Flatten PDF
Permanently merge all annotations, form fields, stamps and markup into the page content so they can't be edited or removed. Perfect for finalizing filled forms and reviewed documents before sharing.
Loading tool…
How to use Flatten PDF
- 1
Add your file
Open the Flatten PDF tool and drop in your file — or click to browse. Files are read directly into your browser's memory for local processing.
- 2
Adjust the options
Fine-tune the settings to fit your needs. Most tools process locally on your device, so changes preview instantly.
- 3
Download the result
Click the action button and your finished file downloads immediately — no queue, no email, no watermark.
Frequently asked questions
Is Flatten PDF free to use?＋
Yes. Flatten PDF on AsliPDF is completely free — no account, no daily limits and no watermarks on your output.
Is it safe to use Flatten PDF with confidential documents?＋
Yes. Most tools on AsliPDF process your file entirely in your browser using WebAssembly — your document never leaves your device. Some future AI-powered tools may send data to a server with your explicit consent, and will always be clearly labeled.
Do I need to install any software?＋
No. Flatten PDF runs in any modern browser on desktop or mobile. There is nothing to download or install, and no sign-up is required.