PDF に署名
署名をどの PDF ページにも配置・拡縮・日付付きで。
- 100% デバイス内処理
- クラウドへの送信なし
- 透かし(ウォーターマーク)なし
安全な完全ローカル設計
完全にサンドボックス化されたローカルメモリで動作。すべての処理はお使いのスマートフォンのプロセッサ上で直接実行されます。
1秒未満(約300ms以下)
0 KB(通信不要)
PDF に署名にScanOrbitが選ばれる理由
アカウント登録やクラウド不要で、高速・高画質・完全なプライバシーを両立します。
3 Flexible Signing Modes
Draw your signature smoothly with your finger or stylus, type your name using elegant typographic scripts, or scan a physical ink signature from paper.
Transparent Vector Ink
Scanned paper signatures automatically have their white background stripped away, creating a clean transparent stamp that overlays contracts naturally.
Reusable Signature Vault
Save your verified signatures and company stamps in a secure local vault. Apply them across dozens of pages in seconds with precision pinch-to-scale controls.
簡単な3ステップの使い方
専門知識は一切不要。わずか数秒でプロ品質の書類が完成します。
Open Your PDF Document
Load any PDF contract, agreement, or scanned document directly from your device storage or camera scan.
Select or Create Your Signature
Choose an existing saved signature or create a new one by drawing, typing, or scanning from paper.
Place, Resize, and Flatten
Drag the signature to the exact signature line, adjust the size, and tap Done. The PDF is permanently rendered and saved offline.
技術仕様と標準規格
- Signature Input Methods
- Finger / Stylus Draw, Font Styling, Paper Scan Digitization
- Rendering Engine
- High-Resolution Vector Overlay (Lossless PDF Rendering)
- Multi-Page Support
- Sign single pages or multiple contract sections
- Privacy & Watermark
- Zero Watermark, Zero Third-Party Cloud Sign-In
- Output Standards
- ISO 32000-1 Compatible PDF Output
PDF に署名に関するFAQ
Are signatures created in ScanOrbit legally binding?
Yes. Electronic signatures generated and embedded into PDF documents are widely accepted for standard business agreements, contracts, and lease documents under e-signature frameworks like the ESIGN Act and eIDAS.
Can I scan my real handwritten signature from a piece of paper?
Yes! ScanOrbit includes a specialized signature scanner (`sig-scan`) that photographs a pen-and-paper signature, crops the ink, removes the paper background, and saves it as a transparent digital stamp.
Does ScanOrbit put a trial watermark on signed documents?
Never. All documents exported from ScanOrbit are 100% clean, professional, and free of any watermarks or advertising tags.
その他のスキャン&PDF便利ツール
AndroidでPDF に署名を利用する
インターネット通信やデータ追跡なしで、27種類の全ツールをスマートフォン上で安全にご利用いただけます。