Flatten PDF
Make filled fields, stamps and markup permanent and uneditable.
Drop your PDF here
Or click to browse. Your file is read on this device only.
Processed entirely in this browser tab. Nothing is uploaded anywhere.
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About Flatten PDF
Flattening merges form fields, annotations and comments into the page itself, so they can no longer be edited or accidentally changed. The result looks the same but behaves like a printed sheet.
When people use it
- Locking in a completed application form before you submit it.
- Making sure comments and stamps display the same in every viewer.
- Preventing a recipient from editing the values you typed into fields.
Tips for better results
- Keep an unflattened copy in case you need to change the answers later.
- Some portals reject fillable PDFs — flattening usually fixes that.
- Flattening is not encryption; add a password with Protect PDF if the file is confidential.
How to use Flatten PDF
- 1Open the Flatten PDF page on avalpdf.
- 2Drop your file in, or click to browse for it.
- 3Choose your options — the defaults suit most files.
- 4Run the tool and download the finished file.
Read the full guide: What does it mean to flatten a PDF, and when should you?
Questions about Flatten PDF
- Is Flatten PDF free to use?
- Yes. Every avalpdf tool, including Flatten PDF, is free with no sign-up and no daily limit.
- Are my files uploaded to a server?
- No. The work happens inside your browser tab, so the file itself never leaves your device.
- Does Flatten PDF work on a phone?
- Yes — it works in mobile browsers on Android and iPhone as well as on desktop.