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JSON & Data
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Developer & QA Tools
A complete online toolbox for developers and testers — formatters, converters, generators, API testing, test data, test design and AI-powered QA. Free, fast and private.
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JSON & Data
JSON Formatter · JSON Validator · JSON Tree Viewer…
20 tools →Encoding
Base64 Encoder · Base64 Decoder · URL Encoder…
12 tools →Web
HTTP Status Code Lookup · HTTP Headers Parser · HTTP Header Builder…
21 tools →Database
SQL Formatter · SQL Minifier · SQL Query Validator…
8 tools →Security
JWT Decoder · JWT Generator · JWT Claims Analyzer…
16 tools →Formatting
Text Diff · Text Case Converter · Camel Case Converter…
19 tools →Utilities
Regex Tester · Regex Generator · Regex Explainer…
23 tools →API Testing
API Request Builder · API Endpoint Tester · REST API Tester…
22 tools →Test Data
API Test Data Generator · Test Data Factory · Fake User Generator…
31 tools →Test Design
Test Case Generator · Test Scenario Generator · Negative Test Generator…
19 tools →Validation
HTTP Status Analyzer · Cookie Analyzer · Cache Header Analyzer…
6 tools →Mocking
Mock JSON Generator · Mock API Response Generator · Mock HTTP Status Generator…
10 tools →Performance
Response Time Analyzer · Response Size Analyzer · HTTP Request Benchmark…
6 tools →Automation
OpenAPI → Test Cases · JMeter Test Data Generator · JMeter CSV Generator…
4 tools →Test Generation
AI Test Case Generator · AI Acceptance Criteria Generator · AI Requirement → Test Cases…
11 tools →Requirement Analysis
AI Acceptance Criteria Reviewer · AI Requirement Ambiguity Detector · AI Requirement Gap Analyzer…
4 tools →Bug Analysis
AI API Response → Potential Issues · AI Error Message Analyzer · AI Bug Title Generator…
7 tools →Test Optimization
AI Test Case Optimizer · AI Duplicate Test Case Detector · AI Test Coverage Analyzer…
3 tools →🔥
Popular tools
Generate Luhn-valid test card numbers (Visa, Mastercard, Amex, Mada-style, Discover) with expiry and CVV for payment form testing.
Test Data
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Turn a user story into professional, structured test cases (ID, title, type, priority, preconditions, data, steps, expected result) with Mutqan AI.
Test Generation AI New
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Minify JSON by removing whitespace to reduce payload size.
JSON & Data
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Generate fake company records with names, industries, registration numbers, VAT ids, domains and addresses.
Test Data
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Compare two texts line by line or word by word and highlight differences.
Formatting
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Decode JWT header and payload, inspect claims and check expiration — entirely in your browser.
Security
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Check several API health endpoints at once and get status, latency and a pass/fail summary.
API Testing
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One-stop factory for synthetic test data: users, customers, companies, addresses, numbers, dates and strings in JSON, CSV, SQL or XML.
Test Data New
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Generate structured test cases (id, title, preconditions, steps, expected result, priority) from a feature description and field list.
Test Design
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Look up any HTTP status code with its meaning, RFC reference and when to use it.
Web
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Discover edge cases and corner cases for a feature, API or form with Mutqan AI.
Test Generation AI
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One-stop factory for synthetic test data: users, customers, companies, addresses, numbers, dates and strings in JSON, CSV, SQL or XML.
Test Data New
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Turn a user story into professional, structured test cases (ID, title, type, priority, preconditions, data, steps, expected result) with Mutqan AI.
