A desktop browser extension · Works on YouTube
Tarjuman saves YouTube’s subtitles to a file in their own language. You translate that file with the model you choose, into the language you want. Tarjuman then shows your translation over the same video, where you can adjust its timing and edit it.
How it works
Tarjuman doesn’t translate anything itself and doesn’t connect to any model. It prepares the file and the instructions for you, and shows what you bring back.
Open a YouTube video and choose the subtitle language from the CC button in the player. Then download its file with Tarjuman’s button on the player bar.
Open the Tarjuman popup from the browser toolbar. “From” is filled in with the file’s language as YouTube sent it. Choose “To”, then press “Copy instructions”. Since version 2.1.1, they’re copied in the extension’s interface language.
Send the file and the instructions to the AI model you choose. Tarjuman doesn’t connect to any model, so the choice is yours.
Upload the translated file and your translation appears over the video. It’s saved for whenever you come back.
Features
Edit text and timing, merge and split segments, search and replace, and mark what you want to come back to. It also prepares a file with the missing segments so you can complete them with your model.
When you upload your file, Tarjuman compares it with the original you downloaded: what’s missing, what’s extra, where the timing has drifted, and what’s left untranslated. It never changes anything in your file silently.
Tarjuman accepts every subtitle track YouTube offers for the video, manual or auto-generated, YouTube’s auto-translation labeled with its source language, and any SRT file in any language. YouTube alone decides which languages each video has: Tarjuman doesn’t create a track YouTube doesn’t offer, and doesn’t switch tracks for you, so you pick one yourself from YouTube’s menu.
Your translation appears in the text direction of its language, on its own or over the original. It works in default view, theater mode and fullscreen, and hides during ads.
The − and + buttons on the player bar move the translation earlier or later, and “Sync by sentence…” sets it from a sentence you hear. Timing is saved with each translation.
Every video you’ve translated, with up to three translations per video, the two languages of each translation, and a previous version of what you replaced. Plus export, and a backup you can move to another browser.
A panel beside the video shows the whole translation with the current segment highlighted, so you can read what came before and what’s coming. It stays closed until you open it from its button.
Try it here
Display mode, font, size, background and position, all from Settings. The fonts are bundled with the extension, and any characters they don’t include are drawn with your device’s fonts. The extension’s interface is in Arabic or English, which you choose in the same Settings.
A demo of the options in Settings › Display.
Your data
On your device
Your translations and settings are in the extension’s storage in your browser. No server keeps them, and nothing is synced.
To YouTube
Video thumbnails in “Library” are requested from YouTube’s servers using the video ID. A switch turns them off, and in Firefox they’re requested only with your consent.
To the model you choose
What you send it yourself: the file and the instructions. The extension doesn’t connect to it.
To the reports channel
A problem report, when you write it, see everything in it, and press “Send report”. No translation text or video ID is attached automatically.
Nothing else
No usage tracking, no ads, and no selling of your data.
Browsers
Tarjuman is published on Chrome Web Store, which Brave also installs from, and on Microsoft Edge Add-ons. It isn’t published on Firefox Add-ons yet; once it is, you’ll find the link here.
From Chrome Web Store, version 130 or later
Status: Available
From Chrome Web Store, on Chromium 130 or later
Status: Available
From Microsoft Edge Add-ons, version 130 or later
Status: Available
From Firefox Add-ons, version 144 or later
Status: Coming soon
Install
In Chrome and Brave, from its Chrome Web Store page. In Edge, from its Microsoft Edge Add-ons page. Coming soon to Firefox Add-ons.
Click the extensions icon (the puzzle piece), then the pin next to “Tarjuman”. That’s where you’ll copy the translation instructions.
Then start with First use on the Help page.
Permissions on install: Storage, downloads, and access to www.youtube.com pages only. A fourth, optional permission is requested only when you send a report. In Firefox there are two optional consents: one for reports, which Firefox shows in the install dialog for you to turn on or off, and one for Library thumbnails, when you turn them on. Details are under Permissions.
Your translation over the video, from any language to yours