Free Tools

Developer Tools

JSON formatters, regex testers, encoders, and dev utilities

Base64 Encode & Decode

Encode text and files to Base64 or decode Base64 strings instantly. Supports URL-safe Base64, data URIs, and file conversion.

URL Encoder & Decoder

Encode or decode URLs and query parameters instantly. Supports encodeURIComponent and encodeURI modes.

JSON Formatter & Validator

Format, validate, and explore JSON data with syntax highlighting and tree view.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and CRC32 hashes from text and files instantly.

UUID Generator

Generate UUID v4, v1, and v7 with bulk generation, validation, and format options.

Regex Tester

Build and test regular expressions with real-time match highlighting, capture groups, and code generation.

JWT Decoder

Decode and inspect JWT tokens. View header, payload, signature with expiry status and claim annotations.

Color Converter

Convert between HEX, RGB, HSL, and CMYK color formats instantly with a live preview swatch, color picker, palette generator, and contrast checker.

JSON Converter

Convert between JSON, CSV, XML, YAML, TOML, TypeScript interfaces, and JSON Schema. All conversions run 100% in your browser.

Markdown Editor

Write Markdown with live preview, GitHub-Flavored Markdown support, toolbar formatting, export to .md or HTML, and dark mode.

HTML Beautifier

Format, minify, and clean HTML code with customizable indentation, inline CSS/JS support, HTML validation, JSX conversion, and one-click copy.

HTML Entity Encoder/Decoder

Encode and decode HTML entities. Convert special characters to named, decimal, or hex entities with a built-in reference table.

HTML Minifier

Minify HTML to reduce file size. Remove comments, collapse whitespace, strip redundant attributes, and minify inline CSS/JS.

CSS Formatter & Beautifier

Format and beautify CSS with customizable indentation, or minify for production. Size comparison and dark mode.

CSS Minifier

Minify CSS to reduce file size. Remove comments, whitespace, optimize colors, strip vendor prefixes.

JavaScript Minifier

Minify JavaScript to reduce file size. Remove comments, whitespace, console.log, debugger, and shorten booleans.

SQL Formatter & Beautifier

Format and beautify SQL queries with multi-dialect support. Keyword uppercase, custom indent, dark mode.

XML Formatter & Beautifier

Format, beautify, validate, and minify XML online. Syntax highlighting, tree view, XPath query, configurable indentation. 100% client-side.

YAML to JSON Converter

Convert between YAML and JSON instantly. Bidirectional conversion, auto-detect format, Kubernetes manifest detection. 100% client-side.

Code Prettifier (Un-Minify)

Un-minify and beautify JavaScript, CSS, HTML, XML, JSON, SQL, and TypeScript code. Auto-detect language. 100% client-side.

Code Diff / Compare

Compare two code snippets side by side. Line-level and character-level diff, unified/split view. 100% client-side.

Cron Expression Builder

Visual cron expression builder with next-run preview, code snippets, natural language input, and presets. 100% client-side.

CSS Animation Generator

Visual CSS animation builder with keyframe timeline, live preview, 14 presets, easing curves, and ready-to-copy CSS output.

CSS Grid Generator

Visual CSS Grid layout builder with live preview, named areas, track sizing, and multi-format code output. 100% client-side.

CSS Flexbox Generator

Visual CSS Flexbox playground with live preview, container and item controls, presets, and multi-format code output. 100% client-side.

CSS Box Shadow Generator

Visual box-shadow and text-shadow generator with multiple layers, presets, and copy-ready CSS output. 100% client-side.

CSS Border Radius Generator

Visual border-radius generator with simple and advanced modes, shape presets, live preview, and copy-ready CSS. 100% client-side.

DNS Lookup

Look up DNS records for any domain ƒ?" A, AAAA, MX, CNAME, TXT, NS, SOA, PTR. Queries Google Public DNS.

IP Address Lookup

Look up geographic location, ISP, organization, and ASN for any IP address. Instant geolocation results.

What Is My IP

Instantly see your public IPv4/IPv6 address, geolocation, ISP, and browser details. Free, no signup.

Ping Tool

Measure HTTP latency to any website or server. Tests round-trip time with statistics including min, max, average, and packet loss.

Port Checker

Check if a specific port is open on any server or IP address. Scan common ports like HTTP, HTTPS, SSH, FTP, and database ports.

SSL Checker

Check SSL/TLS certificate details for any domain. View expiry date, issuer, signature algorithm, SANs, and certificate chain.

WHOIS Lookup

Look up WHOIS registration data for any domain. View registrar, creation date, expiry date, name servers, and registrant information.

Speed Test

Test your internet connection speed. Measures download speed in Mbps, latency, and jitter with a visual speed gauge.