Are my photos uploaded to a server?

No. Online Watermark processes everything in your browser using the HTML5 Canvas API. Your photos never leave your device, even on the Pro plan.

Do I need to create an account?

Yes — accounts are free and let us track your monthly quota and save your watermark configurations. Email and password is enough, we don't ask for anything else.

What's the difference between Free and Pro?

Free plan: 10 exports per month, output capped at 1080p, a small Online Watermark footer is added. Pro plan: unlimited exports, original resolution preserved (4K/8K/RAW), no footer.

Can I cancel my Pro subscription anytime?

Yes. You can cancel from your account at any moment. You'll keep Pro access until the end of your current billing period.

What image formats are supported?

Input: JPEG, PNG, WebP, AVIF, TIFF, HEIC/HEIF, BMP, and most raw camera formats (CR2, NEF, ARW, DNG). Output: JPEG, PNG or WebP at the quality you choose.

What's the diagonal tiled watermark?

A pro-grade protection pattern: your logo or text is repeated diagonally across the entire image, like the watermarks on iStock or Getty previews. It makes the photo unusable without removing the watermark.

Not yet. Online Watermark is currently a browser-only tool. If you have a use case for an API, drop us a line.

Online Watermark — Free Online Watermark Tool for Photos & Images

Online Watermark — Free Online Watermark Tool Online Watermark is a free professional tool to add logo and text watermarks to your photos and images, in bulk, directly in your browser. Please enable JavaScript to use the application. Features: bulk watermarking, logo watermark, text watermark, diagonal tiled pattern, ZIP download, JPEG / PNG / WebP / AVIF support, 100% client-side processing, no upload required.