src/README.md

---
title: Gradio Browser Component
sdk: gradio
sdk_version: 5.49.0
app_file: app.py
pinned: false
---

# `gradio_browser`
<a href="https://pypi.org/project/gradio_browser/" target="_blank"><img alt="PyPI - Version" src="https://img.shields.io/pypi/v/gradio_browser"></a>  

Gradio Component
## Installation

```bash
pip install gradio_browser
```

## Usage

```python
import gradio as gr
from gradio_browser import Browser

with gr.Blocks(title="Browser Component Demo", fill_height=True) as demo:
    gr.Markdown("# 🌐 Custom Browser Component")

    with gr.Row():
        with gr.Column(scale=1):
            gr.Markdown("### Controls")
            url_input = gr.Textbox(
                label="Enter URL",
                value="https://www.gradio.app/",
                placeholder="https://www.gradio.app/",
            )

            show_hostname = gr.Checkbox(
                label="Show full hostname in address bar", value=True
            )

            gr.Markdown(
                """
            ### Features:
            - ← → Navigation buttons with history
            - ↻ Refresh button  
            - ↗ Open in new tab button
            - Address bar supports both full URLs and paths
            - Enter key navigation
            """
            )

            gr.Markdown("### Try these URLs:")

            gr.Button("Gradio.com").click(
                lambda: "https://www.gradio.app/", outputs=[url_input]
            )
            gr.Button("Example.com").click(
                lambda: "https://example.com", outputs=[url_input]
            )

        with gr.Column(scale=3):
            browser = Browser(
                url="https://example.com",
                show_hostname=True,
                min_height="600px",
                scale=1,
            )

    # Update browser when URL changes
    url_input.change(lambda url: url, inputs=[url_input], outputs=[browser])

    # Update show_hostname setting (requires component rebuild)
    show_hostname.change(
        lambda show_host, url: Browser(value=url, show_hostname=show_host),
        inputs=[show_hostname, url_input],
        outputs=[browser],
    )


if __name__ == "__main__":
    demo.launch()

```

## `Browser`

### Initialization

<table>
<thead>
<tr>
<th align="left">name</th>
<th align="left" style="width: 25%;">type</th>
<th align="left">default</th>
<th align="left">description</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left"><code>value</code></td>
<td align="left" style="width: 25%;">

```python
str | Callable | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">URL to display in the browser iframe</td>
</tr>

<tr>
<td align="left"><code>url</code></td>
<td align="left" style="width: 25%;">

```python
str
```

</td>
<td align="left"><code>"https://example.com"</code></td>
<td align="left">Initial URL to load in the browser</td>
</tr>

<tr>
<td align="left"><code>width</code></td>
<td align="left" style="width: 25%;">

```python
str
```

</td>
<td align="left"><code>"100%"</code></td>
<td align="left">Width of the browser component</td>
</tr>

<tr>
<td align="left"><code>min_height</code></td>
<td align="left" style="width: 25%;">

```python
str
```

</td>
<td align="left"><code>"500px"</code></td>
<td align="left">Minimum height of the browser component</td>
</tr>

<tr>
<td align="left"><code>show_hostname</code></td>
<td align="left" style="width: 25%;">

```python
bool
```

</td>
<td align="left"><code>False</code></td>
<td align="left">If True, shows full URL in address bar; if False, shows only path</td>
</tr>

<tr>
<td align="left"><code>placeholder</code></td>
<td align="left" style="width: 25%;">

```python
str | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">placeholder hint to provide behind textbox.</td>
</tr>

<tr>
<td align="left"><code>label</code></td>
<td align="left" style="width: 25%;">

```python
str | I18nData | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">the label for this component</td>
</tr>

<tr>
<td align="left"><code>every</code></td>
<td align="left" style="width: 25%;">

```python
Timer | float | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">Continously calls `value` to recalculate it if `value` is a function</td>
</tr>

<tr>
<td align="left"><code>inputs</code></td>
<td align="left" style="width: 25%;">

```python
Component | Sequence[Component] | set[Component] | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">Components that are used as inputs to calculate `value` if `value` is a function</td>
</tr>

<tr>
<td align="left"><code>show_label</code></td>
<td align="left" style="width: 25%;">

```python
bool | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">if True, will display label.</td>
</tr>

<tr>
<td align="left"><code>scale</code></td>
<td align="left" style="width: 25%;">

```python
int | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">relative size compared to adjacent Components</td>
</tr>

<tr>
<td align="left"><code>min_width</code></td>
<td align="left" style="width: 25%;">

```python
int
```

</td>
<td align="left"><code>160</code></td>
<td align="left">minimum pixel width</td>
</tr>

<tr>
<td align="left"><code>interactive</code></td>
<td align="left" style="width: 25%;">

```python
bool | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">if True, will be rendered as an editable component</td>
</tr>

<tr>
<td align="left"><code>visible</code></td>
<td align="left" style="width: 25%;">

```python
bool | Literal["hidden"]
```

</td>
<td align="left"><code>True</code></td>
<td align="left">If False, component will be hidden</td>
</tr>

<tr>
<td align="left"><code>rtl</code></td>
<td align="left" style="width: 25%;">

```python
bool
```

</td>
<td align="left"><code>False</code></td>
<td align="left">If True, sets the direction of the text to right-to-left</td>
</tr>

<tr>
<td align="left"><code>elem_id</code></td>
<td align="left" style="width: 25%;">

```python
str | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">An optional string that is assigned as the id of this component in the HTML DOM</td>
</tr>

<tr>
<td align="left"><code>elem_classes</code></td>
<td align="left" style="width: 25%;">

```python
list[str] | str | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">An optional list of strings that are assigned as the classes of this component in the HTML DOM</td>
</tr>

<tr>
<td align="left"><code>render</code></td>
<td align="left" style="width: 25%;">

```python
bool
```

</td>
<td align="left"><code>True</code></td>
<td align="left">If False, component will not render be rendered in the Blocks context</td>
</tr>

<tr>
<td align="left"><code>key</code></td>
<td align="left" style="width: 25%;">

```python
int | str | tuple[int | str, ...] | None
```

</td>
<td align="left"><code>None</code></td>
<td align="left">in a gr.render, Components with the same key across re-renders are treated as the same component</td>
</tr>

<tr>
<td align="left"><code>preserved_by_key</code></td>
<td align="left" style="width: 25%;">

```python
list[str] | str | None
```

</td>
<td align="left"><code>"value"</code></td>
<td align="left">A list of parameters from this component's constructor</td>
</tr>
</tbody></table>


### Events

| name | description |
|:-----|:------------|
| `change` | Triggered when the value of the Browser changes either because of user input (e.g. a user types in a textbox) OR because of a function update (e.g. an image receives a value from the output of an event trigger). See `.input()` for a listener that is only triggered by user input. |
| `input` | This listener is triggered when the user changes the value of the Browser. |
| `submit` | This listener is triggered when the user presses the Enter key while the Browser is focused. |



### User function

The impact on the users predict function varies depending on whether the component is used as an input or output for an event (or both).

- When used as an Input, the component only impacts the input signature of the user function.
- When used as an output, the component only impacts the return signature of the user function.

The code snippet below is accurate in cases where the component is used as both an input and an output.

- **As output:** Is passed, passes URL value as a {str} into the function.
- **As input:** Should return, expects a URL {str} to display in browser.

 ```python
 def predict(
     value: str | None
 ) -> str | None:
     return value
 ```