LEARN · GUIDES

File & conversion guides.

Short, practical write-ups on file formats and conversion — no fluff, no filler.

How PDF compression actually works

The tradeoffs between file size and image quality, and why some PDFs shrink more than others.

Choosing the right image format

JPG vs PNG vs WEBP — when each one wins, and what you lose by picking wrong.

Batch converting without losing quality

How to process dozens of files at once without a compounding loss in fidelity.

Why in-browser conversion is private by default

What actually happens when a tool claims 'nothing leaves your device,' and a concrete way to check it for yourself.

HEIC explained: why your iPhone photos won't open everywhere

What HEIC (High Efficiency Image Container) actually is, why your iPhone keeps saving photos in it, and the quickest ways around the compatibility mess it causes.