diff --git a/CHANGELOG.md b/CHANGELOG.md
index 933e877..82946b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.8 - 2018-05-29
+
+* Use imgix auto=format for automatic webp conversion
+
 ## 0.2.7 - 2018-05-25
 
 * Update slugify() util function to support plural initialisms
diff --git a/src/util/getImageUrl.js b/src/util/getImageUrl.js
index 6f1a0cc..ed6f513 100644
--- a/src/util/getImageUrl.js
+++ b/src/util/getImageUrl.js
@@ -4,7 +4,7 @@ const resizedDir = '/images/uploads/resized/'
 const imgixUrl = null // imgix web folder domain e.g. https://example.imgix.net (no trailing slash)
 
 const getImgixUrl = ({ path, size }) =>
-  `${imgixUrl}${encodeURI(path)}?w=${size}&fit=max&auto=compress`
+  `${imgixUrl}${encodeURI(path)}?w=${size}&fit=max&auto=compress,format`
 
 const parseFilename = filename => {
   const parts = filename.match(/(.+)\.([\w]+)$/)