Flatten PDF online free
Lock form fields, comments, stamps and signatures into the page so nobody can edit them. Maximum mode is already selected.
- 100% free, unlimited
- No signup
- No watermark
- Files never leave your device
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Frequently asked questions
Everything about compressing PDFs, sizes and privacy.
What does flattening a PDF mean?
Flattening merges interactive and layered content, such as form fields, comments, stamps, signatures and optional layers, into the page itself. The result looks identical but those elements can no longer be edited or removed.
How do I flatten a PDF online for free?
Drop the PDF above and download the result. Maximum mode renders every page into a single image, which is the most reliable way to flatten a PDF because nothing editable remains.
How do I turn a PDF into a scanned PDF?
Use Maximum mode and switch on Black & white. Every page becomes an image, just like a document that went through a scanner, which some portals and clients require.
Can I still select text after flattening?
No. Flattened pages are images, so text cannot be selected or searched. Keep your original file if you might need to edit or copy text later.
Is it really free and unlimited?
Yes. There is no file size limit, no daily limit, no number of files limit, no signup and no watermark. Compression runs on your own device, so there is nothing to pay for and nothing to cap.