Developer Tools
JSON formatters, encoders, decoders and dev utilities
Base64 Encoder & Decoder
Encode UTF-8 text to Base64 online or decode Base64 back to UTF-8 and plain text. Runs in your browser with no upload.
Try freeBulk URL Encode / Decode
Encode or decode many URLs at once. Paste a newline-separated list and the tool processes each line in parallel, preserving order and blank lines.
Try freeCode Screenshot
Create beautiful code snippet images with customizable themes.
Try freeColor Converter
Convert colors between HEX, RGB, HSL and CMYK formats.
Try freeCron Expression Parser
Parse cron expressions into human-readable schedules with next run times.
Try freeCSS Formatter / Minifier
Format, beautify and minify CSS code.
Try freeCSV to JSON Converter
Convert CSV data to JSON array format.
Try freeDiff Checker
Compare code or text with line-by-line diff and unified output.
Try freeHash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.
Try freeHMAC Generator
Generate HMAC signatures with SHA-1, SHA-256, SHA-384 and SHA-512.
Try freeHTML Entity Encode / Decode
Encode special characters to HTML entities or decode them back.
Try freeHTML Formatter / Beautifier
Format, beautify and minify HTML code.
Try freeHTML to JSX Converter
Convert HTML to JSX with automatic attribute conversion.
Try freeHTTP Status Code Reference
Searchable reference for all HTTP status codes with descriptions.
Try freeJavaScript Formatter / Minifier
Format, beautify and minify JavaScript code with Prettier-style defaults.
Try freeJSON Diff Viewer
Compare two JSON documents semantically. Detects added, removed and changed keys and array elements; ignores object key order.
Try freeJSON Formatter
Format, validate and minify JSON with syntax highlighting.
Try freeJSON to CSV Converter
Convert JSON arrays to CSV format with custom delimiters.
Try freeJSON to YAML Converter
Convert JSON to YAML format instantly.
Try freeJSONPath Evaluator
Run JSONPath queries against a JSON document and see the matched values. Supports child, index, slice, wildcard and recursive-descent operators.
Try freeJWT Decoder
Decode and inspect JWT tokens — header, payload and claims.
Try freeJWT Token Generator
Sign a JWT (HS256, HS384, HS512) from a JSON payload and shared secret. Runs entirely in your browser using the Web Crypto API.
Try freeMarkdown Preview
Write Markdown and see rendered HTML in a live split-pane preview.
Try freeMIME Type Lookup
Look up MIME types by file extension or search by type.
Try freeRegex Tester
Test regular expressions with live highlighting, matches and capture groups.
Try freeSQL Formatter
Format and beautify SQL queries with keyword uppercasing.
Try freeTailwind CSS Playground
Write HTML with Tailwind CSS classes and see live results. Use it as an online Tailwind editor and Tailwind play environment.
Try freeTOML to JSON Converter
Convert TOML configuration to JSON format.
Try freeUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
Try freeURL Encoder / Decoder
Online URL encoder and decoder for query strings, paths, and HTTP request values - percent-encodes characters with encodeURIComponent.
Try freeURL Parser
Break a URL into protocol, host, port, path, query parameters and hash with a structural view of every component.
Try freeUser Agent Parser
Parse user agent strings to identify browser, OS and device.
Try freeUUID Generator
Generate UUID v4 identifiers, single or in bulk.
Try freeUUID Version Detector
Identify the version (v1, v3, v4, v5, v6, v7, v8) and variant of any UUID and extract embedded timestamps.
Try freeXML Formatter / Validator
Format, beautify and validate XML with customizable indentation.
Try freeYAML to JSON Converter
Convert YAML to JSON format instantly.
Try free