How do I add a watermark to an image?+
Drop the image into the tool above, type your text, and choose where it goes: any corner, an edge, or the centre. Set the size, opacity and angle until it looks right in the preview, which is the exact file you'll download. Then click Download. The image keeps its width, height and format.
How do I add my logo as a watermark?+
Switch Watermark to Logo and choose your logo file. A PNG with a transparent background works best, because only the logo itself shows. Set its size as a share of the image width, lower the opacity so the photo shows through, and pick a position. The same logo can go on up to 20 images at once.
How do I watermark many photos at once?+
Drop up to 20 photos together. Set the watermark once while looking at any of them in the preview, then click Download all as ZIP: every photo gets the same watermark, scaled to its own width, so it looks the same on a small photo and a large one. Each file is named after the original with _watermarked added.
How do I make a watermark harder to remove?+
Use Tiled, which repeats the watermark across the whole image, add an angle such as 30°, and keep the opacity high enough to cross the subject. A small mark in a corner is easy to crop out; a tiled one isn't. No watermark is impossible to remove, but tiling makes it much more work.
Does adding a watermark reduce image quality?+
Hardly. The image keeps its width and height, and Same as original saves it in its own format. PNG is lossless; JPG and WebP are saved at quality 92 by default, which looks the same as the original for photos. You can raise the quality to 100 under Save as.
What else should I check before sharing watermarked photos?+
Hidden metadata. Photos from phones and cameras often carry the camera model, the date and the GPS location of where they were taken. The watermarked copies made here are new files without that metadata, but your originals still have it: use remove EXIF data on any you share without a watermark.
Are my images uploaded anywhere?+
No. The watermark tool runs entirely in your browser, so your photos and your logo never leave your device and are never sent to a server. Every watermark is drawn locally. You can check this yourself: open your browser's network tab while you add a watermark, and you'll see that no image data is sent anywhere.