What changed recently

  1. Appeared in the store

The publisher

fastmandotcom.

Like this one

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

  1. Dual Subtitles Describes nearly the same job, smaller audience 190 users ★ 4.5
  2. Double Subtitles Describes nearly the same job, smaller audience 115 users ★ 5.0
  3. Dual Subs - Learn languages with dual subtitles Describes nearly the same job, smaller audience 7 users
  4. Dual Sub Describes nearly the same job, smaller audience 19 users
  5. Dual Subtitles & AI Translation - InterSub Describes nearly the same job, with an established audience 20k users ★ 4.6

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.

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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.