Add a Watermark to Photos
Put your name, your handle, or your logo onto a set of photos in one pass. Size, opacity, rotation and placement are set once and applied to every file you drop, and because the size is a share of each image rather than a pixel count, a phone snap and a 45-megapixel raw export come back with a mark that looks the same on both. The whole thing runs on decoded bitmaps inside this page, so the photos you are protecting are not uploaded to a stranger to protect them.
Drop the photos you want watermarked
Up to 30 files, 50.0 MB each. One watermark setting is applied to every one of them, sized as a share of each photo so it looks the same on all of them. Nothing is uploaded.
Nothing queued yet. Drop photos above — each one is decoded, stamped, and re-encoded inside this browser tab, so the originals never leave your device.
Build the mark you are stamping
A wordmark you actually like beats a typed name in Helvetica. Design one on Moda.
Try Moda free →Why the size is a percentage and not a pixel count
A watermark set to 200 pixels wide covers a third of a small web export and is a barely visible speck on a full-resolution camera file. That is the single most common reason a batch comes back inconsistent, and it is why every dimension here is relative: the mark is a share of each image’s width, and the inset from the edge is a share of the shorter side, so a wide banner does not end up with a mark that sits far from one edge and close to the other. Set it once against the first result you like, and the rest of the queue matches.
Corner, custom, or tiled — they defend against different things
A corner mark is an attribution: it says who made this and stays out of the picture. It is also the easiest thing in the world to crop off, which is fine if attribution is the goal. A mark placed over the subject is harder to remove but costs you the image as a portfolio piece. Tiling is the proof-photo answer — a repeating pattern across the whole frame cannot be cropped away without cropping away the photo, which is why photographers use it on client previews and nowhere else. Pick by what you are defending: credit, casual reuse, or a paywall.
Opacity, colour, and the photos that fight back
White at around 50% reads on most images and disappears on a bright sky; black does the opposite. There is no colour that works on everything, which is why the opacity and colour controls are next to each other and the results update as you move them. A rotated mark — 30 or 45 degrees — is noticeably harder to clone out than a horizontal one, because the removal tools people reach for work along straight edges. If you have a logo with a transparent background, use it rather than text: the transparency is preserved when it is stamped, so the mark sits on the photo rather than on a box.
What a watermark can and cannot do
It is drawn into the pixels, so it travels with the file — there is no layer to switch off, and re-saving or converting the image keeps it. It is not encryption and not a legal control. A corner mark crops off in seconds; a tiled one survives cropping but not a determined pass with a modern inpainting tool. What a watermark reliably does is stop casual reuse, make the source obvious when an image is reposted, and give you something to point at. Treat it as a deterrent and a credit line, and do not send anyone a full-resolution file you cannot afford to have taken.
Frequently asked questions
Are my photos uploaded to add the watermark?
No. Each file is decoded into a bitmap in this page, the mark is drawn onto a canvas here, and the result is re-encoded here. Nothing about that needs a server, and no request carrying your images is made — which matters more on this page than most, because the photos people want watermarked are exactly the ones they do not want handed to a stranger.
Can I use my own logo instead of text?
Yes — switch to the logo mode and drop a PNG, SVG, JPG, or WEBP. A transparent PNG or an SVG gives the best result, because the transparency is kept: the logo sits directly on the photo rather than inside a white rectangle. The logo is scaled to the size you set while keeping its own proportions, so it cannot come out stretched.
Why does the tiled pattern stop partway across a big image?
Because tiling is capped at 400 stamps per image. A very small mark with no gap can ask for tens of thousands of draws, which would lock the tab on a large photo, so the tool draws the first 400 and tells you how many the settings asked for. Increasing the watermark size or the gap between stamps brings the count under the cap and covers the whole frame.
Does watermarking reduce the image quality?
The mark itself only changes the pixels it covers. The re-encode is what costs quality: saving as JPG puts the photo through another lossy pass, so a JPG in and a JPG out has been compressed twice. At 90% that is invisible for most photographs. Save as PNG to avoid it entirely, at the cost of a much larger file, or as WEBP for a middle ground. The pixel dimensions never change — a watermarked file is the same size in pixels as what you dropped in.
Can I remove a watermark with this tool?
No, and that is deliberate. This tool only adds. Removing a watermark from an image you do not own is the thing every watermark exists to prevent, and building it would be building the attack against the users of this very page. If you need a clean copy of your own photo, keep the original: the watermarked file is a new file and the one you dropped in is untouched.