Watermark a PNG
Overlay a translucent repeating text watermark onto a PNG. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Watermark a PNG
- 1. Add the PNG to protect. Drop or browse for the image you want to mark. Proofs, portfolio pieces and any graphic you want traceable back to you all work as a source here.
- 2. Type the Watermark text and set Opacity (%). Enter the text you want overlaid, such as a name or copyright line. A low opacity keeps the mark faint and unobtrusive, while a high opacity makes it bold and hard to ignore.
- 3. Set Font size (px) and choose a Layout. Font size controls how large the text reads against the image. Layout picks between Tiled, which repeats the mark diagonally across the whole canvas, or Single (center), which places it once.
- 4. Download the watermarked image. The result carries your text overlaid at the opacity, size and layout you chose, ready to share, post or send without giving up an unmarked copy.
When to use Watermark a PNG
Watermark a PNG overlays translucent text on an image, either once in the center or tiled across the whole canvas. It is the tool for sharing a graphic while still marking it as yours.
- Protecting a proof sent before payment. A freelance designer sends a client a preview of finished artwork before the invoice is paid. A tiled watermark across the proof discourages the client from using it without paying first.
- Marking preview images on a stock photo site. A photographer lists preview images for sale online. Watermarking them with a repeating copyright line keeps the previews useful for browsing without being usable as a final asset.
- Branding a screenshot shared in a public forum. A company shares a screenshot of an in-progress product in a public community thread. A small centered watermark keeps the source clear if the image gets reposted elsewhere.
- Discouraging reuse of a portfolio piece. An illustrator posts finished work to a portfolio site and wants to make casual reuse harder. A tiled watermark across the piece keeps it presentable while still discouraging a clean re-upload.
Examples
Protect a graphic
Input
logo.png + "© EditSafely" tiled at 30%
Output
logo.png covered in a faint diagonal watermark
About the Watermark a PNG tool
Watermark a PNG runs as plain JavaScript in your browser tab, with no server behind it. Overlay a translucent repeating text watermark onto a PNG. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's PNG Tools section, 108 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 4 settings, including Watermark text, Opacity (%), Font size (px) and Layout, and the result refreshes the moment you change one. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Watermark a PNG free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Watermark a PNG accept?
It accepts PNG images. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.