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Guides and explainers on fast, free online tools that work in your browser.

• How to Pick a Color PaletteAugust 26, 2026A repeatable five-step method: start with one colour, apply a harmony rule, build a neutral ramp, assign roles, and check contrast. No design degree required.
• camelCase vs snake_case (and the Rest)August 19, 2026A field guide to the naming conventions used in code and on the web, where each is the norm, why converting between them is trickier than it looks, and why consistency beats the choice.
• JSON Explained for BeginnersAugust 12, 2026What JSON is, the six value types, a full annotated example, the syntax rules that trip people up, how to read a parser error, and how JSON differs from its lookalikes.
• Common Unit Conversions Cheat SheetAugust 5, 2026The everyday metric-imperial conversions worth memorising, the exact factors behind them, fast mental-maths approximations, and the traps that catch people out.
• What Is a QR Code and How It WorksJuly 29, 2026How a grid of squares stores data, what each part of the pattern does, static versus dynamic codes, why error correction lets a damaged code still scan, and how to make one that works in print.
• How to Create a Strong PasswordJuly 22, 2026What actually makes a password hard to crack, why length beats symbols, how attackers really get in, and the habits that matter more than the password itself.