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 cause headaches. Here's how to shrink them without making your document look blurry or broken, using free tools that work in any browser.
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 when creating PDFs.
The Best Free PDF Tools in 2026
We tested dozens of free PDF tools. 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 software.
My PDF is Too Large — How to Fix It
Practical solutions when a PDF is too large to email or upload. Covers why PDFs get large and how to fix each cause.
How to Extract Pages from a PDF
How to extract specific pages from any PDF document, step by step, using free online tools with no software to install.
How to Reduce PDF File Size on iPhone and iPad
Free methods to compress PDF files on iOS using Safari and built-in tools. No app download required.