Follow Japanese meetings, lectures, and streams in English as they happen—right in your Chrome tab.
When you're joining a sprint planning call with your development team in Osaka, attending a Toyota Production System training webinar, watching a VTuber livestream on YouTube, or sitting in on a regulatory briefing about Japan's Pharmaceutical and Medical Device Act, you need to understand what's being said before the topic-marker particles and verb endings have fully resolved the sentence structure. Translext transcribes Japanese audio playing in your Chrome tab and generates English captions with optional spoken translation, running entirely in the browser.
No meeting bots to invite. No uploads, no recordings kept after you close the tab. Japanese moves through topic-comment structure and drops subjects constantly; English needs explicit subjects and earlier clarity about who's doing what. Translext handles the audio in real time, rendering comprehensible English while a Japanese speaker is still building context through wa, ga, and verb-final clauses that won't reveal tense or negation until the last morpheme arrives.
Japanese marks topics with wa and subjects with ga, then drops both whenever context allows. A sentence can open with a time expression, slide into a topic marked by wa, mention an object with wo, and only at the end deliver a verb phrase that tells you whether anything was completed, negated, or left polite-but-vague. English needs to know who's doing what much earlier in the sentence. Translext begins rendering as soon as it has enough phonetic input to identify particles and case markers, building provisional English phrases and revising them when the verb phrase arrives. You'll see captions update in real time as the system narrows down whether the speaker is requesting, reporting, refusing, or speculating. It's not perfect—live translation of any language pair makes mistakes—but it gives you comprehensible English without waiting for the Japanese sentence to fully close.
Japanese has thousands of homophones: kōsō can mean structure, concept, dispute, or high-rise depending on which kanji you write. In live speech there's no written form to disambiguate, so Translext relies on surrounding context and frequency models. Company names, product codes, and technical terms borrowed from English—often rendered in katakana—add another layer. When a speaker in a Mitsubishi Electric compliance meeting says エネルギーマネジメント (enerugī manejimento) or references a specific 事業部 (jigyōbu, business division) by name, the system translates the structure but may leave the proper noun in romaji or pass it through as the English loanword it originally was. You'll see the English captions reflect what's intelligible; if the meaning is ambiguous in the audio itself, the captions won't pretend otherwise.
Japanese layers politeness through verb endings (masu, desu), humble forms (itasu, mousu), and honorific forms (nasaru, ossharu). The same request can be phrased a dozen ways depending on relative status, in-group versus out-group distance, and how much deference the speaker wants to signal. English has far less grammatical formality: we adjust tone with word choice and modal verbs, but we don't conjugate differently when speaking to a manager versus a peer. Translext renders the semantic content in English but doesn't try to invent a politeness layer that doesn't exist in the target language. If you're watching a Japanese executive use sonkeigo (respectful language) to address a client, you'll get clear English sentences that convey the meaning; the capsule of social distance encoded in the verb forms will be flattened, because English simply doesn't mark it the same way. You're reading for comprehension, not for a map of every social nuance the grammar is performing.
Translext is trained primarily on standard Tokyo Japanese, so strong regional dialects—Kansai-ben's distinctive intonation and copula, Kyushu pitch patterns, or Tōhoku vowel reduction—will reduce transcription accuracy. Speakers who code-switch between dialect and standard Japanese during the same meeting will be easier to follow. If you're joining a call with team members in Fukuoka or Sendai who use regional features heavily, expect the captions to be less reliable than they would be with standard hyōjungo. The system will still attempt transcription, but it may misparse particles or verb endings when phonetics diverge significantly from the training data.
Yes, as long as the audio is playing in a Chrome browser tab. Translext captures the tab's audio, so it works with live video calls in Google Meet or Zoom's web client, recorded courses on Udemy or Coursera, YouTube videos and livestreams, and Twitch streams. It does not work with the Zoom desktop app, a mobile YouTube app, or audio playing outside the browser. Once you activate the extension in a tab, it transcribes and translates the Japanese audio in real time, showing captions overlaid in the browser window. No bots join your meeting, and nothing is uploaded or stored after you close the tab.
Japanese borrows extensively from English—マネージャー (manējā, manager), スケジュール (sukejūru, schedule), プロジェクト (purojekuto, project)—and pronunciations are adapted to Japanese phonotactics. Translext transcribes these as katakana loanwords, recognizes them as English-origin terms, and usually renders them back into English in the captions. Sometimes the system will pass them through in romaji if the loanword is ambiguous or has shifted meaning in Japanese. You'll see the English word you expect most of the time, but the captions reflect what was actually said, not a cleaned-up version pretending the borrowing didn't happen.
Conversational Japanese among native speakers averages around seven to eight moras per second, faster than English's typical syllable rate, and speakers often drop particles, clip verb endings, and run phrases together. Translext transcribes in real time, so it will keep up with normal meeting pace, but rapid-fire cross-talk, multiple speakers overlapping, or someone racing through bullet points on a slide will degrade accuracy. Slower, clearly articulated speech—common in formal presentations or training sessions—produces better transcriptions and more reliable English captions. The system does not separate speakers or label who said what; it transcribes the mixed audio stream as a continuous flow.
Translext generates captions in near real time, typically with one to three seconds of latency depending on your machine and how much processing the tab is doing. Japanese verb-final syntax means the system sometimes needs to wait for the end of a clause before it can produce a confident English rendering, so you may see captions appear in short bursts rather than word-by-word. If a speaker pauses mid-sentence or uses a lot of embedded clauses, the English caption may lag slightly while the system waits for enough context to resolve ambiguity. You'll be following the conversation closely, not reading a polished transcript ten seconds after the fact, but you won't have perfect simultaneity either. Live translation always involves trade-offs between speed and accuracy.
Live captions and translated audio for anything playing in your browser tab. No bots to invite, nothing to upload.