Free Online Tools
Powerful tools for developers, marketers, and teams. Convert data formats, analyze websites, and more. All tools work in your browser with no signup required.
Convert to Markdown
Convert various file formats to Markdown
CSV to Markdown
Convert CSV files to beautifully formatted Markdown tables. Perfect for documentation and GitHub READMEs.
JSON to Markdown
Convert JSON data to readable Markdown format. Great for API documentation and data visualization.
HTML to Markdown
Convert HTML content to clean Markdown. Ideal for migrating content or cleaning up web pages.
Markdown to HTML
Convert Markdown to HTML. Transform your Markdown content into clean, valid HTML code.
Markdown Printer
Preview and print Markdown documents with beautiful formatting. Render Markdown with syntax highlighting and export to PDF.
Encoding & Decoding
Encode and decode text in various formats
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings. Supports UTF-8 text encoding.
Image to Base64 Converter
Convert images to Base64 strings and Data URLs. Encode PNG, JPG, GIF, and other image formats to base64.
URL Encoder/Decoder
Encode and decode URLs online. Convert special characters to URL-safe format.
HTML Entity Encoder/Decoder
Encode and decode HTML entities. Convert special characters to HTML entities.
Hex & Binary Converter
Convert text to hexadecimal or binary and back. Useful for debugging and data analysis.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT). View header, payload, and expiration information.
Backslash Escape/Unescape
Escape and unescape backslash special characters. Convert newlines, tabs, quotes, and other escape sequences.
Hash & Cryptography
Generate hashes and cryptographic operations
Converters
Convert between different formats and units
Color Converter
Convert colors between HEX, RGB, HSV, and CMYK formats with visual preview.
Number Base Converter
Convert numbers between decimal, binary, hexadecimal, octal, and Roman numerals.
CSS Unit Converter
Convert CSS units between px, rem, em, pt, %, vw, and vh. Calculate responsive units with custom base font size and viewport settings.
YAML ↔ JSON Converter
Convert between YAML and JSON formats. Transform configuration files and data structures.
JSON to CSV Converter
Convert JSON to CSV or CSV to JSON. Bidirectional data converter with custom delimiter support for spreadsheet import and export.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for seconds and milliseconds.
IP Address Converter & Analyzer
Convert IPv4 addresses to decimal, binary, and hexadecimal. Analyze IP class and check if private or public.
Text Tools
Text manipulation and analysis tools
Text Case Converter
Convert text between different cases: UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
Word Counter
Count words, characters, sentences, and paragraphs. Get reading and speaking time estimates.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text for your designs and mockups.
Regex Tester
Test and debug regular expressions in real-time. See matches highlighted with group information.
Text Diff Checker
Compare two texts and see the differences highlighted. Perfect for code reviews and document comparison.
Line Tools
Sort lines alphabetically, remove duplicates, remove empty lines, reverse, shuffle, and trim whitespace from text lines.
Generators
Generate random data and identifiers
UUID Generator
Generate random UUIDs (v4) for databases, APIs, and unique identifiers.
Password Generator
Generate strong, secure random passwords with customizable options.
Random String Generator
Generate random strings with customizable length and character sets. Create secure alphanumeric strings for testing and development.
Markdown Table Generator
Generate markdown tables with a visual editor. Create tables for GitHub, documentation, and any markdown content.
Cron Expression Generator
Generate and parse cron expressions with a visual editor. Build crontab schedules with presets and human-readable descriptions.
QR Code Generator
Generate QR codes for URLs, text, and more. Customize size, colors, and error correction level. Download as PNG.
Formatters & Validators
Format and validate code and data
JSON Formatter & Validator
Format, beautify, minify, and validate JSON data with syntax error detection.
SQL Formatter & Beautifier
Format, beautify, minify, and validate SQL queries with syntax validation and keyword case options.
HTML Minifier
Minify HTML code by removing whitespace and comments. Reduce file size and improve load times.
CSS Minifier
Minify CSS code by removing whitespace, comments, and redundant code. Optimize stylesheets for production.
JavaScript Minifier
Minify JavaScript code by removing whitespace and comments. Reduce file size for faster loading.
SEO Tools
Tools for SEO and website analysis
Sitemap Finder & Checker
Find and validate XML sitemaps for any website. Check sitemap health and discover sitemap locations.
Sitemap URL Extractor
Extract all URLs from XML sitemaps. Export URLs for analysis, SEO audits, or content migration.
Website URL Extractor
Crawl and extract all URLs from a website. Perfect for site audits and link analysis.
Meta Tag Generator
Generate SEO meta tags including Open Graph and Twitter Card tags. Optimize your pages for search engines and social media.
Robots.txt Generator
Create robots.txt files for your website. Control how search engines crawl and index your content.
URL Slug Generator
Convert text to URL-friendly slugs. Create clean, SEO-friendly URLs for your content.
UTM Link Builder
Build UTM tracking URLs for Google Analytics campaigns. Generate and parse UTM parameters for marketing links.
Social Media Image Size Guide
Complete guide to social media image sizes for Facebook, Instagram, Twitter, LinkedIn, and YouTube. Get recommended dimensions and aspect ratios.
Calculators & Generators
Useful calculators and content generators
Chatbot ROI Calculator
Calculate the return on investment for implementing a chatbot. Estimate cost savings and efficiency gains.
Email Signature Generator
Create professional HTML email signatures. Customize with your info, social links, and branding.
Aspect Ratio Calculator
Calculate and convert aspect ratios for images and videos. Find ratios like 16:9, 4:3, 1:1. Resize while maintaining proportions.