Explore our complete collection of 202 free online tools. No signup, no installation — all tools work in your browser.
Convert text between upper, lower, title, and sentence case
Generate placeholder text for your designs and mockups
Count characters, words, and bytes in your text
Remove duplicate lines from text while preserving order
Generate strong, random passwords with customizable options
Analyze and preview your page meta tags
Check keyword density and distribution in your content
Preview how your page looks in search results
Check SSL certificate validity and details
Generate and validate robots.txt files
Format, validate, and beautify JSON data
Encode and decode Base64 strings instantly
Generate random UUIDs / GUIDs for your projects
Minify CSS files to reduce page load time
Beautify and format JavaScript code
Write HTML and preview it in real time
Quickly calculate percentages, tips, and discounts
Calculate monthly payments, interest, and amortization
Calculate your Body Mass Index based on height and weight
Convert between currencies using live exchange rates
Convert between length, weight, volume, temperature, area, and speed units
Calculate exact age in years, months, and days from date of birth
Calculate GST inclusive and exclusive amounts quickly
Add password protection to PDF files with AES encryption