PDF
Watermark PDF
Place text or an image across your pages with adjustable opacity.
AvailableOn-device
PDFLive
Flatten PDF
Make form fields and supported annotations part of the page.
Processed on your device · No uploadsDrop your PDF files here
Choose one or more PDF files
or drop files here, or paste from your clipboard
Up to 3 files · 120 MB total · 2,000 pages · no uploads
Add a file to start.
How it works
- 1
Choose the files you want to use with Flatten PDF.
- 2
Arrange your files and review the available flatten pdf options.
- 3
Process locally, preview the output and download it, or continue with another tool using the processed files.
A few things to know
What should I know about the output?
Form fields mode fixes field values on the page while keeping ordinary text selectable. Everything mode renders every page as an image, including visible annotations; text then becomes unselectable. Signatures are not preserved as valid digital signatures.
Can I use Flatten PDF now?
Flatten PDF is available now, free and without signup. Processing happens entirely on your device.
Where will Flatten PDF process my files?
Files are read, processed and rendered in browser Web Workers. Nothing is uploaded. Cancel stops the worker immediately; originals remain unchanged.
Will Flatten PDF be free?
Yes. Unlimited free uses, without signup or a daily quota. Choose up to 3 input files and 120 MB total, with 2,000 pages per job. Rendered images are limited to 32 megapixels. Smaller batches help on devices with less memory.