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Useful HTTP & API Tools starting points

Jump into a common task, then use the full directory below for more specialized tools.

HTTP Request to cURL ConvertercURL to PHP ConverterHAR Request ExtractorAPI Request BuildercURL to Wget ConverterHTTP Request Parser
26 HTTP & API tools

HTTP & API Tools

Browser-local request composition, cURL/code conversion, HAR/header inspection and HTTP policy analysis with explicit network trust boundaries.

Compose → Convert → Inspect → Diagnose → Run / verify

Draft and normalize requests locally, hand them off to cURL or application code, inspect copied traffic, then reason about caching and CORS before you test the real endpoint. Direct browser requests remain subject to CORS and WebToolArc does not use a hidden proxy.

Compose & normalize

API Request BuilderBuild method, URL, params, auth, headers and body visually.cURL Command BuilderGenerate a terminal-ready cURL request.cURL Command ParserNormalize common cURL options and surface unsupported tokens.HTTP Request ParserInspect a raw HTTP/1.x request.

Convert & hand off

HTTP Request to cURL ConverterTurn raw HTTP into cURL.cURL to Python ConverterGenerate Python requests code.cURL to JavaScript Fetch ConverterGenerate Fetch API code.cURL to Axios ConverterGenerate Axios code.cURL to Go ConverterGenerate Go net/http code.cURL to Rust ConverterGenerate Rust reqwest code.

Inspect traffic & response metadata

HAR Request ExtractorExtract and filter requests from a local HAR capture.HTTP Header ParserParse copied request/response header blocks.HTTP Status Code LookupLook up registered status-code meaning.

Diagnose & generate policy

Cache-Control AnalyzerExplain cache directives with Age and validators.Cache-Control Header GeneratorBuild a Cache-Control response policy.CORS Policy AnalyzerEvaluate supplied CORS headers against one request scenario.CORS Header GeneratorBuild common CORS response headers.Content Security Policy GeneratorBuild a CSP header with broad-source warnings.HSTS Header GeneratorBuild Strict-Transport-Security text.

All HTTP & API Tools

HTTP & API Tools

cURL Command Builder

Build cURL requests in a compact live request workspace with query parameters, authentication, headers, body modes, shell output, sensitive-header warnings and advanced cURL flags.

HTTP & API Tools

cURL Command Parser

Parse cURL into a request-first summary with endpoint, method, query, headers, body, authentication clues, unsupported options and normalized JSON.

HTTP & API Tools

cURL to Python Converter

Convert cURL to readable Python requests code live with JSON-body detection, secret-header redaction, request metrics, copy and download controls.

HTTP & API Tools

cURL to JavaScript Fetch Converter

Convert common HTTP-oriented cURL commands into JavaScript Fetch API code.

HTTP & API Tools

HTTP Request Parser

Parse a raw HTTP/1.x request into method, target, version, headers, query, and body metadata.

HTTP & API Tools

HTTP Request to cURL Converter

Convert a raw HTTP/1.x request into a copy-ready cURL command.

HTTP & API Tools

HTTP Header Parser

Parse copied HTTP request or response headers locally while preserving repeated fields and malformed-line diagnostics.

HTTP & API Tools

HTTP Status Code Lookup

Look up HTTP status-code class and registered reason text using the current standards registry snapshot.

HTTP & API Tools

Cache-Control Header Generator

Build common Cache-Control response directives locally with freshness, shared-cache, stale and revalidation controls.

HTTP & API Tools

Content Security Policy Generator

Build a Content-Security-Policy header from common CSP fetch and navigation directives.

HTTP & API Tools

CORS Header Generator

Generate common CORS response headers locally for a known origin, method and credential policy.

HTTP & API Tools

HSTS Header Generator

Generate a Strict-Transport-Security header with max-age, subdomain, and preload-token controls.

HTTP & API Tools

cURL to PHP Converter

Convert common HTTP-oriented cURL commands into PHP cURL-extension code locally.

HTTP & API Tools

cURL to Java Converter

Convert common HTTP cURL commands into Java 11+ HttpClient code.

HTTP & API Tools

cURL to C# Converter

Convert common HTTP cURL commands into C# HttpClient code.

HTTP & API Tools

cURL to Go Converter

Convert common HTTP cURL commands into Go net/http code.

HTTP & API Tools

cURL to Ruby Converter

Convert common HTTP cURL commands into Ruby Net::HTTP code.

HTTP & API Tools

cURL to PowerShell Converter

Convert common HTTP cURL commands into PowerShell Invoke-WebRequest code.

HTTP & API Tools

cURL to Wget Converter

Convert common HTTP cURL commands into a Wget command where request semantics can be represented.

HTTP & API Tools

cURL to Axios Converter

Convert cURL to Axios in a compact live two-pane workspace with request metrics, secret-header redaction, copy and download controls.

HTTP & API Tools

cURL to Rust Converter

Convert common HTTP cURL commands into Rust reqwest starter code.

HTTP & API Tools

cURL to Swift Converter

Convert common HTTP cURL commands into Swift URLSession code.

HTTP & API Tools

API Request Builder

Compose HTTP API requests locally from method, URL, params, headers, auth and body, with cURL/raw HTTP/code export and optional direct fetch.

HTTP & API Tools

HAR Request Extractor

Extract and filter requests from a local HAR capture with obvious credentials and token-like query values redacted by default.

HTTP & API Tools

Cache-Control Analyzer

Analyze Cache-Control with Age, Expires, Date, ETag and Last-Modified context using browser-local standards-oriented checks.

HTTP & API Tools

CORS Policy Analyzer

Analyze supplied CORS response headers against a request origin, method, headers and credential mode without making a network request.

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