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Flatten a PDF — bake forms and annotations into the page
Bake annotations and form fields into the page content.
Drop your file here
or click to browse — one file at a time
How to flatten PDF in your browser
Flattening turns interactive fields, comments and signatures into ordinary page content. The result looks identical everywhere, prints reliably and cannot be altered by the recipient.
- 1Upload the PDF with forms or annotations.
- 2Run the flatten operation.
- 3Download the flattened PDF.
- 4Check the result before sending.
What this flatten PDF online tool does
Locks in form answers
Completed form data becomes permanent page content.
Consistent printing
Removes viewer-dependent rendering of annotations and widgets.
Smaller, simpler files
Dropping the interactive layer often reduces the file size too.
Why people use it
- Free with no account, no email and no watermark
- Runs in the browser — documents stay on your device
- Works on Windows, macOS, Linux, Android and iOS
- Also great for flatten PDF form free and make PDF non-editable
Frequently asked questions
Can a flattened PDF be un-flattened?
- No — keep a copy of the interactive original if you may need to edit it later.
Should I flatten before emailing a signed form?
- Yes, it prevents accidental changes to your answers and signature.
Related PDF tools
Continue your workflow with another free PDF tool from PaperWorksPDF.
Fill PDF formsDetect AcroForm fields, fill them in and optionally flatten.Sign PDFDraw or type a signature and place it anywhere in the document.Compress PDFShrink file size with lossless cleanup or image downsampling.Set permissionsControl printing, copying, editing and form filling.Whiteout & redactPermanently cover sensitive areas before sharing.
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