Captionz - YouTube Dual Subtitles & A-B Repeat
Chrome extension by River · Productivity · Education
- Established publisher
A Chrome extension in Productivity · Education with 114 users, barely installed. Audience over the last 30 days: +8.
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
- 114
- Users, last 30 days
- +8
- Version
- 1.2.1
- Updated in the store
- 2026-10-12
- Published
- 2026-01-14
- Manifest
- V3
- Browser access
- 3 permissions
How it has moved
- 2026-10-04104
- 2026-10-08107
- 2026-10-09106
- 2026-10-11109
- 2026-10-13107released 1.2.1
- 2026-10-16106
- 2026-10-17108
- 2026-10-18111
- 2026-10-19113
- 2026-10-20116
- 2026-10-21119
- 2026-10-22113
- 2026-10-24110
- 2026-10-25111
- 2026-10-28110
- 2026-10-29109
- 2026-10-30114
- 2026-11-01114
- 2026-09-01102
- 2026-09-02101
- 2026-09-0499
- 2026-09-0594
- 2026-09-0695
- 2026-09-0793
- 2026-09-0894
- 2026-09-1395
- 2026-09-15100
- 2026-09-1699
- 2026-09-20101
- 2026-09-21106
- 2026-09-25105
- 2026-09-26106
- 2026-10-04104
- 2026-10-08107
- 2026-10-09106
- 2026-10-11109
- 2026-10-13107released 1.2.1
- 2026-10-16106
- 2026-10-17108
- 2026-10-18111
- 2026-10-19113
- 2026-10-20116
- 2026-10-21119
- 2026-10-22113
- 2026-10-24110
- 2026-10-25111
- 2026-10-28110
- 2026-10-29109
- 2026-10-30114
- 2026-11-01114
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.
-
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
Version history
- Version 1.2.1
What changed recently
- Package size changed
- Released version 1.2.1 (was 1.2.0)
The publisher
River publishes 6 listings we track, 8k users between them. Listed website: pnl.dev.
-
Dictionariez: Your Dictionary, Your Language 6k users
-
Spotify on Chrome: A mini Spotify player 1k users
-
PNL Reader: read quietly or read aloud 489 users
Show 2 more from this publisher
Like this one
Listings the catalog judges closest in what they say they do.
-
Duosub — Dual Subtitles for YouTube 34 users
-
CaptionPair 4 users
-
YouTube Subtitles + 221 users
-
Dual Subtitle for YouTube 1k users
-
DualSubtitle 6 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.
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The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/epmnpaienfgfkbbjeccpdcfajcppiphj)<a href="https://extops.dev/extensions/epmnpaienfgfkbbjeccpdcfajcppiphj"><img src="https://extops.dev/extensions/epmnpaienfgfkbbjeccpdcfajcppiphj/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 2026-10-30. We publish no contact details for extension developers.