Guides.
Short reads on tools, AI, and working smarter. No newsletter, no paywall — just useful.
RSS feedWhy AI Tools Struggle with PDFs — and How Markdown Fixes It
PDFs lose their structure when you hand them to an AI. Vision processing costs 750 tokens per page. Markdown preserves headings, bullets, and hierarchy — for 70–80% fewer tokens.
Why Browser-Based Tools Are Safer Than File Upload Sites
When you upload a contract to a free converter, where does it go? Many "free" tools monetise your files. Browser-based processing never sends them anywhere.
How to Shrink a PDF Without Ruining the Quality
Three things inflate PDF sizes: embedded images, font files, and revision bloat. Here's what compression actually does — and which quality setting to pick for email, web, or print.
QR Codes Explained: How They Work and When to Use Them
From Toyota factory floors in 1994 to every restaurant menu. What QR codes can encode, how error correction works, and the difference between static and dynamic codes.
Emirates Skywards Miles on Credit Cards: What You Actually Earn
Card miles and flight miles work very differently. Earn rates, category multipliers, tier status, and what your miles are actually worth at redemption — explained plainly.
Understanding Your BMI: What the Numbers Mean (and Where They Fall Short)
The BMI formula is 200 years old and still the most widely used weight-health screening tool. Here's how to read your number correctly — including its significant blind spots.