Flatten PDF

将 PDF 文件的交互式表单字段和注释扁平化为静态页面内容，使其不再可编辑。您的文件永不离开设备 — 所有处理在浏览器本地完成。

设计即私密

您的文件永不离开您的设备。所有处理均在浏览器本地完成 —— 无上传、无服务器。

将 PDF 拖放到此处

或点击选择文件

您的文件永不离开您的设备。

Converts interactive form fields and annotations into static page content so they can no longer be edited.

Flatten PDF converts interactive form fields and annotations into static page content so they can no longer be edited or filled. This locks in form data, prevents further edits, and ensures the document renders identically in all viewers. Flattening runs entirely in your browser via qpdf-wasm — your file never leaves your device.

工作原理

如何使用 Flatten PDF

1
Drop your PDF. Drag and drop a PDF with form fields or annotations onto the drop zone, or click to choose a file from your device.
2
Click Run Flatten PDF. The tool converts interactive form fields and annotations into static page content locally in a Web Worker using qpdf-wasm. Your file never leaves your device.
3
Download the flattened PDF. The flattened PDF is offered as a download. Form fields and annotations are now baked into the page content.

功能

此工具的功能

Flattens interactive form fields into page content
Bakes annotations into the page content stream
Prevents further editing of form data
No upload — runs entirely in your browser

限制

须知事项

Flattening is irreversible — form fields cannot be made interactive again
Form field values are preserved but the fields can no longer be edited
Some complex annotations may render slightly differently after flattening

常见问题

常见问题解答

Is my file uploaded anywhere?

No. Flattening happens entirely in your browser using a Web Worker and qpdf-wasm. Your file never leaves your device.

What does flattening do?

Flattening converts interactive form fields and annotations into static page content. The visual appearance is preserved, but the fields can no longer be edited or filled. This is useful for locking in form data before sharing.

Can I undo flattening?

No. Flattening is irreversible — once form fields are baked into the page content, they cannot be made interactive again. Keep a copy of the original if you may need to edit the form later.

Will the flattened PDF look the same?

The visual appearance is preserved. Form field values and annotations render the same way — they are just no longer interactive. In rare cases, complex annotations may render slightly differently.