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File uploader
<gcds-file-uploader>

Also called: file upload, file input, dropzone. A file uploader is a space to select and add supporting documentation.
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File uploader component preview

On this page

Coding and accessibility for file uploader

Apply required attributes

Always use the following required attributes with gcds-file-uploader:
  • name
  • label
  • uploader-id

Allow multiple files

Use the multiple attribute to allow the selection of more than one file.

Define file types

Use the accept attribute to define the file types that the file uploader can accept. Add hint text
  • Use the hint attribute to add hint text.
  • Avoid adding hint text in the field where it will disappear once the field is selected or a response starts to be entered.
Hide the label
  • Set the hide-label attribute to true to visually hide the label while maintaining it for assistive technologies.
  • Avoid adding hint text when the label is hidden.
Add validation and error messages
  • Use the required attribute to activate the built-in error messages and validation for file uploader.
  • Fields with specific input requirements will validate if the entry is invalid, even if it is not required.
  • For optional fields that need validation, like email address formats, add custom validation with a custom error message.

Examples

Explore the different ways you can configure the component. Each example shows a working implementation and ready-to-copy code.

In this section

Essential attributes

These attributes are needed for the component to function correctly.

label

The label attribute defines the label for the file uploader. 
<gcds-file-uploader
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

name

The name attribute identifies the file uploader component within a form. It is used to reference the uploaded files when a form is submitted. 
<gcds-file-uploader
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

uploader-id

The uploader-id attribute specifies the unique identifier for the file uploader. 
<gcds-file-uploader
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

Optional attributes

These attributes allow you to customize or extend the component’s behaviour and presentation.

accept

The accept attribute defines the file types the file uploader accepts. 
<gcds-file-uploader
  accept="image/*"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

autofocus

The autofocus attribute controls whether the file uploader will be focused automatically when the page loads. By default, it is set to false. When set to true, the file uploader is focused on render. 
<gcds-file-uploader
  autofocus="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

disabled

The disabled attribute controls whether the file uploader is disabled or not. By default, it is set to false. 
<gcds-file-uploader
  disabled="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

error-message

The error-message attribute defines the error message to display for an invalid file input. 
<gcds-file-uploader
  error-message="Error message"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

form

The form attribute specifies the ID of the form that the file uploader belongs to. 
<gcds-file-uploader
  form="form-id"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

hide-label

The hide-label attribute controls whether the label is hidden or not. 
<gcds-file-uploader
  hide-label="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

hint

The hint attribute defines the hint text displayed under the label. 
<gcds-file-uploader
  hint="Hint / Example message."
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

multiple

The multiple attribute controls whether the user is allowed to select more than one file. 
<gcds-file-uploader
  multiple="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

required

The required attribute controls whether the file input is required or not. When set to true, it adds “required” after the label, and activates the required validator. 
<gcds-file-uploader
  required="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>

validate-on

The validate-on attribute defines the validation event for the file uploader. 
<gcds-file-uploader
  validate-on="other"
  required="true"
  uploader-id="file-uploader-preview"
  label="Label"
  name="file-uploader-preview"
></gcds-file-uploader>
Code builder Generate an instance of the component you need by selecting its code properties.
  • Explore by choosing different code values to generate the instance you want.
  • Get the code and pull it into your environment.
  • Add any copy you need to the component (like text for a label).
Note: The code builder uses English for all code elements, which follows standard practice.
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2026-06-10