Code Quality & Formatting
Tools to ensure clean, consistent, and error-free code
Code Formatters
JavaScript/TypeScript Formatter
Beautify and standardize your JavaScript/TypeScript code with consistent indentation, semicolons, and quote styles. Supports ES6+ syntax, JSX, and TypeScript features.
HTML/CSS/SCSS Pretty Printer
Format HTML documents with proper indentation and attribute wrapping. Clean CSS/SCSS with consistent spacing, nesting, and vendor prefix organization.
Linters & Validators
JSON Validator & Formatter
Validate JSON documents against RFC 8259 specification with detailed error reporting. Format with customizable indentation (2, 4 spaces or tabs).
Markdown Linter
Check Markdown files for common issues like broken links, improper heading hierarchy, and inconsistent formatting. Supports CommonMark and GitHub Flavored Markdown.
API Development Utilities
Everything you need to build, test and debug APIs
REST API Tools
HTTP Request Builder
Compose and send HTTP requests with support for all methods (GET, POST, PUT, DELETE, etc.). Includes headers editor, query parameters, and request body with syntax highlighting.
cURL Command Generator
Convert browser requests to cURL commands with all headers and parameters included. Supports generating commands for PowerShell and HTTPie as well.
GraphQL & WebSocket
GraphQL Query Explorer
Interactive GraphQL playground with schema introspection, query autocompletion, and variable support. Visualize query execution with response timing metrics.
WebSocket Client
Connect to WebSocket endpoints and send/receive messages with full logging. Supports JSON formatting and message history.
Performance & Optimization
Tools to analyze and improve your application performance
Web Performance
Page Speed Analyzer
Comprehensive website performance metrics including Time to First Byte (TTFB), First Contentful Paint (FCP), and Largest Contentful Paint (LCP). Waterfall charts for resource loading.
Bundle Size Analyzer
Upload your JavaScript bundles to visualize composition and identify large dependencies. Tree-shaking recommendations and code-splitting suggestions.
Database & Query
SQL Query Analyzer
Analyze SQL queries with execution plan visualization. Index usage recommendations and performance tuning suggestions for MySQL, PostgreSQL, and SQLite.
NoSQL Query Optimizer
MongoDB query analysis with index usage statistics and performance recommendations. Visualize query execution paths and document scanning.
Data Conversion & Transformation
Convert between formats and transform data efficiently
Data Format Converters
JSON ⇄ XML Converter
Bi-directional conversion between JSON and XML with customizable formatting options. Preserves data structure and handles attributes/namespaces.
CSV ⇄ JSON Converter
Convert between CSV and JSON with options for headers, delimiters, and nested structures. Handle large datasets with streaming processing.
Code & Content Transformation
SQL Query Converter
Convert SQL queries between different dialects (MySQL ⇄ PostgreSQL ⇄ SQLite). Handle syntax differences, function names, and LIMIT/OFFSET variations.
Markdown ⇄ HTML Converter
Convert between Markdown and HTML with support for tables, code blocks, and embedded content. Clean HTML to Markdown conversion with customizable options.
Security & Authentication
Tools to secure your applications and data
Encryption & Tokens
JWT Debugger
Decode and verify JSON Web Tokens with header, payload, and signature validation. Supports HS256, RS256, and other common algorithms.
Encryption/Decryption Tool
Encrypt and decrypt text using AES, RSA, and other common algorithms. Generate key pairs and test encryption workflows.
Web Security
CORS Configuration Tester
Test Cross-Origin Resource Sharing (CORS) headers and behavior. Simulate requests from different origins to verify access control settings.
Security Headers Analyzer
Check website security headers (CSP, HSTS, X-Frame-Options, etc.) with recommendations for improving security posture.