Flatten PDF files online with our free PDF Flatten tool. Merge form fields annotations and other interactive elements into the document to create a simpler and more stable PDF.
or drop pdf file here
Flatten PDF is a free online tool that makes editable PDF elements permanent by flattening form fields, annotations, comments, and other interactive content into the document. This can help prevent accidental changes and ensure the PDF displays consistently when shared or printed. Simply upload your PDF, flatten the selected elements, and download the finalized file. It is useful for completed forms, contracts, invoices, applications, and documents prepared for distribution.
Drag & drop your file into the tool above, or click Choose Files to browse.
Adjust any settings in the panel on the right to match your needs.
Click the action button and wait a moment while we process your file.
Download your result instantly — 100% browser-based, nothing leaves your device.
Built for speed, privacy and reliability — on any device.
Just upload your file and the tool handles the rest. No manual adjustments or software needed.
Everything runs directly in your browser. Your files never leave your device — 100% private.
Works on any modern browser on desktop, tablet or mobile — Mac, Windows, iOS, Android.
No subscriptions, no sign-ups, no hidden fees. Use Flatten PDF as many times as you need.
Our PDF engine preserves fonts, layouts and formatting so your output looks exactly as expected.
Yes, Flatten PDF is completely free. There are no hidden fees, subscriptions or account requirements. Just open the tool and start.
Flatten PDF runs entirely in your browser. Your files are never uploaded to any server — they stay on your device the whole time, so your data is always private.
There is no hard file size limit enforced by the tool. Very large files may take longer to process depending on your device's memory and browser performance.
Yes. Output files conform to the PDF standard and open correctly in Adobe Acrobat, Adobe Reader, macOS Preview, Chrome, Firefox and all other major PDF viewers.
The tool works in all modern browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, Safari and Opera. We recommend keeping your browser up to date for the best experience.