# Bootstrap 5 Images

Documentation and examples for opting images into responsive behavior and add lightweight styles to them using CSS classes.

## Responsive images

Images in Bootstrap are made responsive with `.img-fluid`. This applies `max-width: 100%;` and `height: auto;` to the image so that it scales with the parent element.

```html
<img src="..." class="img-fluid" alt="...">
```

## Image thumbnails

In addition to our [border-radius utilities](/bootstrap/docs/utilities/borders/), you can use `.img-thumbnail` to give an image a rounded 1px border appearance.

```html
<img src="..." class="img-thumbnail" alt="...">
```

## Aligning images

Align images with the [helper float classes](/bootstrap/docs/utilities/float/) or [text alignment classes](/bootstrap/docs/utilities/text/#text-alignment). `block`-level images can be centered using [the `.mx-auto` margin utility class](/bootstrap/docs/utilities/spacing/#horizontal-centering).

```html
<img src="..." class="rounded float-start" alt="...">
<img src="..." class="rounded float-end" alt="...">
```

```html
<img src="..." class="rounded mx-auto d-block" alt="...">
```

```html
<div class="text-center">
  <img src="..." class="rounded" alt="...">
</div>
```

## Picture

If you are using the `<picture>` element to specify multiple `<source>` elements for a specific `<img />`, make sure to add the `.img-*` classes to the `<img />` and not to the `<picture>` tag.

```html
​<picture>
  <source srcset="..." type="image/svg+xml">
  <img src="..." class="img-fluid img-thumbnail" alt="...">
</picture>
```

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