FAQ
Tiled or single-corner watermark?
A corner watermark is easy to crop out. Tiling covers the whole image and is hard to remove, better for previews and unpaid client proofs.
What opacity should I use?
20-40% for a corner watermark. Tiled watermarks can go as low as 15-25% because the repetition makes up for the subtlety.
Is the original image modified?
No. The watermarked result is exported as a new file and the original stays untouched.
About this tool
Two watermark types: text and image logo. Text exposes content, size in pixels, colour, opacity, nine-grid position, rotation and tiling; a logo exposes width percentage, opacity, position and tiling. Font size is in pixels rather than a ratio, so the same settings look different on a portrait versus a landscape image — readjust after swapping images.
Logo width is a percentage of the image width, which is why it adapts across large and small photos; that beats a fixed pixel size. To make a watermark hard to crop away, use tiling rather than a single corner. Tiling starts at the top-left and repeats at a fixed gap (about 0.8 × font size for text, 0.3 × width for logos), so the right and bottom edges may be left with less than a full cell — there is no auto-centring or trimming.
The preview is capped: its canvas is at most 520 pixels wide while the export redraws at full size. Relative size, position and opacity are accurate; pixel-level sharpness is not — on a multi-megapixel image the same font size looks thinner and crisper than in the preview. With very small text or low opacity, export and check a crop before committing.
Two fixed behaviours: the font is bold sans-serif with no font choice (for a nicer typeface, render it as a transparent PNG and use logo mode); and export is always PNG, which preserves the look on transparent sources but produces larger files than the original JPEG and drops EXIF.