Stamp your name or your logo onto a photo — one corner or tiled across the whole frame — and do a whole folder in one pass.
Watermark Images stamps text or your own logo onto photographs — tucked into a corner, centred, or tiled diagonally across the whole frame — and applies the same stamp to an entire batch in one pass.
A watermark has two jobs that pull against each other: it has to be visible enough to discourage someone from passing the image off as theirs, and quiet enough that it does not ruin the photograph. Opacity and size are the dials that balance those. A corner mark at around 6% size and 55% opacity is the usual compromise for a portfolio or a listing — present, readable, and easy to ignore. A tiled mark at low opacity across the whole frame is far harder to crop or clone out, which is what you want for proofs sent to a client before payment.
Everything is measured as a percentage of the image rather than in pixels, which is the part that makes batch work reliable. Set the mark to 6% and it occupies the same proportion of a phone snapshot and a forty-megapixel studio file. A fixed pixel size would be a postage stamp on one and cover the subject on the other.
Text marks get an optional drop shadow, because white text vanishes on a bright sky and black text vanishes on a dark suit — the shadow keeps the mark readable either way. Logo marks are drawn straight from your file, so a transparent PNG stays transparent, and the angle control lets you run it diagonally, which is both harder to crop out and the convention for proofs.
Nothing is uploaded — the photos and your logo are both read straight into this page — and there is no watermark of ours added on top, which is more than most free watermark sites can say.
Yes. As well as JPEG, PNG, WebP, GIF, BMP, ICO and AVIF, this tool reads HEIC and HEIF from a phone, TIFF, Photoshop PSD and PSB, TGA, Netpbm, Apple ICNS, and camera RAW from every major brand. Anything the browser cannot open by itself is decoded on your own device first. Your logo file can be any of those formats too.
No. The only thing stamped on your image is the text or logo you chose. There is no account, no export limit and no promotional mark, because the tool runs entirely in your browser and costs us nothing per image.
For a discreet credit, around 6% size at 55% opacity in a corner. For proofs you want protected, tile the mark at 10 to 15% opacity across the whole frame at an angle — low enough to see the photo through it, spread widely enough that cropping it out means cropping out the picture.
It is sitting on a bright part of the photo. Turn on the drop shadow, which outlines the text so it reads against both light and dark areas, or move the mark to a different corner. For logos, a version with a contrasting outline works best.
Proportionally, yes. Size, margin and tile spacing are all percentages of each image's own dimensions, so the mark occupies the same share of a small image and a large one. That is what makes a mixed batch come out looking consistent.
A determined person can remove almost any watermark, especially a small one in an empty corner. A tiled mark across the subject is much harder because there is no clean area to copy from. Treat a watermark as a deterrent and a claim of authorship, not as security.
The pixels underneath are untouched and nothing is resized. Saving as JPEG or WebP re-encodes the file, so keep the quality slider at 90 or above, or save as PNG for a lossless copy.
Yes, and it is the best choice — the transparency is preserved, so the logo sits on the photo rather than in a white box. The opacity slider then applies on top of whatever transparency the logo already has.