> For the complete documentation index, see [llms.txt](https://guide.signify.gov.sg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.signify.gov.sg/user-guides/certificate-guide/loading-singpass-root-signing-certificate.md).

# Loading Singpass root signing certificate

In order to verify if a Sign with Singpass signature is valid, see [here](/user-guides/certificate-guide/verifying-sign-with-singpass-signatures.md). 

{% hint style="info" %}
From February 2025 onwards, some Singpass Signing Certificates will be issued by a new Root CA. Please ensure that you load **both Root CA Certificates** in your Adobe Acrobat Reader in order to validate your documents.
{% endhint %}

Before that, the Singpass root signing certificates must be installed on your device. If you do not have the 2 Singpass root signing certificates on your device, **please follow the steps in** [**Sign with Singpass' guide**](https://docs.sign.singpass.gov.sg/for-users/verifying-sign-with-singpass-signatures/loading-singpass-root-signing-certificate)**.**


---

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