> For the complete documentation index, see [llms.txt](https://neomatrixcode.gitbook.io/faker/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://neomatrixcode.gitbook.io/faker/guide/providers/file.md).

# File

{% hint style="info" %}
All parameters are optional. The sample parameters are the default values used by each function.
{% endhint %}

```rust
Faker.mime_type()
=> audio/x-ms-wax


Faker.file_extension()
=> otp


Faker.file_name()
=> KksP.vxml

```