Web & API

Convert curl commands into executable code for JavaScript (fetch), Python (requests), Node.js (axios), Go, and PHP.

Decompose, inspect, and analyze URLs into protocol, host, port, path segments, query parameters, and hash fragments.

Parse URL query strings into formatted JSON objects, or serialize structured JSON objects back into configurable query strings.

Calculate IPv4 and IPv6 subnet ranges, network addresses, broadcast addresses, subnet masks, and usable host counts.

Convert IPv4 addresses between dotted-decimal, 32-bit integer, hexadecimal, binary, and octal notations.

Parse, analyze, and format raw HTTP request and response headers with security, caching, and CORS diagnostics.

Look up, filter, and inspect HTTP response status codes, caching semantics, and RFC specifications.

Convert text, SVG markup, HTML, and JSON into inline RFC 2397 Data URIs, or decode existing Data URIs back to raw content.

Generate, parse, and validate standards-compliant robots.txt files with crawler directives, sitemaps, and RFC 9309 audits.

Generate, validate, and format standard sitemaps.org XML sitemaps with priorities, change frequencies, and URL audits.

Generate, parse, and audit HTML head meta tags, Open Graph (og:*), Twitter Cards, and canonical tags for social sharing and SEO.

Lookup standard IANA MIME types, Content-Type headers, and corresponding file extensions for web assets and APIs.

Parse User-Agent strings to extract browser, engine, OS, device, and architecture details, and inspect modern Client Hints.

Safely join URL path segments, deduplicate slashes, resolve relative path dots (../), and normalize clean API endpoints.