Flatten PDF
Lock in filled-in forms, comments, highlights and stamps so they become a permanent part of the page. Flattened PDFs look the same everywhere and can't be changed by accident.
Flatten PDF
Add · Choose · Flatten
How to flatten a PDF
Add your PDF
Drop one or more PDFs onto the tool or click Choose files.
Choose what to flatten
Form fields, comments and markups, and whether links stay clickable.
Download
Press Flatten PDF and download.
Why use it
What this free tool does
Forms
Answers become ordinary text, no longer editable.
Comments
Highlights, notes, drawings and stamps join the page.
Links kept
Links can stay clickable.
Looks the same everywhere
No more fields that look different in each app.
Batch
Flatten many files at once.
Private
Files are processed on your device.
When to flatten
Before you send a completed form, flattening stops others from changing your answers. Printing services and upload portals also prefer flattened files because form fields sometimes don't print.
Flattening uses what each field and comment currently looks like. Pop-up note text that isn't shown on the page is not kept.
Tip: Want to sign as well? Sign in the PDF Editor, then flatten.
Your files stay on your device
Most online PDF sites upload your documents to their servers. Aleynray Ai does the work inside your browser instead, on your own computer or phone.
Nothing is sent anywhere, so contracts, bank statements, IDs and medical forms stay private, and there is no waiting for uploads.
- Free, with no sign-up or limits
- No watermark
- Files never leave your device
- Opens password-protected PDFs
- Works on desktop and mobile
Frequently asked questions
Can I undo flattening?
No. Keep your original if you might need to edit it again.
Will links still work?
Yes, if "Keep links clickable" is ticked.
What happens to sticky notes?
The note icon becomes part of the page; the hidden note text is not kept.
Is it free?
Yes. There is no sign-up, no limit on files and no watermark.
Are my files uploaded?
No. The tool runs inside your web browser and works on the file on your own device. Nothing is sent to a server, so private documents stay private.