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Flatten PDF
Flatten form fields and annotations into static content so they cannot be edited.
Flattening bakes all form fields, checkboxes, and annotations into static content. The resulting PDF can no longer be filled or edited — ideal for archiving or sharing final versions.
Click or drag a PDF here
Works best on PDFs with fillable forms
Max 100 MB per file
How it works
Upload a PDF with fillable form fields or annotations and click Flatten. The tool bakes all interactive elements into the page as static content, making the PDF read-only and preventing any further editing.
Why use this tool?
Flattening is required when submitting completed forms to government agencies or clients who shouldn't be able to modify the data. Prevents accidental changes to signed or completed PDFs.