All Tools VerseFlatten PDF
Flatten a filled PDF form so the fields become fixed and can no longer be edited, then download it. Runs in your browser.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Lock a filled PDF form so the text becomes part of the page and can no longer be edited, then download it. Your file stays on your device.
How to Use Flatten PDF
- Add your PDF. Drag the file onto the box or click to choose it. The tool checks for form fields and tells you how many it found.
- Review what will happen. If the PDF has a fillable form, those fields will be baked into the page. If it has none, you still get a clean saved copy.
- Flatten it. Click Flatten and the tool merges the fields into the page content with pdf-lib, right in your browser.
- Download. Save the flattened PDF. Your original file is left untouched.
Frequently Asked Questions
What does flattening a PDF mean?
It turns fillable form fields into normal page content, so the text you entered becomes a permanent part of the page and can no longer be edited.
Is my document uploaded anywhere?
No. Flattening happens in your browser, so the file never leaves your device.
Will my filled in answers stay visible?
Yes. The values you typed into the form stay exactly where they are, they just become fixed.
What if my PDF has no form?
It still works. The tool saves a clean copy, which can also help with files that behave oddly in some viewers.
Can a flattened PDF be un-flattened?
No. Once the fields are merged in, they cannot be turned back into editable fields, so keep your original if you need to edit later.
Why would I flatten a form?
To share a final version that others cannot change, and to make sure every viewer sees the same filled in result.
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