How to watermark an image
- Add your images. Drag them onto the box or click to browse, batch is supported.
- Pick text or logo. Type a watermark text and choose its size and color, or switch to Logo and upload a small PNG.
- Set opacity, rotation and position. Use the 3×3 grid to anchor the watermark to a corner, edge or the center, or turn on Tile / repeat to cover the whole image diagonally.
- Apply & download. Press Apply watermark, then download each image or grab them all as a ZIP.
Why watermark an image?
A watermark tells anyone who sees the image where it came from and, in most cases, discourages them from using it without permission. Photographers watermark portfolio previews and client galleries so a low-resolution sample can be shared publicly without giving away a print-ready file for free. Small businesses stamp a logo or handle onto social media graphics so a repost or screenshot still carries the brand back to its source, which is free advertising every time the image gets shared further. Teams also mark internal images as DRAFT orCONFIDENTIAL before circulating a mockup, a screenshot, or a work-in-progress design, the same way people watermark documents, just applied to a photo or graphic instead of a PDF page.
Because the watermark is drawn with canvas directly in the browser, you can preview it on the first image before committing, adjust the opacity so it stays subtle, and apply the exact same settings across an entire batch in one pass. That consistency matters when you are watermarking a full shoot or a set of graphics, every image gets the same mark in the same spot, at the same strength.
What tile / repeat mode is for
A single watermark in one corner is easy to defeat, crop that corner out and the mark is gone, or the rest of the image with it. Tile mode solves that by repeating the text or logo in a diagonal grid across the entire image, so there is no clean area left to crop without losing the subject too. This is the same idea used by stock photo sites and screenshot-sensitive previews: it will not stop someone determined to remove it entirely, but it raises the effort enough that casual copying and screenshot theft become impractical. Use a light opacity with tiling so the pattern protects the image without making it hard to actually view.
Text vs logo watermarks
A text watermark is the fastest option, type a name, a copyright line or a status word, pick a color and size, and it scales automatically to fit each image in the batch. A logo watermark is better for consistent branding, upload a PNG with a transparent background and it gets composited onto every image at the size, opacity and position you choose, transparency is preserved so only the logo shape shows, not a white box around it.
Frequently asked questions
Is my image uploaded anywhere?
No. Every image is decoded and stamped with canvas right in your browser tab. Nothing is sent to a server, so your photos never leave your device.
Does this work in bulk?
Yes. Drop in as many images as you like, set the watermark once, and it is applied to every image. Download each one or grab them all as a single ZIP.
Can I use my own logo instead of text?
Yes. Switch to Logo watermark, upload a PNG (transparency is kept), and set its size, opacity, position and rotation.
What does the tile / repeat mode do?
Instead of one watermark in a corner, it repeats the text or logo diagonally across the entire image, so there is no clean corner left to crop out.
Related: watermark a PDF · compress images · resize images