PDF99 Blog
Practical guides and tips for working with PDFs — written clearly, without the jargon.
How to Compress a PDF Without Losing Quality
Large PDFs slow everything down. Here's how to shrink them properly, without making your document look blurry or broken, using free tools.
JPG vs PNG: Which Format Should You Use?
JPG and PNG are everywhere but built for different jobs. A plain-English breakdown of when to use each one — and why it matters for PDFs.
The Best Free PDF Tools in 2026
We tested dozens of free PDF tools so you don't have to. Here's what's actually worth using in 2026, and what to avoid.
What is a PDF File and Why Is It Everywhere?
A plain-English explanation of what a PDF is, why it became the universal document format, and when to use it versus other formats.
How to Merge Multiple PDFs into One File
Step-by-step guide to combining multiple PDF files into one document — free, online, without installing any software.
My PDF is Too Large — How to Fix It
Practical solutions for when a PDF is too large to email, upload or share. Covers all the reasons a PDF gets large and how to fix each one.
How to Extract Pages from a PDF
How to extract specific pages from a PDF document — step-by-step, using free online tools with no software to install.