Free Online Developer Tools — Binary, Text, SEO & Web Calculators
25 professional-grade tools that run 100% in your browser. No data collection. No registration. Completely free.
Photo by Alexandre Debiève on Unsplash
Binary Converters
Convert between text, binary, decimal, hexadecimal, and octal number systems. Includes Base64 encoding, hash generation, and Morse code translation.
Text & Data Converters
Transform JSON, CSV, XML, YAML, Markdown, and HTML. Change text case, compare text differences, and encode URLs with professional-grade tools.
SEO Tools & Analyzers
Generate SERP previews, schema markup, and meta tags. Analyze keyword density and create robots.txt files to optimize your search engine visibility.
Link & URL Tools
Build UTM tracking links, generate QR codes, extract links from HTML, debug social cards, and create SEO-friendly URL slugs for your projects.
Web Development Calculators
Convert colors between formats, generate CSS gradients, test regular expressions, convert timestamps, and generate secure passwords for your applications.
25
Professional Tools
100%
Client-Side
Zero
Data Collection