Load subtitle to a HTML5 video.

  • +Sub
  • +Sub
  • +Sub
  • +Sub
  • +Sub
What is +Sub?
+Sub is a Chrome extension that brings convenience in adding subtitles to your HTML5 videos. This tool, effective on various video platforms like Amazon Video, Netflix, and Youtube, allows for searching and selecting desired subtitles. It supports the use of the built-in search powered by TMDB and opensubtitles, as well as using local subtitle files. It also offers features to adjust the subtitle's offset time and to view a transcript from the given subtitle. +Sub supports multiple subtitle formats and iframe videos too.
Users: 10,000+
Rating: 3.83 (112)
Version: 6.5.2 (Last updated: 2023-10-03)
Creation date: 2018-11-13
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
  • webNavigation
  • scripting
  • storage
  • activeTab
Host permissions:
  • https://*/
Size: 755.71K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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Load subtitle into any video.

Add a subtitle, with a few clicks, to the current video.

By using +Sub, you can search and select your desired subtitle which will be displayed on the video.

This plugin supports Amazon Video, Netflix, Youtube and many more.

You can either way to use the built-in search (powered by tmdb and opensubtitles), to search your desired movie in the desired language or you can simply use your local subtitle files.

+Sub has the capability to synchronize the subtitle with the given video. You can simply adjust the offset time in the +Sub dialog, which will directly applied to the subtitle.

+Sub has can show the transcript from the given subtitle, which is even copyable with shift+left-click.

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works well on various video platforms
  • Responsive and active developers
  • Can search for and load external subtitle files
  • Supports multiple languages
  • Ability to move captions
  • Requires access to web history
  • Subtitles not appearing for some languages
  • Search bar returning unrelated subtitles
  • Short drag bar
  • Doesn't work on Mozilla Firefox
Most mentioned
  • Doesn't work on Mozilla Firefox
  • Subtitles not appearing
  • Access to web history
  • Responsive and active developers
  • Ability to load external subtitle files
Recent reviews
Doesn't work, exactly as someone else said, I can click on an episode of a show to add the subtitles but they don't show. Nothing for the "next 3 lines" either and they are all 00:01 long. I've tried it specifically with Fullmetal Alchemist Brotherhood, episode 1, on 9anime.

faydalı çalışıyor
by ERCAN ERCAN, 2024-03-30

have literally no idea how to use it, it just doesn't pop up, the sub just won't show up, don't even know how to open the sub, even if i import the sub file, even the video is in html5
by G G, 2020-04-13
View all user reviews
Risk impact

+Sub may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.

Risk likelihood

+Sub has earned a good reputation and can be trusted.

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Promo images
+Sub small promo image
Small promo image
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