Developer Toolbox
Free Online Tools

Base64 Encoder/Decoder

Encode and decode Base64 strings online. Perfect for encoding binary data, images, and text for web applications.

URL Encoder/Decoder

Encode and decode URLs for web development. Handle special characters, spaces, and international characters safely.

HTML Entities Encoder

Convert special characters like <, >, & to HTML entities for safe web display and prevent XSS attacks.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases. Essential for programming and computer science.

Timestamp Converter

Convert Unix timestamps to readable dates and vice versa. Supports both seconds and milliseconds format.

YAML JSON Converter

Convert between YAML and JSON formats seamlessly. Perfect for configuration files, API responses, and data interchange.

IP Address Converter

Convert IP addresses between different formats including decimal, binary, hex. Supports both IPv4 and IPv6 addresses.

MD5/SHA256 Hash Generator

Calculate MD5 and SHA256 hash values for text and files. Essential for file integrity verification and cryptographic applications.

File Size Converter

Convert between bytes, KB, MB, GB, TB, PB with both binary and decimal systems. Accurate file size calculations.

Unit Converter

Convert between different units of measurement including length, weight, temperature, area, volume, speed, pressure, and energy.

Text Case Converter

Convert text between uppercase, lowercase, title case, camelCase, snake_case, and more formatting options.

Text Counter

Count characters, words, lines, and paragraphs in real-time. Perfect for social media posts and content creation.

JSON Formatter

Format, validate, and beautify JSON data. Minify or prettify JSON with syntax highlighting and error detection.

CSV to JSON Converter

Convert CSV data to JSON format online. Parse CSV files and transform them into structured JSON data.

Markdown to HTML Converter

Convert Markdown to HTML with GitHub-flavored markdown support. Perfect for documentation and web content creation.

Regex Tester

Test and validate regular expressions with real-time matching and detailed results. Essential for pattern matching and validation.

JWT Token Decoder

Decode and validate JSON Web Tokens (JWT) online. View headers, payloads, and verify signatures for API development.

HTML/CSS Beautifier

Format and beautify HTML and CSS code for better readability. Support custom indentation, compression, and code organization.

HTML Tag Remover

Remove all HTML tags from content and extract plain text. Perfect for cleaning copied web content and text extraction.

PDF Merger

Combine multiple PDF files into one document online for free. Fast, secure PDF merger with no file size limits.

Image to PDF

Convert JPG, PNG, and other images to PDF documents. Batch convert multiple images to single PDF file.

Image Cropper

Split images into multiple pieces with custom grid layouts. Perfect for Instagram posts, sprite sheets, and creative projects.

Background Remover

Remove image backgrounds with precision tools. Magic wand, brush, and eraser tools with edge refinement. No AI required.

Image Compressor

Compress and optimize images while maintaining quality. Smart compression, batch processing, format conversion, and privacy protection.

Image Transformer

Transform images with rotation, flipping, and resizing. Perfect for batch processing with consistent transformations.

Image Stitcher

Stitch multiple images together with flexible layouts. Perfect for creating collages, panoramas, and comparison images.

Image Pixelizer

Create stunning pixel art effects from your images. Perfect for retro aesthetics, artistic effects, and privacy protection.

Excel Viewer

View Excel files online without Microsoft Office. Support XLSX and XLS formats with sheet navigation and table display.

UUID Generator

Generate universally unique identifiers (UUID) instantly. Supports multiple UUID versions for development and testing.

Password Generator

Generate secure, random passwords with customizable length and character sets. Built-in strength indicator.

Random String Generator

Generate random strings with customizable length and character sets. Perfect for test data, API keys, and tokens.

QR Code Generator

Create QR codes for URLs, text, emails, and phone numbers. High-resolution PNG download with customizable size.

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text for design layouts and web development. Support multiple formats and custom lengths.

Color Picker

Pick colors and get HEX, RGB, HSL values instantly. Perfect for web design and CSS development.

Color Palette Generator

Create beautiful color schemes and palettes for web design, graphic design, and presentations.

CSS Box Shadow Generator

Generate CSS box shadow effects with live preview. Customize shadow properties and copy CSS code instantly.

Keyword Density Checker

Analyze keyword density and frequency in your content. Essential for SEO optimization and content analysis with real-time insights.

Meta Tag Generator

Generate SEO-optimized meta tags, Open Graph, and Twitter cards for better search engine visibility and social media sharing.

Statistics Calculator

Calculate comprehensive statistics including mean, median, mode, standard deviation, quartiles, and variance for your datasets.

CSV Data Cleaner

Clean and standardize CSV data with duplicate removal, missing value handling, whitespace cleanup, and formatting options.

Unix Permissions Calculator

Calculate and convert Unix file permissions between different formats. Essential for Linux and Unix system administration.

Password Strength Checker

Analyze password strength and security with entropy calculation, crack time estimation, and detailed security recommendations.

Practical Calculator Collection

Collection of useful calculators for everyday math, finance, and health calculations including percentage, tip, BMI, age, discount, and compound interest.

Download Time Calculator

Calculate download time for files based on file size and internet connection speed. Estimate duration for various connection speeds.

Clipboard Manager

Save, organize and manage your copy history with advanced search and organization features. Perfect for productivity and text management.

Countdown Timer & Alarm

Set countdown timers and alarms for productivity, cooking, breaks, and time management with sound alerts and visual notifications.