Invisible Watermark vs EYN Tools

Invisible watermark app, is a unique and no network needed app. That can easily add some text like your signature on pictures. Other guys who will see your picture will never know there has invisible watermark on it. So what we can do: 1. Add customize text watermark; 2. Share the generate pictures to network; 3. Load previous or third part invisible watermark pictures, and check its original author. Note: it's better to use white background pictures to add watermark.

eyn-tools is a utility hub for everyday tasks: convert units and currencies, work with colors and images, generate secure passwords and IDs, inspect your network and device, and edit or analyze text—all in one place with a clean, consistent design. Convert & calculate Length, weight, volume, and more. Live currency rates. Percentage math, a standard calculator, word count, and age-from-date. Number formatting (scientific, engineering, locale). Binary, octal, decimal, and hex. Time zones with DST-aware conversion. Color & media Pick and convert colors (HEX, RGB, HSL, OKLCH). Pull palettes from photos. Crop and convert images, compress files, browse storage, and use on-device vision where available. Security & privacy-minded tools Hashing and encoding, local password strength checks, secure random data, AES encryption for text, and email validation—designed so sensitive work stays on your device when the tool allows it. Generators Passwords, passphrases, PINs, UUIDs, CUID2, NanoID, names, barcodes, fake sample data, Lorem-style placeholder text, and customizable QR codes. Text & developers Side-by-side diff, regex testing with matches and groups, Markdown preview, case conversion, timestamps, and a webhook tester for quick HTTP checks. Device & troubleshooting Battery and screen details, session clipboard history, geolocation with map context, mic test and voice notes, phone info, timers, and network tests—including advanced options for subscribers. Organized for speed Browse by category or see everything in one list. Jump back to what you use most without clutter. Some advanced capabilities are offered as eyn-tools Pro (optional subscription or lifetime purchase). Free tools remain available without a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://eyn.tools/privacy