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Aimee Ukasick 53b083b8c5 Docs: Nomad IA (#26063)
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Co-authored-by: Tu Nguyen <im2nguyen@gmail.com>
2025-07-08 19:24:52 -05:00

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---
layout: docs
page_title: filebase64 - Functions - Configuration Language
description: |-
The filebase64 function reads the contents of the file at the given path and
returns them as a base64-encoded string.
---
# `filebase64` Function
`filebase64` reads the contents of a file at the given path and returns them as
a base64-encoded string.
```hcl
filebase64(path)
```
The result is a Base64 representation of the raw bytes in the given file.
Nomad uses the "standard" Base64 alphabet as defined in
[RFC 4648 section 4](https://tools.ietf.org/html/rfc4648#section-4).
## Examples
```
> filebase64("${path.module}/hello.txt")
SGVsbG8gV29ybGQ=
```
## Related Functions
* [`file`](/nomad/docs/reference/hcl2/functions/file/file) also reads the contents of a given file,
but interprets the data as UTF-8 text and returns the result directly
as a string, without any further encoding.
* [`base64decode`](/nomad/docs/reference/hcl2/functions/encoding/base64decode) can decode a
Base64 string representing bytes in UTF-8, but in practice `base64decode(filebase64(...))`
is equivalent to the shorter expression `file(...)`.