Flattening PDFs Explained

When you fill out a digital form, the fields remain "interactive". Meaning, someone else could change your answers later.

Why Flatten?

Flattening merges the interactive layer with the background layer.

• Security: Prevents changing filled data.
• Compatibility: Ensures the form looks filled on all viewers (even mobile).
• Print Prep: Removes complex layers that might confuse printers.

Use our Flatten PDF tool to lock your documents instantly.