Can flattening be undone?

No. The field structure is discarded once the values are drawn into the page. Keep the unflattened original if you might need to revise it — flattening produces a new file, so the original survives unless you overwrite it.

Does flattening make the file smaller?

Usually slightly, because the form definitions and annotation objects are dropped. The saving is modest; use Compress if size is the actual goal.

Will a flattened form still print correctly?

Better than an unflattened one. Some printers and readers omit form field contents when printing; flattened values are ordinary page content and always print.

Flatten PDF | Cine Power Planner

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About Flatten PDF

Converts interactive elements — form fields, annotations, comments and stamps — into static page content. The document looks identical and can no longer be edited, refilled or have its annotations toggled off.

Flattening reads the filled values from the file in your browser and re-draws them locally. Form contents — often personal data — never transit a network.

How to use Flatten PDF

Load the completed form or annotated document.
Confirm every field holds its final value — after flattening they cannot be changed.
Flatten.
Download. The values are now part of the page graphics.

On a production

A filled-in form is not finished until it is flattened. Until then the fields are still editable, and any recipient can change a number and forward it on with no visible trace. Flattening turns a form into a record.

Frequently asked questions

Can flattening be undone?: No. The field structure is discarded once the values are drawn into the page. Keep the unflattened original if you might need to revise it — flattening produces a new file, so the original survives unless you overwrite it.
Does flattening make the file smaller?: Usually slightly, because the form definitions and annotation objects are dropped. The saving is modest; use Compress if size is the actual goal.
Will a flattened form still print correctly?: Better than an unflattened one. Some printers and readers omit form field contents when printing; flattened values are ordinary page content and always print.