Flatten PDF
Flatten all form fields and annotations into the PDF content.
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Supports: .pdf — Max: 200MB
How to Flatten PDF Online
1
Upload PDF
Drop your PDF with form fields or annotations.
2
Flatten
Click Process & Download to flatten all interactive elements.
3
Download
Save the flattened, non-editable PDF.
About Flatten PDF
Flatten PDF converts interactive form fields, annotations, and comments into static page content. After flattening, forms cannot be modified, which is important for archiving completed forms, sharing filled documents, and ensuring print consistency.
Features
✓Flatten form fields into static content
✓Lock annotations and comments
✓Reduce file size
✓Prevent form modification
✓Free, instant processing
Frequently Asked Questions
What happens to filled form data?▼
Filled-in data becomes permanent static text. The form can no longer be edited.
Can I unflatten a PDF?▼
No, flattening is permanent. Always keep a copy of the original before flattening.
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