Free Image Watermark
Add a text watermark to JPG, PNG or WebP images. Pick the corner, set the opacity and rotation, batch-process multiple files at once.
Drop JPG, PNG or WebP files here
…or click to choose from your device
Files stay in your browser — nothing is uploaded.
Position
Higher quality = larger file. 85–92% is usually invisible to the eye.
Drop image files in to get started.
Your file never leaves your computer
This tool runs entirely in your browser. There is no upload endpoint on this page — the PDF library does all of the work locally on your device, the result file is generated in memory, and the download starts from your own machine. Open your browser's network panel and verify: nothing is sent.
FAQ
Image Watermark questions, answered
Why watermark images at all?
For deterring casual theft of original photography or design work that you share online. Visible watermarks won't stop a determined attacker (a few minutes of cloning will remove them), but they do stop accidental reposting, social sharing without attribution, and AI scraping into training sets.
How big should the watermark be?
For deterrence, big enough to read clearly but not so big it ruins the image — 3–5% of the shorter side, opacity around 60%, positioned in a corner is the standard. For maximum protection, scale up to 6–8% and consider a diagonal centre watermark — uglier but harder to remove.
Can I upload my own logo as the watermark?
Not yet — this version supports text only. Image-logo watermarking is on the roadmap. For now, an attribution string like "© Your Name 2026 · yoursite.com" covers most use cases.
Will the watermark look the same on all my images?
The size is calculated as a percentage of each image's shorter side, so it scales proportionally. The position is consistent — bottom-right is bottom-right on every image regardless of aspect ratio.
Is anything uploaded?
No. The Canvas API draws and re-encodes everything locally. DevTools → Network will confirm — your images never leave the browser.
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