Flatten PDF

Best use cases

• Prepare completed forms for printing or submission.
• Lock in annotations or overlays before sharing a final copy.
• Create a more predictable version for archiving or downstream review.

Before you share

• Keep the editable version if more changes are likely.
• Use flattening for distribution and archiving, not as a substitute for document review.
• Test important pages after flattening, especially forms and signatures.

Practical limits

• Flatten PDF works on the file you provide, but it cannot correct source problems such as missing fonts, broken scans, or incomplete document structure on its own.
• Performance depends on the memory and CPU available in the current browser tab, so very large files or image-heavy PDFs can still take longer to finish.
• The browser-based workflow keeps files private and fast to process, but you should still inspect the final PDF before sending it to a client, portal, or records team.

Where flattening helps most

Flattening is useful when forms, signatures, notes, or overlays need to behave like part of the page instead of editable layers. That makes the file easier to print, archive, and hand off into systems that do not preserve interactive PDF elements consistently.

Check these items after flattening

• Confirm filled fields still appear correctly at normal zoom and in print preview.
• Open the flattened copy in one secondary viewer to see whether annotations and signatures now render more consistently.
• Keep the editable source file if more changes may be needed later, because flattening is best treated as a final-distribution step.