This free tool lets you batch watermark photos without sign-up, without uploads and without any watermark of ours: add your own PNG logo or a text mark to hundreds of images in one go. Everything runs locally — your files never leave your device.
Unlike most batch watermark tools that scale the mark by image width, this one scales it by each photo's short edge. Mix portrait and landscape shots freely: a 20% watermark keeps exactly the same visual proportion on every photo in the album — no giant logos on vertical shots, no invisible marks on panoramas.
Drop your photos into the tool — JPG, PNG or WebP, hundreds at a time. The first photo appears as a live preview.
Choose a text or PNG logo watermark, then set position, size, opacity, rotation — or tile it across the whole image.
Click the button and download: a single photo downloads directly, multiple photos arrive as one ZIP archive.
Yes — completely free, with no sign-up and no hidden limits. We never stamp our own branding on your images: the only watermark on your photos is the one you design.
No. Everything runs locally in your browser using the canvas API. Your photos never leave your device, which also means processing speed does not depend on your internet connection.
The watermark size is calculated as a percentage of each photo's short edge, not its width. Most tools scale by width, so the mark looks huge on vertical shots and tiny on wide ones. With short-edge scaling, a 20% watermark keeps the same visual proportion across an entire mixed album.
You can load JPG, PNG and WebP photos. JPEG files are saved back as JPEG at 0.92 quality, PNG files stay PNG with transparency preserved, and WebP is exported as JPEG. Original resolution is always kept.
Hundreds — the tool is built for 200+ file batches. Photos are processed one at a time and memory is released after each image, then everything is packed into a single ZIP for download. One photo downloads directly without a ZIP.