Subscription tier limits
Up to 953.7 MB
Batch: 1 file
Up to 9.31 GB
Batch: 5 files
Up to 93.13 GB (streamed)
Batch: 50 files
Drop your video and a matching .srt or .vtt file
Pick a style preset (TikTok, YouTube, Subtle, Bold)
JAD renders the subtitles into every frame and exports the result
0 bytes uploaded. Subtitle Burner (SRT / VTT → MP4) runs entirely in your browser using WebCodecs, WebGPU, and FFmpeg.wasm. Pro + Media uses chunked streaming via the File System Access API — your video is never buffered to RAM in full and never leaves your machine.
Soft subtitles depend on the player rendering them. TikTok, Instagram Reels, and most social platforms strip soft subs on upload — burned subs survive every re-encode.
Use any plain-text editor to fix typos, then drop the corrected .srt back into JAD. The tool is designed for batch turnaround.
Smart-centred crop from 16:9 to 9:16 (vertical) or 1:1 (square). Pan-and-scan logic keeps the action in frame for short-form social.
Open toolTwo-pass palette generation produces GIFs that look as good as the source. Pick frame rate, width, and looping behaviour locally.
Open tool