Auto-Caption Your Videos
TikTok Style, For Free
Upload your video, pick a style, and download it with captions already added — word-by-word highlights included. Free, instant, no account needed.
MP4, MOV, WebM · Up to 500MB · English
Drop your video here
or click to browse · MP4, MOV, WebM · max 500MB
How It Works
Three steps. Zero uploads. Completely free.
STEP 1
Upload Your Video
Drop any MP4, MOV, or WebM file. Your video is processed locally — nothing ever leaves your device.
STEP 2
AI Adds Captions
Our AI listens to every word and places captions at exactly the right time — no manual syncing needed.
STEP 3
Customise & Download
Preview the captions live, tweak the color and style to match your brand, then download your captioned video.
Everything You Need for Viral Captions
Word-by-Word Highlighting
Each word lights up in your chosen color exactly as it is spoken — the TikTok karaoke look.
100% Private
Everything happens on your device. Your video is never uploaded to any server.
Fully Customisable
Pick any highlight color, adjust font size, and choose where the captions appear on screen.
ALL CAPS Toggle
One click switches to uppercase — the bold look that dominates Reels and TikTok.
Fast on Every Visit
The AI runs instantly after the first use. No waiting, no re-downloads.
Audio Stays Intact
Your original audio is preserved in the downloaded video — nothing is altered.
Want AI-Generated Videos Too?
Shhots AI generates full product video ads from a single image — no filming, no editing. Add auto-captions and you are ready to post.
The Free Video Caption Generator That Actually Works
Our free AI video caption generator automatically transcribes your video and burns karaoke-style captions directly into it — no account required, no file uploads, no watermarks.
Unlike most auto-caption tools that send your footage to a server, everything happens privately on your own device. It works fast, and gets faster on every return visit.
The output matches the TikTok caption style — bold all-caps text with a word-by-word colour highlight that follows the speaker in real time. Customise the highlight color, font size, and caption position before downloading your video.
Need more than captions? Generate full AI product video ads with Shhots AI, or turn static images into video with the image-to-video generator.
Supported Video Formats
- • MP4 (H.264 / H.265)
- • WebM (VP8 / VP9)
- • MOV (QuickTime)
- • MKV and most browser-decodable formats
- • Maximum file size: 500MB
Caption Customisation
- • Highlight color — presets or pick any custom color
- • Font size — small to large
- • Position — top, center, or bottom of screen
- • ALL CAPS toggle
- • Caption pacing — faster or slower grouping