Free Online Developer Tools
JSON formatters, hash generators, encoders, converters, and more — 50+ tools for developers. Everything runs client-side.
43 free tools · No sign-up required
CSV to JSON
Parse CSV files and convert them into formatted JSON arrays. Free and fast browser-based tool.
Use Free →JSON to XML
Convert JSON objects into valid XML tags instantly. Free developer utility.
Use Free →XML to JSON
Parse XML documents and convert them to readable JavaScript JSON objects. Free and private.
Use Free →JSON to YAML
Convert JSON syntax to highly readable YAML format. 100% free client-side tool.
Use Free →YAML to JSON
Convert YAML configurations back to strict JSON format online. Free and private.
Use Free →TSV to JSON
Convert Tab-Separated Values (TSV) into JSON arrays instantly. Free browser tool.
Use Free →JSON to TSV
Convert JSON data into Tab-Separated Values (TSV) for spreadsheet programs. Free.
Use Free →URL Encoder / Decoder
Escape and unescape URL query strings safely in your browser. Free developer utility.
Use Free →Base64 Encoder
Encode text strings into Base64 format instantly. 100% private and free.
Use Free →Base64 Decoder
Decode Base64 strings back to readable text online securely.
Use Free →HTML Entities Encoder
Escape HTML characters like brackets and quotes to secure HTML entities. Free.
Use Free →HTML Entities Decoder
Unescape HTML entities back to standard text characters. Free browser tool.
Use Free →JWT Decoder
Decode the header and payload of a JWT (JSON Web Token) securely in your browser.
Use Free →MD5 Hash Generator
Generate 128-bit MD5 hashes from any text. Runs securely using Web Crypto API.
Use Free →SHA-1 Hash Generator
Generate 160-bit SHA-1 hashes instantly. Secure, private browser-based hashing.
Use Free →SHA-256 Hash Generator
Generate secure 256-bit SHA-256 cryptographic hashes online. Free and private.
Use Free →SHA-512 Hash Generator
Generate military-grade 512-bit SHA-512 hashes from text. 100% client-side.
Use Free →UUID v4 Generator
Generate cryptographically secure random UUIDs (Universally Unique Identifiers) instantly.
Use Free →JSON Formatter
Instantly parse and indent raw JSON data.
Use Free →JSON Minifier
Compress JSON payloads by stripping all whitespace and comments. Free developer tool.
Use Free →XML Formatter
Prettify and indent raw XML strings to make them beautifully readable. Free.
Use Free →CSS Minifier
Compress your CSS code for production deployment to improve load times.
Use Free →SQL Formatter
Make your SQL queries readable with proper indentation and capitalization.
Use Free →Color Converter
Convert colors between HEX, RGB, HSL, and CMYK formats instantly. Free web design tool.
Use Free →Timestamp Converter
Convert between Unix epoch timestamps and human-readable dates. Free developer tool.
Use Free →JSON Escape String
Securely escape text strings for valid injection into JSON payloads.
Use Free →JSON Unescape String
Parse escaped text strings back into readable human formatting.
Use Free →URL Query Parser
Extract the origin, pathname, and query parameters into a clean readable JSON object from any raw URL.
Use Free →ASCII to Text
Translate ASCII numeric codes into standard text characters.
Use Free →Snake to Camel Case
Instantly format variable names from snake_case to camelCase.
Use Free →Compare Code
Identify syntax changes and bug fixes by comparing two code snippets side-by-side.
Use Free →CSS Beautifier
Expand and format your minified CSS code to make it human-readable.
Use Free →HTML Beautifier
Make messy HTML readable by automatically indenting nested tags.
Use Free →JavaScript Beautifier
Restore readability to messy or minified JS code.
Use Free →String to Binary
Translate readable text into machine-level binary code.
Use Free →Binary to String
Translate binary code (0s and 1s) back into readable text.
Use Free →Hex to String
Decode hexadecimal strings into readable text.
Use Free →SHA256 Hash
Instantly compute the secure, irreversible SHA256 cryptographic hash of any text.
Use Free →MD5 Hash
Generate an MD5 checksum for your text strings.
Use Free →URL Extractor
Pull every hyperlink and URL out of a block of messy text or HTML.
Use Free →Domain Extractor
Strip away paths, queries, and protocols to get clean domain names from a list of URLs.
Use Free →Word to HTML
Paste your rich text and get clean, semantic HTML code.
Use Free →Random Alphanumeric
Create secure, random combinations of letters and numbers.
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