Text or real logo
Use a crisp text signature or a transparent logo file. The original logo proportions are preserved.
Protect a whole image set in one pass
Type a signature or choose your logo, preview it on the first image, then stamp the same proportional layout across every size. No account, server upload or watermark from us.
Drop images to watermarkCtrl/⌘ V paste an imageJPEG, PNG, WebP or AVIF · up to 50 MB each
Batch readyFiles stay local
Design one watermark for the whole batch
© ConvertPixel![]()
Decoding, compositing and export happen in a Worker on this device.
Watermarked files
TEXT · LOGO · TILE
A consistent mark without handing over your originals
Cloud watermark tools must receive every original before they can stamp it. Here, one proportional design is rendered against each image inside a dedicated Worker, so mixed dimensions stay visually consistent and private files remain on your device.
One layout, every size
Scale and margins are relative to each source, so portrait, square and landscape images remain consistent.
Batch without a queue limit
Process multiple files sequentially to protect browser memory, then download individually or as one ZIP.
Watermark questions
Are my originals uploaded?
No. Image pixels are decoded, composited and encoded inside your browser. The app may fetch its code or codec the first time, but those requests do not contain your files.
Does a watermark prove copyright ownership?
No. It is a visible attribution and copying deterrent, not legal proof or an invisible forensic watermark.
Why is a tiled watermark useful?
A repeated diagonal pattern is harder to crop away. A corner mark is cleaner when attribution matters more than deterrence.