Free / Open-sourceAI sidebar and browser agent for reading, writing and research
Free / Open-sourceAI sidebar and browser agent for reading, writing and research
BrowserTranslate records 0 monthly visits with — month-over-month growth and Paid pricing. InterSub records 71,644 monthly visits with -11.2% growth and Freemium, Free Trial pricing.

AI-powered language breakdowns for any text you highlight on the web
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | intersub.cc |
| Pricing Model | Paid | Freemium, Free Trial |
| Monthly Visits | 0 (0) | 71.64K (71,644) |
| MoM Traffic Delta | 0 (—) | -9.04K (-11.2%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (15.2%) |
| Direct Visits / mo | 0 | 31.96K |
| User Rating | 4.2 | 4.2 |
| Supported Platforms | Browser Extension | Website |

AI-powered language breakdowns for any text you highlight on the web
Select any passage on a page, click the translate button that appears, and read an AI explanation in an overlay without navigating away.
Every request returns translations, vocabulary, romanization for non-Latin scripts, plus grammar, syntax and formality breakdowns.
Covers major world languages and closely related variants, including multiple Chinese and Arabic dialects, Spanish, Italian, Russian, Japanese and Farsi.
Connects to your own OpenAI account, so you control the model and are billed directly by OpenAI for what you use.
Learn languages with dual subtitles and a hover dictionary in any video
Watch with the subtitle of the language you are learning and your native language stacked, one line above the other, directly inside the video player.
Hover any subtitle word and the video pauses while a pop-up shows an AI-generated definition plus a translation of the surrounding context.
Every word you look up lands in your Wordbook with its original context, so you build a personal list from scenes you actually watched.
If an episode has no subtitles in your language, InterSub translates them on the fly with AI and shows the translation as the second line.
Free / Open-sourceAI sidebar and browser agent for reading, writing and research
Free / Open-sourceAI sidebar and browser agent for reading, writing and research

Bilingual AI translation for websites, documents, video and images
Bilingual AI translation for websites, documents, video and images
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
Free / Open-sourceAI bilingual translator for web pages, PDFs, and images
Free / Open-sourceAI bilingual translator for web pages, PDFs, and images
Free / Open-sourceFree bilingual browser extension that translates any page with the AI engine you choose
Free / Open-sourceFree bilingual browser extension that translates any page with the AI engine you choose
AI dubbing and bilingual subtitles for any YouTube video
AI dubbing and bilingual subtitles for any YouTube video

Browser translation, dictionary, and AI writing assistant
Browser translation, dictionary, and AI writing assistant
Free / Open-sourceTurn any webpage into bilingual reading in one click
Free / Open-sourceTurn any webpage into bilingual reading in one click
Bilingual subtitles and translated pages wherever you read or watch
Bilingual subtitles and translated pages wherever you read or watch
Learn a language from the videos you already watch
Learn a language from the videos you already watch
AI language learning built into every page you read
AI language learning built into every page you read