Blog

Working with PDFs raises the same questions over and over — why a file is huge, what a password really protects, why a scan has no selectable text. These guides answer them properly, in plain English, based on how PDF Tools actually works.

• August 1, 2026

  Do Online PDF Tools Really Need to Upload Your Files?

  Most online PDF tools send your document to a server to do work your own browser could do locally. Here is which operations truly need a server — and which never did.

• July 28, 2026

  From Camera Roll to Clean Document: Phone Photos into One PDF

  Photographing paperwork is the modern scanner — but nobody wants to receive eleven photos. How to shoot documents well and turn them into a single, tidy PDF.

• July 26, 2026

  JPG or PNG? Picking the Right Format When Converting PDF Pages

  Converting PDF pages to images always asks the same question: JPG or PNG, and at what DPI? The right answer depends on what's on the page and where it's going.

• July 24, 2026

  Why Can't I Select Text in My PDF? Scans, Text Layers and OCR

  Some PDFs let you select and search text; others behave like photographs. The difference is the text layer — and it decides what any PDF tool can do with your file.

• July 22, 2026

  PDF Passwords Explained: What They Protect — and What They Don't

  A password-protected PDF is genuinely encrypted, not just hidden. But the protection has edges worth understanding before you trust it with anything sensitive.

• July 20, 2026

  Why Is My PDF So Large? A Practical Guide to PDF File Size

  Two ten-page PDFs can differ in size by a factor of a hundred. Here is what actually takes up space in a PDF, and what does and doesn't make one smaller.