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Guides for getting more out of your files.
Short, practical write-ups on file formats and conversion, plus programming language learning pages — no fluff, no filler.
File & conversion guides
01
More guides →How PDF compression actually works
The tradeoffs between file size and image quality, and why some PDFs shrink more than others.
02Choosing the right image format
JPG vs PNG vs WEBP — when each one wins, and what you lose by picking wrong.
03Batch converting without losing quality
How to process dozens of files at once without a compounding loss in fidelity.
04Why 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.