Developer tools
28 free developer tools, all running in your browser.
.env File Generator
Generate .env files from key-value pairs with configurable quoting; verify the output with the parser used by your application.
.htaccess Redirect Builder
Generate Apache .htaccess rules for common redirects, HTTPS enforcement, and canonical URL routing; review and test before deployment.
ASCII Converter – Text to ASCII, Hex, Binary & Back
Convert text to ASCII codes and decode back in decimal, hex, binary, or octal — live, private, and 100% browser-based.
Binary Logic Gate Simulator
Simulate AND, OR, NOT, XOR, NAND, NOR, XNOR gates with interactive inputs and full truth tables.
Cron Expression Parser & Generator
Parse common five-field cron expressions and this tool's six-field, Quartz-style format. View a plain-language explanation and upcoming run times.
cURL Command Builder
Build and generate curl commands with a visual interface. Supports headers, authentication, request body, query parameters, and exports to multiple formats including PowerShell, HTTPie, and wget.
Dockerfile Generator
Generate a Dockerfile starting point for Node.js, Python, Go, Rust, Java, Ruby, PHP, .NET, or a static site.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes online from text or files — free, instant, and runs entirely in your browser.
HTML Decoder & Encoder
Encode special characters into HTML entities or decode HTML entities back into readable text instantly in your browser.
HTML Minifier — Fast, Safe Online HTML Compression
Compress and minify HTML instantly in the browser with safe defaults, optional inline minification, and a preview of byte savings.
HTTP Status Code Reference
A comprehensive guide to HTTP status codes with detailed explanations and triage tips.
INI File Viewer
Open and view INI configuration files online with sections, keys, values, and formatted configuration data directly in your browser.
JavaScript Minifier
Compress and optimize JavaScript source code by removing comments, reducing whitespaces, and streamlining boolean values safely client-side.
JSON Diff Viewer
Compare two JSON documents side by side with structural and character-level diffing.
JSON Flatten Tool
Flatten nested JSON into dot-notation keys and unflatten back with configurable array notation, delimiters, and array handling.
JSON Path Tester
Test JSONPath expressions against JSON data instantly. Evaluate, debug, and validate JSONPath queries with live results and error highlighting.
JSON Schema Validator
Validate JSON data against a JSON Schema to ensure structure, types, and constraints are correct
JSONL Viewer
Open and view JSONL and NDJSON files online. Inspect each JSON record, search data, and identify invalid lines directly in your browser.
JWT Decoder
Securely decode JSON Web Tokens (JWT) in your browser. View headers, payloads, and claims without sending data to a server.
Keycode Viewer
Show key code and key values for any keypress
MIME Type Checker
Detect, validate and analyze MIME types from file extensions or content headers with security risk assessment
PDF Analyzer
Inspect a PDF in your browser — version, structure, fonts, images, links, metadata, encryption, JavaScript, and attachments.
Regex Cheatsheet & Tester
Interactive regex reference with search, categories, and a live pattern tester. Copy tokens instantly and test patterns in your browser.
Regex Tester Online — Test, Debug & Validate Regex Instantly
Free online regex tester that runs 100% in your browser. Test patterns, highlight matches, inspect groups, preview replacements, and run multi-test suites for email, URL, and custom regex — no signup, no data upload.
SVG Optimizer
Minify and clean SVG markup to reduce file size while preserving visual quality. Remove metadata, comments, editor data, and optimize colors, paths, and IDs with configurable precision.
Tailwind CSS Class Reference
Interactive searchable reference for Tailwind CSS utility classes with live previews, CSS output, and arbitrary value support
User Agent Parser
Parse any User-Agent string to extract browser, OS, device, engine, CPU, and bot details instantly.
UUID Generator – Generate, Validate & Format UUIDs
Free online UUID generator for developers. Create random (v4), time-based (v1), time-ordered (v7), and nil UUIDs. Validate and format UUIDs instantly.