How to Flatten a PDF — Lock Form Fields & Annotations
Learn how to flatten PDF form fields and interactive elements into static content. Prevent accidental edits and finalize documents.
What You Need
- A PDF with form fields, annotations, or interactive elements
- A web browser (no software installation needed)
Step-by-Step: Flatten a PDF
Step 1: Open the Flatten Tool
Go to the Flatten PDF tool. All processing happens locally.
Step 2: Upload Your PDF
Drag and drop the PDF with form fields or annotations.
Step 3: Flatten and Download
Click Flatten to convert all interactive elements to static content. Download the flattened PDF.
When to Flatten a PDF
- After filling out a form — Lock the data so it displays consistently on any device
- Before archiving — Prevent accidental changes to important documents
- Before sharing widely — Ensure everyone sees the same content regardless of their PDF reader
- After adding annotations — Make comments permanent
Related Tools
- Flatten PDF — Lock form fields
- Protect PDF — Add password protection