# S3 file uploader

## Overview

*Upload to S3* is a button to upload files to Amazon S3. The uploader allows you to set ACL and specify file type restrictions and MIME types.

<figure><img src="/files/9iXRYWG3hNz8a6HZ2RxB" alt=""><figcaption></figcaption></figure>

### Properties

<table><thead><tr><th width="196.74609375">Name</th><th width="96.07421875">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>name</code></td><td><code>string</code></td><td>Component name</td></tr><tr><td><code>lastUploadedFileUrl</code></td><td><code>string</code></td><td>S3 URL of the last uploaded file</td></tr><tr><td><code>lastUploadedFileName</code></td><td><code>string</code></td><td>Name of the last uploaded file</td></tr></tbody></table>

### Triggers

<table><thead><tr><th width="173.5625">Name</th><th>Description</th></tr></thead><tbody><tr><td><strong>On Upload Success</strong></td><td>Triggered when a file is successfully uploaded</td></tr></tbody></table>

## Working with the component

If you are planning to use the S3 file uploader in UI Bakery, you first need to [connect your Amazon S3 as a data source](/reference/data-sources/amazon-s3.md) and [set up **CORS policies**](/reference/data-sources/amazon-s3.md#allowing-cors-for-s3-file-upload) for your bucket.

### To upload files to S3:

1. Add the **S3 file uploader** component to the working area.
2. Select the necessary *S3 data source* from the dropdown, specify the bucket, and set up other required settings.

<figure><img src="/files/4tVmDEzEuGx0864AGxmN" alt=""><figcaption></figcaption></figure>

3. Next, click on the component and select the necessary file to upload it.

Once it's uploaded, you will notice that the `lastUploadedFileUrl` is an S3 URL, and you can refer to it with the `{{ui.s3FileUploader.lastUploadedFileUrl}}` variable.

Also, If you need to call any action upon the file upload, you can use the **On Upload Success** trigger of the component.


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