Practical articles on JSON, CSS, Base64, SEO, structured data and more. Each guide pairs real code examples with free tools so you can go from reading to shipping in minutes.
Everything you need to know about HTML meta tags — title, meta description, Open Graph (OGP), Twitter Card, robots, canonical, and hreflang. Includes copy-ready templates and SEO best practices.
Learn what keyword density means for SEO, how to calculate it, the ideal 1–3% range, the risks of keyword stuffing, and how to use LSI keywords naturally. Includes a free keyword density checker tool.
Everything about hreflang — correct syntax, x-default usage, common implementation mistakes, and how Google processes alternate tags. Includes copy-ready code snippets for multilingual and multi-regional sites.
How readability affects SEO — Flesch Reading Ease, sentence length, paragraph structure, and actionable tips to improve your content score. Includes a free readability checker tool.
A practical guide to CSV files. Learn the format, how to handle commas inside values, why Excel mangles UTF-8 on Mac, and when converting to JSON makes sense — with code examples in JS and Python.
Understand the three color formats used in CSS — HEX, RGB, and HSL. Covers when to use each, how to add opacity with rgba() and hsla(), 8-digit hex with alpha, and converting between formats.
A beginner's guide to Markdown — the lightweight syntax behind GitHub READMEs, Notion, and dev.to. Includes a full cheat sheet, rendered HTML examples, and notes on GitHub Flavored Markdown differences.
Timezone bugs are subtle and painful. Learn the difference between UTC offsets and named zones, why you should always store UTC in your database, and how to handle DST correctly in JavaScript and Python.
Without UTM parameters, your analytics just shows "Direct." Learn all five UTM parameters, build properly tagged campaign URLs, and find your results in GA4's Traffic Acquisition report — with real examples.