無料PDF＆Word文書 電子スタンプ・押印ツール | onlinestampgenerator.com
PDFやWord（.docx）の請求書や契約書にブラウザ上で安全に電子押印・サイン。サーバー送信一切なし。
Direct PDF & Word Document Stamper
Stamp, sign, and endorse PDF and Word (.docx) invoices, contracts & certificates with 100% in-browser privacy.
Click to Upload or Drag & Drop Document
Upload any PDF (.pdf) or Microsoft Word (.docx, .doc) contract, invoice, receipt, or declaration. Processed 100% locally in your browser.
💡Click anywhere on the document sheet above to position your stamp.
How to Add a Digital Stamp to PDF & Word Files
1. Upload PDF or Word (.docx)
Drag and drop your PDF or Microsoft Word document into the box above. The document is decoded entirely in your local browser memory without uploading to any remote server.
2. Position & Angle Stamp
Select your custom design from the Stamp Studio or choose an official notary seal preset. Click anywhere on the document canvas to position the stamp, and fine-tune tilt (-30° to +30°) for an authentic ink press.
3. Instant Download
Click "Download Stamped Document". Your file is instantly generated with high-resolution vector and transparent ink overlay, ready for official submission.