Generate custom placeholder images, mockup graphics, and SVG Data URIs.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Select standard presets (OpenGraph, Banner, Square) or enter custom width/height.
Set overlay text label, background color, text color, and grid toggle.
Copy the SVG Data URI directly into your HTML/CSS or download the PNG image.
Yes, the copied data URI can be pasted directly into <img src='data:image/svg+xml...'> without hosting an image file.
Zero-egress companion tools in the Generators suite
Generate secure, URL-friendly 21-character NanoIDs with custom alphabet dictionaries.
Generate next-generation collision-resistant CUID2 strings for distributed databases.
Generate Luhn Modulo-10 valid mock credit card numbers for billing sandbox QA.
Generate RFC 4193 Unique Local IPv6 addresses (`fd00::/8`) and /64 subnets.
