Free Online Developer & SEO Tools

Password Generator

Generate strong, secure, random passwords with custom length and character options.

Password Strength Checker

Analyze any password and get a detailed strength report with improvement suggestions.

Base64 Encoder

Encode any text or string to Base64 format instantly.

Base64 Decoder

Decode Base64 encoded strings back to plain text instantly.

Image to Base64 Converter

Convert images into Base64 encoded strings for embedding into HTML, CSS, or JSON.

Base64 to Image Converter

Decode Base64 encoded strings and Data URIs back into viewable and downloadable images.

HTML Beautifier

Format, indent, and beautify minified or messy HTML code into a clean, readable style.

JavaScript Beautifier

Format and beautify messy or minified JavaScript code into a clean, readable style.

JavaScript Minifier

Compress and optimize JavaScript code to reduce file size and improve loading speeds.

HTML Minifier

Compress and minify HTML code online to reduce file size and improve website load speed.

CSS Beautifier

Format, indent, and beautify minified or messy CSS code into a clean, readable style.

CSS Minifier

Compress and minify CSS code online to reduce file size and improve website load speed.

JSON Formatter

Beautify, format, and validate JSON data with syntax highlighting.

JSON Validator

Validate your JSON syntax and get clear error messages on invalid JSON.

UUID Generator

Generate RFC 4122 and RFC 9562 compliant UUIDs (v4, v7, v1) in bulk for development, databases, and testing.

URL Encoder

Encode special characters in URLs for safe transmission and query parameters.

URL Decoder

Decode percent-encoded URLs back to human-readable text.

HTML Encoder / Decoder

Encode and decode HTML entities like &, <, > and more.

Markdown Previewer

Write Markdown and see a live rendered preview side by side.

Regex Tester

Test and debug regular expressions with live match highlighting.

Text Difference Checker

Compare two blocks of text and highlight the differences line by line.

Line Sorter

Alphabetize or numerically sort text lines, randomly shuffle lists, or sort by length.

Remove Duplicate Lines

Instantly remove duplicate lines from lists, text files, and logs while preserving order.

Binary ↔ Hex ↔ ASCII Converter

Convert values seamlessly between Text, Binary, Hexadecimal, Decimal, and Octal formats.

Text Case Converter

Convert text instantly between UPPERCASE, lowercase, camelCase, PascalCase, snake_case, and more.

Word Counter

Count words, characters, sentences, paragraphs, and reading time in any text.

Character Counter

Count characters with and without spaces. Perfect for social media and SEO.

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum text with custom paragraph and word counts.

Slug Generator

Convert any title or phrase into a clean URL-friendly slug.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa.

JWT Decoder

Decode and inspect JSON Web Tokens — header, payload, and signature.

Color Picker & Converter

Pick and convert colors between HEX, RGB, HSL, HSV, and CMYK. Includes contrast checker.

CSS Gradient Generator

Visually create beautiful CSS gradients. Supports linear, radial, angles, and multiple color stops.

CSS Box Shadow Generator

Visually generate CSS box-shadows. Adjust offset, blur, spread, and opacity in real-time.

Color Palette Generator

Generate beautiful color palettes. Explore monochrome, complementary, analogous, and triadic schemes.

JSON to CSV Converter

Convert JSON data into CSV format instantly. Great for opening API data in Excel.

CSV to JSON Converter

Convert CSV files into JSON format instantly. Great for preparing data for APIs.

Hash Generator

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

Hash Checker

Verify file integrity by comparing MD5, SHA-1, SHA-256, and SHA-512 hashes.

XML Formatter

Format, beautify, and validate messy XML strings. 100% client-side and secure.

XML Validator

Check if XML is well-formed. Detects syntax errors, mismatched tags, and structural issues.

YAML to JSON Converter

Convert YAML configuration files into JSON format instantly. 100% secure.

JSON to YAML Converter

Convert JSON data into clean, readable YAML format instantly. 100% secure.

SQL Formatter

Format, beautify, and minify SQL queries. Supports MySQL, PostgreSQL, SQL Server, and more.

CSS Grid Generator

Visually design and generate complex CSS Grid layouts instantly.

CSS Flexbox Generator

Visually build CSS Flexbox layouts. Instantly generate HTML and CSS code.

