Free AI Subtitle Generator and Caption Studio

Use this free AI subtitle generator to create captions from video or audio files, edit word-by-word captions, preview subtitle timing, and export TXT, SRT, VTT, JSON word timestamps, ZIP files, and captioned MP4 videos.

AI captions for YouTube Shorts, Instagram Reels and TikTok

Create viral subtitles for YouTube videos, Shorts, Reels, TikTok clips, podcasts, interviews, tutorials, sermons, church messages, online courses, product videos, and social media ads. Choose caption presets such as single word captions, karaoke captions, Christian prayer captions, podcast subtitles, minimal captions, and creator-style captions.

Why creators use this subtitle maker

This online caption studio supports automatic transcription, word-by-word caption timing, multiple aspect ratios including 9:16, 16:9, 1:1 and 4:5, draggable caption position, safe area guides, subtitle file exports, and rendered captioned MP4 downloads.

Related Tools

FAQ

Is this AI subtitle generator free?

Yes. It uses a local Faster-Whisper backend for automatic transcription and subtitle generation.

Can I download SRT subtitles?

Yes. You can export SRT, VTT, TXT, JSON word timings, ZIP, and captioned MP4 files.

Can I create word-by-word subtitles?

Yes. Select single word mode or choose a viral preset for word-by-word captions.

Does it support YouTube Shorts and Reels?

Yes. The preview supports 9:16, 16:9, 1:1, and 4:5 layouts for Shorts, Reels, TikTok, and standard videos.