Free Online Tools

Convert CSV files to beautifully formatted Markdown tables. Perfect for documentation and GitHub READMEs.

Convert JSON data to readable Markdown format. Great for API documentation and data visualization.

Convert HTML content to clean Markdown. Ideal for migrating content or cleaning up web pages.

Convert Markdown to HTML. Transform your Markdown content into clean, valid HTML code.

Preview and print Markdown documents with beautiful formatting. Render Markdown with syntax highlighting and export to PDF.

Encode text to Base64 or decode Base64 strings. Supports UTF-8 text encoding.

Encode and decode URLs online. Convert special characters to URL-safe format.

Encode and decode HTML entities. Convert special characters to HTML entities.

Convert text to hexadecimal or binary and back. Useful for debugging and data analysis.

Decode and inspect JSON Web Tokens (JWT). View header, payload, and expiration information.

Escape and unescape backslash special characters. Convert newlines, tabs, quotes, and other escape sequences.

Convert images to Base64 strings and Data URLs. Encode PNG, JPG, GIF, and other image formats to base64.

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text.

Convert colors between HEX, RGB, HSV, and CMYK formats with visual preview.

Convert numbers between decimal, binary, hexadecimal, octal, and Roman numerals.

Convert CSS units between px, rem, em, pt, %, vw, and vh. Calculate responsive units with custom base font size and viewport settings.

Convert between YAML and JSON formats. Transform configuration files and data structures.

Convert JSON to CSV or CSV to JSON. Bidirectional data converter with custom delimiter support for spreadsheet import and export.

Convert Unix timestamps to human-readable dates and vice versa. Support for seconds and milliseconds.

Convert IPv4 addresses to decimal, binary, and hexadecimal. Analyze IP class and check if private or public.

Extract text from PDF files online for free. Convert PDF documents to plain text with page-by-page extraction.

Convert Microsoft Word documents (.docx) to clean HTML. Extract text, headings, lists, tables, and images from Word files.

Convert text between different cases: UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.

Count words, characters, sentences, and paragraphs. Get reading and speaking time estimates.

Generate Lorem Ipsum placeholder text for your designs and mockups.

Test and debug regular expressions in real-time. See matches highlighted with group information.

Compare two texts and see the differences highlighted. Perfect for code reviews and document comparison.

Sort lines alphabetically, remove duplicates, remove empty lines, reverse, shuffle, and trim whitespace from text lines.

Generate random UUIDs (v4) for databases, APIs, and unique identifiers.

Generate strong, secure random passwords with customizable options.

Generate random strings with customizable length and character sets. Create secure alphanumeric strings for testing and development.

Generate markdown tables with a visual editor. Create tables for GitHub, documentation, and any markdown content.

Generate and parse cron expressions with a visual editor. Build crontab schedules with presets and human-readable descriptions.

Generate QR codes for URLs, text, and more. Customize size, colors, and error correction level. Download as PNG.

Format, beautify, minify, and validate JSON data with syntax error detection.

Format, beautify, minify, and validate SQL queries with syntax validation and keyword case options.

Minify HTML code by removing whitespace and comments. Reduce file size and improve load times.

Minify CSS code by removing whitespace, comments, and redundant code. Optimize stylesheets for production.

Minify JavaScript code by removing whitespace and comments. Reduce file size for faster loading.

Find and validate XML sitemaps for any website. Check sitemap health and discover sitemap locations.

Extract all URLs from XML sitemaps. Export URLs for analysis, SEO audits, or content migration.

Crawl and extract all URLs from a website. Perfect for site audits and link analysis.

Generate SEO meta tags including Open Graph and Twitter Card tags. Optimize your pages for search engines and social media.

Create robots.txt files for your website. Control how search engines crawl and index your content.

Convert text to URL-friendly slugs. Create clean, SEO-friendly URLs for your content.

Build UTM tracking URLs for Google Analytics campaigns. Generate and parse UTM parameters for marketing links.

Complete guide to social media image sizes for Facebook, Instagram, Twitter, LinkedIn, and YouTube. Get recommended dimensions and aspect ratios.

Calculate the return on investment for implementing a chatbot. Estimate cost savings and efficiency gains.

Calculate and convert aspect ratios for images and videos. Find ratios like 16:9, 4:3, 1:1. Resize while maintaining proportions.

Create professional HTML email signatures. Customize with your info, social links, and branding.

See which GitHub repositories are gaining the most stars today, this week, or this month. Filter trending open source projects by language.