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Privacy: All video processing runs locally in your browser. Videos are never uploaded to any server, keeping your data private and secure.
🎞️ Upload video
🎬 Click to choose or drop a video
MP4 / WebM / MOV and other browser-playable formats supported
👁 Preview (live watermark)
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📦 Export
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Status: Ready
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Technical References
- WebCodecs API — MDN: https://developer.mozilla.org/en-US/docs/Web/API/WebCodecs_API
Frequently Asked Questions
What types of watermarks are supported?
Text watermarks and image (logo) watermarks are supported, with adjustable font size, color, opacity, and scale.
Can I control the watermark position?
Yes. Nine-grid positioning is supported (top-left, center, bottom-right, etc.). You can also enable tiling mode and adjust spacing, tilt angle, and margins.
Can I preview the watermark effect?
Yes. The preview renders the watermark in real time — what you see is what you get, and adjustments apply instantly.
Which output formats are supported?
WebM and MP4. WebM offers better compatibility, while MP4 uses WebCodecs encoding. When the browser supports audio encoding, both formats keep the original sound; otherwise a video-only version is produced automatically.
Are videos uploaded to a server?
No. Watermark compositing and encoding are done entirely in your browser — the video never leaves your device.
Technical References
- WebCodecs API — MDN: https://developer.mozilla.org/en-US/docs/Web/API/WebCodecs_API