Development

Parse and display named capture groups from regex patterns

Development

Parse User Agent strings to extract browser, OS, device, and engine information

Development

Extract and analyze meta tags, Open Graph, Twitter Cards, and structured data from web pages

Development

Convert structured service logs into Mermaid or PlantUML sequence diagrams, with optional latency and error annotations

Network

Dissect the HTTP/3 over QUIC handshake byte-by-byte. Visualise the 1-RTT fresh handshake, session-ticket resumption, and 0-RTT early-data scenarios, with sequence diagrams, per-packet field layouts, the Retry packet, and a side-by-side comparison against TCP + TLS 1.3. Built for interview prep, protocol learning, and performance engineering.

Development

An in-browser GraphQL client: write queries and variables, send them to any GraphQL endpoint, and inspect formatted JSON results or error arrays — perfect for iterating on schemas during development

Development

A lightweight in-browser HTTP client (mini Postman): send GET/POST/PUT/DELETE requests with custom headers and body, inspect status, headers, timing, and formatted response — all from your browser

Network

Visualize the geographic location, network (ASN/ISP), timezone, and security posture of any IP address as a rich card report

Development

Convert between natural-language durations and ISO 8601 durations (PnYnMnDTnHnMnS) in both directions with validation of edge cases

Development

Convert JSON data into C# classes with PascalCase properties, JsonPropertyName attributes, and nested type inference

Development

Convert JSON data into Go struct definitions with json struct tags, exported PascalCase fields, and nested type inference

Development

Upload any binary file and inspect it as a classic hex dump with offset, hex bytes, and ASCII columns (read-only)