PDFを暗号化

PDFにパスワードを設定し、不正なアクセスから内容を保護します。

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または

100% Client-Side Privacy Protection: Processed directly in your browser via WebAssembly so sensitive contracts and statements stay private.

商業級 PDF 密碼保護與機密財報加密工具

為薪資單、銀行對帳單、股東會財報、法律委任契約與報價單設定開啟密碼保護（AES/RC4 標準加密），確保只有授權收件人能檢視敏感內容。

可以！匯出的加密文件完全遵循國際標準 PDF 安全規範，跨平台桌機與行動裝置皆相容。

完全不會！加密金鑰運算於您的瀏覽器本機端執行，若忘記密碼連本站也無法代為還原，請務必妥善保存密碼。

Compare airline & agency fares live with automated business-class error fare alerts.

Compute monthly EMI/EP payments with grace periods and one-click Excel schedule export.

Calculate real APR including origination fees and compare loan refinancing savings.

Simulate long-term ETF & stock dividend reinvestment snowball growth curves.

Merge, split, compress, watermark, and OCR PDFs locally in your browser without uploads.

Enhance blurry photos and upscale resolution locally in your browser for free.