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Practical guides on encoding, hashing, data formats, and the tools developers actually use.

FinanceMar 22, 20267 min read

UK Take-Home Pay 2025/26: What Changed and What It Means for You

A breakdown of the 2025/26 tax year changes, frozen thresholds, fiscal drag, and worked examples showing your actual take-home pay at every salary level.

Developer GuidesMar 10, 20266 min read

Base64, URL Encoding, and JWT: A Developer's Quick Reference

When to use Base64 vs URL encoding, how JWTs actually work, and the encoding mistakes that break production APIs.

Developer GuidesMar 8, 20267 min read

MD5, SHA-256, bcrypt: Which Hash Do You Actually Need?

A no-nonsense breakdown of hash functions. What each one does, when to use it, and the one you should never use for passwords.

Developer GuidesMar 5, 20266 min read

JSON vs YAML vs CSV vs XML: Pick the Right Format

Each data format exists for a reason. Here's when to reach for each one, how to convert between them, and the gotchas that trip people up.

Developer GuidesMar 15, 20266 min read

Regex Cheat Sheet: Common Patterns Every Developer Needs

A practical reference of regex patterns for email validation, password strength, phone numbers, dates, and more. Copy-paste examples included.

Developer GuidesMar 14, 20265 min read

Understanding Cron Expressions: A Practical Guide

Learn cron syntax from the ground up. Covers the five-field format, common schedules, platform differences, and the mistakes that trip people up.

Health & WellnessMar 13, 20266 min read

BMI Chart: What Your Number Actually Means

A clear explanation of BMI categories, the formula behind the number, the limitations of BMI, and when other health metrics are more useful.

FinanceMar 12, 20266 min read

Compound Interest Explained: How Your Money Grows Over Time

The compound interest formula broken down with real examples, the Rule of 72, and practical strategies for making compounding work in your favor.

Developer GuidesMar 11, 20265 min read

UUID vs Nano ID vs CUID: Choosing the Right ID Format

Compare UUID v4, UUID v7, Nano ID, and CUID2. Learn the tradeoffs around length, sortability, collision resistance, and database performance.

FinanceMar 22, 20268 min read

Will You Ever Repay Your Student Loan? Here's How to Find Out

Most Plan 2 borrowers will never repay in full. Learn how UK student loan repayment works, see worked examples at different salaries, and find out whether overpaying makes sense.

ReferenceMar 9, 20266 min read

Complete Guide to Metric and Imperial Conversions

Reference tables and mental math tricks for converting between metric and imperial units. Covers length, weight, temperature, volume, and area.