Is there a mobile version of InterSub?

Currently, InterSub is a browser extension for desktop use on Google Chrome, Microsoft Edge, and Firefox. However, we offer a Remote Control feature for looking up words from your mobile device during playback, as well as mobile apps and Telegram bots for memorization and practice as part of our full-cycle learning approach. Scan QR code in a pop-up on the video to start using the Remote Control feature. Or install one of the apps or bots following the instructions on this page to start memorizing words from your vocabulary.

How much does InterSub cost?

We offer flexible pricing options, including a Pay-as-you-go plan for casual learners. Please visit our pricing page for detailed information on our current plans and offers.

Can I use InterSub offline?

InterSub requires an internet connection to function properly, as it provides real-time translations and subtitle synchronization.

How does InterSub's AI-powered phrase translation work?

Our AI-powered phrase detection and translations recognize English phrasal verbs, idioms, and compound nouns in the subtitles of videos you watch.

Is my learning data saved and accessible?

Yes, InterSub saves your learning progress and encountered vocabulary. You can review this data to reinforce your learning. InterSub saves all the words you looked up while watching videos in the InterSub Dashboard (your wordbook). To have access to InterSub Dashboard – click “Dashboard” in the plugin settings, then click "Words" in the side menu.

How do I install InterSub?

InterSub can be easily installed as a browser extension. Simply visit our website and follow the installation instructions for your specific browser. If you are on the InterSub page in your browser's app or extensions marketplace, click the "Install" button, usually located in the top-right corner.

Which browsers are compatible with InterSub?

InterSub is compatible with major browsers including Google Chrome, Microsoft Edge, and Firefox. Check our compatibility page for the most up-to-date information.

Can I customize the appearance of the subtitles?

Yes, InterSub offers various customization options. You can adjust the size, position, and even toggle shadowing (pause after each subtitle) for the subtitles using our hotkeys. You can also choose your subtitle background to be “wide” or “narrow”.

How does InterSub differ from other language learning tools?

InterSub stands out with its simplicity, multi-platform integration, and full-cycle learning approach. It's designed to seamlessly integrate into your existing entertainment and learning habits.

Is there a trial period for InterSub?

Yes, we offer a free trial period so you can experience the benefits of InterSub before committing to a subscription. Check our website for current trial offers.

How often is InterSub updated?

We regularly update InterSub to improve performance, add new features, and expand platform compatibility. You can find our latest updates on our blog or changelog.

Can I use InterSub for content in my native language?

While InterSub is primarily designed for language learning, you can use it to add subtitles in other languages to content in your native language, which can be useful for learning new vocabulary or improving reading skills in other languages.

How to use hotkeys with InterSub?

Rewind / Fast forward with ← and →, and pause with Space key. Resize main subtitles with = / - and secondary subtitles with Shift + = / -. Adjust subtitle position with the ↑ and ↓ keys. Toggle shadowing with the S key. Turn InterSub on/off using the I key.

What is a Remote Control mobile app?

Remote control – the ability to control video playback and look up words in subtitles using any smartphone, without needing a computer. When paused, the subtitle and the translation of the selected unfamiliar word will be displayed. After closing the translation window, playback will automatically resume. Scan the QR code over the video to launch Remote Control for the video you are watching!

How do I update the InterSub plugin to the latest version?

To update the plugin, quit your browser application and restart it. We support Google Chrome, Microsoft Edge, and Firefox.

Last updated: March 24, 2026

Intersub

Name: Intersub
Rating: 5 (405 reviews)
Author: TopAITools

Get deal

5.00 Comments405 Saved

Introduction:

Interactive Dual Subtitles for Effortless Language Learning - InterSub

Launch Date:

March 6, 2022

Social links:

Monthly Visits:

64.1K

Website

🙋‍♂️Personal💼Work

AI Language Learning145

Update this tool

Gptalk Ai Talk Expert

‎GPTalk - AI Talk Expert on the App Store

Zaplingo

Zaplingo Talk - Learn a language by speaking with AI tutors

Langs Ai Language Learning

‎Langs: AI Language Learning on the App Store

Workbookpdf

WorkbookPDF: Personalized Language Workbooks with AI

Alt Cortex Ai For The Lifelong Learner

Alt Cortex

Intersub Overview

What is InterSub?

InterSub is an innovative browser extension designed to enhance language learning through interactive dual subtitles and instant word translations. It allows users to watch videos on popular streaming platforms like YouTube, Netflix, and TED with subtitles in both their native and target languages. This tool is perfect for anyone looking to improve their language skills effortlessly while enjoying their favorite content.

How to use InterSub?

Install the InterSub browser extension from the official website or your browser's extension store. 2. Open a video on supported platforms like YouTube or Netflix. 3. Enable the InterSub extension to activate dual subtitles in your native and target languages. 4. Hover over any word in the subtitles to see an instant translation and definition. 5. Save new words to your personal wordbook for future reference.

