Browse our complete set of online tools to improve your development efficiency
Format and validate JSON data for improved readability and debugging
Test and debug regular expressions with instant match results
Browser-based serial debugging tool - no download required, real-time monitoring via Web Serial API
Online SQL code beautifier and formatter with support for multiple database dialects
Generate MyBatis configuration files from table structure, including XML Mapper, Entity and Mapper interface
Generate random test data INSERT statements from table structure with primary and foreign key support
Parse, format, and visualize CSV data with customizable delimiters and export to JSON
Convert CSV data to SQL CREATE TABLE and INSERT statements for multiple databases
Convert CSV/JSON data to SQL DDL CREATE TABLE statements with MySQL, PostgreSQL support and auto data type inference
Compress or beautify HTML code, remove whitespace and comments to optimize file size, or format code for readability
Compress or beautify CSS code, remove whitespace and comments to optimize file size, or format code for readability
Compress or beautify JavaScript code, remove whitespace and comments to optimize file size, or format code for readability
Format and validate XML data with syntax highlighting
Format, validate YAML data and convert to JSON with syntax highlighting and multiple format options
Online Protocol Buffers encoder/decoder. Parse .proto schemas, encode JSON to binary, or decode binary to JSON
Quickly encode and decode Base64 strings, supporting both text and file conversion
Convert between JSON and CSV formats with nested object flattening and custom delimiter support
Convert between JSON and YAML formats with custom indentation and flow/block style support
Convert between Unix timestamps and human-readable date/time
Calculate days between dates, add/subtract days, calculate age, and count business days
Convert between binary, octal, decimal, and hexadecimal number systems with custom base support (2-36)
Convert images to Base64 encoding, supporting PNG, JPG, GIF, SVG, WebP formats, generate Data URI and CSS backgrounds
Convert time between any timezone worldwide with live updates, meeting planner, and automatic DST handling
CSV data processing toolkit with sort, dedupe, delimiter conversion, column extraction, transpose, and validation
JSON toolkit with compare, schema validation, JSONPath query, key sorting, flatten/unflatten
Generate MD5 and MD4 hash values for text or files with multiple output formats
Online SHA hash generator supporting SHA-1, SHA-256, SHA-384, SHA-512 algorithms
Securely encrypt and decrypt text using AES algorithm
Decode, verify, and generate JSON Web Tokens with support for multiple signing algorithms
Generate HMAC authentication codes with MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3, and RIPEMD-160 algorithms
Use RSA asymmetric encryption for public key encryption, private key decryption, digital signing and verification
Encrypt and decrypt using DES and 3DES algorithms with multiple modes and padding options
Fast symmetric block cipher with variable key length (32-448 bits), designed by Bruce Schneier
AES finalist symmetric cipher with 128-bit blocks and 128/192/256-bit keys, designed by Bruce Schneier
Generate BLAKE2b, BLAKE2s, and BLAKE3 hashes for text and files, fast and secure hashing algorithms
Generate 512-bit Whirlpool hashes using Whirlpool-0, Whirlpool-T, and Whirlpool ISO standard algorithms
Generate Snefru-128/256 hashes for text and files, early cryptographic hash function by Ralph Merkle
Generate HAS-160 hashes, Korean cryptographic standard for KCDSA digital signatures
Extremely fast non-cryptographic hash supporting xxHash32, xxHash64, xxHash3, and xxHash128
Generate SHA3-224/256/384/512 and Keccak hashes with WebAssembly acceleration, used in Ethereum
High-performance non-cryptographic hash function for hash tables, Bloom filters, and data partitioning
Fowler-Noll-Vo hash function with FNV-1 and FNV-1a variants, used in DNS, hash tables and data structures
Generate GOST R 34.11-94 and Streebog (GOST R 34.11-2012) hashes, Russian national cryptographic standards
Generate and verify secure password hashes using Bcrypt, Scrypt, and Argon2 algorithms
Calculate CRC-8, CRC-16, CRC-32, CRC-64 checksums with support for Modbus, CCITT and other protocol standards
Chinese national standard cryptography tools supporting SM2 public key cipher, SM3 hash, and SM4 block cipher
Generate unique identifiers (UUID/GUID) with customizable formats
Generate placeholder text with multiple styles and HTML format
Generate custom QR codes for text, URL, WiFi, vCard, email, SMS and more
Generate professional barcodes in Code128, EAN-13, UPC-A, Code39 and more formats
Build, validate and explain cron expressions with visual interface
Convert colors between HEX, RGB, HSL, CMYK, YCbCr, Lab formats, generate color palettes, and check WCAG contrast
Professional color palette generator with color mixing, gradient creation, color schemes, and export to CSS/SCSS/JSON formats
Generate strong, secure random passwords with customizable length, character types, strength indicator, and batch generation
Generate realistic test data including names, emails, phones, addresses. Supports 12 locales and multiple output formats
Encode and decode URLs to ensure compliance and usability
Convert special characters to HTML entities with named, decimal, and hexadecimal formats to prevent XSS attacks
Escape and unescape strings between multiple formats including JavaScript, JSON, HTML, XML, CSV, SQL and more
Compare differences between two texts or files with side-by-side highlighted view
Text case conversion, supporting multiple formats
Comprehensive text processing toolkit with case conversion, find & replace, line operations and more
Comprehensive text manipulation toolkit with word counter, data extraction, split/join, line filter, prefix/suffix operations
Convert text between Hex, Binary, Unicode, ASCII, Base64, and many other encoding formats
Convert text encoding between UTF-8, GBK, Big5, Shift_JIS, ISO-8859, Windows codepages with auto-detection
Convert text to Morse code and decode Morse to text with audio playback and visual flash
CoderTools is a comprehensive collection of free online developer tools designed for modern software development. Whether you're formatting code, encrypting data, or converting between formats, our tools help you work faster and more efficiently.
All tools run entirely in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security. No server uploads, no data collection.
Access any tool instantly without downloading software or creating accounts. Our tools work on any modern browser across Windows, macOS, Linux, and mobile devices.
Each tool is built with attention to detail, following industry standards and best practices. From proper encoding to standard-compliant formatting, get results you can trust.
Built by developers for developers. Our interface is clean, efficient, and optimized for daily workflow. Keyboard shortcuts, dark mode, and customizable settings included.
Format, validate, and beautify JSON, XML, SQL, YAML, and more. Our code tools support syntax highlighting, validation, and conversion between formats. Perfect for debugging API responses, configuration files, and database queries.
Comprehensive cryptography toolkit including AES, DES, RSA, Blowfish, and Chinese SM algorithms. Generate MD5, SHA, BLAKE, and 20+ hash algorithms. Secure your data with industry-standard encryption methods.
Convert between Base64, Hex, Binary, and various text encodings. Transform JSON to CSV, XML to JSON, and handle character encoding conversions including UTF-8, GBK, and Shift_JIS.
Generate UUIDs, QR codes, barcodes, test data, and secure passwords. Create SQL from CSV, cron expressions from visual interfaces, and lorem ipsum text for mockups.
Compare text differences, convert case, escape/unescape strings, and perform regex testing. Our text tools handle everything from simple transformations to complex pattern matching.
Format and validate JSON/XML responses, encode/decode Base64 payloads, generate JWT tokens, and test regex patterns for input validation.
Format SQL queries, convert CSV to SQL INSERT statements, generate test data, and create MyBatis configuration files from table structures.
Generate password hashes, encrypt/decrypt test data, calculate checksums for file integrity, and verify HMAC signatures.
Minify HTML/CSS/JavaScript for production, convert images to Base64 for embedding, generate QR codes, and pick colors with accessibility checking.