解锁 PDF

立即解除任意 PDF 的密码保护，恢复对文档的完全访问。

提示：您还可以将 PDF 拖放到该区域的任何位置。

最大文件大小：50 MB · 今天剩余操作：20

PDF Clinic's Unlock PDF tool helps you remove passwords when you have the correct credentials. Whether you need to you need to merge or edit a protected file you own or automation fails because a PDF is encrypted, you can complete the job in your browser on desktop, tablet, or phone. Files are transferred over encrypted connections, processed on our servers, and removed according to our retention policy so your documents are not kept longer than necessary.

What this tool does

The Unlock PDF feature is built for everyday document work: remove passwords when you have the correct credentials

Upload one or more files, adjust the options shown for your task, and download the result when processing finishes. Registered accounts may have higher file-size and daily operation limits for heavier workloads.

When to use it

Choose Unlock PDF when you need to merge or edit a protected file you own. It is also a practical choice when automation fails because a PDF is encrypted.

Students, freelancers, HR teams, and finance departments use PDF Clinic to avoid desktop software licenses while keeping a consistent workflow across devices.

How to get the best results

Only unlock documents you are authorized to access.

How it works

  1. Open the Unlock PDF page and select or drag your file(s) into the upload area.
  2. Review any options (page range, quality, output format) shown for your task.
  3. Start processing and wait for the progress indicator to complete.
  4. Download your file and verify the output before sharing it externally.

Frequently asked questions

Yes. PDF Clinic is free to use. Anonymous and registered accounts may have different daily limits on file size and number of operations; sign in to see your limits on the upload screen.
No. Uploaded files are kept only as long as needed to complete your request and are deleted automatically within 24 hours under our retention policy.
No. PDF Clinic runs entirely in your web browser.
Supported inputs depend on the tool; most PDF tools accept standard PDF files. Converters also accept Office or image formats listed on the upload screen.

Related guides

Unlock Password-Protected PDFs You Own