diff --git a/readme.md b/readme.md
index 608b34b..6898801 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,7 @@
-# remark-validate-links [![Build Status](https://img.shields.io/travis/wooorm/remark-validate-links.svg)](https://travis-ci.org/wooorm/remark-validate-links) [![Coverage Status](https://img.shields.io/codecov/c/github/wooorm/remark-validate-links.svg)](https://codecov.io/github/wooorm/remark-validate-links)
+# remark-validate-links [![Build Status][travis-badge]][travis] [![Coverage Status][codecov-badge]][codecov]
 
-[**remark**](https://github.com/wooorm/remark) plug-in to validate if links to
-headings and files in markdown point to existing things.
+[**remark**][remark] plug-in to validate if links to headings and files
+in markdown point to existing things.
 
 For example, this document does not have a heading named `Hello`. So if I
 link to that (`[welcome](#hello)`), this plug-in will warn about it.
@@ -25,7 +25,7 @@ is fine.
 
 ## Installation
 
-[npm](https://docs.npmjs.com/cli/install):
+[npm][npm-install]:
 
 ```bash
 npm install remark-validate-links
@@ -33,9 +33,9 @@ npm install remark-validate-links
 
 ## Command line
 
-![Example of how remark-validate-links looks on screen](https://cdn.rawgit.com/wooorm/remark-validate-links/master/screenshot.png)
+![Example of how remark-validate-links looks on screen][screenshot]
 
-Use **remark-validate-links** together with [**remark**](https://github.com/wooorm/remark):
+Use **remark-validate-links** together with [**remark**][remark]:
 
 ```bash
 npm install --global remark remark-validate-links
@@ -76,9 +76,9 @@ This plug-in is **not** available on the API of remark.
 ## Configuration
 
 You can pass a `repository`, containing anything `package.json`s
-[`repository`](https://docs.npmjs.com/files/package.json#repository) can
-handle. If this is omitted, **remark-validate-links** will try
-the `package.json` in your current working directory.
+[`repository`][package-repository] can handle. If this is omitted,
+**remark-validate-links** will try the `package.json` in your
+current working directory.
 
 ```bash
 remark --use 'validate-links=repository:"foo/bar"' example.md
@@ -88,15 +88,12 @@ When a repository is given or detected, links to GitHub are normalized
 to the file-system. E.g., `https://github.com/foo/bar/blob/master/example.md`
 becomes `example.md`.
 
-You can define this repository in `.remarkrc` or `package.json` [files](https://github.com/wooorm/remark/blob/master/doc/remarkrc.5.md)
-too. An example `.remarkrc` file could look as follows:
+You can define this repository in `.remarkrc` or `package.json`
+[files][remarkrc] too. An example `.remarkrc` file could look as follows:
 
 ```json
 {
   "plugins": {
-    "slug": {
-      "library": "github"
-    },
     "validate-links": {
       "repository": "foo/bar"
     }
@@ -120,13 +117,37 @@ several properties on nodes:
 
 ## Related
 
-*   [`remark-lint`](https://github.com/wooorm/remark-lint)
+*   [`wooorm/remark-lint`][remark-lint]
     — Markdown code style linter.
 
 ## License
 
-[MIT](LICENSE) © [Titus Wormer](http://wooorm.com)
+[MIT][license] © [Titus Wormer][author]
 
 <!-- Definitions -->
 
+[travis-badge]: https://img.shields.io/travis/wooorm/remark-validate-links.svg
+
+[travis]: https://travis-ci.org/wooorm/remark-validate-links
+
+[codecov-badge]: https://img.shields.io/codecov/c/github/wooorm/remark-validate-links.svg
+
+[codecov]: https://codecov.io/github/wooorm/remark-validate-links
+
+[npm-install]: https://docs.npmjs.com/cli/install
+
+[license]: LICENSE
+
+[author]: http://wooorm.com
+
+[remark]: https://github.com/wooorm/remark
+
+[remark-lint]: https://github.com/wooorm/remark-lint
+
 [remark-html]: https://github.com/wooorm/remark-html
+
+[screenshot]: https://cdn.rawgit.com/wooorm/remark-validate-links/master/screenshot.png
+
+[package-repository]: https://docs.npmjs.com/files/package.json#repository
+
+[remarkrc]: https://github.com/wooorm/remark/blob/master/doc/remarkrc.5.md