Add subtitles to video
Burn SRT/VTT subtitles into your video or embed them as a soft track. Runs entirely in your browser — files never leave your device.
Video file
🎬
Select a video
MP4, MOV, WebM — up to 50MB
Max file size: 50MB
or drag and drop · press Enter to browse
Subtitle file
💬
Select an .srt or .vtt
SRT or VTT format
Max file size: 5MB
or drag and drop · press Enter to browse
How to Use
- Pick the video file (max 50MB).
- Pick an SRT or VTT subtitle file.
- Choose between burn-in or soft subtitle mode.
- Click Add subtitles — your subbed MP4 will be downloaded.
All processing is done in your browser, and files are never sent to a server.
Frequently Asked Questions
Burn-in renders the subtitles into the video frames so they're always visible. Soft subtitles are a separate track that the viewer can turn on/off.
No. Encoding runs in your browser via FFmpeg WebAssembly. Your files never leave your device.
MP4 with H.264 is the most universally compatible format. The original codec is re-encoded for accuracy when burning subtitles in.