How a Secret Santa Link Can Hide the Match From the Server
Our Secret Santa generator keeps each match inside the link, after the # sign, where browsers never send it to a server. How it works, what it protects against, and what it doesn’t.
Guides
Why Your QR Code Stopped Working (and How to Make One That Never Expires)
The flyers are printed, the table cards are on every table, the poster is on the wall — and one morning someone tells you the QR code leads to a “this code has been deactivated” page, an upgrade offer, or nothing at all. Nobody changed the print. So what happened? In most cases the answer … Read more
Why JSON Tools Change Your Numbers — and How to Keep Large IDs Exact
You paste an API response into a JSON tool, format it, and copy it back. Everything looks the same — until a database lookup fails because the order ID 1234567890123456789 has quietly become 1234567890123456800. Nothing threw an error, no warning appeared, and the last two digits are simply gone. This is one of the most … Read more
Regular Expressions for Beginners: A Practical Guide with Examples
What Are Regular Expressions? Regular expressions (regex or regexp) are sequences of characters that define search patterns. They are one of the most powerful tools in a developer’s toolkit — used for text matching, validation, extraction, and replacement across virtually every programming language and text editor. While regex has a reputation for being cryptic, understanding … Read more
CSS Colors Demystified: HEX, RGB, HSL and When to Use Each
The Three Color Systems Every Web Developer Needs Color is one of the most fundamental aspects of web design, yet the variety of color formats in CSS can be confusing. Should you use HEX codes, RGB values, or HSL notation? Each format has distinct advantages, and understanding when to use each will make you a … Read more
Base64 Encoding Explained: What It Is, How It Works, and When to Use It
What Is Base64 Encoding? Base64 is a binary-to-text encoding scheme that converts binary data into a string of ASCII characters. It uses a set of 64 characters — the uppercase letters A-Z, lowercase letters a-z, digits 0-9, and two additional characters (typically + and /) — plus = for padding. The name “Base64” simply refers … Read more
Password Security in 2026: Best Practices for Developers and Users
Why Password Security Still Matters Despite the rise of biometric authentication, passkeys, and multi-factor authentication, passwords remain the primary authentication mechanism for most online services. According to recent security reports, over 80% of data breaches involve compromised credentials — and weak or reused passwords are the number one cause. Whether you are a developer building … Read more
Understanding JSON: A Complete Beginner’s Guide
What Is JSON? JSON (JavaScript Object Notation) is a lightweight data interchange format that has become the backbone of modern web communication. Despite its name suggesting a connection to JavaScript, JSON is language-independent and supported by virtually every programming language in use today — including Python, Java, C#, Go, Ruby, PHP, and many more. Created … Read more