Free Flatten PDF Tool
Flatten fillable PDF forms into permanent static read-only pages.
- 100% free
- Files stay on your device
- No sign-up, no watermark
Select a PDF to flatten form fields
PDF documents up to 100 MB
What is Flatten PDF Tool?
Prevent accidental edits to filled forms and contracts. PDF flattening converts interactive form widgets, signatures, and markups into static non-interactive page elements, locking your inputs permanently.
How to use Flatten PDF Tool
- 1
Add your file or input
Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
- 2
Adjust the options
Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
- 3
Process and download
Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.
Frequently asked questions
Why should I flatten a PDF form before sending it to clients?
Some mobile PDF viewers and web browsers do not display interactive form values correctly. Flattening bakes the values into the page graphics, guaranteeing they appear identically for every recipient.
Can a flattened PDF form be unflattened later?
No. Flattening permanently converts editable form fields into static vector graphics and text. Always keep a backup copy of your unflattened form if you need to edit it later.
Does flattening PDF forms reduce file size?
Yes. Stripping interactive AcroForm widget dictionaries and appearance streams often reduces total document byte weight.
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