or drop files here
- Form fields, comments and layers become part of the page
- The same look on every device, viewer and printer
- Files are removed from processing within an hour
Flattening turns everything that floats above the page — fill-in fields, comments, highlights and stamps — into part of the page itself, so the document stops changing when it travels. The layout is fixed, printouts match the screen, and portals that mishandle interactive forms get a plain, predictable file. Pick the light mode to turn form entries into normal text while everything stays sharp and selectable, the complete mode to also bake in comments, highlights and stamps and drop the clickable links, or the image snapshot when the document must not be edited or copied at all. Your original page sizes and layout are kept, and the download is ready in seconds. Free to start, no watermark, no sign-up — files are removed from processing within 1 hour.
How to flatten a PDF
- 1Upload your PDF — drag and drop it on the page, or choose a file from your device.
- 2Pick what to flatten: form fields only, everything, or the no-edit image snapshot.
- 3Press Flatten PDF and the document comes back fixed in place.
- 4Download the result — or move straight on to compressing, protecting or signing it.
Why flatten with PDFTrusted
- Fields, comments, highlights and stamps become part of the page itself — nothing floats above it any more.
- Nothing shifts on printers, phones and portals that were never built for interactive forms.
- Your original page sizes and layout are kept, and the result opens in any PDF viewer.
- The image snapshot mode makes pages uneditable and uncopyable when the document must not change.
- One pass, no sign-up and no watermark on the result.
- Files are removed from processing within 1 hour, and you can delete them yourself right away.
Flatten PDF — questions people ask
What does flattening a PDF actually do?
It turns anything that sits on top of the page — form fields, comments, highlights, stamps — into part of the page itself. The document becomes a fixed picture of its content instead of a set of interactive pieces.
Is a flattened PDF still a normal PDF?
Yes. It opens in every reader and prints like any other PDF; it simply no longer contains parts that can be typed into, moved or hidden.
Can I undo flattening?
No — that is the point. Keep your original file if you might need to edit it again; share, print or submit the flattened copy.
Which mode should I choose?
Pick form fields only to turn entries into text, everything to also bake in comments and highlights, and the image snapshot when nothing about the document may be edited or copied.
Will the quality change?
The field and comment modes keep text and pictures sharp because nothing is turned into an image. In the image snapshot, pages are rendered at the quality you choose — up to print-ready.
Why do some forms break on other devices?
Interactive PDFs need the form itself to survive the trip. Many portals and older viewers drop fields, shift comments or show empty boxes; a flattened document has nothing left to break.
Is flattening the same as compressing?
No. Flattening fixes content in place and the size often barely changes. If you also want a smaller file, run the result through Compress PDF.
Is it free?
Yes — free to start, with no sign-up and no watermark on the result. Files are removed from processing within 1 hour.
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