Flatten PDF

Lock fillable PDF forms and interactive fields into a standard read-only PDF document online instantly.

Drop PDF form here

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All processing happens locally on your device — your files are never uploaded to any server.

How to Flatten a PDF

Lock interactive form fields and annotations into the background of the PDF.

1. Select PDF Form

Upload a PDF that contains fillable form fields, checkboxes, or annotations.

2. Process

Click flatten. We will convert all interactive elements into standard, uneditable text/graphics.

3. Download Flat PDF

Download your finalized, read-only PDF that is completely safe to share.

Frequently Asked Questions

Flattening is crucial before sharing legal forms to prevent unauthorized tampering. Doing it locally guarantees security.

Is my data private and secure?

Yes, absolutely 100%. By utilizing modern local browser technologies, we process your files directly on your computer or phone. No servers, no uploads, no compromises.

How fast is the processing?

Because there are no uploads or downloads to a remote server, processing is virtually instant. Even large PDF files are processed in milliseconds without eating up your network bandwidth.

Why should I flatten my PDF?

Flattening ensures that your filled-out forms cannot be edited or altered by the recipient, and ensures it prints perfectly on all devices.

Are there any limits or watermarks?

Enjoy completely unrestricted access to the tool! You can use it an unlimited number of times for free. We never artificially cap your file sizes, demand subscriptions, or ruin your final documents with unwanted branding or watermarks.