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Captionz - YouTube Dual Subtitles & A-B Repeat

Chrome extension by River · Productivity · Education

A Chrome extension in Productivity · Education with 100 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
100
Rating
not rated yet
Users, last 15 days
-2
Version
1.2.0
Updated in the store
2026-01-26
Published
2026-01-14
Manifest
V3
Browser access
3 permissions

How it has moved

Users
-2 since 01.09
93-102 · 9 readings
  1. 2026-09-01102
  2. 2026-09-02101
  3. 2026-09-0499
  4. 2026-09-0594
  5. 2026-09-0695
  6. 2026-09-0793
  7. 2026-09-0894
  8. 2026-09-1395
  9. 2026-09-15100
Users
-2 since 01.09
93-102 · 9 readings
  1. 2026-09-01102
  2. 2026-09-02101
  3. 2026-09-0499
  4. 2026-09-0594
  5. 2026-09-0695
  6. 2026-09-0793
  7. 2026-09-0894
  8. 2026-09-1395
  9. 2026-09-15100

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.

  • See the address and title of every tab you have open tabs
  • Add items to the right-click menu contextMenus
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

River publishes 6 listings we track, 8k users between them. Listed website: pnl.dev.

  1. Dictionariez: Your Dictionary, Your Language River · Productivity · Education · published 2020-01-06 6k users ★ 4.8
  2. Spotify on Chrome: A mini Spotify player River · Lifestyle · Entertainment · published 2021-01-19 1k users ★ 4.1
  3. PNL Reader: read quietly or read aloud River · Productivity · Tools · published 2025-02-27 285 users ★ 4.2
Show 2 more from this publisher
  1. Ordböcker - Dictionary & AI Translation for Swedish, Norwegian & Danish River · Productivity · Education · published 2025-06-10 83 users ★ 3.7
  2. SidePal: Your Language and AI Ally in Side Panel River · Productivity · Education · published 2024-08-06 37 users

Like this one

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

  1. Duosub — Dual Subtitles for YouTube Describes nearly the same job, smaller audience 24 users ★ 5.0
  2. CaptionPair Describes nearly the same job, smaller audience 4 users
  3. YouTube Subtitles + Describes nearly the same job, smaller audience 176 users
  4. DualSubtitle Describes nearly the same job, smaller audience 5 users
  5. Youtube Bilingual Subtitles Describes nearly the same job, with an established audience 20k users ★ 3.6

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.

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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.