LogoShield Studio stamps your logo onto videos of unlimited length and any format, right on this page. Pick a size, a color, and an animation style, then render a locally-processed export in seconds. Nothing you upload ever leaves your device.
Six watermark variants, live preview, and a locally-rendered export — the workspace opens on its own page so nothing here ever gets in its way.
Open the Editor →Six watermark variants, real anti-removal design, and rendering that stays on your machine.
The Diagonal Shield variant repeats your logo across the entire frame instead of one corner, so there's no single clean patch for automated removal tools to reconstruct without visibly damaging the footage.
Because rendering happens locally with ffmpeg compiled to WebAssembly, there's no server-side file size cap tied to a paid plan — the practical limit is your device's memory.
Pulse, slow-rotate and fade-ghost animations are baked frame-by-frame into the export, not just previewed — the motion travels with the file.
Scale relative to the source resolution, tint toward your brand color, and place it in any of nine anchor points or let it slide across the frame.
The encoder runs with an ultrafast preset and copies the audio track untouched, so most clips finish in a fraction of their own runtime on a modern laptop.
Your video and logo are read directly from disk into browser memory. There is no upload step and no third-party processing server in the pipeline.
Any common container works. A transparent PNG logo gives the cleanest result.
Pick static, sliding, pulsing, rotating, fading, or full-frame shield tiling, then tune size, opacity and color.
The in-browser engine bakes the watermark permanently into a new MP4 you download straight away.
Yes. Rendering runs on an open-source engine compiled to WebAssembly and executes locally in your browser tab — there's no paid API key or subscription involved.
No watermarking technique is mathematically unremovable, but the Diagonal Shield mode covers the full frame with repeated, semi-transparent copies rather than one corner mark, which makes clean automated removal far harder without visible frame damage. See the full FAQ for details.
Most common containers and codecs your browser or ffmpeg can decode, and there's no artificial length cap — long files are simply bounded by your device's available memory.