Our free Watermark Tool provides a professional, high-performance solution to overlay custom text or logo watermarks on your images client-side instantly with transparency directly within your browser. Engineered for maximum speed and absolute privacy, the tool operates entirely on the client side using secure local JavaScript processing—meaning your data never leaves your device and is never uploaded to any external server. Whether you are working on a desktop, tablet, or mobile phone, the responsive and premium interface delivers instant real-time results with zero wait times. Designed for daily productivity, it features fully configurable parameters, robust input verification, and offline capability to ensure a seamless, secure workflow.
Upload your source image file and your custom watermark image or text.
Position the watermark, set its opacity, size, rotation, or tiling settings.
Click to apply the watermark and download the signed image file.
Processes design vectors, extracts styling properties, and compiles canvas scales locally inside your web browser.
Adjust border curve dimensions, customize background CSS gradients, configure QR code scale factors, and choose canvas crop margins.
Resize, crop, and convert images locally. Absolutely no graphic files are uploaded to any server, ensuring 100% media confidentiality.