SubText Firefox

SubText

By: SubText Add-on
Watch videos with dual-language subtitles. Get AI translations, hover over a word for a translation, click for deeper word/phrase breakdowns, and save vocabulary to review later. Works on YouTube, Netflix, Disney+, Prime Video, Hulu, Viki, and Udemy.

Features & Capabilities

Turn anything you watch into language practice.

SubText shows two subtitle lines at once — the original and a translation — so you can follow along and pick up a language naturally while watching the shows you already love.

What you get:

  • Dual subtitles — original + translation, synced to playback.
  • Three translation modes — context-aware AI translations, fast machine translation, or the site's own caption track.
  • Hover a word for an instant meaning, without pausing.
  • Click a word or phrase for a deeper breakdown: definition, part of speech, example sentences, and word forms.
  • Expression highlights — idioms and set phrases are flagged so you notice them.
  • Follow-along — words light up as they're spoken.
  • Save to your library — keep words and phrases and review them later with flashcards, quizzes, and study sets on subtext.site.
  • Make it yours — fonts, colors, sizing, position, keyboard shortcuts, and separate settings per site.

Supported sites: YouTube, Netflix, Disney+, Prime Video, Hulu, Viki, and Udemy.

Free to use: machine-translated dual subtitles, word hover, and lookups work without an account. A SubText subscription unlocks higher-quality AI translations and saving to your personal library.

User Growth & Download Statistics

Manifest V3 Add-on
By:
SubText
Daily users:
2 1
Rating:
5.00
(1)
Version:
1.1.5 Last updated: 2026-07-13
Version code:
6352034
Creation date:
2026-06-21
Risk:
Very high risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • *.svtplay.se
  • *.svt.se
  • *.youtube.com
  • youtube.com
  • *.udemy.com
  • *.netflix.com
  • *.disneyplus.com
  • *.primevideo.com
  • *.amazon.com
  • *.amazon.co.uk
  • See more
Size:
518.86KB
Email:
su*****@gmail.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-14
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
SubText
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/subtext/
Email:
su*****@gmail.com
Website:
https://subtext.site

Is SubText Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

SubText requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

SubText is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Good **** ********* *** **** **** *******
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