quartz/docs/plugins/Description.md
Emile Bangma bcb5b2df09
feat(frontmatter): configure max length for description (#946)
* Sentence length check

* Replace external links with domain name.

* Updated documentation.

* Updated replacement values.

* Updated Regex based on feedback.

* Check description for undefined

* Updated external url transform regex.

* Updated formatting
2024-03-04 09:52:28 -08:00

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---
title: Description
tags:
- plugin/transformer
---
This plugin generates descriptions that are used as metadata for the HTML `head`, the [[RSS Feed]] and in [[folder and tag listings]] if there is no main body content, the description is used as the text between the title and the listing.
If the frontmatter contains a `description` property, it is used (see [[authoring content#Syntax]]). Otherwise, the plugin will do its best to use the first few sentences of the content to reach the target description length.
> [!note]
> For information on how to add, remove or configure plugins, see the [[Configuration#Plugins|Configuration]] page.
This plugin accepts the following configuration options:
- `descriptionLength`: the maximum length of the generated description. Default is 150 characters. The cut off happens after the first _sentence_ that ends after the given length.
- `replaceExternalLinks`: If `true` (default), replace external links with their domain and path in the description (e.g. `https://domain.tld/some_page/another_page?query=hello&target=world` is replaced with `domain.tld/some_page/another_page`).
## API
- Category: Transformer
- Function name: `Plugin.Description()`.
- Source: [`quartz/plugins/transformers/description.ts`](https://github.com/jackyzha0/quartz/blob/v4/quartz/plugins/transformers/description.ts).