Image Watermark Tool

Features:

• Pure front-end processing, images are not uploaded to the server, ensuring privacy and security
• Supports custom watermark text, color, opacity, size, and spacing
• Watermark automatically tiles to cover the entire image, preventing cropping
• Adjustable rotation angle for diagonal watermark effects
• Real-time preview, what you see is what you get

Use Cases:

• Add "For XX Use Only" watermark to ID cards, passports, and other documents to prevent misuse
• Add confidential labels to contracts and financial reports
• Add brand or copyright information to product images
• Add "For Testing Only" or similar marks to test images

Tips:It is recommended to use low opacity (10%-30%) and moderate font size to provide protection without affecting image recognition. Smaller watermark spacing improves protection but may reduce image clarity.