Gitignore Generator

Generate .gitignore files instantly by selecting your tech stack.

.env Generator

Generate, manage, and validate environment variables for any framework.

Fake User Generator

Generate realistic, localized dummy user data for testing and mockups.

Linux Permission Calculator

Calculate and convert Linux file permissions easily.

Cron Expression Generator

Build and validate cron expressions with a visual scheduler interface.

Linux Command Explorer

Search and explore Linux commands with examples and man page summaries.

Systemd Service File Generator

Generate systemd unit service files from a guided interactive form.

Docker Compose Generator

Generate docker-compose.yml files from a visual multi-service builder.

Nginx Config Generator

Generate optimized Nginx server block configurations for common use cases.

File Permission Converter

Convert between octal, symbolic, and binary file permission notations.

Meta Tag Preview Tool

Preview how your pages look in Google search results and social media.

Keyword Density Checker

Analyze keyword frequency and density in your content for SEO optimization.

Robots.txt Generator

Generate a robots.txt file to control search engine crawler access.

Sitemap Validator

Validate your XML sitemap structure and check for common errors.

Open Graph Preview Tool

Preview how your Open Graph tags look when shared on Facebook, Twitter, and LinkedIn.

SEO Title Length Checker

Check if your SEO title length is within Google's recommended range.

Meta Description Length Checker

Check if your meta description is the right length for Google's SERP display.

Image Compressor

Compress JPG, PNG, WebP, and GIF images online to reduce file size without visible quality loss.

Image Resizer

Resize images to exact dimensions or percentage while maintaining aspect ratio.

JPG to PNG Converter

Convert JPG/JPEG images to PNG format with transparent background support.

PNG to JPG Converter

Convert PNG images to JPG format with adjustable quality settings.

WebP Converter

Convert images to and from WebP format for better web performance.

Image Cropper

Crop images to custom dimensions or aspect ratios with a drag-and-drop interface.

EXIF Viewer

View embedded EXIF metadata in photos including camera settings, date, and GPS location.

Remove EXIF Metadata

Strip sensitive EXIF metadata from images to protect your privacy.

Image Dimension Checker

Check image width, height, aspect ratio, file size, and format instantly.

Readability Checker

Analyze reading level, sentence length, and passive voice in your writing.

Schema Markup Generator

Generate valid JSON-LD structured data for Articles, FAQs, Products, and more.

Canonical Tag Generator

Generate correct HTML canonical tags to prevent duplicate content issues.

Decision Wheel

A fun, interactive spin wheel to make random choices for giveaways, games, and decisions.

QR Code Generator

Generate QR codes from text, URLs, or any data with custom colors and sizes.

Length Converter

Convert between metric and imperial length units like meters, kilometers, miles, feet, inches, and yards instantly.

Weight Converter

Convert values using our premium, client-side Weight Converter online tool.

Mass Converter

Convert values using our premium, client-side Mass Converter online tool.

Temperature Converter

Convert values using our premium, client-side Temperature Converter online tool.

Area Converter

Convert values using our premium, client-side Area Converter online tool.

Volume Converter

Convert values using our premium, client-side Volume Converter online tool.

Speed Converter

Convert values using our premium, client-side Speed Converter online tool.

Time Converter

Convert values using our premium, client-side Time Converter online tool.

Angle Converter

Convert values using our premium, client-side Angle Converter online tool.

Pressure Converter

Convert pressure units like Pascal, Bar, Psi, Atmosphere, and Torr instantly.

Energy Converter

Convert energy units like Joules, Calories, Watt-hours, BTUs, and Therms instantly.

Power Converter

Convert power units like Watts, Kilowatts, Megawatts, Horsepower, and BTUs/hour instantly.

Force Converter

Convert force units like Newtons, Kilonewtons, Dynes, Kilogram-force, and Pound-force instantly.

Torque Converter

Convert torque units like Newton-meters, Kilogram-force meters, Pound-feet, and Pound-inches instantly.

Frequency Converter

Convert frequency units like Hertz, Kilohertz, Megahertz, Gigahertz, and RPM instantly.

Data Size Converter

Convert data size units between decimal (KB, MB, GB, TB) and binary (KiB, MiB, GiB, TiB) units instantly.

Data Transfer Converter

Convert network bandwidth and transfer rates like Mbps, Gbps, KB/s, and MB/s instantly.

