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Deep technical articles on APIs, security, debugging, and developer tooling.
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UUID v4 Breaks Database Performance at Scale — What UUID v7 Changed and Why It's Still Not the Default
Number Base Converter — Binary, Octal, Decimal & Hex Explained
Learn how binary, octal, decimal, and hexadecimal number systems work, when each is used in programming, and how to convert between them instantly with a free number base converter.
JWT Decoder — Inspect Any JSON Web Token Instantly
Learn what's inside a JSON Web Token, how to read the header, payload, and expiration claims, and how to use a free JWT decoder to debug authentication issues instantly.
Base64 Encoder/Decoder — How It Works & Real Developer Uses
Learn what Base64 encoding is, how it works, why it's used in JWTs, HTTP headers, data URIs, and email attachments — and how to encode or decode any string instantly with a free tool.
UUID Generator — Generate Unique Identifiers for Any Application
Learn what UUIDs are, the differences between versions 1, 4, and 7, when to use UUIDs over auto-increment integers, and how to generate them instantly with a free UUID generator.
Regex Tester — Write & Debug Regular Expressions with Live Highlighting
Learn how to write and debug regular expressions using a live tester — with syntax reference, real examples for email validation, log parsing, and URL extraction, and tips on greedy vs. lazy matching.
JSON Unescape & Cleaner — Fix Escaped and Double-Encoded JSON Instantly
Learn what causes JSON to become escaped or double-encoded, how to recognise it, and how to use a free JSON unescape tool to clean up messy JSON from logs, APIs, and databases instantly.
Bcrypt Generator — How to Hash & Verify Passwords Correctly
Learn what bcrypt is, how the cost factor and salt work, how bcrypt hashes are structured, and how to use a free bcrypt generator to test and verify password hashes in your development workflow.
Colour Converter — HEX, RGB, HSL, HSV & CMYK Explained
Learn the difference between HEX, RGB, HSL, HSV, and CMYK colour formats, when each is used, and how to convert between them instantly with a free colour converter for web and design work.
Timestamp Converter — Unix Time to Date & Date to Timestamp
Learn what Unix timestamps are, why they're used everywhere in software, how to convert them to human-readable dates, and how to avoid the seconds vs. milliseconds confusion.
URL Encoder/Decoder — Percent-Encode & Decode URLs Instantly
Learn why URL encoding exists, how percent-encoding works, the difference between %20 and + for spaces, and how to encode and decode URLs correctly for APIs and query strings.
REST API Checker — Test Any REST API Instantly in Your Browser
Learn how to test REST APIs directly in your browser — send GET, POST, PUT, and DELETE requests, add auth headers, inspect responses, and debug API issues without installing any tools.
Hash Generator — MD5, SHA-1, SHA-256 & SHA-512 Explained
Learn how hash functions work, the differences between MD5, SHA-1, SHA-256, and SHA-3, which algorithm to use for file verification vs. passwords, and how to generate hashes instantly with a free tool.
