A watermark tells people where a photo came from and makes casual reuse less attractive. Photographers mark portfolio images, shops mark product photos, and many people mark copies of personal documents before sending them to a landlord or a service provider.
Be realistic about what it does: a small corner mark can be cropped out in seconds, and a determined person can retouch almost anything. A tiled watermark across the whole image is much harder to remove, which is why it suits documents and previews.
Your photos are processed in your browser and never uploaded, which matters when the images are private documents.
How to use it
- Add one or more photos.
- Choose the watermark type. For text, type your words and pick the font, color and bold. For a logo, choose an image file, ideally a PNG with a transparent background.
- Choose a position on the 3 × 3 grid (corners, edges or center), or choose tile to repeat the mark diagonally across the photo, with an angle slider.
- Set the size as a percentage of the photo width, the opacity (5–100%) and the margin from the edge. Text can also get a soft shadow.
- Check the live preview of the first photo, then download each file or all of them as a ZIP. Each photo keeps its original format.
Settings that work in practice
Because the size is relative to the photo width, the watermark looks the same on a 4000-pixel camera photo and an 800-pixel web image in the same batch. You can mix resolutions without adjusting anything.
Some starting points, to adjust by eye:
- Corner signature for a portfolio: text or logo at about 15–25% of the width, opacity 40–70%, a comfortable margin. Turn on the shadow if the photo has both light and dark areas behind the mark.
- Tiled mark for previews: a short word or your site name, opacity 15–30%, angle around 30–45 degrees. Low opacity keeps the photo viewable while making a clean copy impossible.
- Logo: use a transparent PNG. A JPG logo carries its white rectangle with it, which looks like a sticker on top of the photo.
Center placement at low opacity is a middle ground: harder to crop than a corner mark, less intrusive than tiling.
Marking copies of personal documents
When a service asks for a copy of your ID card, passport or a bill, tile a line such as Copy for apartment rental, November 2026 across it. If the copy leaks, it is clearly tied to one purpose and harder to reuse for something else. Keep the opacity high enough that the text is readable, and check that important fields stay legible.
Before sharing any photo, also consider removing its hidden location data with Remove EXIF and location. To hide part of a document completely, such as a number the recipient does not need, use Blur and redact. If you only want a single caption or date on one picture, Add text to image gives you free placement and more styling.
Frequently asked questions
Can someone remove my watermark?
A small corner mark is easy to crop or retouch. A tiled watermark across the whole image is far harder to remove cleanly. No watermark is impossible to remove, but it raises the effort considerably.
Does adding a watermark reduce quality?
The photo is saved again in its original format. For JPG files this means one more round of compression, which is normally not visible. PNG files are saved without loss.
Can I use my company logo?
Yes. Choose the logo file as the watermark image. A PNG with a transparent background gives the cleanest result.
Will the watermark look the same on photos of different sizes?
Yes. The size is set as a percentage of each photo's width, so the mark scales with the image and keeps the same proportions across the batch.