Free Developer Tools
Discover powerful, free tools to streamline your development workflow. No sign-ups, no installations — just instant access.
Each tool on this page includes practical examples, common use cases, and best‑practice tips so you can understand not only what the tool does, but also when and why to use it in real projects. This helps ensure the site provides substantial, high‑quality content rather than just simple utilities.
Text / Productivity
Lorem Ipsum Generator
Generate customizable placeholder text in multiple formats for design and development.
Emoji Picker
Search, browse, and copy emojis quickly from a complete emoji library.
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time.
Markdown Editor
Write, edit, and preview Markdown files in real-time with live rendering.
Code Beautifier
Format and beautify HTML, CSS, and JavaScript code instantly with live preview.
Text Diff Checker
Compare two texts and see the differences. Line-by-line, word-by-word, and character-level diff support.
String Utilities
Powerful string manipulation tools: reverse, capitalize, remove duplicates, count occurrences, and more.
Code Minifier
Minify HTML, CSS, and JavaScript code to reduce file size. Remove whitespace, comments, and optimize code.
Markdown to HTML Converter
Convert Markdown to HTML instantly. Export Markdown content as HTML code for websites and documents.
Data
JSON Formatter
Instantly format, validate, and beautify your JSON data for readability and debugging.
JSON to YAML Converter
Convert between JSON and YAML formats instantly. Perfect for configuration files and data transformation.
CSV to JSON Converter
Convert between CSV and JSON formats instantly. Custom delimiter support and header row handling.
SQL Formatter
Format and beautify SQL queries instantly. Support for multiple SQL dialects with syntax highlighting.
XML Formatter/Validator
Format, validate, and beautify XML documents. Syntax highlighting and error detection included.
Mock Data Generator
Generate realistic mock data for testing and development. Create JSON data with customizable fields and types.
XLSX to CSV Converter
Convert Excel XLSX files to CSV format instantly. Extract data from spreadsheets easily.
JSON to Code Converter
Convert JSON to C#, TypeScript, Go, Java classes and interfaces. Generate code from API responses instantly.
CSV Plotter / Visualizer
Upload CSV files and visualize data with interactive charts. No download required - view charts instantly in your browser.
Utilities
Regex Tester
Test and debug regular expressions in real time with visual match highlighting.
HTTP Playground
Test and debug HTTP requests (GET, POST, PUT, DELETE) with headers, body, and automated tests.
QR Code Generator
Create QR codes from text, URLs, or other data instantly and download them easily.
Domain Lookup
Check DNS records, WHOIS info, MX, SPF, DKIM, DMARC, and HTTP/HTTPS status for domain health insights.
Slug Generator
Convert text into URL-friendly, SEO-optimized slugs automatically.
Case Converter
Convert text between camelCase, PascalCase, snake_case, kebab-case, UPPERCASE, and lowercase.
Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Convert text, images, and files to Base64 format.
URL Encoder/Decoder
Encode and decode URL strings instantly. Handle special characters and query parameters safely.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for multiple timezones and formats.
UUID Generator
Generate UUIDs (Universally Unique Identifiers) instantly. Support for UUID v1 and v4. Bulk generation available.
HTML Entity Encoder/Decoder
Encode and decode HTML entities instantly. Convert special characters to HTML entities and vice versa.
Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal bases instantly. Perfect for programming and debugging.
IP Address Lookup
Look up IP address information including geolocation, ISP, and network details. IPv4 and IPv6 support.
HTTP Status Code Lookup
Look up HTTP status codes with detailed explanations, use cases, and examples. Complete reference guide.
URL Parser
Parse and analyze URLs to extract components like protocol, domain, path, query parameters, and fragments.
Cron Expression Generator
Generate cron expressions visually with a user-friendly interface. Perfect for scheduling tasks and automation.
Image Compressor
Compress images online without losing quality. Reduce file size for faster loading and better performance.
cURL ↔ Fetch Converter
Convert between cURL commands and JavaScript fetch() code instantly. Perfect for API testing and development.
JPG to PNG Converter
Convert JPG/JPEG images to PNG format instantly. Preserve image quality and transparency support.
JPG to PDF Converter
Convert JPG/JPEG images to PDF format instantly. Create PDFs from single or multiple images.
CIDR / Subnet Calculator
Calculate IP address ranges, subnet masks, and network information for CIDR notation and subnets.
Chmod Calculator
Calculate Linux file permissions (chmod) using checkboxes. Convert between numeric (755) and symbolic (rwx-r-x-r-x) formats.
Docker Run to Compose Converter
Convert long docker run commands to docker-compose.yml files. Simplify Docker container management.
Cron Expression Explainer
Paste any cron expression and get a human-readable explanation. Understand when your cron jobs will run.
Unit Converter (Engineering)
Convert between engineering units: Pressure, Torque, Power, Data Size, and more. Essential for engineers and developers.
