Network & Web
URL parsers, HTTP status codes reference, query string tools.
Popular in Network & Web
URL Parser
Break down any URL into protocol, host, path, query, hash, and port components.
HTTP Status Code Explorer
Searchable reference for HTTP status codes 100–599 with names and meanings.
CIDR Calculator
Calculate the requested result instantly using browser-side logic.
IPv4 Subnet Calculator
Calculate the requested result instantly using browser-side logic.
IPv6 Subnet Calculator
Calculate the requested result instantly using browser-side logic.
IP Range Calculator
Calculate the requested result instantly using browser-side logic.
IP Address Converter
Convert supported input into the target format locally without uploading data.
All Network & Web
Query String Parser
Parse ?key=value query strings into an editable key/value table.
Query String Builder
Build URL query strings from editable key/value rows.
URL Builder
Assemble a complete URL from protocol, host, path, query, and hash fields.
MAC Address Formatter
Format and normalize MAC content for readability and consistency.
Port Number Reference
Provide a fast, privacy-first browser utility for port number reference.
CSP Header Generator
Generate production-ready csp header output directly in the browser.
CSP Policy Formatter
Format and normalize CSP content for readability and consistency.
Permissions Policy Generator
Generate production-ready permissions policy output directly in the browser.
CORS Header Builder
Generate production-ready cors header output directly in the browser.
Referrer Policy Generator
Generate production-ready referrer policy output directly in the browser.
robots.txt Generator
Generate production-ready robots.txt output directly in the browser.
Security.txt Generator
Generate production-ready security.txt output directly in the browser.
SRI Integrity Checker
Validate input locally, highlight errors, and provide actionable fixes.
Password Entropy Calculator
Calculate the requested result instantly using browser-side logic.
File Magic Number Checker
Validate input locally, highlight errors, and provide actionable fixes.
PEM Certificate Viewer
Inspect and understand the supplied data locally with a structured visual view.
X.509 Certificate Text Parser
Inspect and understand the supplied data locally with a structured visual view.
TLS Cipher Suite Reference
Provide a fast, privacy-first browser utility for tls cipher suite reference.
URLs, query strings, and HTTP status codes
Parse URLs, build query strings, and look up HTTP status meanings — all without leaving your browser.
URL tools
Break apart or assemble protocol, host, path, query, and hash.
Query strings
Parse and rebuild query parameters in a structured editor.
HTTP reference
Search status codes with plain-language explanations.