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SubFlex - Smart Subtitle Controller & Sync

Chrome extension by ExtensionFlex · Productivity · Tools

A Chrome extension in Productivity · Tools with 20 users, barely installed. Audience over the last 30 days: +12.

Specific sites only: 6 match patterns.

What the developer says, and 4 screenshots

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

Users
20
Rating
not rated yet
Users, last 30 days
+12
Version
1.3.0
Updated in the store
2026-10-25
Published
2026-09-12
Manifest
V3
Browser access
3 permissions, 6 site patterns

How it has moved

Users
+12 since 02.10
7-23 · 14 readings
2026-10-25: released 1.3.0
  1. 2026-10-047
  2. 2026-10-0811
  3. 2026-10-0912
  4. 2026-10-1314
  5. 2026-10-1616
  6. 2026-10-1717
  7. 2026-10-2118
  8. 2026-10-2316
  9. 2026-10-2419
  10. 2026-10-2521released 1.3.0
  11. 2026-10-2623
  12. 2026-10-2822
  13. 2026-10-3023
  14. 2026-11-0120
Users
+20 since 13.09
0-23 · 21 readings
2026-09-13: appeared in the store2026-09-14: released 1.1.02026-09-22: released 1.2.02026-10-25: released 1.3.0
  1. 2026-09-130appeared in the store
  2. 2026-09-152
  3. 2026-09-173
  4. 2026-09-209
  5. 2026-09-228released 1.2.0
  6. 2026-09-279
  7. 2026-09-288
  8. 2026-10-047
  9. 2026-10-0811
  10. 2026-10-0912
  11. 2026-10-1314
  12. 2026-10-1616
  13. 2026-10-1717
  14. 2026-10-2118
  15. 2026-10-2316
  16. 2026-10-2419
  17. 2026-10-2521released 1.3.0
  18. 2026-10-2623
  19. 2026-10-2822
  20. 2026-10-3023
  21. 2026-11-0120

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: 6 match patterns.

  • https://api.opensubtitles.com/*
  • https://www.subtitlecat.com/*
  • https://translate.googleapis.com/*
Show the remaining 3
  • https://en.wikipedia.org/*
  • https://raw.githubusercontent.com/*
  • https://github.com/*
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.3.0 · Asked for more permissions (9, was 6) (changed: site access)
  2. Version 1.2.0 · Asked for more permissions (6, was 5)
  3. Version 1.1.0

What changed recently

  1. Package size changed
  2. Asked for more permissions (9, was 6) (changed: site access)
  3. Store description rewritten
Show the remaining 8
  1. Released version 1.3.0 (was 1.2.0)
  2. Package size changed
  3. Asked for more permissions (6, was 5)
  4. Store description rewritten
  5. Released version 1.2.0 (was 1.1.0)
  6. Package size changed
  7. Released version 1.1.0 (was 1.0.0)
  8. Appeared in the store

The publisher

ExtensionFlex.

Like this one

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

  1. SubMaker xSync Describes nearly the same job, smaller audience 264 users
  2. Subtitle Overlay: Add Subtitles to Any Video Describes nearly the same job, smaller audience 4k users ★ 4.5
  3. SubSync Describes nearly the same job, smaller audience 1 user
  4. SubLoader Describes nearly the same job, smaller audience 43 users
  5. SubStream: Add Subtitles to Videos Describes nearly the same job, smaller audience 1k users ★ 4.5

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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Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/candbaifnimcdpfaibgjcebimiafcjil/badge.svg)](https://extops.dev/extensions/candbaifnimcdpfaibgjcebimiafcjil)

HTML

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