Can a flattened form be un-flattened or edited again afterward?

Not through this tool — flattening is meant to be a final, permanent step. Keep an unflattened copy if you might need to edit the form fields again later.

Does flattening affect anything besides form fields?

No, it specifically targets interactive form fields, converting their entered values into fixed page content — everything else in the document is untouched.

Why flatten a form instead of just leaving it as-is?

An unflattened form's answers can still be changed by anyone with a PDF editor — flattening locks the values in as permanent content for a final, signable or archivable record.

Does Flatten PDF upload my files to a server?

No. Flatten PDF runs entirely in your browser using on-device processing, your files never leave your device.

Flatten PDF

Flatten fillable form fields into permanent, non-editable page content.

Runs in your browser

Drop a PDF here

Choose File

Converts fillable form fields and their entered values into permanent, non-editable page content.

About this tool

A fillable PDF form has interactive fields — text boxes, checkboxes, dropdowns — that stay editable indefinitely, which is useful while a form is being filled out but risky once it's meant to be final: anyone with a PDF editor could still change the answers. This tool flattens those fields, converting the entered values into permanent, non-editable page content, so a completed and flattened form can be safely shared, signed, or archived as a locked-in record.

Frequently asked questions

Fill PDF Form

Fill in a fillable PDF form's fields and download it completed.

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Reduce PDF file size while keeping quality.

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Convert Word documents into PDF files.

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Convert JPG images into a single PDF file.

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Rotate one or all pages in a PDF document.

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