Developer Tools
Essential tools for developers: JSON, Base64, UUID, hashing, and more.
JSON Formatter & Validator
Format, validate, and beautify JSON data.
UUID Generator
Generate random UUIDs (v4) for use in your applications.
Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings.
URL Encoder / Decoder
Encode and decode URLs and query parameters.
Hash Generator
Generate MD5, SHA-256, and SHA-512 cryptographic hashes.
JWT Decoder
Decode and inspect JSON Web Token payloads without signature verification.
Color Converter
Convert colors between HEX, RGB, and HSL formats instantly.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
RegEx Tester
Test and debug regular expressions with live match highlighting.
CSV β JSON Converter
Convert CSV data to JSON and JSON arrays back to CSV format.
Diff Checker
Compare two texts and highlight the differences line by line.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text for design and development.
HTML Encoder / Decoder
Encode special characters to HTML entities and decode them back.
YAML β JSON Converter
Convert between YAML and JSON formats instantly.
Cron Expression Parser
Parse and explain cron expressions with next scheduled execution times.
JSON to TypeScript
Convert JSON objects to TypeScript interfaces automatically.
SQL Formatter
Format and beautify SQL queries for better readability.
String Escape / Unescape
Escape and unescape strings for JSON, JavaScript, and HTML contexts.
Favicon Generator
Generate favicon PNG files from text, emoji, or initials for your website.
HTTP Status Code Reference
Look up HTTP status codes with descriptions, use cases, and examples.
Markdown Table Generator
Build Markdown tables visually and copy the formatted output instantly.
Image to Base64
Convert images to Base64 Data URL for embedding directly in HTML or CSS.
CSS Unit Converter
Convert between px, em, rem, vw, vh, pt, and cm for responsive web design.
Chmod Calculator
Calculate Unix file permissions. Convert between octal notation and symbolic rwx format.
Number to Words
Convert numbers to English words (e.g. 1234 β one thousand two hundred thirty-four).
Color Palette Generator
Generate complementary, analogous, triadic, and other color palettes from a base color.
QR Code Generator
Generate QR codes from any text or URL instantly.
Aspect Ratio Calculator
Calculate aspect ratios and scale dimensions while maintaining proportions.
CSS Gradient Generator
Create beautiful CSS linear and radial gradients with a visual editor.
Morse Code Converter
Convert text to Morse code and decode Morse code back to text.
IP Subnet Calculator
Calculate subnet mask, network address, broadcast, and host range for any CIDR block.
ASCII Art Generator
Convert text to ASCII art using classic FIGlet-style block letter fonts.
XML Formatter
Format, validate, and minify XML documents with syntax highlighting.
JWT Generator
Generate signed JWT tokens with custom header, payload, and secret key.
Cipher Tool
Encode and decode text with Caesar, ROT13, and Vigenère ciphers.
MIME Type Lookup
Look up MIME types by file extension or find extensions for a given MIME type.
Color Blindness Simulator
Preview how colors appear to people with different types of color vision deficiency.
JSON Diff
Compare two JSON objects and highlight added, removed, and changed keys.
Number Formatter
Format numbers as currency, percentage, scientific notation, or with custom separators.
Markdown to HTML
Convert Markdown source to HTML code for copy-pasting into projects.
CSS Minifier / Beautifier
Minify CSS to reduce file size, or beautify minified CSS for readability.
Color Name Lookup
Find the nearest CSS color name for any HEX or RGB color value.
Color Contrast Checker
Check WCAG 2.1 color contrast ratio for text and background colors.
URL / URI Parser
Parse any URL into protocol, host, path, query parameters, and hash.
JWT Expiry Checker
Decode and inspect JWT tokens β check expiration and all time claims.
HTTP Header Analyzer
Paste raw HTTP headers and get a detailed breakdown with descriptions.
SVG Optimizer
Minify and clean SVG code by removing comments, metadata, and whitespace.
CSS Box Shadow Generator
Visually build CSS box-shadow effects with multiple layers and copy the generated CSS code.
CSS Border Radius Generator
Visually customize border-radius per corner and copy the generated CSS code instantly.
HTML to Markdown
Convert HTML code or rich text into clean Markdown syntax instantly.
JSON Schema Validator
Validate any JSON document against a JSON Schema (Draft 7) and see detailed error messages.
.gitignore Generator
Generate .gitignore files for any language or framework.
Meta Tag Generator
Generate HTML meta, Open Graph, and Twitter Card tags.
CSS Specificity Calculator
Calculate and compare CSS selector specificity values.
Open Graph Preview
Preview how your webpage looks when shared on social media.
Docker Compose Generator
Generate Docker Compose YAML by configuring services, ports, and volumes.
Nginx Config Generator
Generate Nginx server block configurations for static sites, reverse proxies, and SSL.
JSONPath Tester
Test JSONPath expressions against JSON data.
TypeScript Type Stripper
Strip TypeScript type annotations to get clean JavaScript.
.env File Parser
Parse, validate, and format .env files.
Semver Calculator
Compare semantic versions and check if a version satisfies a range (^, ~, >=, etc.).
CSS Animation Generator
Visually build CSS @keyframes animations and copy the generated code.
TOML β JSON Converter
Convert between TOML and JSON formats and validate TOML syntax.
XML to JSON
Convert XML documents to JSON format instantly.
HTML Minifier
Remove whitespace, comments, and optional tags from HTML to reduce file size.
JavaScript Minifier
Minify JavaScript by removing comments and extra whitespace to reduce file size.
Markdown TOC Generator
Generate a linked Table of Contents from markdown headings.
Git Commit Message Generator
Generate Conventional Commits format messages with type, scope, and description.
JSON to CSV
Convert JSON arrays to CSV format for spreadsheets.
