FAQ
What watermarks can I add?
Either text (any wording, e.g. CONFIDENTIAL or DO NOT COPY) or an image such as a logo (PNG/JPG). You can set size, opacity, rotation (e.g. -45°) and position (center, tiled, or corners).
Can I use Japanese text?
Yes. The text is rendered with your browser's fonts and stamped as an image, so Japanese works as-is.
Are my files uploaded to a server?
No. Everything runs inside your browser on your own device — files are never sent anywhere. There are no ads, and the tools even work offline after the page loads.
Is it free? Do I need an account?
Yes, completely free. No sign-up, no login, and no usage limits.