Developer Blog
Tutorials, deep dives, and practical guides on the tools and concepts developers use every day.
State of AI Crawlers 2026: We Scanned the Top 100 Websites
We scanned the top 100 websites. Average AI readiness score: 30/100. 60% serve different content to AI bots vs browsers. Full data + methodology.
AIIs Your Website AI-Ready? A Complete Guide for 2026
Your website either works with AI systems or gets ignored by them. A practical guide to robots.txt for AI bots, llms.txt, and the 5 categories that determine your AI readiness.
AIWhat is llms.txt? The New Standard AI Systems Use to Understand Your Website
llms.txt is a plain text file that tells AI systems what your website does. Learn the format, see examples from Stripe and Vercel, and create your own in minutes.
JSONHow to Format JSON: A Complete Guide to Pretty-Printing and Validation
Learn why JSON formatting matters, how to catch common syntax errors, and the fastest ways to pretty-print JSON data for debugging.
EncodingWhat Is Base64 Encoding? When and Why You Should Use It
Understand how Base64 turns binary data into ASCII text, where it shows up in the real world, and when it is the right tool for the job.
SecurityJWT Tokens Explained: Structure, Security, and Decoding
Break down the three parts of a JSON Web Token, understand how signing works, and learn to inspect tokens without a library.
CSSCSS Flexbox Guide: Properties, Patterns, and Practical Examples
Master the Flexible Box Layout with clear explanations of every property, common layout patterns, and code you can copy straight into your project.
NetworkingDNS Lookup Explained: How Domain Name Resolution Actually Works
Trace a DNS query from your browser to the root servers. Learn about record types, TTL, propagation, and how to troubleshoot DNS issues.
Developer ToolsRegex Tutorial for Beginners: Patterns, Syntax, and Real-World Examples
Get comfortable with regular expressions. This guide covers the syntax from scratch, with practical patterns you will actually use in production code.
SecurityHow to Check an SSL Certificate: A Developer's Guide to TLS Verification
Learn what SSL/TLS certificates do, how to verify them, and how to diagnose common certificate errors before they hit your users.
CryptographyHash Functions Explained: MD5, SHA-256, and When to Use Each
Understand how cryptographic hash functions work, compare popular algorithms, and learn which one is right for passwords, checksums, and data integrity.
ReportWe Graded 20 of the Internet's Biggest Websites. Amazon Got an F.
GitHub scored an A, Vercel an A-. Meanwhile Amazon, Google, and Reddit got D's and F's. Here's what we found and why.