---
title: PreviewCard
description: Represents a rich preview card that is generated using OpenGraph tags from a URL.
menu:
docs:
parent: entities
aliases: [
"/entities/card",
"/entities/Card",
"/entities/previewcard",
"/entities/PreviewCard",
"/api/entities/card",
"/api/entities/Card",
"/api/entities/previewcard",
"/api/entities/PreviewCard",
]
---
## Examples
### Video
```json
{
"url": "https://www.youtube.com/watch?v=OMv_EPMED8Y",
"title": "♪ Brand New Friend (Christmas Song!)",
"description": "",
"type": "video",
"author_name": "YOGSCAST Lewis & Simon",
"author_url": "https://www.youtube.com/user/BlueXephos",
"provider_name": "YouTube",
"provider_url": "https://www.youtube.com/",
"html": "",
"width": 480,
"height": 270,
"image": "https://files.mastodon.social/preview_cards/images/014/179/145/original/9cf4b7cf5567b569.jpeg",
"embed_url": "",
"blurhash": "UvK0HNkV,:s9xBR%njog0fo2W=WBS5ozofV@"
}
```
### Photo
```json
{
"url": "https://www.flickr.com/photos/tomfenskephotography/49088768431/",
"title": "Oregon",
"description": "",
"type": "photo",
"author_name": "Tom Fenske Photography",
"author_url": "https://www.flickr.com/photos/tomfenskephotography/",
"provider_name": "Flickr",
"provider_url": "https://www.flickr.com/",
"html": "",
"width": 1024,
"height": 427,
"image": "https://files.mastodon.social/preview_cards/images/014/287/139/original/651b1c6976817824.jpeg",
"embed_url": "https://live.staticflickr.com/65535/49088768431_6a4322b3bb_b.jpg",
"blurhash": "UnE{@jt6M_oIAhjYs+ayT2WBf9ayRkkDXAj["
}
```
### Link
```json
{
"url": "https://www.theguardian.com/money/2019/dec/07/i-lost-my-193000-inheritance-with-one-wrong-digit-on-my-sort-code",
"title": "‘I lost my £193,000 inheritance – with one wrong digit on my sort code’",
"description": "When Peter Teich’s money went to another Barclays customer, the bank offered £25 as a token gesture",
"type": "link",
"author_name": "",
"author_url": "",
"provider_name": "",
"provider_url": "",
"html": "",
"width": 0,
"height": 0,
"image": null,
"embed_url": "",
"blurhash": null
}
```
## Attributes
### `url` {#url}
**Description:** Location of linked resource.\
**Type:** String (URL)\
**Version history:**\
1.0.0 - added
### `title` {#title}
**Description:** Title of linked resource.\
**Type:** String\
**Version history:**\
1.0.0 - added
### `description` {#description}
**Description:** Description of preview.\
**Type:** String\
**Version history:**\
1.0.0 - added
### `type` {#type}
**Description:** The type of the preview card.\
**Type:** String (Enumerable, oneOf)\
`link` = Link OEmbed\
`photo` = Photo OEmbed\
`video` = Video OEmbed\
`rich` = iframe OEmbed. Not currently accepted, so won't show up in practice.\
**Version history:**\
1.3.0 - added
### `author_name` {#author_name}
**Description:** The author of the original resource.\
**Type:** String\
**Version history:**\
1.3.0 - added
### `author_url` {#author_url}
**Description:** A link to the author of the original resource.\
**Type:** String (URL)\
**Version history:**\
1.3.0 - added
### `provider_name` {#provider_name}
**Description:** The provider of the original resource.\
**Type:** String\
**Version history:**\
1.3.0 - added
### `provider_url` {#provider_url}
**Description:** A link to the provider of the original resource.\
**Type:** String (URL)\
**Version history:**\
1.3.0 - added
### `html` {#html}
**Description:** HTML to be used for generating the preview card.\
**Type:** String (HTML)\
**Version history:**\
1.3.0 - added
### `width` {#height}
**Description:** Width of preview, in pixels.\
**Type:** Integer\
**Version history:**\
1.3.0 - added
### `height` {#height}
**Description:** Height of preview, in pixels.\
**Type:** Integer\
**Version history:**\
1.3.0 - added
### `image` {#image}
**Description:** Preview thumbnail.\
**Type:** {{}} String (URL)\
**Version history:**\
1.0.0 - added
### `embed_url` {#embed_url}
**Description:** Used for photo embeds, instead of custom `html`.\
**Type:** String (URL)\
**Version history:**\
2.1.0 - added
### `blurhash` {#blurhash}
**Description:** A hash computed by [the BlurHash algorithm](https://github.com/woltapp/blurhash), for generating colorful preview thumbnails when media has not been downloaded yet.\
**Type:** {{}} String\
**Version history:**\
3.2.0 - added
## See also
{{< page-relref ref="entities/Status#card" caption="Status (`card` attribute)" >}}
{{< caption-link url="https://github.com/mastodon/mastodon/blob/main/app/serializers/rest/preview_card_serializer.rb" caption="app/serializers/rest/preview_card_serializer.rb" >}}