tutorial
7 articles about tutorial.
Base64 encoding explained: what it is, when to use it, and when not toBase64 turns binary data into text so it can travel safely through text-only channels. Here's how it works, where it's used, and the mistakes developers commonly make with it.14 May 2026 · 8 min read
Regex cheat sheet: the patterns every developer needs to knowA practical regex reference covering character classes, quantifiers, groups, lookaheads, and the 12 most useful patterns for everyday development — with live examples.14 May 2026 · 8 min read
How to Merge PDFs Without Uploading Them Anywhere (2026 Guide)Combine multiple PDFs into one — in your browser, without uploading them to any server. Works for invoices, contracts, bank statements, and scanned IDs.11 May 2026 · 8 min read
PNG vs JPG vs WebP vs AVIF: Which Image Format Should You Use in 2026?A practical 2026 guide to choosing between PNG, JPG, WebP, and AVIF — with file-size benchmarks, browser support, and when each one wins.11 May 2026 · 8 min read
How to Send a WhatsApp Message Without Saving the Number (2026 Guide)Three reliable ways to message someone on WhatsApp without adding them to your contacts — using wa.me links, QR codes, and click-to-chat buttons.8 May 2026 · 8 min read
Cookie consent in 2026: what changed and what site owners need to doGoogle Consent Mode v2, IAB TCF v2.2, and the EU's Digital Markets Act all hit production in the last 18 months. Here's what site operators actually need to ship to stay compliant — and keep AdSense revenue.5 May 2026 · 8 min read
How to format JSON without uploading data anywhere — a 2026 guideMost online JSON formatters quietly send your data to a server. Here's why that's risky for production data, and how to format JSON entirely in your browser.3 May 2026 · 7 min read