A browser extension and mobile app that renders web pages, PDFs, video subtitles, meetings, images and manga in side-by-side bilingual form, routing text through more than 20 engines including ChatGPT, DeepL, Gemini and Claude on either built-in quota or your own API key.
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Used this tool? Rate it
Immersive Translate is a bilingual translation layer that sits inside your browser rather than a website you visit. Its defining idea is deceptively simple: instead of replacing a page with its translation and forcing you to choose between the original and the rendered version, it interleaves the two, placing the translated text directly beneath each paragraph of source text. The official description positions it as a free bilingual AI translation tool covering website translation, PDF translation with original layouts preserved, video subtitle translation for YouTube and Netflix, online meeting translation, image translation and comic translation, integrating over 20 leading translation engines including ChatGPT, DeepL, DeepSeek and Gemini across more than 100 language pairs.
The side-by-side arrangement is the product's actual innovation and the reason it earned its name. Anyone who has read technical documentation or academic papers in a second language knows the failure mode of conventional translation: machine output is fluent enough to follow but imprecise at exactly the moments precision matters, and once the original is gone you have no way to check. Keeping both visible turns the translation into a reading aid rather than a replacement, letting you skim in your stronger language and drop to the source whenever a term looks suspicious. The company describes having pioneered this vertical bilingual layout, framing it as improving readability while minimising disruption to the original content.
Two structural facts shape how the tool actually behaves and both deserve stating up front. First, this is a browser extension and mobile application, not a web service — it is distributed through Chrome, Edge, Firefox and Safari, as a userscript and zip, and as iOS and Android apps. Second, it is a router rather than a translation engine: it does not train its own translation models but dispatches text to third-party providers, some through built-in quota and others only after you supply your own API key. Understanding which providers fall on which side of that line is the single most useful thing to know before installing, and it is covered in detail below.
The extension itself is free to use and the company presents free access as a deliberate commitment rather than a trial. That said, the free tier is now shaped by explicit fair-use rules that are worth reading before planning around them: the company states it has introduced anti-abuse and fair-use principles under which free users still get high-quality translation but daily translation requests are subject to a reasonable limit, with a higher quota after registration. For premium engines such as DeepL, OpenAI and Claude, a substantial monthly token allowance is provided as an out-of-the-box professional experience, capped rather than unlimited.
Paid membership raises rate limits and unlocks the fuller feature set, and there is a free trial plan with usage limits relative to the regular plans. Three commercial details matter more than the headline price. First, the trial converts automatically: cancel before it expires or the account is charged. Second, the refund window is unusually narrow — monthly subscriptions can be refunded only within 24 hours of the initial purchase, processing takes seven to ten business days, and the company reserves the right to refuse repeat refunds to users who have received one before. Third, one account supports a bounded number of simultaneous devices, counted as browsers rather than machines. Separately from all of this, if you supply your own API key for a third-party engine, that provider bills you directly and those charges have nothing to do with the extension. Current prices and allowances should be confirmed on the official pricing page at the time of purchase.
The extension is free to use and the company frames free access as a lasting commitment. It is not unlimited, though: fair-use rules cap daily translation requests for free users, with a higher quota after registration, and the built-in allowance for premium engines such as DeepL, OpenAI and Claude is a monthly token cap. Paid membership raises the rate limits.
It depends entirely on the engine. Several providers, including DeepL, Tencent, Volcano Engine, Baidu, Youdao and Microsoft Translator, require you to supply the API key of the corresponding service before use. Others are available on the built-in allowance. When you use your own key, the provider bills you directly and the company states those fees have nothing to do with the extension — so watch each provider's free allowance to avoid unexpected charges.
Documents in PDF, ePub, HTML, TXT, DOCX, Markdown and subtitle formats, with OCR for scanned PDFs; video subtitles across more than 100 platforms; live meetings on Zoom, Google Meet and Teams; and images and comics via OCR with inpainting that preserves the original layout.
It is a browser extension and a mobile app, not a website. It is distributed for Chrome, Edge, Firefox and Mac Safari, as a userscript and zip, and as iOS and Android applications.
More than 20 machine translation services and large language models, including ChatGPT, DeepL, DeepSeek, Gemini and Claude. The company claims support for more AI translation engines than any other browser-based translation extension. Which one you pick materially affects both quality and cost.
That is the official claim — the tool delivers real-time bilingual subtitles across more than 100 platforms and states that it also translates videos without original subtitles. Quality on unsubtitled video depends on speech recognition as well as translation, so verify it on your own content before relying on it.
Chrome Web Store users rate it 3.9 out of 5 across roughly 2,900 ratings. That is a substantial sample and a middling score — respectable for a tool with this feature breadth, but below several narrower alternatives in the same store. Treat the store rating as more reliable than blog recommendations, some of which may earn affiliate commission.
The company states it retains no translated content, never uses results to train AI models, and encrypts requests end to end; the Chrome Web Store's reviewed disclosure adds that the developer collects no user data. Bear in mind that your text still reaches whichever third-party engine you select, and that provider's own policies apply to it.
The window is narrow. Monthly subscriptions can be refunded within 24 hours of the initial purchase, requests take seven to ten business days to process, and the company reserves the right to refuse repeat refunds. The free trial also converts to a paid charge automatically if not cancelled before it expires.
Up to a limit. One account supports a bounded number of simultaneous devices, and the company clarifies that a device here means a browser rather than a machine. Exceeding the limit automatically logs out whichever session signed in first.
