Image Watermark
Add a text watermark with position and opacity controls.
Drag & drop a file here, or browse
Your result will appear here. Processing happens entirely in your browser.
About Image Watermark
Add a text watermark with position and opacity controls. This utility processes files locally inside your browser using modern Web APIs (WebAssembly and Canvas). Your documents and images are never uploaded to any remote cloud server, providing total confidentiality for sensitive files.
Zero Server Upload
Files remain on your local disk at all times.
Unlimited Free Usage
No file size limits, paywalls, or daily caps.
Frequently Asked Questions
Are my files safe when using Image Watermark?
Yes, 100%. All processing runs locally inside your browser using client-side JavaScript and WebAssembly. Your files are never uploaded to any remote server.
Do I need to sign up or create an account to use Image Watermark?
No account registration, login, or subscription is required. Image Watermark is completely free and accessible immediately.
Are there any file size limits or usage caps?
There are no arbitrary server restrictions or daily caps. Since files process using your local device CPU and RAM, you can process documents as fast as your hardware allows.