PDF Audit Trail & Digital Verification Certificate Generator
Create legal-grade digital certificates of completion with SHA-256 cryptographic hashes and verification QR codes.
在您的瀏覽器中執行。您的檔案不會離開裝置。 瞭解如何驗證
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使用方法
- 1選擇設定
填寫資訊或選擇您需要的選項。
- 2檢視結果
更改任何內容時，預覽會立即更新。
- 3下載或儲存
將結果儲存到您的裝置。不會向伺服器傳送或儲存任何內容。
關於此工具
Generate an official Audit Trail and Digital Verification Certificate for any PDF contract or signed document. Computes client-side SHA-256 and SHA-512 cryptographic digests to prove the document has not been altered, records signer identities, timestamps, and verification methods compliant with ESIGN and eIDAS standards. Download as a standalone A4 certificate PDF, append it as the final verified page of your document, or export the audit log in JSON.
獲得最佳結果的提示
開始之前請花一點時間閱讀選項，並先用一個小例子試用工具。一切都在您裝置的瀏覽器中執行；您輸入或新增的任何內容都不會被上傳，關閉標籤頁會清除所有內容。如果看起來不對，請重新整理頁面重試，或使用本頁的報告連結告訴我們出了什麼問題。如果結果仍然看起來不對，請每次只更改一個值，看看哪個輸入影響最大。如果您還會再用，請收藏此頁。
要點
- 分類: 編輯與簽名
- 在瀏覽器中執行，無需註冊，無需上傳。
- 您輸入的資訊保留在裝置上。
- 提供多種語言。
- 內容最後稽核日期:
常見問題
What is a document audit trail certificate?
It is a legal record that records the cryptographic fingerprint (SHA-256 hash), signing timestamp, and signer identities of a document, proving it has not been modified after signing.
Are my contracts or confidential files sent to a server?
No. The entire cryptographic checksum calculation and PDF certificate rendering occur locally in your browser using the Web Crypto API. Your documents remain strictly confidential.
Can I append the certificate to my signed PDF?
Yes. With one click, the tool merges the official Certificate of Completion as the final page of your PDF agreement.
Does this comply with ESIGN and eIDAS standards?
Yes. The cryptographic hash and timestamped signer record meet the technical requirements for tamper-evident digital audit logs.