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Short, practical guides to the concepts behind our tools — networking, developer, and AI topics explained in plain English.
What Is an IP Address?
Learn what an IP address is, the difference between IPv4 and IPv6, public vs private IPs, and how geolocation works — in plain English.
Networking · 5 min readUnderstanding DNS Records
A clear guide to DNS and its record types — A, AAAA, MX, TXT, NS, CNAME — and how domain names get resolved to IP addresses.
Developer · 4 min readWhat Is a JWT (JSON Web Token)?
Understand JSON Web Tokens: the header, payload, and signature, how JWTs are used for authentication, and why you should never trust an unverified token.
Developer · 3 min readBase64 Encoding Explained
What Base64 is, why it exists, how it differs from encryption, and common uses like data URIs and email attachments — with practical examples.
Networking · 5 min readCIDR & Subnets Explained
Understand CIDR notation, subnet masks, network and broadcast addresses, and how to calculate how many hosts a subnet holds.