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Styling the Native File Picker Button

::file-selector-button targets the button inside a file input.

What it is and why to use it

::file-selector-button targets the button inside a file input. It lets the native chooser keep its built-in behaviour while making the button fit a design. This is useful when a standard input provides the needed interaction and there is no reason to hide it behind a custom imitation.

Common mistakes and limitations

Button wording and native details vary by browser and operating system. Styling is not file validation: accept filters are hints and servers must validate uploads. Keep a visible keyboard focus indicator on the control.

Try the example

The example pairs editable CSS with its own HTML preview. Run it, then change one declaration at a time and compare the result. Locally, put the CSS in a style element in the document head or in an external stylesheet linked from the HTML. Feature support varies by browser and version; use the linked reference and a useful fallback where needed.

HTML used by this example

<label for="attachment">Choose a practice file</label><input class="upload" id="attachment" type="file"><p>This demo does not upload files.</p>

Syntax

input::file-selector-button { ... }

Examples

Styling the Native File Picker Button

Run the CSS against the supplied HTML, then experiment with the values.

.upload { display: block; margin-block: .75rem; max-width: 100%; }
.upload::file-selector-button { padding: .6rem; margin-inline-end: .75rem; border: 1px solid #2563eb; border-radius: .25rem; background: #dbeafe; color: #172b4d; color: #0f172a; }
  1. The labelled file input retains the browser’s chooser interaction.
  2. The pseudo-element targets its button without replacing the filename display.
  3. Selecting a local file does not send it anywhere in this standalone example. Actual uploading requires separately implemented application and server logic.
HTML used by this example
<div class="demo"><label for="attachment">Choose a practice file</label><input class="upload" id="attachment" type="file"><p>This demo does not upload files.</p></div>

Best practices

  • Button wording and native details vary by browser and operating system. Styling is not file validation: accept filters are hints and servers must validate uploads. Keep a visible keyboard focus indicator on the control.
  • Inspect the relevant browser reference and test the browsers used by your audience.

Runtime & versions

Web browsers. Feature availability depends on the language and runtime version used by your project; consult the official reference below.

CSS specifications (modules)

Specifications & further reading