PDFをマージPDFを分割PDFを圧縮

PDFを平坦化

PDFのフォームと注釈を平坦化します。

またはここにPDFをドロップ

100% プライベートファイルはどのサーバーにもアップロードされません
ローカルで処理より高速な処理、サイズ制限なし

完全ガイド: PDFを平坦化

Flattening a PDF merges all interactive layers — form fields, annotations, comments, and markup — into the base document, creating a static, non-editable version. This is essential when you need to finalize a filled-out form, lock in comments and annotations, or prepare a document for printing or archiving where interactivity is no longer needed. Without flattening, form fields remain editable and annotations can be modified or deleted by recipients. A flattened PDF looks identical to the original but all interactive elements become permanent visual content baked into each page. iLoveDoc's Flatten PDF tool handles all types of interactive elements: text fields, checkboxes, radio buttons, dropdown menus, digital signatures, sticky notes, highlight annotations, drawing markup, and stamp annotations. The flattened output is compatible with all PDF viewers and prints exactly as it appears on screen. Processing occurs entirely in your browser, making it safe for flattening sensitive filled forms like tax documents, medical intake forms, or signed contracts.

PDFを平坦化 の使い方

  1. 1Upload your PDF containing form fields, annotations, or interactive elements.
  2. 2The tool automatically detects all interactive layers in the document.
  3. 3Preview the document to verify all form data and annotations are correct before flattening.
  4. 4Click "Flatten PDF" to merge all interactive elements into the base document.
  5. 5Download the flattened PDF — all form fields and annotations are now permanent and non-editable.

PDFを平坦化 の使用例

Form Submission

Flatten completed application forms, tax documents, or surveys before submission to prevent recipients from altering your responses.

Document Archiving

Create permanent, tamper-proof versions of annotated documents for long-term archival storage.

Print Preparation

Ensure forms and annotated documents print exactly as they appear on screen by flattening all interactive layers.

iLoveDocで PDFを平坦化 を使用する理由

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ファイルは完全にブラウザ内で処理されます。当社のサーバーにアップロードされることはなく、完全な機密性とデータ保護が保証されます。

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PDFを平坦化 は完全に無料で使用でき、登録は不要で、ファイルサイズの制限もありません。必要なだけ何度でも使用できます。

ローカルブラウザテクノロジーにより、処理は瞬時に行われます。待ち時間、キュー、サーバーの遅延はありません。

PDFを平坦化 に関するよくある質問

What does flattening a PDF actually do?

Flattening converts all interactive elements (form fields, annotations, comments) into static visual content. The flattened PDF looks the same but nothing can be edited, filled, or deleted.

Will my filled-in form data be preserved?

Yes. All data entered into form fields is permanently embedded into the document. The values become part of the page content rather than editable fields.

Can I un-flatten a PDF?

No. Flattening is a one-way process. Once interactive elements are merged into the base layer, they cannot be separated again. Always keep a copy of the original before flattening.

Does flattening reduce file size?

It can slightly reduce file size by removing the interactive form structure, but the visual content remains, so the reduction is usually modest.

Is flattening necessary before printing?

Not always, but flattening ensures that what you see on screen is exactly what prints. Some printers handle interactive elements inconsistently, so flattening eliminates this risk.