数字签名
为PDF文档添加X.509数字签名。使用PFX、P12或PEM证书签署PDF，具有法律效力。
Clear file handling
Built for real workflows
Progress and feedback
Useful options, not clutter
Upload PDF to Sign
Drag and drop a PDF file here, or click to browse.
Smart workflow
Do more in the same workflow
Build from the job you started: batch compatible files, keep the right output format, then move straight into the next useful step without hunting through the site.
Input
Output
Batch
1 file per run
1 file per run. Use one run when the files share the same task.
Choose a related operation below instead of starting from scratch.
Results stay focused on download, preview and the next useful action.
No fixed file-size limit per configured tool limit.
Natural next steps
Continue with a related tool using the same file workflow.
Smart workflows
Finish the job, not just the file
Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.
Continue with Validate Signature
Bulk-readyFinish the job after Digital Sign Pdf with a relevant MAXScanner tool, without creating a duplicate converter page.
- Digital Sign Pdf
- Validate SignatureBulk processing · ZIP-ready output · Workflow-ready
Best when Digital Sign Pdf is only the first step in your workflow.
ContinueContinue with Encrypt Pdf
Finish the job after Digital Sign Pdf with a relevant MAXScanner tool, without creating a duplicate converter page.
- Digital Sign Pdf
- Encrypt PdfWorkflow-ready
Best when Digital Sign Pdf is only the first step in your workflow.
ContinueMake the next step easier
Use Digital Sign Pdf as part of a complete document workflow: process the file, review the result, then continue into the next useful step instead of returning to a generic tools catalogue.
Clear file-to-result workflow
Useful controls without unnecessary clutter
Mobile-friendly processing experience
Continue directly into related tools
A smoother workflow
- 1Add the file for Digital Sign Pdf
- 2Choose only the settings that matter for the destination
- 3Process and review the result
- 4Continue to the next useful tool when the job is not finished
A human tip
The useful version of Digital Sign Pdf
A conversion tool is most valuable when it removes the work around the conversion. People usually arrive with a destination in mind—an upload, a submission, an email, a report, a website or another editing step. The page should make that destination obvious, keep the interface focused, and offer a sensible next action when the first operation is only part of the job.
About This Tool
数字签名工具允许您为PDF文档添加加密的X.509数字签名。与简单的手绘签名不同，数字签名提供法律效力和文档完整性验证。
上传您的证书文件（PFX、P12或PEM格式），输入密码，即可签署PDF。您可以添加带有自定义文本、图像和位置的可见签名，或仅用于文档完整性的不可见签名。
所有签名操作都在浏览器本地进行，您的证书和文档永远不会上传到任何服务器。
How to Use
上传PDF
上传需要数字签名的PDF文档。
加载证书
上传X.509证书文件（.pfx、.p12或.pem）并输入密码。
配置签名
可选添加签名原因、位置，以及带有自定义文本或图像的可见签名。
签名并下载
点击签名PDF应用数字签名并下载签名后的文档。
Use Cases
法律文件
使用具有法律约束力的数字签名签署合同、协议和法律文件。
商业审批
数字签署发票、采购订单和审批文件以建立审计跟踪。
文档完整性
确保文档在签名后未被篡改。
Frequently Asked Questions
支持哪些证书格式？+
支持PFX（.pfx）、PKCS#12（.p12）和PEM（.pem）证书格式。
签名具有法律效力吗？+
是的，使用有效证书的X.509数字签名在大多数司法管辖区具有法律认可。
可以添加可见签名吗？+
是的，您可以添加带有自定义文本、图像、位置和样式的可见签名。