Every tool in this category is free — runs in your browser, files never leave your device.
Format messy JSON, validate with clear errors, or minify for production
Developer ToolsEncode text to Base64 or decode it back — UTF-8 safe with URL-safe variant
Developer ToolsEncode text for safe URLs or decode %-encoded strings back to readable text
Developer ToolsGenerate secure random UUID v4s — up to 1,000 at once with format options
Developer ToolsGenerate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text instantly
Developer ToolsDecode any JSON Web Token — see header, payload and expiry status instantly
Developer ToolsTest regular expressions live — highlighted matches, capture groups and flags
Developer ToolsConvert images to Base64 data URIs with ready-to-paste code snippets
Developer ToolsConvert JSON arrays to CSV with dot-notation flattening and correct quoting
Developer ToolsConvert CSV to clean JSON — quoted fields, auto delimiter, type detection
Developer ToolsConvert Markdown text format into clean, standard HTML code with a live preview
Developer ToolsConvert HTML tags and attributes into clean React JSX format with style object translations
Developer ToolsVisually generate HTML tables with custom rows, columns, padding, borders, and editable cells
Developer ToolsConvert JSON structures into clean YAML configuration format instantly
Developer ToolsConvert standard HTML markup into clean Markdown formatting recursively
Developer ToolsConvert YAML configuration text into clean JSON format instantly
Developer ToolsParse and validate YAML syntax configuration files for errors
Developer ToolsConvert numbers between binary, octal, decimal, hexadecimal, or custom bases (base 2 to 36)
Developer ToolsCompare two JSON blocks side-by-side and highlight structural or value differences
Developer ToolsValidate and check your JSON data client-side for structural errors
Developer ToolsCompress and minify your JSON data client-side to reduce file sizes
Developer ToolsFormat and explore your JSON structure client-side in a clean, human-readable hierarchy
Developer ToolsConvert structured JSON objects into clean XML tags client-side
Developer ToolsConvert XML markup into structured JSON data structures client-side
Developer ToolsConvert JSON structured schemas into TypeScript interface declarations client-side
Developer ToolsTest and query your JSON objects using dot notation path queries client-side
Developer ToolsConvert raw text into standard Base64 format client-side
Developer ToolsDecode standard Base64 string formatting back into raw text client-side
Developer ToolsEncode strings into URL-safe formats (percent-encoding) client-side
Developer ToolsDecode percent-encoded strings back into standard text formatting client-side
Developer ToolsCompress and minify your HTML documents by stripping extra white spaces and comments client-side
Developer ToolsFormat and pretty-print messy, minified HTML markup with consistent indentation client-side
Developer ToolsCompress and minify your CSS files client-side to improve website loading speeds
Developer ToolsFormat and pretty-print messy or minified CSS styles with consistent indentations client-side
Developer ToolsCompress and minify your Javascript scripts client-side to improve payload sizes
Developer ToolsFormat and pretty-print messy or compressed Javascript code client-side
Developer ToolsFormat and pretty-print raw database SQL queries client-side with consistent capitalization
Developer ToolsCompress and minify your database SQL queries client-side to strip newlines and comments
Developer ToolsGenerate custom regular expression patterns client-side based on simple matching conditions
Developer ToolsBrowse, search, and copy common Regular Expression patterns and expressions instantly
Developer ToolsDecode cron expressions into human-readable schedule summaries client-side
Developer ToolsGenerate recurring cron job schedule expressions client-side based on simple selectors
Developer ToolsGenerate signed JSON Web Tokens (JWT) client-side for testing and debugging authentication protocols
Developer ToolsGenerate Universally Unique Lexicographically Sortable Identifiers (ULID) client-side
Developer ToolsGenerate secure, URL-friendly unique string identifiers (NanoID) client-side
Developer ToolsGenerate MD5 message-digest cryptographic hashes client-side
Developer ToolsGenerate SHA-1 secure cryptographic hashes client-side
Developer ToolsGenerate SHA-256 secure cryptographic hashes client-side
Developer ToolsGenerate SHA-512 secure cryptographic hashes client-side
Developer ToolsGenerate CRC32 cyclic redundancy checksum hashes client-side
Developer ToolsGenerate secure Bcrypt cryptographic password hashes client-side
Developer ToolsVerify if a raw password matches a signed Bcrypt hash signature client-side
Developer ToolsGenerate Hash-based Message Authentication Codes (HMAC) client-side using Web Crypto
Developer ToolsGenerate Apache .htpasswd user credentials client-side using MD5 algorithm formatting
Developer ToolsWrite and preview formatted Markdown syntax client-side with real-time updates
Developer ToolsGenerate clean, aligned Markdown table syntax client-side by setting rows and columns
Developer ToolsConvert special characters into secure HTML entities client-side to prevent rendering execution
