PDF Guides

Practical, step-by-step help for everyday PDF jobs.

PDF Rejected by an Online Form? 9 Common Causes and Fixes

Online form says your PDF is too large, invalid or not supported? Here are the 9 most common causes and how to fix each one in a minute — free.

How to Reduce PDF File Size: 7 Practical Ways

Seven practical ways to make a PDF smaller for email and upload forms — from quick compression to fixing the cause. Works on phone and PC.

How to Convert a Photo to PDF on Your Phone

Step-by-step: turn photos into a PDF on Android or iPhone without installing an app. Plus tips for sharp, small scans that upload forms accept.

How to Convert Word to PDF Without Losing Formatting

Fonts changed? Layout shifted? Learn why Word-to-PDF formatting breaks and the most reliable ways to keep your document looking exactly right.

How to Merge PDF Files into One

Combine several PDFs into one document in the right order — free, without Adobe Acrobat. Works on Windows, Mac, Android and iPhone.

How to Sign a PDF Without Printing It

Sign PDF documents electronically without printing and scanning. Draw, type or upload your signature on phone or computer — free.