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Guides and tutorials on image conversion, file formats, developer tools and more.

Jul 7, 2026

URL Encoding Explained: Percent-Encoding, Spaces (%20) & How to Encode Online

What URL encoding is, how percent-encoding works, how to encode a space, &, ? and non-ASCII text, when to encode, and how to encode or decode a URL online.

What Is a JWT? How JSON Web Tokens Work (and How to Read One)

The three parts of a JWT, how it's used for stateless authentication, common claims, signed vs. encrypted, and the security rules that actually matter.

Word & Character Count Guide: Limits for Every Platform (2026)

Word count vs character count, how Chinese and Japanese text is counted, reading time, and a cheat sheet of character limits for X, meta tags and Instagram.

camelCase, snake_case and kebab-case: A Naming Conventions Guide

A practical guide to the common identifier naming styles — camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE — and where each is used.

Is MD5 Still Safe? MD5 vs. SHA-256 vs. SHA-512 Explained

Why MD5 is considered broken, how SHA-256 and SHA-512 differ, and how to use hashes correctly for file verification and password storage.

The Complete Guide to Unix Timestamps (Seconds, Milliseconds, Time Zones)

What a Unix timestamp is, how to tell seconds from milliseconds, how time zones and UTC fit in, and how to convert timestamps to dates with examples.

Is Base64 Encryption? Encoding vs. Encryption Explained

Base64 is often mistaken for encryption. Learn the real difference between encoding and encryption, what Base64 is actually for, and when to use each.

What Is JSON? A 5-Minute Guide to Structure and Common Errors

Understand JSON in five minutes: what it is, its data types, the syntax rules that trip people up, and how to fix the most common JSON errors.

10 Free Online Tools Every Developer Should Bookmark (2026)

A curated checklist of 10 free, privacy-friendly online tools — JSON formatting, Base64, hashing, UUIDs and more — that save developers time every day.