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A watermark remover that never sees your video

Free Video Watermark Remover is a small, independent tool. All the work happens in your browser; our server only counts free exports and handles Pro billing. Questions or a clip that did not come out clean? Write to support@freevideowatermarkremover.com.

WebCodecs
decodes and encodes every frame in your browser
2-pixel ring
of clean pixels feeds each rebuilt box
H.264 MP4
is what you download, with the AAC audio copied
800 MB
is the largest file the remover opens

How it works

  1. Your browser opens the file from your disk. MP4 and MOV files are read with mp4box.js; each video frame is decoded by WebCodecs, the video codecs built into the browser (usually hardware accelerated).
  2. For every decoded frame, each box you drew is rebuilt. The tool averages a 2-pixel ring of clean pixels just outside each side of the box and blends those four edges across the box as a smooth patch (a Coons patch). Any straight colour gradient across the box comes out exactly right. Sides that touch the frame edge are skipped and the others carry the fill.
  3. Between frames, tiny changes in that ring (compression noise) are averaged with the previous frame, while real motion passes through, so the patch does not shimmer.
  4. The frame is encoded to H.264 with WebCodecs at about 1.3 times the source bitrate, and the original AAC audio samples are copied into the new MP4 without re-encoding. WebM files, which mp4box cannot read, are played once in a hidden player and re-encoded without audio.
  5. The finished file is handed to you as a download created inside the page (a blob: link). It is never sent anywhere.
The demo clip’s bottom-right corner with its AI SAMPLE badge
The demo clip’s corner badge, enlarged

Check that nothing is uploaded

  1. Open this site in Chrome or Edge on a computer.
  2. Open the developer tools (F12, or Cmd+Option+I on a Mac) and go to the Network tab.
  3. Drop a video into the remover, draw a box and press Remove watermark.
  4. Look at the Size column: the page scripts, mp4box and the muxer load, and one tiny request to /_serverFn counts your free video. None of them is anywhere near the size of your video.
  5. To be strict: once the progress bar moves, switch the Network tab to Offline. Cleaning finishes and the download still works.
The same corner after cleaning, with only water left
The same corner after Remove watermark

What it can and cannot do

  • It cannot see under a solid mark. The boxed area is filled to match its surroundings; it looks natural on skies, water, walls and soft backgrounds and smoothed on fine detail, faces or text.
  • A mark that moves continuously across the frame needs a box over its whole path, which rebuilds a larger area. Marks that sit still or jump between a few corners work best.
  • Pixels outside the boxes are not touched by the remover. Because the video is re-encoded, the file is not bit-identical; at the bitrate used it looks the same at normal viewing size.
  • Metadata from the original file (including C2PA content credentials, where present) is not copied into the new MP4. We do not read or target it; it is a side effect of re-encoding.
  • HEVC (H.265), VP9 and AV1 inputs depend on what your browser can decode. If decoding fails, convert the file to H.264 MP4 first.
A whole frame of the demo clip with its badge
A whole frame, before

Plans

Free: 3 videos a day (reset at midnight UTC), up to 1080p, up to 2 boxes, no account, nothing added, same quality as Pro. Stills (PNG, JPG, WebP) are free and not counted. Without an account, the daily count is kept against a one-way hash of your IP address, not the address itself.

Pro, $5.99 a month or $39.99 a year: unlimited videos, 4K (2160p), 3 boxes, a queue that applies the same boxes to several videos, and priority email support. Cancel any time from Settings → Billing; you keep Pro until the end of the period you paid for.

The same frame after cleaning
The same frame, after

Responsible use

Use it on your own videos and on clips you have the rights to edit. Removing a visible mark does not change who owns a video, what a generator’s terms allow, or a platform’s rules about labelling AI-generated content. Do not use it to take credit for someone else’s work or to present AI video as real footage.

Seedance, Dreamina, Higgsfield, Sora, PixVerse, Hailuo, MiniMax, TikTok and Instagram are trademarks of their owners. This is an independent tool, not affiliated with or endorsed by any of them.

The demo clip’s bottom-right corner with its AI SAMPLE badge
The demo clip’s corner badge, enlarged