Unlimited Free AI Caption Generator
Free AI Caption Generator - Create unlimited professional, scroll-stopping captions in minutes.
Upload your video or audio, choose a caption style, and turn every spoken word into something people stop to watch. 100% free. Your project files stay on your device.
100% free, no signup
Source media stays private
No watermark on exports
Choose your look first
Browse caption styles before you upload.
See the finished treatment first. Every available style is free to try and editable after you add your video or audio.
Made for finished videos
How the free AI caption generator works.
Make, refine, and export your captions without an account, a watermark, or a paid upgrade.
- Add your mediaChoose a video or audio file and set the caption canvas.
- Generate and edit captionsWork with editable captions and choose the visual treatment that fits your project.
- Export your finished versionDownload a watermark-free MP4, TXT transcript, SRT, word-timed SRT, WebVTT, or a Chrome-first alpha layer.
- Cost
- 100% free, no signup required
- Privacy
- Your video and transcript stay in your browser
- Caption files
- TXT transcript, SRT, word-timed SRT, and WebVTT
- Captioned video
- Watermark-free MP4 ready to share
- Alpha layers
- Full or split transparent layers, best in Chrome
- Audio to captions
- Convert audio files, including MP3s, into captions, SRT files, or alpha-channel caption layers.
Source media stays in your browser
1Media ready
2Captions ready
3Make it yours
4Export MP4
Live previewCaption-safe area on
Waiting for media
Private canvas9:16 vertical
+Choose video or audio to begin
Captions, timing, and export stay in this browser.
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CAPTION MAPNo generated cues