# Signing PDF Documents

> Sign the whole PDF or PDF/A document with DigitalSignature and SaveSettings: merged documents, byte arrays, ASP.NET Core, errors and what happens after signing.

- **Product:** TX Text Control .NET Server
- **Section:** Documentation
- **Kind:** Topic
- **Path:** TX Text Control .NET Server > Digital Signatures > Signing PDF Documents
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/llms-full.txt

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## On This Page

- [How Signing Works in TX Text Control](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#how-signing-works-in-tx-text-control)
- [Sign a Merged Document](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#sign-a-merged-document)
- [Return a Signed PDF From ASP.NET Core](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#return-a-signed-pdf-from-asp-net-core)
- [Handle Certificate and Time Server Errors](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#handle-certificate-and-time-server-errors)
- [Combine Signatures With Passwords](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#combine-signatures-with-passwords)
- [After the Document Is Signed](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#after-the-document-is-signed)
- [Next Steps](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/#next-steps)

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## Nearby

- **Previous:** [Overview](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/overview/llms.txt)
- **Next:** [Certificate-Based Signatures](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/llms.txt)