Better ways to work with serious documents.

All guides

Every published guide, newest first.

• PDF Max for Android is here

  Product news

• How to add and resolve PDF comments on iPhone, iPad, and Mac

  PDF review

• How to bookmark PDF pages on iPhone, iPad, and Mac

  PDF navigation

• How to print PDF highlights with context on Apple devices

  PDF review

• How to create a blank PDF on iPhone, iPad, and Mac

  PDF creation

• How to draw straight lines and clean shapes on a PDF

  PDF annotation

• How to use Study Tape for active recall in a PDF

  Study tools

• How to search handwriting in a PDF on iPhone, iPad, and Mac

  PDF search

• How to remove highlights from a PDF on iPhone, iPad, and Mac

  PDF annotation

• How to extract pages from a PDF on iPhone, iPad, and Mac

  PDF organization

• How to add links to a PDF on iPhone, iPad, and Mac

  PDF editing

• How to resize PDF pages to A4 or Letter on Apple devices

  PDF organization

• How to add page numbers to a PDF on iPhone, iPad, and Mac

  PDF organization

• How to password-protect a PDF on iPhone, iPad, and Mac

  PDF protection

• How to listen to a PDF on iPhone, iPad, and Mac

  PDF reading

• How to rearrange PDF pages on iPhone, iPad, and Mac

  PDF organization

• Goodnotes Annotated PDFs: Study Without Losing the Page

  Study tools

• How to tell if a PDF is flattened—and what to test

  PDF protection

• Spaced Repetition Question Keeps Failing? Fix the Source

  Study tools

• How I Chose PDF Max’s Architecture: Why the Viewer Uses HTML Canvas

  Engineering

• How to fill, sign, and flatten a PDF form on Mac, iPad, and iPhone

  PDF forms

• How to study from scanned lecture notes on iPad, iPhone, and Mac

  Study tools

• How to compare two PDF passages with source-linked Cards

  Study tools

• Why AI flashcards from PDFs fail on diagrams and formulas

  Study tools

• How to Study Lecture Slide PDFs Without Rereading

  Study tools

• Why Anki Cards Lose the Lecture Page

  Study tools

• PDF Max for Android: from preview to Google Play

  Product news

• How to study diagrams, tables, and formulas inside a PDF

  Study tools

• Scheduled Study or Practice: which should you use before an exam?

  Study tools

• How to turn a PDF into source-linked study questions on Apple devices

  Study tools

• Which PDF editors work offline with private documents on Apple devices?

  Buying guides

• How to compress a PDF on Mac, iPad, or iPhone without uploading it

  PDF delivery

• OCR vs reflow vs searchable PDF: three features that solve different problems

  PDF reading

• PDF redaction vs flattening vs covering: what actually removes content?

  PDF security

• How to present a PDF for class without rebuilding it as slides

  Student presentations

• How to add transcribed voice notes to lecture PDFs

  Study tools

• How to organize sources for a school research project in PDF Max

  Student research

• How to read research papers with equations on Mac, iPad, and iPhone

  Student research

• Back-to-school 2026 PDF checklist for students on Apple devices

  Student workflows

• Five common PDF frustrations—and the practical fix for each

  PDF fundamentals

• How PDF became the standard for sharing fixed-layout documents

  PDF fundamentals

• How to permanently redact a PDF on Mac, iPad, and iPhone

  PDF protection

• PDF or Office file? Choose the right format for editing and sharing

  PDF fundamentals

• What Does Flattening a PDF Do? Meaning, Uses, and Risks

  PDF protection

• How to translate a PDF on Apple devices without uploading it

  PDF translation

• How to make a PDF fillable on Mac, iPad, and iPhone

  PDF forms

• How to make a scanned PDF searchable on Mac, iPad, and iPhone

  PDF OCR

• How to edit existing text in a PDF on Mac, iPad, and iPhone

  PDF editing

• Final document review checklist: 12 errors spell-check misses

  Document review