How to Flatten PDF Online
Step-by-step instructions to flatten forms and annotations into static content with ZiaSign.
Why this workflow matters
ZiaSign's free PDF flattener converts interactive elements into static content. Form fields become plain text, annotations become part of the page, and JavaScript is removed. The result is a clean, non-editable PDF that displays identically on any device. Perfect for finalizing documents before distribution. No watermark. Free to run. No card. Email only to download.
Step by step
Flatten PDF is one of the fastest ways to flatten forms and annotations into static content. You can run it free. No card. Email only to download.
- 1
Upload your PDF
- 2
Select what to flatten (forms, annotations, JS)
- 3
Click 'Flatten'
- 4
Download the flattened PDF
Frequently asked questions
What does flattening a PDF do?
Flattening converts interactive elements (form fields, annotations) into static, non-editable content — like printing to paper.
Can I flatten only form fields?
Yes. Choose to flatten forms only, annotations only, or both. JavaScript removal is also available.
Will flattened form data still be visible?
Yes. All filled-in data becomes static text on the page — visible but no longer editable.
Why flatten a PDF before sharing?
Flattening prevents recipients from changing form data, ensures consistent rendering, and removes potential security risks from interactive elements.
More specific workflows for this tool
Related guides
How to Protect PDF Online
Step-by-step instructions to password-protect and encrypt your pdf with ZiaSign.
Read guideHow to Unlock PDF Online
Step-by-step instructions to remove password protection from a pdf with ZiaSign.
Read guideHow to Remove JavaScript Online
Step-by-step instructions to strip all javascript from a pdf for security with ZiaSign.
Read guideReady to run the actual workflow?
You have the steps. Open the tool, process the file, and then move into the next recommendation if the document still needs cleanup, protection, or conversion.