Guides to reading PDFs better

Honest, practical guides to the small frictions that make reading on a phone worse than it should be — and what actually fixes them. Written to be useful whether or not you ever use FlowRead.

• How to Look Up Word Definitions While Reading a PDF on Your Phone

  Every working way to look up a word inside a PDF on Android and iPhone, ranked by how well each one actually works.

• How to Read PDFs Without Uploading Them to the Cloud

  Most AI PDF tools upload your whole document first. How to tell which ones do, and how to get reading help without handing over the file.

• ChatPDF Alternatives That Don't Upload Your Documents

  ChatPDF uploads and indexes your whole document. Here are the alternatives that do not, and what each one gives up in exchange.

• Does FlowRead Upload My PDFs?

  A precise answer: what stays on your device, what leaves it, what we record, and how to check any of it yourself.

• We Checked 60 Academic Papers: 78% Break Words in Half

  We measured 60 recent arXiv papers across four fields. In 78%, the typesetter had cut at least one word in half — so selecting it gives you a fragment.