This tool is part of the Pro suite. Free users can preview but cannot export.
Subscription tier limits
Up to 953.7 MB
Batch: 1 file
Upgrade required
Up to 9.31 GB
Batch: 5 files
Up to 93.13 GB (streamed)
Batch: 50 files
Hardware-accelerated via WebCodecs / WebGPU on supported browsers (Chrome, Edge, Safari 17+).
Drop your video and watermark image
Pick position (corners, centre) and opacity
JAD composites via WebGPU and re-encodes via hardware
0 bytes uploaded. Watermark Engine (Logo Overlay with Opacity) 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.
No — JAD upscales the watermark with a Lanczos pass before compositing, so it stays sharp at any video resolution.
Yes. Alpha is preserved and blended via WebGPU's alpha-over operator.
AI face detection runs locally via TensorFlow.js BlazeFace. Blurs every face across every frame with no upload.
Open toolHard-burn captions into the video frame so they show on every player — TikTok, Instagram, X, and Reels. Style fonts, position, and colour locally.
Open tool