Image Watermark
Add a text or image watermark to any photo — control opacity, position, and rotation, all in your browser
Text or image watermark
Files stay on your device
Runs in browser
How does the watermark tool work?
Convertly draws your watermark directly onto a canvas element in your browser using the Canvas API — no server involved. Pick text or a logo image, adjust opacity and position, then download the result instantly.
Why add a watermark?
Watermarks protect your photos from unauthorized use and assert your brand identity. Our tool keeps your originals private — nothing is ever uploaded.
Is it safe to process my files here?
Yes. Convertly uses a Zero Upload Architecture — your files are processed entirely inside your browser. Nothing is ever sent to a server. Your files stay on your device at all times.