Hey Product Hunt! 👋 I built Watermark Assistant because I kept seeing people share ID photos online without any protection — for KYC verification, rental applications, job onboarding, etc. Adding a simple watermark like "For XX verification only" is a well-known best practice, but most tools require uploading your most sensitive photos to their servers. That felt wrong to me. So I built a Chrome extension that does everything locally in your browser — your photos never leave your device. Key highlights: • 100% local processing (zero server uploads) • Only 264KB — lightweight and fast • Supports 17 languages • 3-step workflow: add image → set watermark → save • Completely free I'd love to hear your feedback — especially on use cases I might be missing or features you'd find useful. Thanks for checking it out! 🙏

Watermark Assistant

Privacy-first watermarking for ID & doc photos

Privacy-first watermarking for ID & doc photos