HTML Validator
Validate HTML code and find errors, warnings, and best practices.
Color Mixer
Mix two colors and see blended results in RGB, HEX, and HSL.
CSS Gradient Analyzer
Parse and visualize CSS gradient code. Extract colors and stops.
Base58 Encoder / Decoder
Encode text to Base58 or decode Base58 strings. Used in Bitcoin addresses and IPFS CIDs.
CSS Clip-Path Generator
Visually create CSS clip-path shapes with live preview. Generate polygon, circle, ellipse, and custom shapes.
CSS Filter Generator
Adjust CSS filter effects (blur, brightness, contrast, etc.) with live preview and copy the CSS output.
CSV to SQL INSERT Generator
Convert CSV data to SQL INSERT statements. Optionally generate CREATE TABLE DDL with auto-detected column types.
SQL Result to JSON Converter
Convert SQL query results (MySQL/PostgreSQL CLI output) to JSON. Supports tab-separated and pipe-separated formats.
Makefile Generator
Generate Makefiles for C, C++, Python, Go, Rust, Node.js, and Java projects with customizable targets.
SVG to CSS Converter
Convert SVG code to CSS background-image data URI. Supports URL-encoded and Base64 formats.
CSS Variables Generator
Create CSS custom properties (variables) with a visual editor. Generate :root blocks with color pickers and presets.
CSV to HTML Table Generator
Convert CSV data to an HTML table with live preview. Options for styling, headers, and CSS classes.
Code Beautifier
Beautify and format JavaScript, HTML, and CSS code with proper indentation. Clean up minified code.
HTML to JSX
Convert HTML markup to JSX syntax for React. Transforms attributes, inline styles, and void elements automatically.
CSS Flexbox Generator
Visually generate CSS flexbox layouts with live preview. Configure flex-direction, wrap, justify-content, align-items, and gap.
CSS Grid Generator
Visually build CSS Grid layouts and copy the generated CSS code.
HTTP Basic Auth Encoder
Encode and decode HTTP Basic Authentication credentials. Generate the Authorization header value from username and password.
GraphQL Query Formatter
Format and beautify GraphQL queries, mutations, subscriptions, and fragments with proper indentation.
CSS Text Shadow Generator
Generate CSS text-shadow effects with live preview and copy-ready code.
HTML Table Generator
Generate HTML table markup with custom rows, columns, and styling options.
SQL INSERT Generator
Generate SQL INSERT statements from tabular data input.
Web App Manifest Generator
Generate a PWA web app manifest.json with all required fields.
Color Scheme Generator
Generate complementary, triadic, and analogous color schemes from a base color.
Postman to cURL
Convert Postman request JSON exports to cURL commands.
JSON to Python
Convert JSON data to Python dict, dataclass, or TypedDict syntax.
GitHub README Generator
Generate a professional GitHub README.md with badges, installation, usage, and more.
XML Sitemap Generator
Generate XML sitemaps from a list of URLs with priority and change frequency settings.
JSON to Go Struct
Convert JSON data to Go struct types with proper field tags.
Dockerfile Generator
Generate Dockerfiles for common tech stacks: Node.js, Python, Go, Java, and more.
Barcode Generator
Generate Code 128, EAN-13, and EAN-8 barcodes as SVG.
JSON to Rust Struct
Convert JSON objects to Rust struct definitions with serde derive macros.
EditorConfig Generator
Generate .editorconfig files for consistent coding styles across editors.
Changelog Generator
Format structured changelogs with version numbers and categories.
Package.json Generator
Generate a package.json file for your Node.js project interactively.
Webpack Config Generator
Generate a webpack.config.js file with loaders, plugins, and output settings.
HTTP Mock Generator
Generate mock HTTP response templates with status codes, headers, and body for testing.
Web Safe Fonts Reference
Browse all web-safe fonts with live previews filtered by serif, sans-serif, and monospace categories.
GitHub Actions Generator
Generate GitHub Actions workflow YAML for CI/CD pipelines with customizable triggers, jobs, and steps.
VS Code Snippet Generator
Create custom VS Code snippets with tabstops, placeholders, and variable syntax for any language.
Terminal Color Reference
ANSI terminal color escape codes reference and preview.
npm / yarn / pnpm Commands Reference
Quick reference for npm, yarn, and pnpm package manager commands.
SSH Config Generator
Generate ~/.ssh/config entries for multiple hosts with custom settings.
Kubernetes YAML Generator
Generate Kubernetes manifests for Deployments, Services, ConfigMaps, and Namespaces.
Regex Cheat Sheet
Interactive regular expression reference with live pattern testing and copy-on-click examples.
Linux Commands Reference
Searchable Linux CLI command reference with categories, examples, and one-click copy.
JSON to Java Converter
Convert JSON objects to Java POJO classes with Lombok and Jackson annotation support.
JSON to C# Class
Convert JSON into C# POCO class definitions with properties, data annotations, and Newtonsoft attributes.
Prettier Config Generator
Generate a .prettierrc configuration file by selecting your preferred code formatting options.
Sitemap XML Generator
Generate sitemap.xml files with URLs, priorities, and change frequencies.
Meta Tags Generator
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards.
Changelog Generator
Format structured changelogs with version numbers and categories.
cURL to Fetch Converter
Convert curl commands to JavaScript fetch or axios.
Docker Run Generator
Generate docker run commands interactively.
Webhook Payload Generator
Generate sample webhook payloads for GitHub, Stripe, and generic HTTP webhooks.
Git Commit Message Generator
Generate conventional commit messages with type, scope, and breaking-change support.
HTTP Request Inspector
Build and inspect HTTP requests visually, then generate curl or fetch code snippets.
Email Address Validator
Validate single or multiple email addresses for format compliance.
Package.json Generator
Generate a package.json file for your Node.js project interactively.