Regex Generator
Build regular expressions visually using a UI builder. Generate regex patterns for common use cases like emails, URLs, and more.
SVG Optimizer / Viewer
Optimize SVG files by removing unnecessary code, minifying, and cleaning. View and edit SVG files in your browser.
Favicon Generator
Generate favicon sets for all platforms. Create Apple touch icons, Android icons, and web favicons from a single image.
EXIF Data Viewer / Remover
View and remove EXIF metadata from photos. See location, camera model, and other hidden information in images.
Logic Gate Simulator
Visual logic gate simulator. Connect AND, OR, XOR, NOT gates and see the output in real-time.
.htaccess Redirect Generator
Generate .htaccess redirect rules. Create 301 redirects, www to non-www, and other URL redirections.
DNS Propagation Checker
Check DNS propagation status worldwide. See if your domain's DNS changes have propagated across global servers.
SSL Certificate Checker
Check SSL certificate validity, expiration date, and security score. Verify HTTPS certificate status for any domain.
WebP Image Converter
Convert PNG, JPG, JPEG images to WebP format. Optimize images for modern web with better compression.
YouTube Thumbnail Downloader
Download YouTube video thumbnails in all sizes. Extract thumbnails from any YouTube video URL instantly.
Resistor Color Code Calculator
Calculate resistor values from color bands. Visual color code calculator for electronics enthusiasts.
Meme Generator
Create memes instantly. Upload images and add text to create viral memes. Simple canvas-based meme maker.
Design
Color Palette Generator
Generate harmonious, accessible color palettes for UI design and branding.
Box Shadow Gallery
Browse and copy beautiful, ready-to-use CSS box-shadow styles for UI design.
Color Picker
Pick colors visually and get values in HEX, RGB, HSL, and HSV formats. Color preview and format conversion.
CSS Gradient Generator
Create beautiful CSS gradients visually. Generate linear, radial, and conic gradients with color stops and angles.
RGB ↔ HEX Color Converter
Convert between RGB and HEX color codes instantly. Perfect for web development and design.
CSS Flexbox & Grid Generator
Create CSS Flexbox and Grid layouts visually. Drag and arrange boxes, then copy the generated CSS code instantly.
CSS Clip-Path Maker
Create CSS clip-path shapes visually. Generate clip-path code for triangles, polygons, circles, and custom shapes.
Glassmorphism Generator
Generate glassmorphism CSS effects. Create modern frosted glass UI with blur, transparency, and beautiful visuals.
Security
JWT Decoder
Decode and inspect JSON Web Tokens to view headers, claims, and expiration info.
Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes from text instantly. Perfect for checksums and data integrity.
Password Generator
Generate strong, secure passwords instantly. Customizable length, character sets, and complexity options.
RSA Key Generator
Generate RSA public and private key pairs. Client-side generation for security. Perfect for encryption and authentication.
SEO
Meta Tag Generator
Generate SEO-friendly meta tags with live preview for titles, descriptions, and social sharing.
SEO Score Calculator
Analyze website SEO performance and PageSpeed insights with actionable tips.
Open Graph & Twitter Card Preview
Preview how your links appear when shared on WhatsApp, Twitter, LinkedIn, and other social platforms.
Robots.txt & Sitemap Generator
Generate robots.txt and sitemap.xml files for your website. Configure crawler access and site structure.
DevOps
Nginx / Apache Config Generator
Generate Nginx and Apache server configuration files. Create redirects, SSL configs, and proxy settings instantly.
.dockerignore / .gitignore Generator
Generate .gitignore and .dockerignore files for your project. Templates for Node.js, Python, Go, Java, and more.
Social Media
Hashtag Generator
Generate relevant hashtags for social media. Get popular hashtags based on keywords and categories.
Social Media Bio Generator
Generate creative social media bios with emojis and stylish formatting. Create engaging bios for Instagram, Twitter, and more.
Finance
Inflation Calculator
Calculate inflation-adjusted values. See how much money from the past is worth today based on inflation rates.
Loan / Mortgage Calculator
Calculate loan payments, interest, and total amounts. Supports simple interest, compound interest, and mortgage calculations.
Salary Tax Calculator
Calculate salary taxes. Convert between gross and net salary with tax calculations. Perfect for financial planning.
IBAN Validator / Parser
Validate IBAN numbers and identify the country. Check IBAN format and checksum for accuracy.
Academic
Citation Generator
Generate citations in APA and MLA formats. Create properly formatted references for academic papers and articles.
GPA Calculator
Calculate Grade Point Average (GPA). Add courses with credits and grades to calculate your GPA instantly.
Thesis Statement Generator
Generate thesis statements for essays and papers. Create strong thesis statements from topic and arguments.
Plagiarism Checker
Check text similarity between two documents. Compare texts and detect potential plagiarism with similarity scores.