What are the main features of InterSub?

AI-assisted Dual Subtitles: Watch videos with subtitles in both your target language and native language side-by-side.
Instant Translations: Get immediate translations by hovering over any word in the subtitles.
Personal Wordbook: Automatically save all translated words to your personal vocabulary list for easy review.
Multi-Platform Support: Compatible with YouTube, Netflix, Prime Video, TED, Coursera, Udemy, and more.
Collocation Detection: Advanced AI recognizes phrasal verbs and idioms to enhance understanding.

Who is InterSub for?

InterSub is tailored for language learners of all levels, from beginners to advanced users. It is particularly beneficial for those who enjoy watching videos in their target language, as it provides a seamless way to learn vocabulary and phrases in context. Whether you are a student, a professional looking to improve language skills, or a casual learner, InterSub offers a practical solution to enhance your language acquisition.

What are the use cases of InterSub?

Watching Movies and TV Shows: Enhance your understanding of dialogue in films and series by using dual subtitles.
Online Courses: Utilize InterSub while taking courses on platforms like Coursera or Udemy to grasp complex terminology and concepts.
Language Practice: Regularly watch content in your target language to reinforce learning and improve listening skills.

Product Images

1 / 4

Intersub Pros and Cons

Pros

Multi-Platform Support: InterSub works on popular platforms like YouTube, Netflix, Prime Video, and more, allowing users to learn languages while watching their favorite shows.
AI-Assisted Dual Subtitles: The AI-powered feature provides dual subtitles in the user's native and target languages, enhancing comprehension.
Instant Translations: Users can hover over words in subtitles for instant definitions and context translations, making it easier to learn on the go.
Personal Wordbook: All translated words are saved in a personal vocabulary list for easy review and reinforcement of learning.
Free Trial Available: InterSub offers a free trial period for users to experience the benefits before committing to a subscription.

Cons

Limited Browser Compatibility: Currently, InterSub is only available as a browser extension for Chrome, Edge, and Firefox, which may limit accessibility for some users.
Requires Internet Connection: InterSub depends on an internet connection to function effectively, limiting offline usage.

Analytics of Intersub

Intersub Website Traffic Analysis

Visits Over Time

Oct 2025 - Dec 2025 All Traffic

#817

AI Tools Rank

64.11K

Monthly Visits

42.39%

Bounce Rate

2.13

Pages Per Visit

1:05

Visit Duration

528.38K

Global Rank

676.84K

Country Rank

Top Keywords

Keyword	Volume	CPC	Estimated Value
chrome extension for youtube subtitles for language learning	0	$0.00	$190.00
dual subtitles	2.03K	$2.67	$320.00
intersub	630	$0.00	$430.00
двойные субтитры	280	$0.00	$160.00
double subtitles extension	220	$0.00	$150.00

Intersub Compare

Tool Name	Introduction	Pricing	Type	Launch Date	Learn more
Dora Ai Alpha	Visually design, customize and ship responsive 3D animated websites without writing a line of code - SEO friendly, far more efficient, easy to get started, and free to try.	Paid	--	--	Learn more
I10x	i10x is an all-in-one AI platform for chatting, creating, and analyzing with 500+ tools.	Paid	--	--	Learn more
Anytourl	Easily upload files and get instant shareable links.	Paid	--	--	Learn more

Info current as of post date. Offers and availability may vary by location and are subject to change.

Intersub Comments (0)

Your rating

0/2000

No comments yet

Be the first to share your thoughts!

Intersub Prompts (0)

Prompts And Results

Add your own prompts and outputs to help others understand how to use this AI.

Intersub Q&A

InterSub is a browser extension for Google Chrome, Microsoft Edge and Firefox designed for language learning and skill acquisition. It offers interactive dual subtitles and instant word translations on popular streaming and educational platforms like YouTube, Netflix, Prime Video, Udemy, Coursera, LinkedIn Learning, and TED.

InterSub integrates with your browser and provides real-time dual subtitles (in your native and target languages) while you watch videos. It also offers instant translations when you hover over unfamiliar words, enhancing your learning experience. InterSub saves all the words you looked up while watching videos in your InterSub Dashboard. To have access to InterSub Dashboard – click “Dashboard” in the plugin settings.

InterSub currently supports YouTube, Netflix, Udemy, Coursera, LinkedIn Learning, TED, and Prime Video. We're continuously working to add more platforms to our list.

Yes, InterSub is designed for learners at all levels, including beginners. The dual subtitle feature and instant translations make it easier for newcomers to understand content in their target language.

Absolutely! InterSub supports a wide range of languages. You can switch between different target languages depending on what you're learning. To set “Translate from” and “Translate to” options go to InterSub plugin settings in your browser.

For more FAQs, please visit this link: https://intersub.cc/en/faq?noRedirect=true