How to Flatten PDF – Step by Step

PDF forms with editable fields can be problematic when sharing. The Flatten PDF tool flattens form fields and annotations into static content so they can't be edited accidentally.

Step-by-Step Guide

Open the Flatten PDF page.

Upload your PDF with form fields or annotations.

Click Flatten PDF and all interactive elements become part of the page content.

Download your flattened PDF — form fields will no longer be editable.

Tips for Best Results

• Flatten before sharing fillable forms to prevent recipients from changing the content.
• This also reduces file size since interactive form data is removed.
• Once flattened, form fields cannot be un-flattened — keep a backup of the original.