PDF Flatten
Flatten form fields and annotations into static, non-editable content. Supports batch processing.
No watermarkFree & unlimited
All processing happens in your browser. No data is sent to any server.
About this tool
- 1
Upload your PDF
Select the PDF containing form fields, annotations, or comments you want to flatten.
- 2
Choose what to flatten
Select whether to flatten form fields, annotations, or both.
- 3
Flatten the document
The tool merges all interactive elements into the static page content.
- 4
Download flattened PDF
Save the flattened PDF where all content is permanently embedded.
- Flatten forms before sharing to prevent recipients from accidentally changing filled-in data.
- Flattening is irreversible - always keep a copy of the original interactive PDF.
- Flattened PDFs tend to display more consistently across different PDF viewers.
- This is essential before printing to ensure all annotations appear on paper.
- Flatten form fields into static text on the page
- Merge annotations and markup into page content
- Flatten comments, sticky notes, and highlights
- Preserves visual appearance of all flattened elements
- Reduces file size by removing interactive element overhead
- Lock filled form data before submitting official documents
- Prepare annotated PDFs for archival where interactivity is unnecessary
- Ensure consistent printing of PDFs with complex form overlays
- Share reviewed documents with permanent markup that cannot be deleted
No. Flattening permanently merges interactive elements into the page. Always keep a backup of the original file.
The visual appearance should be identical. The difference is that form fields and annotations become non-interactive static content.
Often yes, because interactive element data structures are removed. The reduction depends on how many form fields and annotations existed.