3 guides

PDF guides

Plain answers to everyday PDF questions: putting files together, getting them under a size limit, and knowing which websites to trust with them.

• Guide

  Are online PDF tools safe?

  Most online PDF tools upload your file to a server. What happens to it there, how to check whether a tool uploads at all, and when to keep a file offline.

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• Guide

  How to merge PDF files

  How to combine PDF files into one on Windows, Mac, iPhone and Android, free and without installing anything, plus how to fix page order and file size after.

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• Guide

  How to compress a PDF

  Why some PDFs are huge, what compression can and cannot shrink, and how to get a PDF under an email or upload limit without making it unreadable.

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