Batch Watermark Your Images Safely and Locally
Stamp text or a logo onto a whole folder of photos without uploading a single byte. Layers, outlines, diagonal tiling and full-resolution export, all inside your own browser.
Drop your images here
JPG, PNG, WebP, AVIF, GIF, SVG and iPhone HEIC. You can also paste one from the clipboard.
How it works
Drop your images
JPG, PNG, WebP, AVIF, GIF, SVG or an iPhone HEIC. They queue up and nothing is processed yet.
Design the watermark
Text or logo, with outline, shadow, plate and blend modes. Stack as many layers as you need.
Place it exactly
Nine anchor points, free dragging with the mouse, or a diagonal grid across the whole photo.
Export when you say so
PNG, WebP or JPEG at full resolution, one file or the entire batch packed into a ZIP.
Nothing leaves your device
Every pixel is composited by your own browser. No upload, no server, no waiting queue.
Non-destructive layers
The watermark stays a description and is never baked in, so undo costs bytes instead of megabytes.
Real diagonal tiling
The entire grid rotates in one pass, so the pattern stays even from edge to edge with no gaps.
Place it by hand
Drag it on the canvas, nudge with the arrow keys, zoom to the cursor and hold Alt to peek at the original.
A batch that scales
Only the photo you are looking at stays decoded, so a folder of 12 MP shots will not eat your memory.
Chained with the suite
Send the finished image straight to compress, crop, convert or resize for social without downloading it.
A canvas engine that scales with the photo
Every measurement of a layer is a percentage of the image width, so one setting looks identical on an 800-pixel thumbnail and on a 6000-pixel raw export. The tiled grid is painted as a repeating pattern in a single fill instead of thousands of separate draw calls, and only the photo on screen stays decoded in memory.
Your photos never travel
Files are read, composited and packaged inside the browser tab. Nothing is uploaded, stored or queued on any machine but yours, which also means the tool works with the network unplugged.
Built for people who ship images every day
Brand a marketplace listing, protect a photography portfolio before sending proofs to a client, or stamp an internal document as confidential. Anchor the mark to a corner, drag it exactly where the composition allows, or cover the whole frame with a diagonal grid that is genuinely annoying to remove.
The watermark is kept as a description of layers, never flattened into the picture. That is what lets you undo, reorder, duplicate and retune it at any moment without a single pixel being resampled twice, and what makes the same set-up apply cleanly to a batch of photos of completely different sizes.
Frequently Asked Questions
QDoes the watermark look the same on images of different sizes?+
Yes. Size, margin, outline and gaps are all stored as percentages of the image width, so the tool rescales them for each photo. A batch mixing a 900-pixel thumbnail with a 6000-pixel original comes out visually consistent.
QWhich image formats can I load?+
JPG, PNG, WebP, AVIF, GIF, SVG, plus the HEIC and HEIF files an iPhone produces, which are converted automatically. Photo orientation recorded in the EXIF data is honoured, so portrait shots no longer come out lying on their side.
QCan I put more than one watermark on a photo?+
Yes. Layers stack: a logo in one corner, a copyright line in the other and a faint tiled grid underneath is a perfectly normal set-up. Each layer keeps its own placement, opacity, rotation and blend mode.
QHow do I place the watermark exactly where I want it?+
Switch the layer to free placement and drag it on the canvas. The arrow keys nudge it a fraction of a percent at a time, Shift makes the steps bigger, the mouse wheel zooms towards the cursor, and holding Alt hides the watermark so you can check what is underneath.
QIs a tiled watermark hard to remove?+
Much harder than a single corner mark, especially with a low opacity and a blend mode that mixes it into the photo instead of sitting flat on top. No visible watermark is impossible to remove, but a diagonal grid across the whole frame makes it slow and lossy enough to stop casual reuse.
QDoes exporting reduce the quality of my photos?+
Only if you ask it to. PNG is lossless and is the default; JPEG and WebP expose a quality slider, and the resolution limit is set to keep the original by default. The previous version silently forced JPEG at 92 percent on everything, transparency included.
QDo the images get uploaded anywhere?+
No. Decoding, compositing, encoding and ZIP packaging all happen in the browser tab. Nothing is sent to a server, so the tool keeps working with the network disconnected.