# Base64Action

> This document is the Markdown version of [valibot.dev/api/Base64Action/](https://valibot.dev/api/Base64Action/). For the complete documentation index, see [llms.txt](https://valibot.dev/llms.txt).

Base64 action interface.

## Generics

- `TInput` `extends string`
- `TMessage` `extends ErrorMessage<Base64Issue<TInput>> | undefined`

## Definition

- `Base64Action` `extends BaseValidation<TInput, TInput, Base64Issue<TInput>>`
  - `type` `'base64'`
  - `reference` `typeof base64`
  - `expects` `null`
  - `requirement` `RegExp`
  - `message` `TMessage`