HTML CSS JS Playground

JSON Formatter & Validator

Format, validate, and minify JSON data instantly

Base64 Encoder / Decoder

Encode or decode Base64 strings in one click

URL Encoder / Decoder

Encode or decode URL-safe strings

Color Code Converter

Convert color codes between HEX, RGB, and HSL formats

Strong Password Generator

Generate strong, secure passwords with custom rules

CSS Formatter & Beautifier

Format and beautify or minify CSS code online

HTML Formatter & Beautifier

Format and beautify or minify HTML code with proper indentation

XML Formatter & Beautifier

Format and validate XML. Check if XML is well-formed

CSV Formatter Online

Format CSV data and preview it as a table with multiple delimiter support

CSV to JSON Converter

Convert CSV data to a JSON array instantly

JSON to CSV Converter

Convert a JSON array to CSV format instantly

JSON to JSONP Converter

Wrap JSON in a JSONP callback function for cross-domain requests

JSONP to JSON Converter

Strip JSONP callback wrapper and extract the pure JSON

Cron Job Expression Generator

Generate cron expressions with human-readable descriptions and presets

Mask Sensitive Data

Mask emails, phone numbers, and credit cards in text

Password Strength Checker

Check password strength with a live meter and criteria checklist

Random Email Generator

Generate random email addresses for testing and development

Random Username Generator

Generate random usernames in various styles for accounts and profiles

Domain Name Extractor

Extract domain names from URLs and text with deduplication

Sitemap XML Validator

Validate sitemap XML structure and list all URLs found

Online Screen Keyboard

Virtual on-screen keyboard with shift, caps lock, and copy support

UUID Generator

Generate random UUID v4 or timestamp-based UUID v1 in bulk

Hash Generator (SHA-256 / MD5)

Generate SHA-256, SHA-1, and MD5 hashes from any text

HTML Entity Encoder / Decoder

Encode or decode HTML special characters and entities

Regex Tester

Test regular expressions with live match highlighting

JWT Decoder

Decode JWT tokens and inspect header and payload

JSON to YAML Converter

Convert JSON data to YAML format in the browser

YAML to JSON Converter

Convert basic YAML to pretty-printed JSON

SQL Formatter Online

Format and beautify SQL queries or minify to one line

Number to Words Converter

Convert integers up to 999 billion into English words

CSS Gradient Generator

Build linear or radial CSS gradients visually and copy ready-to-use CSS code

Color Palette Generator

Generate complementary, analogous, triadic, and monochromatic color palettes

Color Contrast Checker

Check color contrast ratio for WCAG 2.1 AA and AAA accessibility compliance

Meta Tag Generator

Generate complete HTML meta tags including SEO, Open Graph, and Twitter Card tags

Robots.txt Generator

Generate a robots.txt file with custom crawler rules, disallow paths, and sitemap URL

Image to Base64 Converter

Convert PNG, JPG, GIF, SVG, or WebP images to Base64 data URI for HTML and CSS

QR Code Generator

Generate QR codes from URLs, text, email, phone, or Wi-Fi. Download as PNG or SVG

CSS Box Shadow Generator

Visually build CSS box-shadow styles with live preview and copy the CSS code

CSS Flexbox Generator

Configure flexbox container properties visually with live preview and copy CSS

PX ↔ REM / EM Converter

Convert CSS units between pixels, REM, and EM with bulk conversion and reference table

UTM Link Builder

Build UTM-tagged campaign URLs for Google Analytics. Add source, medium, campaign, and more

URL Parser & Analyzer

Parse any URL into protocol, hostname, path, query parameters, and hash. Edit and rebuild URLs

CSS Border Radius Generator

Control each corner radius individually with live preview and copy the CSS code

JSON ↔ XML Converter

Convert JSON to XML and XML to JSON instantly with formatted output

CSS Grid Generator

Build CSS grid layouts visually with live preview and instant code export

IP Address Lookup

Look up geolocation, ISP, and timezone for any IP address instantly

HTTP Status Codes

Complete reference for all HTTP status codes 1xx–5xx with descriptions

Color Blindness Simulator

Simulate how images and colors appear with different types of color blindness

Markdown Table Generator

Build Markdown tables visually and copy the code instantly.

Image to Base64

Convert any image to Base64 data URI for embedding in code.

CSV to HTML Converter

Convert CSV data to HTML in your browser

CSV to TSV Converter

Convert CSV data to TSV in your browser

CSV to XML Converter

Convert CSV data to XML in your browser

JSON to HTML Converter

Convert JSON data to HTML in your browser

JSON to TSV Converter

Convert JSON data to TSV in your browser

XML to CSV Converter

Convert XML data to CSV in your browser

XML to HTML Converter

Convert XML data to HTML in your browser

XML to TSV Converter

Convert XML data to TSV in your browser

HTML Color Codes

Pick a color and get HEX, RGB, HSL and CMYK codes

XML Escape and Unescape

Escape special characters for XML or decode entities

JavaScript Formatter

Beautify minified or messy JavaScript code

JavaScript Minifier

Reduce JavaScript file size for production

JavaScript Obfuscator

Make JavaScript harder to read and copy

JSON Editor

Edit JSON in a tree view or as text

CSS Font Stacks

Preview and copy web-safe CSS font stacks

.htaccess Generator

Create Apache redirect, security and caching rules

Chmod Permissions Calculator

Convert Linux permissions between octal and symbolic

Email Address Validator

Check email format for one address or a full list