Add Watermarks to Videos Instantly. Privately. Free.

Yes! LogoOnVideo is completely free with no hidden fees, no premium tiers, and no watermarks of our own on your output. We support the site through non-intrusive advertising, which keeps the tool accessible to everyone—from hobbyists to professional content creators.

Absolutely not. Your videos are processed entirely in your browser using WebAssembly technology. We never see, upload, or store your content. Once you close the tab, all data is gone—as if you never visited. This is true privacy-first design.

We support MP4, WebM, and MOV video files for input. The output is always a high-quality MP4 file that's compatible with all major platforms including YouTube, Instagram, TikTok, Facebook, and more.

Since processing happens in your browser, the limit depends on your device's available memory. Most modern computers can handle videos up to 500MB-1GB easily. For best results with larger files, close other browser tabs to free up memory.

Absolutely. You retain full ownership and rights to your watermarked videos. Use them for YouTube monetization, client work, paid promotions, advertising campaigns—whatever your business needs.

For social media, avoid the right side (where platform buttons appear) and the bottom 20% (where captions display). Upper-left is safest for most platforms. For maximum protection, use our animated styles like Ghost Float that move across the frame.

No. Our tool maintains your original video quality while adding the watermark. We don't compress, downgrade, or alter your video resolution. The output bitrate and quality match what you uploaded.

Yes, our tool works on modern mobile browsers including Chrome and Safari on iOS and Android. However, processing large videos may be slower on mobile due to hardware limitations. For best performance, use a desktop computer.