Watermark

Places a text or logo watermark on an image — your name, handle, or brand mark over a photo before it goes anywhere public. Position, size and transparency are adjustable, and everything renders in your browser.

How to use

1. Drop the photo to be watermarked.
2. Type the text, or load a logo image — PNG with transparency works best.
3. Set position, size and opacity; a corner at low opacity credits without ruining the shot.
4. Download the watermarked copy, keeping the clean original for yourself.

When you actually need this

• Crediting photography or artwork posted to social media.
• Marking product photos so competitors cannot lift them into their own listings.
• Branding portfolio images shared with prospective clients.
• Labelling preview versions delivered before payment clears.

Placement is the whole game

A corner watermark is polite but crops off in one move; a centred one survives cropping but competes with the subject. The practical compromise is semi-transparent text over a busy area of the image, where cloning it out takes real effort. A watermark deters casual reuse and asserts authorship — it does not technically prevent copying, so ship watermarked previews and keep originals until the moment calls for them. Logo files with transparent backgrounds sit far more naturally than white-boxed ones.

Related tools

FAQ

Are my photos uploaded to a server when I use Watermark?

No. Watermark reads the file with the browser's Canvas API and processes every pixel on your own device. The image never leaves your computer, which is why it still works if you go offline after loading the page.

Will Watermark reduce the quality of my image?

That depends on the setting you choose. JPEG and WebP are lossy, so a lower quality value means a smaller file and more visible artifacts; PNG is lossless and keeps every pixel exactly. Start around 80 percent quality — most photos stay visually identical at roughly a third of the original size.

Is there a file size or count limit?

There is no limit imposed by the site, because nothing is uploaded. The practical ceiling is your device's memory — very large files (over roughly 50 MP) may be slow on an older phone.