Practical, step-by-step guides for getting more out of free online tools — written for real humans, not search engines.
Turn a wall of minified JSON into readable, validated data in under a minute. Includes the 5 most common JSON errors — with before-and-after fixes — and how to read validation errors like a pro.
JSONTutorialStop retyping text by hand. The four case types explained, when to use each, 4 mistakes people keep making — plus a free one-click case converter.
Text ToolsTutorialShrink images 60–80% with no visible difference: the resize-first workflow, the 75–80 quality rule, WebP vs JPEG vs PNG, and 4 mistakes that ruin image quality.
ImagesTutorialNisab explained with current gold and silver prices, the 2.5% rule, and worked examples for cash, gold, and stocks — with a free zakat calculator.
CalculatorsTutorialWhy length beats complexity, the two methods that actually work (password manager + passphrases), real examples, and 5 mistakes people keep making — with a free password generator.
SecurityTutorialStatic vs dynamic codes explained, what to link, where to place them for real scans, and 5 design rules — with a free QR code generator.
BusinessTutorialWord, Google Docs, PDFs, web pages, and emails — the exact steps for each, what actually counts as a word, and a free online counter.
WritingTutorialLearn how to calculate your BMI with the formula, worked examples, and a BMI chart. Use our free BMI calculator for instant results.
CalculatorsTutorial