Blog
Guides and deep dives on developer tools, data formats and everyday coding tasks.
Unique IDs Explained for Developers: Types, Tradeoffs & When to Use Each
Unique IDs explained for developers: UUID, ULID, Snowflake & auto-increment compared with real code examples, gotchas, and when to use each type.
Binary, Octal and Hexadecimal Numbers Explained Simply
Learn binary, octal and hexadecimal numbers explained simply — with worked examples, a conversion table, and common gotchas to avoid. No maths degree
How to Find Your Exact Age in Years, Months & Days
Find your exact age in years, months, and days with this step-by-step guide. Includes a worked example, JavaScript code, leap year gotchas, and a free
How Many Days Between Two Dates – Quick Answer + Examples
Learn how to calculate days between two dates by hand, in Excel, Python, or JavaScript. Includes leap year gotchas, DST traps, and a free calculator tool.
Common Data Formats Every Developer Should Know (2024 Guide)
JSON, YAML, CSV, XML and more — learn which common data formats fit which job, avoid the top mistakes, and convert between them in seconds.
Writing Clean, Readable SQL Queries: A Practical Guide
Learn how writing clean, readable SQL queries saves time and reduces bugs. Real before-and-after examples, CTE tips, and a free formatter tool.
URL Slugs and Why They Matter for SEO (Plain Guide)
URL slugs affect rankings, click-through rates, and link equity. Learn what makes a great slug, see a real code example, and avoid the mistakes that hurt
Metric vs Imperial Units Explained: The Complete Guide
Metric vs imperial units explained clearly — see the key differences, exact conversion formulas, common mistakes, and free tools to convert in seconds.
PPF vs EPF vs FD: Where to Grow Your Savings in 2025
PPF, EPF, or FD — which grows your savings fastest after tax? Clear comparison, worked example, and a simple guide to pick the right option for your goals.
What Base64 Is and Why Developers Use It (Plain-English Guide)
Base64 encodes binary data as plain text so it travels safely through text-only systems. Learn how it works, real use cases, and common gotchas — with a
Hex, RGB and HSL Colour Values Explained Simply
Hex, RGB and HSL colour values explained side by side with real CSS examples. Learn which format to use and when, and how to convert between them.
Regular Expressions Explained for Beginners (Plain English)
Regular expressions explained for beginners in plain English. Learn the core symbols, see a real Python example, and avoid the most common mistakes. Free
How to Work Out Percentages the Easy Way (With Examples)
Learn how to work out percentages the easy way with one simple formula, mental math shortcuts, and worked examples. Includes a free percentage calculator.
How to Create Strong, Secure Passwords (That Actually Hold Up)
Learn how to create strong, secure passwords with step-by-step tips, a Python code example, and free tools. Stop reusing weak passwords — start today.
What Your BMI Really Tells You (And What It Misses)
BMI shows your weight-to-height ratio in seconds — but it misses body fat, muscle, and more. Learn what your BMI really tells you and how to read it
SIP vs Lumpsum Investing: Which Is Better for You?
SIP vs lumpsum investing — which wins? Get a clear answer, a worked example, and the key gotchas. Use our free calculators to model your own returns.
How Many Calories Do You Need a Day? (With Real Examples)
Find out how many calories you need a day with a step-by-step worked example, activity-level table, and free TDEE calculator. Clear, accurate, and fast.
How Home Loan EMI Actually Works – Plain-English Guide
Understand how home loan EMI actually works with a real worked example, amortisation table, and tips to cut total interest. Includes free EMI calculator.
What Is JSON and How to Use It: A Plain-English Guide
Learn what JSON is, how to read and write it, and how to use it in real projects. Includes examples, common mistakes, and free tools to validate and
Old vs New Income Tax Regime in India: Which Saves You More?
Old vs new income tax regime in India explained with real examples, slab tables & gotchas. See which regime saves you more in FY 2025-26 — with a free
CSV, TSV and Excel Files Explained (With Real Examples)
CSV, TSV and Excel files explained simply — see the real differences, common gotchas like encoding errors and lost zeros, and when to use each format.
How Foreign Exchange Rates Work – A Plain-English Guide
Learn how foreign exchange rates work, what moves them, and how to avoid costly mistakes. Clear examples, a comparison table, and practical tools included.
Essential SEO Meta Tags Explained (With Real Code Examples)
Learn which essential SEO meta tags actually move rankings, see a copy-pasteable HTML template, and avoid the mistakes that quietly hurt your traffic.
How to Shrink Image Files for the Web (and Why It Matters)
Learn how to shrink image files for the web and cut load times by 90%. Covers WebP, Sharp, ImageMagick, and free online tools — with real examples.
PNG vs JPG vs WebP: Which Image Format Should You Use?
JPG for photos, PNG for transparency, WebP for the smallest files. Compare PNG vs JPG vs WebP with a real code example and pick the right format fast.
How to Merge, Split and Organise PDF Files (Easy Guide)
Merge, split and organise PDF files using free tools or Python in minutes. Includes step-by-step guide, code examples, and tips to avoid common mistakes.
How QR Codes Work and Where to Use Them (Plain-English Guide)
Learn how QR codes work, where to use them, and how to generate one in Python. Covers scanning, error correction, common mistakes, and privacy in plain