JSON Formatter
Format and beautify JSON data with syntax highlighting
DataAll Developer Tools
Browse our complete collection of 66 free developer utilities. All tools run in your browser for instant results and complete privacy.
JSON Validator
Validate JSON syntax and structure with precise error messages for faster API debugging
DataBase64 Encode
Encode text to Base64 format with UTF-8 safety for APIs, headers, and payloads
EncodingBase64 Decode
Decode Base64 data into readable text with safe UTF-8 handling and quick validation
EncodingJWT Decoder
Decode JWT tokens locally in your browser to inspect headers, claims, and token expiration
SecurityUUID Generator
Generate random UUID v4 identifiers instantly for database keys, events, and distributed systems
TextUUID v7 Generator
Generate RFC 9562 UUID v7 identifiers with time ordering and strong random entropy
TextTimestamp Converter
Convert Unix timestamps and human dates in seconds or milliseconds with timezone-aware output
Date TimeURL Encode
Encode text for safe URL usage with correct percent-encoding for query strings and paths
NetworkURL Decode
Decode URL-encoded text into readable characters for debugging links and query parameters
NetworkHash Generator
Generate SHA hashes for text and files to verify integrity and compare cryptographic fingerprints
SecurityRegex Tester
Test and debug regular expressions with real-time matches, groups, and edge-case validation
TextSQL Formatter
Format and beautify SQL queries with readable indentation for reviews, debugging, and optimization
DataCron Parser
Parse and explain cron expressions in plain language with scheduling context and next-run insight
Date TimeXML Formatter
Format and beautify XML documents with cleaner structure for integrations and schema troubleshooting
DataHTML Minifier
Minify HTML to reduce payload size and improve page delivery while preserving valid markup
TextCSS Minifier
Minify CSS to reduce file size and speed up rendering without changing visual output
TextMarkdown to HTML
Render Markdown to sanitized HTML with live preview for documentation and content workflows
TextJSON Minifier
Minify JSON by removing whitespace and formatting for smaller file sizes
Json ToolsJSON Diff
Compare two JSON objects and visualize differences with detailed change tracking
Json ToolsJSONPath Tester
Test and validate JSONPath expressions against JSON documents with real-time results
Json ToolsJSON to CSV
Convert JSON arrays to CSV format with configurable delimiters and headers
Json ToolsCSV to JSON
Convert CSV data to JSON format with automatic header detection and type inference
Json ToolsJSON to Types Generator
Generate TypeScript, Python dataclass, Go struct, and PHP DTO types from JSON
Json ToolsYAML Formatter
Format and beautify YAML documents with customizable indentation
DataYAML Validator
Validate YAML syntax and structure with detailed error reporting
DataYAML to JSON
Convert YAML documents to JSON format with structure preservation
DataJSON to YAML
Convert JSON data to YAML format with readable formatting
DataXML Validator
Validate XML documents with DTD and XSD schema support
DataURL Parser
Parse URLs into components and reconstruct from parts
NetworkQuery Param Analyzer
Analyze URL query params, detect duplicate keys, decode values, and flag suspicious encoding
NetworkHTML Encode/Decode
Encode and decode HTML entities for safe text display
EncodingUnicode Escape/Unescape
Escape and unescape Unicode characters for various programming contexts
EncodingBase64URL Encode/Decode
Encode and decode Base64URL format for URL-safe data transmission
EncodingJWT Generator
Generate JSON Web Tokens with multiple algorithm support and custom claims
Api ToolsJWT Signature Verifier
Verify JWT token signatures with key validation and expiration checking
Api ToolsHMAC Generator
Generate HMAC signatures using SHA-256, SHA-384, and SHA-512 algorithms
SecurityPassword Generator & Strength Analyzer
Generate strong passwords and analyze entropy, strength, and estimated crack time
SecurityWordPress Password Generator
Generate WordPress-ready passwords with compatibility and max-security presets
SecurityPHP Serialized to JSON
Convert PHP serialized payloads to JSON with safe object handling and detailed errors
DataPHP Serialized to CSV
Convert PHP serialized data to CSV with dot-path flattening for nested structures
DataPHP Serialized to YAML
Convert PHP serialized payloads to YAML for readable config and migration workflows
DataFile Checksum Calculator
Calculate file checksums using MD5, SHA-1, SHA-256, and SHA-512 algorithms
SecurityCurl Command Builder
Build curl commands with a visual interface for HTTP requests
Api ToolsCurl to Fetch Converter
Convert curl commands to JavaScript fetch() and vice versa
Api ToolsOpenAPI Viewer
View and explore OpenAPI 3.x specifications with interactive documentation
Api ToolsHTTP Header Inspector
Parse and analyze HTTP headers with explanations for common headers
Api ToolsJSON Schema Validator
Validate JSON documents against JSON Schema with precise path-based error reporting
Api ToolsJSON Schema to TypeScript
Generate TypeScript definitions from JSON Schema for strongly typed API contracts
Api ToolsCron Expression Generator
Generate and explain cron expressions with human-readable descriptions
Devops ToolsTimezone Converter
Convert times between timezones with daylight saving awareness
Date TimeKubernetes YAML Validator
Validate Kubernetes resource YAML with resource type detection
Devops ToolsTOML Validator & Formatter
Validate and format TOML documents with consistent local-only processing
Devops ToolsTOML to JSON Converter
Convert TOML and JSON between formats for configuration and automation workflows
Devops ToolsEnvironment File Formatter
Format and validate .env files with syntax highlighting
Devops ToolsEnv to JSON Converter
Convert .env files to JSON objects for tooling, inspection, and automation
Devops ToolsENV Diff Tool
Compare two .env files and detect missing keys and value differences
Devops ToolsCSS Specificity Calculator
Calculate CSS specificity as (a,b,c) with breakdown by selector
TextCSP Generator (Basic)
Build a valid Content-Security-Policy string from directive/source lists
SecurityPEM / Certificate Parser (Basic)
Parse PEM public keys and certificates with fingerprints and basic metadata
SecuritySmart Input Tool
Auto-detect JSON, Base64, JWT, or URL and route to decoded/formatted output
DataJSON Transform (jq-lite)
Transform JSON using a minimal DSL: select, map, filter, and rename
Json ToolsFake Data Generator (Basic)
Generate mock user/address/company datasets in JSON or CSV
DataHTML Accessibility Checker (Basic)
Check HTML snippets for missing alt text, labels, and basic ARIA naming issues
TextTool Pipeline (3-Step)
Chain up to 3 offline tools in sequence with type-compatibility checks
Devops ToolsSemver Comparator
Compare semantic version numbers and validate version ranges
Devops Tools