Blog

What aspect ratio means, the common ones (16:9, 4:3, 1:1, 9:16, 21:9) and where each is used, and how to resize images and video without stretching them.

What actually makes a password strong: length, entropy, and avoiding patterns. How attackers crack weak ones, and how to test yours privately.

How to convert a JSON array of objects to CSV and parse CSV back to JSON: what maps to what, the escaping gotchas, and a free private converter.

JSON and YAML hold the same data in different syntax. The real differences, when to use each, the indentation gotchas, and how to convert between them.

The Pomodoro Technique in practice: the focus/break cycle, why it works, the mistakes that ruin it, and a free online Pomodoro timer to run it.

A printable bubble (scantron-style) answer sheet lets you mark multiple-choice tests fast and reuse question papers. How it works, plus a free editable Word.docx.

You don't need a paid overlay subscription to look professional. A round-up of free browser-source tools for OBS: goal bars, tickers, countdowns and more.

Free, no-signup tools that cut teacher prep time: editable Word templates, printable paper, and classroom utilities that keep student data on your device.

A cahier de textes is the official log of what a class was taught and what's set as homework. What goes in it, why it matters, and a free editable Word.docx.

A gradebook you can type straight into, not a locked PDF. When a Word gradebook beats a spreadsheet, how to set one up, and a free editable.docx template.