How to use
- Select or drop the PDF you want to flatten.
- Click Flatten to bake form fields and annotations into the pages.
- Wait a moment while the PDF is processed locally in your browser.
- Download your flattened, non-editable PDF.
Frequently asked questions
What does flattening a PDF do?
It converts interactive form fields and annotations into static page content. The values stay visible exactly as they look, but they can no longer be selected, edited, or filled in.
Will my filled-in form values be kept?
Yes. Any text, checkboxes, or selections in the form are rendered onto the page so they remain visible after flattening — they simply become permanent and uneditable.
What if my PDF has no form fields?
That's fine. A PDF without form fields is re-saved as-is, so you still get a valid downloadable file with nothing lost.
Is my PDF uploaded to a server?
No. The PDF is processed entirely in your browser using local JavaScript and never leaves your device, so your document stays completely private.
Does flattening reduce the quality of my PDF?
No. Flattening keeps your pages, text, and images intact — it only converts interactive AcroForm fields and annotations into fixed content, so nothing is downscaled or re-compressed.
Can I flatten more than one PDF at a time?
This tool flattens one PDF per run. Select a file, flatten and download it, then repeat with the next PDF. There is no file-size limit beyond what your device's memory allows.
About this tool
Flatten a PDF free in your browser: bake interactive form fields and annotations into permanent, non-editable content. No uploads — your file never leaves your device.