Watermark Photos — Text or Logo, in Bulk
Browser tool that stamps the same text or logo watermark on a batch of photos
Runs in your browser · nothing is uploaded
Drop the photos to watermark here
Up to 50 JPG, PNG or WebP files at once, 50 MB each. You can also paste a copied image with Ctrl+V (⌘V on a Mac). Nothing leaves your browser.
Fonts are served from this site (SIL Open Font License). Characters a font lacks are drawn with your device font.
A share of the photo's shorter edge, so photos of any size get the same look.
Files keep their format (JPG and WebP at quality 92) and the name gets -watermarked.
The picture is redrawn, so the original EXIF data (camera, time, GPS location) is not carried over; the photo's rotation is applied. Nothing is uploaded.
Preview (first photo)
Add photos to preview the result here.
What it is
A batch watermark tool for photos you post on a blog, a shop or a marketplace. Choose a text watermark such as your name or brand, or upload a logo, then put it in one spot or repeat it diagonally across the whole picture. Dozens of photos get the same treatment in one go and come back as a single ZIP.
How to use
- Drop photos on the dashed area or press Choose photos (up to 50 at a time).
- Under Watermark type choose Text and type it (for example © Rabbit Studio), or choose Logo image and add the logo file.
- Set the font, colour and shadow, the Opacity and the Size. Size is a share of the photo’s shorter edge.
- Under Layout pick One spot (then one of nine positions) or Repeat across (then the angle and spacing).
- Check the preview of the first photo and download each card or Download all (ZIP).
How it works
- Size: text height and logo width are a percentage of the shorter edge. 5% is 150 px on a 4000 × 3000 photo and 30 px on an 800 × 600 one, so every photo looks alike.
- Margin: a single mark sits 3% of the shorter edge away from the edges.
- Tiling: a rotated grid is centred on the photo with every other row shifted by half a step, and it extends past the corners so no gaps remain. Spacing is relative to the mark size. If a tiny mark with tight spacing would need more than 2,000 copies, both spacings grow evenly, so the whole photo is still covered rather than some rows being left out.
- Saving: same format and resolution as the original, with
-watermarkedadded to the name. Browsers that cannot write WebP (Safari) save a PNG and say so on the card. - Metadata: the picture is redrawn, so the original EXIF data, including the location, is not kept.
Examples
| Purpose | Suggested setting |
|---|---|
| Credit line on blog photos | Text, bottom right, size 3-4%, opacity 60%, shadow on |
| Marketplace photos you don’t want reused | Text (nickname and date), repeat across, angle -30°, opacity 25-35% |
| Product shots | Transparent PNG logo, top left, size 15-20%, opacity 70% |
To print the capture date as well, try the photo date stamp tool; to hide personal details first, use the blur and pixelate tool.
FAQ
Will a watermark stop people from reusing my photos?
Not completely. A small mark in a corner is easy to crop away, so for photos you really want to protect use the tiled layout at about 30-50% opacity. Keep your originals and share only the watermarked copies.
What kind of logo file works best?
A PNG with a transparent background looks most natural; a JPEG logo brings its white rectangle along. The logo width is a share of each photo's shorter edge, so it looks the same on photos of different sizes.
Which fonts can I use?
Sans (Pretendard), a heavy display face, a serif, a handwriting and a brush font, all under the SIL Open Font License and served from this site. Characters a font does not include, such as some emoji, are drawn with your device font.
Do quality or format change?
Files keep their format. JPEG and WebP are written again at quality 92, PNG without loss, and the resolution stays the same (only very large photos on an iPhone or iPad are scaled to the device's canvas limit).
Are my photos uploaded?
No. Drawing the watermark and saving happen in your browser, and only the finished files are downloaded.
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