Flatten PDF
Turn form values and comments into page content so they can no longer be changed as fields or annotations in PDF viewers.
Select a file for Flatten PDF
Drag & drop your files here, or click to browse
- Field values and annotation appearances are drawn into the page content and the interactive objects are removed. Links and annotations without an appearance stream are left in place.
How to use Flatten PDF
From upload to download in 3 steps.
- 1
Add your file
Choose or drag a PDF file into the upload area (up to 200 MB each).
- 2
Adjust the settings
Optionally change the flatten — the defaults work well for most files.
- 3
Flatten PDF and download
Click Flatten PDF, follow the progress, and download the result. Files are deleted from the server automatically afterwards.
Supported formats and settings
- Input formats
- Output formats
- Limits
- Up to 200 MB per file
- One file per job
- Files are deleted automatically after processing
- Flatten
- Form fields and annotations, Form fields only and Annotations only
Why use our Flatten PDF?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does Flatten PDF support?
Flatten PDF accepts PDF files. It produces PDF.
Is there a file size limit?
Each file can be up to 200 MB. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does Flatten PDF work, and what are its limitations?
Field values and annotation appearances are drawn into the page content and the interactive objects are removed. Links and annotations without an appearance stream are left in place.
Is Flatten PDF free to use?
Yes. Flatten PDF is free, needs no account, and does not add watermarks to your files.
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