Test Generation AI New
Open tool
Developer
Browse →JSON & Data
- JSON Formatter
- JSON Validator
- JSON Tree Viewer
- JSON Diff
- JSON Minifier
- JSON Sorter
- JSON Escape / Unescape
- JSON Schema Validator
- JSON Schema Generator
- JSON Path Tester
- JSON Pointer Tester
- JSON to YAML
- YAML to JSON
- JSON to XML
- XML to JSON
- JSON to CSV
- CSV to JSON
- JSON Lines Formatter
- JSON Lines Validator
- JSON Flatten / Unflatten
Developer
Browse →Encoding
Developer
Browse →Web
- HTTP Status Code Lookup
- HTTP Headers Parser
- HTTP Header Builder
- User-Agent Parser
- URL Parser
- Query String Parser
- CORS Tester
- Redirect Checker
- Content-Type Validator
- MIME Type Lookup
- IP Address Parser
- API Header Builder
- API Query Parameter Builder
- API Payload Builder
- REST Request Generator
- cURL Generator
- cURL Parser
- OpenAPI Viewer
- OpenAPI Validator
- OpenAPI Formatter
- Swagger JSON Formatter
Developer
Browse →Database
Developer
Browse →Security
Developer
Browse →Formatting
- Text Diff
- Text Case Converter
- Camel Case Converter
- Snake Case Converter
- Kebab Case Converter
- Pascal Case Converter
- String Length Counter
- Word Counter
- Character Counter
- XML Formatter
- XML Validator
- JavaScript Formatter
- JavaScript Minifier
- HTML Formatter
- HTML Minifier
- CSS Formatter
- CSS Minifier
- Markdown Formatter
- YAML Formatter
Developer
Browse →Utilities
- Regex Tester
- Regex Generator
- Regex Explainer
- Lorem Ipsum Generator
- Random String Generator
- Timestamp Converter
- Unix Timestamp Converter
- Date Difference Calculator
- Date Calculator
- Timezone Converter
- ISO 8601 Converter
- Cron Expression Generator
- Cron Expression Explainer
- Cron Expression Validator
- UUID Generator
- ULID Generator
- Number Base Converter
- Decimal / Binary / Hex Converter
- Color Converter
- HEX / RGB / HSL Converter
- Random Number Generator
- Percentage Calculator
- Byte / KB / MB / GB Converter
QA & Testing
Browse →API Testing
- API Request Builder
- API Endpoint Tester
- REST API Tester
- GraphQL Query Tester
- SOAP Request Tester
- WebSocket Tester
- API Health Checker
- API Response Analyzer
- API Response Comparator
- API Response Validator
- API Header Validator
- API Payload Generator
- API Status Code Simulator
- API Authentication Tester
- API Schema Validator
- Webhook Tester
- Webhook Inspector
- HTTP Request Inspector
- Request Header Inspector
- Request Body Inspector
- Webhook Payload Formatter
- Webhook Signature Analyzer
QA & Testing
Browse →Test Data
- API Test Data Generator
- Test Data FactoryNew
- Fake User Generator
- Fake Customer Generator
- Fake Employee Generator
- Fake Company Generator
- Fake Address Generator
- Saudi Address Test Data
- Jordanian Address Test Data
- Fake Phone Number Generator
- Fake Email Generator
- Fake Name Generator
- Test IBAN Generator
- Test Credit Card Generator
- Date Test Data Generator
- Date Range Generator
- Random Number Dataset Generator
- Decimal Dataset Generator
- Negative Number Dataset Generator
- Boundary Number Dataset Generator
- Random String Dataset Generator
- Special Character Dataset Generator
- Unicode Dataset Generator
- Arabic Test Data Generator
- Hindi Test Data Generator
- Multilingual Test Data Generator
- Large JSON Dataset Generator
- CSV Dataset Generator
- XML Dataset Generator
- SQL Dataset Generator
- Nested JSON Generator
QA & Testing
Browse →Test Design
- Test Case Generator
- Test Scenario Generator
- Negative Test Generator
- Positive Test Generator
- Edge Case Generator
- Boundary Value Generator
- Validation Test Generator
- Equivalence Partition Generator
- Boundary Value Analysis
- Decision Table Generator
- State Transition Generator
- Pairwise Testing Generator
- Risk-Based Test Generator
- Regression Scenario Generator
- Acceptance Criteria Generator
- User Story → Test Cases
- User Story → Test Scenarios
- Requirements → Test Cases
- Requirements → Test Scenarios
QA & Testing
Browse →Validation
QA & Testing
Browse →Mocking
QA & Testing
Browse →Performance
QA & Testing
Browse →Automation
AI QA
Browse →Test Generation
- AI Test Case GeneratorAINew
- AI Acceptance Criteria GeneratorAI
- AI Requirement → Test CasesAI
- AI Requirement → Test ScenariosAI
- AI API Specification → Test CasesAI
- AI Negative Scenario GeneratorAI
- AI Edge Case GeneratorAI
- AI Risk-Based Test GeneratorAI
- AI Regression Test GeneratorAI
- AI Test Data Recommendation GeneratorAI
- AI QA Checklist GeneratorAI
AI QA
Browse →Requirement Analysis
AI QA
Browse →Bug Analysis
AI QA
Browse →