Free Subtitle Generator

Generate an SRT subtitle file from your video, free, right in your browser. Your video never leaves your device — all processing happens locally using an AI model.

Choose a video or audio file

Drag & drop or click to browse — MP4, MOV, WebM, MP3, WAV

Maximum 5 minutes · Processed entirely in your browser

How it works

  1. Pick your video

    Choose any video or audio file from your device (MP4, MOV, WebM, MP3). No upload — the file stays on your computer.

  2. Wait for transcription

    On your first use, a small AI speech model (~40 MB) downloads once to your browser cache. Then it transcribes your video's speech — entirely on your device, with no server involved.

  3. Edit if needed

    Review the generated subtitles and fix any mistakes by clicking on the text. Timing edits are not yet supported.

  4. Download your subtitle file

    Download an SRT file (compatible with VLC, YouTube, most video editors) or a VTT file for web video players.

Privacy promise: Your video, audio, and transcript are processed only within your browser and are never sent to any server. The only external request is the one-time model download from Hugging Face's CDN.

Who is this for?

Content creators

Add subtitles to YouTube videos, TikToks or reels without paying for a transcription service.

Video editors

Get a rough SRT to import into Premiere Pro, DaVinci Resolve or CapCut, then refine timing.

Accessibility

Make your video content accessible to viewers who are deaf, hard of hearing, or watching without sound.

Students and educators

Transcribe lecture recordings, interviews or presentations into an editable text format.

Limits and supported formats

  • Maximum video length: 5 minutes
  • Language: English only (v1)
  • Supported formats: Whatever your browser can decode — typically MP4, MOV, WebM, MP3, WAV
  • Accuracy: Uses Whisper Tiny, a small but capable model. Best with clear speech in a quiet environment. You can edit any line before downloading.
  • Processing time: 1–3 minutes depending on video length and device speed

Frequently asked questions

Is the Subtitle Generator really free?
Yes, completely free. There is no signup, no subscription, and no payment required.
Is my video uploaded to a server?
No. Your video is processed entirely within your browser using an AI model that runs on your device. The video, audio, and transcript never leave your computer.
What video formats work?
MP4, MOV, WebM, MP3, and WAV work on most browsers. Exotic formats like MKV or AVI may not.
Why is there a 5-minute limit?
Processing long videos requires significant memory and time on your device. 5 minutes is the reliable limit for most computers and phones.
How accurate are the generated subtitles?
Good for clear English speech. It may struggle with accents, background noise, or technical terms. You can edit every line before downloading.
Which languages are supported?
English only in the current version.
Can I edit the subtitles before downloading?
Yes. Click any subtitle line to edit the text, then download.
What's the difference between SRT and VTT?
SRT is the most widely supported format — compatible with VLC, YouTube, most video editors. VTT is the web standard. When in doubt, download SRT.