What does flattening a PDF do?

Flattening merges interactive form fields and annotations into the static page content, making them non-editable.

No. Flattening runs securely in your browser without uploading.

When should I flatten a PDF?

Flatten before sharing a form to prevent recipients from editing the filled values, or before printing to ensure all annotations are visible.

PDF

展平PDF

将表单字段和注释转换为静态内容。

点击或拖拽

PDF with form fields or annotations

Upload a PDF with form fields or annotations to flatten.

Flattening preserves the visual appearance of filled forms while removing interactivity.

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