Pad images with custom background letterbox or pillarbox bars to fit 16:9, 4:3, or 1:1 canvas aspect ratios.
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.
Configure your target values and parameters in the reactive interface.
Calculations, formatting, and analysis execute locally with zero server egress.
Copy generated artifacts, schemas, or calculation summaries with a single click.
Zero-egress companion tools in the Image Processing suite
Convert and compress WebP, PNG, and JPEG images locally with zero server uploads.
Clean, minify, and sanitize SVG files and markup locally.
Generate multi-size web, Apple Touch, and Android PWA favicons instantly.