Fuel Consumption Converter

Convert fuel consumption and mileage units like MPG (US & UK), L/100km, and km/L instantly.

Currency Converter

Convert between major global currencies with live offline-capable rates.

Unit Price Calculator

Calculate and compare unit prices of different packaging options to find the best value deal.

Distance Converter

Convert distance and length measurements between metric and imperial units.

Height Converter

Convert heights between feet/inches and centimeters/meters instantly.

Width Converter

Convert width measurements between imperial and metric units instantly.

Depth Converter

Convert values using our premium, client-side Depth Converter online tool.

Kilometer to Miles

Convert values using our premium, client-side Kilometer to Miles online tool.

Miles to Kilometers

Convert values using our premium, client-side Miles to Kilometers online tool.

Celsius to Fahrenheit

Convert values using our premium, client-side Celsius to Fahrenheit online tool.

Fahrenheit to Celsius

Convert values using our premium, client-side Fahrenheit to Celsius online tool.

Kilograms to Pounds

Convert values using our premium, client-side Kilograms to Pounds online tool.

Pounds to Kilograms

Convert values using our premium, client-side Pounds to Kilograms online tool.

Liters to Gallons

Convert values using our premium, client-side Liters to Gallons online tool.

Gallons to Liters

Convert values using our premium, client-side Gallons to Liters online tool.

Meters to Feet Converter

Convert meters to feet easily with our free online length converter.

Feet to Meters Converter

Convert feet to meters easily with our free online length converter.

Centimeters to Inches Converter

Convert centimeters to inches easily with our free online length converter.

Inches to Centimeters Converter

Convert inches to centimeters easily with our free online length converter.

Square Meters to Square Feet Converter

Convert square meters to square feet instantly with our precise, free online area converter tool.

Square Feet to Square Meters Converter

Convert square feet to square meters instantly with our precise, free online area converter tool.

Cubic Meters to Cubic Feet Converter

Convert cubic meters to cubic feet instantly with our precise, free online volume converter tool.

Cubic Feet to Cubic Meters Converter

Convert cubic feet to cubic meters instantly with our precise, free online volume converter tool.

Kilograms to Stones Converter

Convert kilograms to stones and pounds instantly with our precise, free online weight converter tool.

Stones to Kilograms Converter

Convert stones and pounds to kilograms instantly with our precise, free online weight converter tool.

Ounces to Grams Converter

Convert ounces to grams instantly with our precise, free online weight converter tool.

Grams to Ounces Converter

Convert grams to ounces instantly with our precise, free online weight converter tool.

Pints to Liters Converter

Convert US and UK/Imperial pints to liters instantly with our precise, free online volume converter tool.

File Validator

Validate file signatures, magic byte headers, and format integrity locally in your browser.

File Comparator

Compare two files byte-by-byte locally in browser to detect differences and offsets.

Bulk Renamer

Batch rename files with 8 customizable functions — add text, remove text, find & replace, change case, numbering, extension control, date stamps, and cleanup.

File Extractor

Inspect and extract files from ZIP, TAR, and GZ archives directly in your browser.

File Decompressor

Decompress GZIP and Deflate files in your browser using native Web APIs.

Text Shadow Generator

Create and preview beautiful CSS text-shadow effects, 3D text, and neon glows with real-time visual controls.

Border Radius Generator

Generate complex 8-point CSS border-radius shapes, organic blobs, and custom borders with visual controls.

Contrast Checker (WCAG)

Check color contrast ratios between text and background colors to ensure WCAG 2.1/2.2 Level AA and AAA accessibility compliance.

Color Shade Generator

Generate 10 lighter tints and 10 darker shades for any base HEX or RGB color instantly.

Font Size Converter (PX/REM/EM)

Convert typography measurements bidirectionally between Pixels, REM, EM, Points (PT), and Percentages (%).

Color Mixer & Blending Tool

Mix two colors in custom percentage ratios to generate blended hex codes, RGB values, and 10-step gradient palettes.

Color Blindness Simulator

Simulate how your design colors appear to people with Protanopia, Deuteranopia, Tritanopia, and Achromatopsia.

CSS Keyframe Animation Generator

Create, preview, and customize pure CSS @keyframes animations with interactive controls for duration, delay, timing, and direction.

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