Image Watermark — Free Online

Add text watermark to images

Free, fast, and runs entirely in your browser — no signup, no upload to a server.

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Sources we checked for Image Watermark

• MDN — Canvas API — The browser API used for in-browser image processing.
• UPSC / SSC photo upload guidelines — Official Indian exam portals that enforce strict image size limits.
• MDN — image file type guide — Format-by-format comparison of JPEG, PNG, WebP and AVIF.
• MDN Web Docs — Mozilla's open reference for the browser APIs these tools run on.