How-To2026-03-212 min read
How to Flatten a PDF — Lock Form Fields & Annotations
What Does Flattening Mean?
Flattening converts interactive elements into static content:
Form fields become non-editable
Annotations merge into the page
File size often decreases
When to Flatten
Before sharing filled forms
Before printing
For archival
How to Flatten
Go to Flatten PDF
Upload your PDF
Click "Process & Download"
Related Tools
Protect PDF — add password
Compress PDF — reduce size