---
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title: Base64 Utility Functions
collection: developer
version: current
locale: en-us
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canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ssjs_utilitiesBase64.html
source_site: developer.salesforce.com
content_type: documentation
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  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# Base64 Utility Functions

Use these functions to encode and decode strings using the Base64 standard.

## Load

In your Server-side JavaScript code, first load the core library using this syntax:

```
Platform.Load("core","1");
```

Use the associated sample code as models to construct your own Server-side JavaScript code.