Developer Tools
Essential developer tools for coding and debugging. Format JSON, validate code, generate hashes, decode JWTs, test regex patterns, and access professional development utilities. Built by developers, for developers.
Base64 Encoder / Decoder
Convert text to and from Base64. Supports URL-safe output and optional 76‑char MIME line wrapping.
URL Encoder / Decoder
Encode or decode URL-encoded strings. Use for query parameters, form data, and URLs. Supports component encoding and full URL encoding.
ASCII Converter
Convert text to and from ASCII decimal codes, hex, binary, Base64, and octal (e.g., "A" = 65 = 41 = 01000001). Fast, free, and privacy-friendly.
ASCII to Text Converter
Convert ASCII decimal codes to readable text instantly (e.g., 65 = 'A' or 72 101 108 108 111 → Hello). Free online ASCII to text converter for developers.
Text to ASCII Converter
Convert text to ASCII decimal codes instantly (e.g., 'A' = 65 or Hello → 72 101 108 108 111). Free online text to ASCII converter for developers.
ASCII to Hex Converter
Convert ASCII text to hexadecimal instantly (e.g., 'A' = 41). Free online ASCII to hex converter for developers.
Hex to ASCII Converter
Convert hexadecimal to ASCII text instantly (e.g., 41 = 'A'). Free online hex to ASCII converter for developers.
ASCII to Binary Converter
Convert ASCII text to binary instantly (e.g., 'A' = 01000001). Free online ASCII to binary converter for developers.
Binary to ASCII Converter
Convert binary to ASCII text instantly (e.g., 01000001 = 'A'). Free online binary to ASCII converter for developers.
ASCII to Decimal Converter
Convert ASCII text to decimal codes instantly (e.g., 'A' = 65). Free online ASCII to decimal converter for developers.
Decimal to ASCII Converter
Convert decimal codes to ASCII text instantly (e.g., 72 101 108 108 111 → Hello). Free online decimal to ASCII converter for developers.
ASCII to String Converter
Convert ASCII decimal codes to a string instantly (e.g., 65 = 'A'). Optionally output as a JSON string. Free online ASCII to string converter for developers.
String to ASCII Converter
Convert a string to ASCII decimal codes (escape-aware) instantly (e.g., 'A' = 65). Free online string to ASCII converter for developers.
ASCII to Base64 Converter
Convert ASCII text to Base64 instantly (e.g., 'Hello' = SGVsbG8=). Free online ASCII to Base64 converter for developers.
Base64 to ASCII Converter
Convert Base64 to ASCII text instantly (e.g., SGVsbG8= = 'Hello'). Free online Base64 to ASCII converter for developers.
ASCII to Octal Converter
Convert ASCII text to octal instantly (e.g., 'A' = 101). Free online ASCII to octal converter for developers.
Octal to ASCII Converter
Convert octal to ASCII text instantly (e.g., 101 = 'A'). Free online octal to ASCII converter for developers.
JSON Formatter
Format, validate, and minify JSON. Beautify JSON with customizable indentation or compress it to a single line.
XML Formatter
Format, validate, and minify XML. Beautify XML with customizable indentation or compress it to a single line.
JSON Validator
Validate JSON syntax instantly. Check if your JSON is valid, find errors with precise location information, and get detailed feedback. Perfect for debugging API responses and configuration files.
Regex Tester & Explainer
Test and debug regular expressions with live match highlighting, flag testing, and detailed explanations. Perfect for learning regex and debugging patterns.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text. Perfect for checksums, data integrity verification, and cryptographic operations.
UUID Generator
Generate UUID v4 (random UUIDs) instantly. Generate single or multiple UUIDs for databases, APIs, and distributed systems. Perfect for unique identifiers.
GUID Generator
Generate GUIDs (also called UUIDs) v4 instantly. Perfect for Windows development, .NET applications, COM components, and Microsoft technologies. Generate single or multiple GUIDs with Windows format support.
UUID / GUID Validator
Validate UUIDs and GUIDs – Check Format, Version & Structure. Check if your UUIDs/GUIDs are valid, detect their version, and get detailed validation feedback. Perfect for data validation, API testing, and debugging.
Password Hash Generator
Generate secure password hashes using Argon2id, bcrypt, scrypt, and PBKDF2. Configure memory cost, iterations, and other parameters for optimal security.
Timestamp Converter
Convert Unix timestamps (seconds or milliseconds) to human-readable dates and vice versa. Supports multiple timezones, ISO 8601, RFC 2822, and more formats.
Cron Expression Parser
Parse cron expressions into human-readable descriptions and visualize next run times in a calendar. Perfect for cron expression troubleshooting and understanding.
JWT Decoder
Decode JSON Web Tokens (JWTs) into their component parts: header, payload, and signature. Perfect for debugging authentication tokens and verifying token contents.
User Agent Parser
Parse user agent strings into their component parts: browser, operating system, device type, and more. Perfect for debugging user agent strings and verifying user agent contents.
Markdown to HTML Converter
Convert Markdown to HTML. Perfect for converting Markdown to HTML for use in websites, blogs, and other content.
CRC32 Calculator
Generate quick CRC32 checksums for text and files. Perfect for data integrity verification, file checksums, and error detection.
.env File Validator
Validate .env configuration files for syntax errors, security issues, and best practices. Privacy-first: all validation happens in your browser.
SQL Formatter
Format and beautify SQL queries with syntax highlighting. Clean up messy SQL, customize indentation, and improve code readability.
ASCII Table
View the complete ASCII character table with decimal, hexadecimal, octal, binary, HTML entity, and character representations for all 256 ASCII/Extended ASCII characters. Perfect for developers and programmers.
Browser Dimensions
View your browser viewport, window, and screen dimensions in real time. Perfect for responsive design, breakpoint testing, and CSS media queries. Updates as you resize.
HTML Entity Encoder / Decoder
Encode or decode HTML entities instantly. Convert < > & " ' to < > & " ' or decode named and numeric entities. Optional non-ASCII encoding. Free, privacy-focused, 100% client-side.