Watermarking a photo set
Put your studio name or handle on every proof before you send a gallery to a client, tiled if you want it uncroppable.
Stamp a watermark, resize, and re-compress a whole folder of images in one pass, then download the result as a ZIP. Everything runs locally in your browser — the files are never uploaded.
Drop the images you want processed
Apply one watermark, size, and format to every file, then download them as a ZIP. Nothing is uploaded — the whole batch runs in your browser.
Most image chores are not creative decisions — they are the same three operations repeated across a folder: shrink everything to a sane width, stamp a credit or © line on it, and re-encode it so the files are small enough to upload. Doing that one file at a time in an editor is where an afternoon goes.
This tool inverts the workflow: you set the watermark, the target size, and the format once, drop in the whole batch, and get a ZIP back with every file processed identically. Names follow a pattern you control, so the output slots straight into a CMS, a marketplace upload, or a client handover.
Because the work happens in your browser, the batch never leaves your machine. That matters more than it sounds for the usual inputs here — unreleased product shots, client photos, screenshots of internal tools.
Put your studio name or handle on every proof before you send a gallery to a client, tiled if you want it uncroppable.
Cap the longest edge at 1600 or 2000px and re-encode at 80–85% quality so a page of photos loads quickly.
Force one fixed width so every product image lines up in the listing grid instead of jittering.
Convert dozens of PNG screenshots to WebP or JPG and cut the total size by most of it before attaching them to a ticket or doc.
Add the whole batch at once; each file is read locally in your browser.
The preview shows the real output rendered from your current settings.
Every file is processed with identical settings and named from your pattern.
Up to 200 in one batch with Pro. The free tier processes 5 at a time, capped at 1600px on the longest edge and exported as JPG.
No. Decoding, resizing, watermarking, and ZIP packaging all happen in your browser, and the files never leave your device.
Downscaling is safe and often improves apparent sharpness. Enlarging beyond the source resolution cannot add detail, so keep the percentage at or below 100% for a crisp result.
The batch tool stamps text marks. For a logo image, build the layout in the collage editor, which accepts image layers and a custom watermark.
Yes. The size is a percentage of each image's shorter edge, so the mark looks the same on a 1000px thumbnail and a 6000px original.
JPG has no alpha channel, so transparency is flattened onto white rather than turning black. Export as PNG or WebP to keep transparency.