What does flattening a PDF do?

Flattening bakes interactive elements like form fields, checkboxes, annotations, and comments into the static page content so they can no longer be edited or removed.

When should I flatten a PDF?

Flatten before sharing a filled form to prevent recipients from changing answers, or after adding a watermark or signature to lock it in place permanently.

Is flattening reversible?

No. Once a PDF is flattened, the interactive elements are permanently merged into the page content and cannot be restored. Always keep a copy of the original.

PDF扁平化

将表单字段、注释和透明图层嵌入静态页面内容。

点击或拖放PDF文件到此处

仅支持PDF · 最大50MB

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What flattening does

•Bakes form fields and checkboxes into the page permanently
•Merges annotations and comments into the page content
•Resolves transparent elements and layers
•Ensures consistent rendering across all PDF viewers

How to flatten a PDF

Flattening bakes form fields, annotations, signatures, and transparent layers into the static page content so they can't be moved, edited, or removed.

Use this when a PDF needs to look identical for every recipient, regardless of which reader they open it in.

PDF扁平化

What flattening does

How to flatten a PDF

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