Mac에서 PDF 양식 필드 평탄화(Flatten)하여 수정 방지하기
File Acture는 입력된 PDF 폼 필드와 서명을 기기 내부에서 즉시 평탄화하여 수정할 수 없는 안전한 문서로 변환합니다.
2026년 11월 10일 업데이트읽는 데 3분
File Acture 팀
Fillable PDF forms are convenient for collecting signatures, invoices, and job applications. However, leaving form fields interactive means anyone who opens the file can change the values, edit text, or erase signatures.
Flattening a PDF merges the form layers into the permanent document background so they can never be altered. Here is how to lock your PDF form fields on Mac.
Why interactive PDF forms are a security risk
When an interactive form is saved normally, the text fields remain editable form objects rather than permanent pixels or vectors.
Anyone with a basic PDF reader can tamper with numbers or names. Flattening eliminates this risk by converting inputs into fixed page content.
How to flatten a fillable PDF on Mac
- 1
Launch File Acture and select Flatten PDF
Open File Acture on your Mac and choose the Edit or Flatten PDF tool.
- 2
Drop your completed fillable PDF file
Add the filled-in PDF contract or application to the file queue.
- 3
Click Flatten to export a tamper-proof copy
File Acture exports a permanent read-only copy with fixed text.
PDF 양식 필드와 서명을 영구적으로 잠그세요.
무료로 체험 · 기기에서 실행
자주 묻는 질문
Can a flattened PDF form ever be unflattened?
No. Once a PDF is flattened, the interactive fields are permanently fused into the background graphics and cannot be separated back into editable fields.
Does flattening reduce the sharpness of the text?
No. File Acture preserves vector text outlines so your document remains razor-sharp when printed or zoomed in.
Does flattening preserve digital signatures?
Yes. The visual appearance of your signature is permanently locked into place so it cannot be removed or copied.
Are my confidential contracts sent to any server?
No. File Acture executes all PDF modifications locally on your processor with zero internet connections.