ID Watermark

Add text watermarks to images. Supports custom text, opacity, rotation, position, tile mode, and batch. 100% private & local.

ID Watermark is a Chrome extension that adds fullscreen privacy watermarks to sensitive identity document images (ID cards, passports, driver's licenses, business certificates, etc.), helping users prevent identity theft when submitting digital copies to third parties. Key Features Identity Theft Prevention — Overlay custom, repetitive text (e.g., "For Company Name Verification Only") across the entire document image, making it difficult for scammers to reuse the image for unauthorized purposes. 100% Local Processing — All watermarking happens locally in your browser using HTML5 Canvas. Your images are never uploaded to any server. High Customization — Freely customize watermark text, color, size, opacity, rotation, and density with real-time preview before downloading the secured image.