Word-by-wordviral captions.
Upload a TikTok, Reel or Short. Capsubs transcribes it and burns in bold captions that light up each word as it is spoken, ready to post.
1 free video every 2 weeks ยท No credit card
Try it on your video
Pick a look, create a free account and upload your video. You get it back captioned in about a minute.
The free plan includes 1 video every 2 weeks, with no watermark. No credit card.
Pick your style
Three styles, four highlight colors, and captions at the top, middle or bottom of the frame. You choose them when you upload.
Each line pops in and the spoken word lights up in your color.
- Word highlight
- Pop-in
- Shown at bottom
A solid black box behind every line, so captions stay readable on bright, busy footage.
- Word highlight
- Pop-in
- Shown in middle
Plain white words with a black outline. No highlight, no animation.
- White only
- No animation
- Shown at top
Built for serious creators
Videos Processed
Uptime SLA
Avg Latency
Countries Served
Everything you need
A powerful dashboard to upload, process, and manage all your captioned videos.
Drag & Drop Upload
Upload one video, or up to 5 at once on Basic and Pro. MP4, MOV, WebM, MKV and AVI up to 500MB, or 1GB on Basic and Pro.
AI Auto-Captions
Whisper large-v3 transcription. Bold captions that pop in and highlight each word as it is spoken, burned directly onto your video.
AI Voiceover (TTS)
Add AI narration with 6 voice options: Alloy, Echo, Fable, Onyx, Nova, and Shimmer.
Audio Control
Mute original audio or mix it with AI voiceover. Complete control over your video sound.
API on Pro
Automating a channel or building an app? Pro adds a REST API and webhooks for the same captions.
How it works
From upload to download in three simple steps
Upload
Drag and drop your video. MP4, MOV, WebM, MKV and AVI up to 500MB, or 1GB on Basic and Pro.
Process
Our AI transcribes, generates captions, and optionally adds voiceover. Watch progress in real-time.
Download
Get your captioned video with burned-in subtitles. Share directly or integrate via webhook.
Simple pricing
Start free. Upgrade when you post more.