Upload your video to start adding dynamic captions

Free AI caption generator that runs entirely in your browser. Auto-transcribe English speech, style word-by-word animated captions for TikTok, Reels and Shorts, and export SRT or burned-in video. Your video is never uploaded.

• ✨ Word Highlighting: Spoken words glow, scale, and pop in real time as video plays.
• 🎨 Unlimited Custom Colors: Set primary text, highlight spoken word, and background colors.
• ⚡ SRT & Video Export: Burn subtitles into exported video or download SRT files.
• 🔒 100% Client-Side Privacy: Videos never leave your device.