Ferrax, a browser-based network toolbox

Field notes

The toolkit separates operational checks from format conversion and structured-string parsing rather than presenting one undifferentiated utility page. Its network coverage includes email-authentication records, certificate chains, security and caching headers, redirect status codes, registry data, and time-to-first-byte measurements. The propagation checker compares results from 21 public resolvers with the authoritative answer, while the color converter includes contrast ratios and several modern CSS color spaces. The homepage shows no account or payment requirement.