Developer ToolsDecode standard HTML entities back into their raw visual character formats client-side
Developer ToolsEscape quotes, newlines, and control characters to make text strings safe for JSON values
Developer ToolsConvert escaped control characters and quotes back into standard readable text client-side
Developer ToolsEscape quotes, backslashes, and control characters to make text strings safe for Javascript variables
Developer ToolsConvert escaped character strings back into human-readable raw text client-side
Developer ToolsEscape quotes and special characters client-side to make strings safe for SQL queries
Developer ToolsConvert binary base-2 numbers into decimal base-10 representations client-side
Developer ToolsConvert decimal base-10 numbers into binary base-2 representations client-side
Developer ToolsConvert hexadecimal base-16 numbers into decimal base-10 representations client-side
Developer ToolsConvert decimal base-10 numbers into hexadecimal base-16 representations client-side
Developer ToolsConvert binary base-2 numbers into hexadecimal base-16 representations client-side
Developer ToolsConvert hexadecimal base-16 numbers into binary base-2 representations client-side
Developer ToolsConvert octal base-8 numbers into decimal base-10 representations client-side
Developer ToolsConvert decimal base-10 numbers into octal base-8 representations client-side
Developer ToolsConvert raw text characters into space-separated decimal ASCII codes client-side
Developer ToolsDecode space-separated decimal ASCII codes back into readable text client-side
Developer ToolsConvert raw text characters into space-separated binary code bits client-side
Developer ToolsConvert space-separated binary bits back into readable text client-side
Developer ToolsInspect and decode text strings to view their underlying hexadecimal Unicode code points client-side
Developer ToolsCompare two code snippets client-side and highlight additions or deletions
Developer ToolsSearch and inspect HTTP response status codes client-side
Developer ToolsInspect and decode browser User Agent strings client-side to extract browser version and operating system details
Developer ToolsGenerate common mobile or desktop browser User Agent strings client-side for testing purposes
Developer ToolsLookup media type headers client-side based on file extension formats
Developer ToolsCalculate Unix file permission numeric octal values and symbols client-side using checklists
Developer ToolsGenerate standard .gitignore templates client-side for typical stacks
Developer ToolsValidate npm package.json syntax structures and keywords client-side
Developer ToolsGenerate standard npm package.json templates client-side step-by-step
Developer ToolsScan Dockerfile configurations client-side for syntax warnings and best practices
Developer ToolsFormat and pretty-print messy YAML strings with consistent indentations client-side
Developer ToolsValidate and verify XML data documents client-side for syntax warnings
Developer ToolsFormat and pretty-print messy or minified XML tags client-side
Developer ToolsCompress and minify XML documents client-side by stripping spaces and comments
Developer ToolsRender raw CSV text lists client-side into beautiful HTML tables
Developer ToolsConvert raw CSV lists client-side to downloadable Excel XML structures
Developer ToolsConvert tab-separated spreadsheet columns client-side to standard CSV lines
Developer ToolsConvert raw CSV lists client-side to standard database SQL INSERT statements
Developer ToolsOptimize and clean up SVG vector codes client-side to strip empty metadata
Developer ToolsConvert standard SVG markup code into React JSX component tags client-side
Developer ToolsCompress and minify SVG graphics client-side to strip newlines
Developer ToolsConvert raw SVG vector markups client-side into clean Base64 data URI image tags
Developer ToolsConvert raw Curl request commands client-side to modern Javascript fetch snippets
Developer ToolsFormat and pretty-print messy or minified GraphQL queries client-side
Developer ToolsCompress and minify GraphQL queries client-side to strip comments
Developer ToolsConvert environment configuration files (.env) client-side to structured JSON objects
Developer ToolsConvert structured JSON data objects client-side to standard environment variable configurations (.env)
Developer ToolsGenerate Base64 Data URIs client-side by uploading files directly in your browser
Developer ToolsConvert raw text strings client-side to standard RFC 4648 Base32 codes
Developer ToolsDecode standard RFC 4648 Base32 strings back into raw readable text client-side
Developer ToolsDeconstruct URL strings client-side into protocol, host, paths, and query arguments
Developer ToolsConvert browser URL query parameter strings client-side to structured JSON objects
Developer ToolsConvert structured JSON object properties client-side to URL-encoded query parameter strings
Developer ToolsConvert SQL INSERT queries client-side to structured JSON objects
Developer ToolsConvert your code snippets into beautiful, shareable card images client-side
Developer ToolsConvert text line break formats client-side between Windows (CRLF) and Unix (LF) styles
Developer Tools