API Tools Online - JWT Decoder, OAuth Inspector, REST Tester
Edi Viewer
View EDIFACT and X12 EDI messages in a readable format. Parse segments, show element descriptions, explore interchange structure. Browser-based, private.
Graphql Formatter
Format and beautify GraphQL queries, mutations, and schemas online. Validate syntax, customize indentation. Browser-based, no uploads, completely private.
Graphql Minifier
Minify GraphQL queries and mutations to reduce payload size. Remove whitespace and comments. Browser-based, instant compression.
Graphql To Json
Convert GraphQL queries to JSON AST representation. Visualize query structure, extract field selections. Browser-based parser.
Soap Header Extractor
Extract headers, body, and fault info from SOAP messages. Parse SOAP envelopes quickly. Browser-based XML analysis tool.
Soap Tester
Build and preview SOAP requests from WSDL operations. Generate request XML with proper envelope structure. Browser-based tool.
Soap Validator
Validate SOAP envelope structure and syntax. Check for well-formed XML, proper namespaces, and SOAP compliance. Browser-based.
Soap Formatter
Format and beautify SOAP XML messages instantly. Validate envelope structure, highlight namespaces. Free, private, works offline.
Wsdl To Json
Convert WSDL definitions to JSON format. Extract services, operations, and message schemas. Browser-based WSDL parser.
Wsdl Viewer
Parse and view WSDL web service definitions. See operations, bindings, ports, and messages. Free, private, works offline.
API Development and Debugging Tools
Modern APIs use tokens, JSON payloads, and complex authentication flows. Our browser-based tools make it easy to inspect, decode, and test API interactions without uploading sensitive credentials to external services.
JWT Token Decoding
JSON Web Tokens (JWT) consist of three base64-encoded parts: header, payload, and signature. Our decoder extracts and displays the header (algorithm, token type), payload (claims, expiration, user data), and verifies the signature structure — all without exposing your signing secret.
OAuth and OIDC Token Analysis
OAuth 2.0 access tokens and OpenID Connect ID tokens authorize API requests and authenticate users. Our analyzer displays scopes, claims, expiration times, and token metadata, helping debug authentication issues and verify security configurations.
API Response Formatting
API responses often arrive as minified JSON or XML. Our formatters beautify these responses for human inspection, making it easy to understand data structures, find specific fields, and debug API integrations.
Privacy for Sensitive Tokens
Tokens and credentials contain sensitive authorization data. Our tools process everything locally in your browser — your tokens, API keys, and response payloads are never transmitted to any external server.