每次用户打開 PDF 文檔時,在加密後,都需要輸入密碼才能訪問和打開該 PDF 文檔。
1。上傳您的文件
您可以放心,您的文件是通過加密連接安全上傳的。文件處理後將永久刪除。
- 要從計算機上傳文件,請單擊「上傳 PDF 文件」,然後選擇要加密的文件,或者將文件拖放到頁面。
- 要從 Dropbox、Google 雲端硬盤或文件所在的網站上傳文件,請展開下拉列表並選擇您的文件。
- 您可以一次上傳 1 個文檔以獲得免費帳户,而已升級的帳户 可以批量處理和上傳20 個文件。
2。 Open 密碼 and Owner 密碼
一個打開密碼 is a password required when a document is accessed/viewed/opened。 To add an 打開密碼, c設置一個強密碼並將其輸入到密碼 textbox。 A 16-character password (or more) with numbers and symbols is highly recommended。
一個所有者密碼is a password required to readers when they try to make changes on the document。 You can add this protection by clicking 更多選項 ,然後在 Require a password to change permissions。
3。 Create Optional PDF Restrictions
You may also add restrictions to the use of your document。 Each feature and function can be limited by ticking the boxes on More Options。
For example: you can disable filling up forms, commenting on the document and modifying it by ticking the box in the selection。
You can also restrict printing, copying text, rotating pages, deleting pages or inserting pages。
4。 下載
創建密碼並修改限制後,單擊“Encrypt PDF。” 然後單擊」下載” after processing to save it on your computer。 You may also save it in your online storage such as Dropbox or Google Drive, share it via email, print the new document, rename or even continue editing with a new task。