Flatten PDF
Flattening merges form fields, annotations and layers into the page itself — the filled-in answers become permanent page content that can no longer be clicked, changed or accidentally moved. Free with fair daily limits.
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Drag & drop your file here
or click to browse · Up to 15 MB
Select fileAccepted: PDF
Your files are processed temporarily and deleted automatically — there is no general cloud storage. File deletion.
How to flatten pdf
Simple steps — no software to install.
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Upload the PDF
Usually a filled-in form or annotated document.
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Flatten
Fields, annotations and layers are merged into the pages.
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Download
A static PDF that looks identical but can no longer be edited via fields.
Why use our Flatten PDF
Secure & private
Files are encrypted in transit and deleted automatically after processing.
Fast results
Optimized processing returns your file in seconds.
Free to start
Core tools are free with daily limits — no install required.
Works anywhere
Runs in your browser on any device, anywhere in the world.
Why flatten before sending
A filled form that is not flattened can still be edited by the recipient, and some systems print interactive fields as empty boxes. Flattening freezes exactly what you see, so the document that arrives is the document you sent.
What gets flattened
Interactive form fields (text boxes, checkboxes, dropdowns), sticky notes and markup annotations, and layered content — all rendered into normal, static page content.
Flatten vs. protect
Flattening prevents field edits by making them part of the page; password protection restricts opening or permissions. For sensitive submissions, flatten first, then protect if needed. Files are processed temporarily and deleted automatically — there is no general cloud storage.
- Locks filled form fields
- Freezes annotations and markup
- Output looks pixel-identical
- Prints reliably everywhere
- Free with fair daily limits