Elimine la protección con contraseña de un PDF (requiere la contraseña original).
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每月收到信用卡電子帳單、證券對帳單或薪資明細 PDF 都要重複輸入身分證字號密碼？輸入一次正確密碼即可永久移除密碼鎖，方便個人記帳歸檔與合併整理。
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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.