验证签名
验证PDF文档中的数字签名。检查证书有效性、签名者信息和文档完整性。
Clear file handling
Built for real workflows
Progress and feedback
Useful options, not clutter
Upload Signed PDF
Drag and drop a signed 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
JSON
Batch
10 files per run
10 files 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 Digital Sign Pdf
Bulk-readyFinish the job after Validate Signature with a relevant MAXScanner tool, without creating a duplicate converter page.
- Validate Signature
- Digital Sign PdfWorkflow-ready
Best when Validate Signature is only the first step in your workflow.
ContinueContinue with Decrypt Pdf
Bulk-readyFinish the job after Validate Signature with a relevant MAXScanner tool, without creating a duplicate converter page.
- Validate Signature
- Decrypt PdfWorkflow-ready
Best when Validate Signature is only the first step in your workflow.
ContinueMake the next step easier
Use Validate Signature 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 Validate Signature
- 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 Validate Signature
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
验证签名工具允许您验证PDF文档中的数字签名。检查签名是否有效，查看证书信息，并确认文档完整性。
上传已签名的PDF，查看所有签名、其有效性状态、签名者信息，以及文档在签名后是否被修改。
所有验证都在浏览器本地进行，您的文档永远不会上传到任何服务器。
How to Use
上传已签名PDF
上传包含数字签名的PDF文档。
查看结果
查看文档中找到的所有签名及其有效性状态。
检查详情
查看证书信息、签名者详情和签名时间戳。
导出报告
可选下载验证结果的JSON报告。
Use Cases
文档验证
验证签名文档是否真实且未被篡改。
合规审计
检查签名有效性以满足合规和审计要求。
证书审查
查看已签名文档的证书详情和到期日期。
Frequently Asked Questions
"有效"是什么意思？+
有效签名意味着文档自签名以来未被修改，且证书链完整。
可以验证多个PDF吗？+
是的，您可以上传多个PDF并批量验证所有签名。
为什么签名可能无效？+
如果文档被修改、证书过期或证书不受信任，签名可能无效。