diff --git a/_posts/2024-10-31-media-type-cityjsonseq.md b/_posts/2024-10-31-media-type-cityjsonseq.md
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+---
+layout: post
+title: CityJSONSeq now has its own media type
+categories: news
+date: 2024-10-31 10:05
+---
+
+CityJSONSeq now has [its own media type](https://www.iana.org/assignments/media-types/application/city+json-seq), which is also known as a MIME type (Multipurpose Internet Mail Extensions).
+
+A media type indicates the content and format of a document, and is widely used on the web.
+
+CityJSONSeq has the following type: `application/city+json-seq`.
+
+CityJSON files also have their own media type: [`application/city+json`](https://www.iana.org/assignments/media-types/application/city+json).
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diff --git a/cityjsonseq/index.md b/cityjsonseq/index.md
index 50d3810dec..b7e00e4584 100644
--- a/cityjsonseq/index.md
+++ b/cityjsonseq/index.md
@@ -179,3 +179,8 @@ cat NYC.city.jsonl | cjseq filter --random 10 | python ./src/cjseqview.py`
 ```
 
 
+## Media type for CityJSONSeq
+
+It should be noticed that CityJSONSeq has its own media type: `application/city+json-seq`, [see the official page](https://www.iana.org/assignments/media-types/application/city+json-seq).
+
+There is also a different [media type for CityJSON](https://www.iana.org/assignments/media-types/application/city+json).