HTTP Header Parser
Parsers & Inspectors
Parse raw HTTP headers into structured JSON.
Parsers & Inspectors
Parse HTTP headers, cookies, user agents, meta tags, regex, XPath, robots.txt, and sitemaps.
Extract structure from opaque strings: HTTP headers from a curl trace, cookies from Set-Cookie values, user-agent tokens, robots.txt rules, or regex matches against sample text.
Use these when integrating third-party APIs, auditing SEO metadata, or validating config files. All parsing runs in JavaScript on your machine.
- HTTP headers, cookies, and user-agent breakdown
- Regex and XPath testing with live results
- Meta tags, robots.txt, and sitemap validation
Tools in this category
17URL Parser
Parsers & Inspectors
Parse a URL into protocol, host, path, query params, and hash.
Query String Builder
Parsers & Inspectors
Parse query strings from URLs or build them from JSON key/value pairs.
JSONPath Tester
Parsers & Inspectors
Query JSON documents with JSONPath expressions and inspect matching nodes.
Data URI Parser
Parsers & Inspectors
Decode a data: URI into its media type, encoding, and payload.
UUID & ULID Inspector
Parsers & Inspectors
Decode a UUID or ULID to reveal its version, variant, and embedded timestamp.
Cookie Parser
Parsers & Inspectors
Parse Cookie header strings into key-value pairs.
User-Agent Parser
Parsers & Inspectors
Parse User-Agent strings to detect browser and OS.
Open Graph Preview
Parsers & Inspectors
Extract Open Graph and meta tags from HTML.
Regex Tester
PopularParsers & Inspectors
Run JavaScript regex against sample text with live match highlighting.
XPath / CSS Selector Tester
Parsers & Inspectors
Test XPath expressions and CSS selectors against HTML.
Robots.txt Checker
PopularParsers & Inspectors
Check robots.txt syntax — catch missing User-agent lines and typos before deploy.
sitemap.xml Validator
Parsers & Inspectors
Validate sitemap.xml structure and URL entries.
HTML Entity Lookup
Parsers & Inspectors
Search HTML character entities by name, code, or symbol.
MIME Type Lookup
Parsers & Inspectors
Look up MIME types, file extensions, and content types.
IP Subnet Calculator
Parsers & Inspectors
Calculate network address, broadcast, and host range from IPv4 CIDR.
Meta Tags Generator
PopularParsers & Inspectors
Generate title, description, canonical, and Open Graph tags for your head.