Corner, centre or tiled: which to choose
A small mark in a bottom corner suits portfolios, product photos and social posts: it credits you without spoiling the picture, though it is easy to crop off. A large centred mark is harder to remove and suits proofs you send to clients before payment. A tiled pattern covers the whole image at an angle, which makes reuse difficult and is the usual choice for copies of documents shared for one purpose.
Marking copies of passports and ID cards
When an agency, landlord or employer asks for a copy of your passport, national ID or residence permit, a tiled watermark that names the purpose and the date, such as "For flat rental application only, Oct 2026", makes the copy far less useful to anyone who misuses it. Keep the text readable but light, around 30 to 40 percent opacity, so the details stay legible for the person who genuinely needs them.
Getting the size and opacity right
Size is set as a share of the image’s shorter side, so the watermark looks the same on a small phone picture and a large camera photo. Between 4 and 8 percent works for a corner credit; 12 percent and up suits a centred proof mark. An opacity of 40 to 60 percent is visible without hiding the subject. White text with a faint dark outline stands out on most photos; switch to black or grey on very bright, white backgrounds.
Arabic and mixed-language text
The watermark is drawn with your device’s own fonts, which join Arabic letters correctly and set the reading direction automatically, so a name such as محمد or a shop name in Arabic appears connected and right to left. You can mix Arabic and English on one line. Fonts differ slightly between phones and computers, so check the preview on the device you will save from.
What a watermark does and does not do
A visible watermark discourages casual copying and shows where a picture came from, but it is not technical protection: a determined person can crop or paint over a corner mark, and nothing stops a screenshot. The saved image contains no camera details or location, because it is redrawn on a canvas. There is no limit on use, and up to about 200 MB of images can go through in one batch. Related tools: