Online Tool Store
PDF Flattener
Bake filled-in form field values into a PDF's page content and remove the interactive form widgets, locking in a completed form. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
How it works
- Choose a PDF file.
- Click "Flatten PDF" — any form fields' values are baked into the page and made non-editable.
- Download the flattened result.
FAQ
What does "flatten" mean?
It bakes any filled-in form field values directly into the page content and removes the interactive form widgets, so the result is a plain, static PDF — the values are still visible, but no longer editable as a form.
Why would I want to flatten a PDF?
To lock in a completed form so it can't be accidentally changed, or to ensure it displays consistently across every PDF viewer, since some viewers render interactive form fields inconsistently.
What if my PDF has no form fields?
It downloads unchanged in structure — flattening a PDF without a form simply has nothing to do.
Is my PDF uploaded anywhere?
No — flattening happens entirely in your browser using pdf-lib.
How we compare
| Feature | Online Tool Store | Printing and re-scanning | Desktop PDF software |
|---|---|---|---|
| Keeps text sharp (not a scan) | ✓ | ✗ | ✓ |
| No install | ✓ | ✓ | ✗ |
Printing and rescanning to "lock" a form degrades quality. PDF Flattener keeps everything crisp and digital.