Made Good Designs

Subtitle Generator

Generate subtitles for your videos automatically and for free — Whisper AI listens to the audio and creates time-coded SRT or VTT captions, ready for YouTube, Vimeo, Premiere Pro, DaVinci Resolve, CapCut and web players. Translate captions to English, set the line length, and edit before you download. Runs privately in your browser.

100% private — transcription runs on your device. Conversion happens on your device; nothing is uploaded.

100% private — runs in your browser

Transcription runs on your device with OpenAI’s open-source Whisper model — your audio is never uploaded. The model downloads once (40–250 MB) and is then cached by your browser. A fast computer with a modern browser (Chrome or Edge, ideally with WebGPU) transcribes an hour of audio in a few minutes; older devices are slower. Always check names and numbers.

How to generate subtitles for a video

  1. Drop your video (or its audio) in the box.
  2. Choose the spoken language and accuracy.
  3. Click Generate subtitles.
  4. Check and edit the captions, set the line length, then download SRT or VTT.

What you can use it for

  • Add captions to YouTube, Instagram and TikTok videos
  • Make videos accessible for deaf and hard-of-hearing viewers
  • Create English subtitles for foreign-language videos
  • Import captions into Premiere Pro, Final Cut, DaVinci Resolve or CapCut

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Frequently asked questions

How do I add the subtitles to my video?

Download the SRT file and upload it with your video on YouTube (Subtitles → Upload file), Vimeo or Facebook, or import it into your editor. Use VTT for HTML5 video players on websites.

SRT or VTT?

SRT is the most widely supported subtitle format for platforms and editors. VTT (WebVTT) is the standard for <track> elements in web video players.

Which languages are supported?

Whisper understands about 100 languages. The menu lists the most common ones; “Detect automatically” works for the rest. You can also translate speech in any supported language straight into English text.

Is my audio uploaded?

No. OpenAI's open-source Whisper model runs inside your browser. The model is downloaded once (40–250 MB) and cached; your audio never leaves your device.

How long does it take?

On a recent laptop with Chrome or Edge, an hour of audio takes a few minutes with the Balanced model (faster with WebGPU). Older phones and computers are slower — try the Fast model.

How accurate is it?

Clear speech with little background noise is transcribed very well. Accents, crosstalk, music and technical terms reduce accuracy — always check names and numbers before publishing.

Can I burn the subtitles into the video?

This tool creates subtitle files. To burn them in permanently, import the SRT into a video editor such as CapCut, DaVinci Resolve or Premiere Pro.