Add more badges

readme.md

@@ -1,4 +1,12 @@
-# mdast-util-assert [![Build][build-badge]][build] [![Coverage][coverage-badge]][coverage] [![Downloads][downloads-badge]][downloads] [![Chat][chat-badge]][chat]
+# mdast-util-assert
+
+[![Build][build-badge]][build]
+[![Coverage][coverage-badge]][coverage]
+[![Downloads][downloads-badge]][downloads]
+[![Size][size-badge]][size]
+[![Sponsors][sponsors-badge]][collective]
+[![Backers][backers-badge]][collective]
+[![Chat][chat-badge]][chat]
 
 Assert [mdast][] nodes.
 
@@ -63,9 +71,19 @@ repository, organisation, or community you agree to abide by its terms.
 
 [downloads]: https://www.npmjs.com/package/mdast-util-assert
 
+[size-badge]: https://img.shields.io/bundlephobia/minzip/mdast-util-assert.svg
+
+[size]: https://bundlephobia.com/result?p=mdast-util-assert
+
+[sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg
+
+[backers-badge]: https://opencollective.com/unified/backers/badge.svg
+
+[collective]: https://opencollective.com/unified
+
 [chat-badge]: https://img.shields.io/badge/join%20the%20community-on%20spectrum-7b16ff.svg
 
-[chat]: https://spectrum.chat/unified/remark
+[chat]: https://spectrum.chat/unified/syntax-tree
 
 [npm]: https://docs.npmjs.com/cli/install