Auto Subtitle Generator — Generate accurate, synced subtitles for any video with AI. Export SRT, VTT, or burn captions into video — free.

About Auto Subtitle Generator

Automatically add accurate, word-timed subtitles to any video with AI. Paste a URL or upload a file — our speech model transcribes, aligns, and styles captions in seconds. Export SRT, VTT, or burn captions directly into the video.

How it works

  1. 1Paste a video URL or upload a file.
  2. 2AI transcribes and word-aligns the audio.
  3. 3Choose a caption style and download SRT, VTT, or a captioned video.

Why use this tool

  • Word-level timing — captions appear in sync, not line-by-line.
  • Works with accented speech, background music, and multiple speakers.
  • Customize font, color, and position before export.
  • Export SRT for YouTube, VTT for web, or a fully-captioned MP4.
  • Free tier available — no account needed for basic use.

Frequently asked questions

What languages are supported?

English is fully supported today; additional languages are on the roadmap.

Can I edit the captions before exporting?

Yes — you can tweak text, adjust timing, and change styling before export.

What output formats are available?

SRT, VTT, plain text, and a rendered MP4 with burned-in captions.

How long can the video be?

Free usage supports shorter clips; longer videos can be processed on paid plans.

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