EasySubs Firefox

EasySubs

By: Nitrino
Learn languages by watching films and series. Customizable subtitles and a popup dictionary to master your vocabulary while watching YouTube or Netflix. Open-source and free.

Features & Capabilities

EasySubs is a free, open-source Chrome extension designed to enhance your language learning experience through films and series. It allows you to watch videos on platforms like YouTube, Netflix, and Coursera with customizable subtitles. Hover or click on words in subtitles to get immediate translations, and the video pauses automatically to help you focus. You can also translate entire phrases, improve pronunciation, and export vocabulary to popular language learning services like Anki.

The extension supports uploading your own subtitle files, offers manual sync for subtitles out of sync, and provides subtitle navigation features like rewind and fast-forward by subtitle sentences. EasySubs unlocks access to all subtitles and audio tracks on Netflix, bypassing regional restrictions. It’s an ideal tool for learners wanting an immersive and interactive way to master languages using their favorite shows and movies.

User Growth & Download Statistics

Manifest V3 Add-on Education Entertainment
By:
Nitrino
Daily users:
201 7
Rating:
3.88
(16)
Version:
3.1.2 Last updated: 2026-01-10
Version code:
6094483
Creation date:
2020-06-03
Risk:
Very high risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • https://translate.google.com/*
  • http://localhost:8765/*
  • https://api.lingualeo.com/*
  • https://api-free.deepl.com/*
  • https://api.deepl.com/*
  • https://www2.deepl.com/*
  • https://www.bing.com/*
  • https://api-edge.cognitive.microsofttranslator.com/*
  • https://translate.yandex.net/*
  • https://api.openai.com/*
Content scripts matches:
  • www.netflix.com
  • www.youtube.com
  • www.coursera.org
  • kinopub.net
  • kino.pub
  • kinopub.cc
  • app.plex.tv
  • plex.ukrapka.tech
  • www.udemy.com
  • hd.kinopoisk.ru
  • See more
Size:
475.77KB
Email:
ni*****@gmail.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-16
Compare stats and ranking:

Other platforms

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:
Nitrino
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/easysubs/
Email:
ni*****@gmail.com
Website:
https://easysubs.cc

Permission Change History

2025-07-31: Version 3.0.3 → 3.1.0
Add Host permissions: https://api-free.deepl.com/* https://api.deepl.com/* https://www2.deepl.com/* https://www.bing.com/* https://api-edge.cognitive.microsofttranslator.com/* https://translate.yandex.net/* https://api.openai.com/*
2024-08-20: Version 1.5.5 → 3.0.3
Add Host permissions: https://translate.google.com/* http://localhost:8765/* https://api.lingualeo.com/*
Add Optional host permissions: *://*/*
Add Permissions: scripting activeTab
Remove Permissions: <all_urls>

User Reviews

Спасибо за удобное и полезное расширение! Очень помогает в изучении иностранных языков, плюс ко всему лимит только в токенах от сервиса переводов, а не от вас. Единственным улучшением, которое было бы хорошо сделать, это добавить хотя бы пару различных шрифтов и расцветки для текста субтитров, а также добавить возможность сохранять порядок появления субтитров без накладки одной части на другую, когда они сливаются и бывает сложно проследить где появится следующая строчка. Несмотря на мелочи, расширение на 5/5 ⭐
by Mo*****, 2025-10-13

doesn't work on Firefox. Thank you for your reply. I tried a number of add-ons, so I don't remember exactly, but as I watched your instruction video, I recollect that the problem was, that the ES icon simply didn't show up on the youtube menu bar at the bottom, as you show in the video. I would be happy to install it back again and test it, however, I finally got one (of about ten I tried) to work, so I just don't want to uninstall it, next time I install it, it may not work again. If the one I use right now stops working I can try to test your again. The 1 star I gave you maybe unfair, if you say that you tried it and it worked. I seen an option to delete the rating, I can do it, if you wish. Martin
by Ma*****, 2025-09-06

A great addon with a lot of features that others don't have and is very user-friendly.
by iG*****, 2024-09-18
View all user reviews ›

Is EasySubs 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.

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

Risk impact analysis details
  • Critical Request access to the following domains: netflix.com, youtube.com, coursera.org, kinopub.net, kino.pub, kinopub.cc, plex.tv, ukrapka.tech, udemy.com, kinopoisk.ru, amazon.de, primevideo.com, inoriginal.online, google.com, localhost, lingualeo.com, deepl.com, bing.com, microsofttranslator.com, yandex.net, openai.com
  • 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.

EasySubs is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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