Flatten PDF online — free
Make forms and annotations permanent
No sign-up required. Drop your files and download in seconds.
Upload a PDF or image with forms or annotations to flatten.
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Photos up to 100 MB · other files up to 25 MB · ⌘V / Ctrl+V
What is Flatten PDF?
Flatten PDF merges form field values and annotations into the page content so they can't be changed.
How to flatten pdf online
- 1
Upload your PDF.
- 2
Click Flatten PDF.
- 3
Download the flattened document.
Frequently asked questions
What does flattening do?
Form fields and annotations become part of the page — they can't be edited afterward.
When should I flatten?
Before final distribution of filled forms or signed documents.
Is it free?
Yes — free with instant download.
Prefer instructions? Follow a step-by-step PDF guide.
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