Quick, practical guides for PDFs, images, data formats, SEO basics, and everyday dev tasks.
How to shrink images for web and email while keeping them sharp—plus when to pick JPG, PNG, or WebP.
Avoid garbled layouts. Best practices for converting PDF ↔ DOCX with tables, fonts, and images intact.
Make QR codes that scan quickly in real life. Contrast, quiet zone, short URLs, and print sizing cheat sheet.
Trailing commas, quotes, and encoding: how to spot and fix JSON issues in seconds.
Stop breaking data. Understand commas vs semicolons, UTF-8, and header rows—plus a safe conversion flow.
Epoch seconds vs milliseconds, UTC offsets, and how to sanity-check results across time zones.
Spaces, special characters, and query strings—what to encode and what to leave alone.
Emails, phone numbers, ISO dates, and more—battle-tested regex you can paste right now.
Combine chapters, extract pages, and keep file sizes under control—clean results, no branding.
Diceware vs random strings, length over complexity, and when to rotate passwords.
