OpenSubs

AI Subtitle Generator

what is OpenSubs

OpenSubs is a free AI subtitle generator for video creators, providing private and secure transcription, translation, and styling capabilities entirely in the

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OpenSubs's overview

OpenSubs is a free AI subtitle generator designed for video creators who need to transcribe, translate, and style their videos without uploading them to a server. The tool runs entirely in the browser, ensuring the video file never leaves the user's machine.

What You Can Do With OpenSubs

**Transcribe Videos** — Transcribe speech from videos using Whisper, with models ranging from 40 MB to 250 MB, downloaded once and cached by the browser.
**Translate Subtitles** — Translate subtitles using Chrome's built-in translation or by bringing your own API key from providers like Claude, OpenAI, or DeepL.
**Style Subtitles** — Style subtitles with 12 different styles, including word-by-word highlighting, trimming, and resolution control.
**Burn Subtitles** — Burn subtitles into MP4 videos using libass, compiled to WebAssembly, and encoded back into an MP4 using WebCodecs.
**Export Subtitles** — Export subtitles as .srt, .vtt, or .ass files, which can be used elsewhere.
**Private and Secure** — Ensure the video file never leaves the user's machine, with no upload endpoint and no account required for most features.

OpenSubs's Key Features

🔥 Subtitle Generation

⚡️ Speech Recognition

✨ Translation

🚀 Burning Subtitles

OpenSubs's FAQ

What is OpenSubs and how does it work?

OpenSubs is a free AI subtitle generator that runs in your browser, allowing you to transcribe, translate, style, and burn subtitles into a video without uploading it anywhere.

Does OpenSubs require an account or upload my video?

No, OpenSubs does not require an account and does not upload your video, as it reads the file directly in your browser and every step runs on your own machine.

How much does OpenSubs cost to use?

Everything that runs on your machine is free, but translation on OpenSubs' own backend costs 1,000 credits for $5, with the price of a job shown before you run it.

Can I add subtitles to a video for free using OpenSubs?

Yes, you can add subtitles to a video for free by dropping the video onto the OpenSubs page and generating subtitles from its audio, with no account or watermark required.