diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/content/ThumbnailExtractor.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/content/ThumbnailExtractor.kt
index fde3dd906c..82cd682eae 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/content/ThumbnailExtractor.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/content/ThumbnailExtractor.kt
@@ -52,7 +52,7 @@ internal class ThumbnailExtractor @Inject constructor(
             mediaMetadataRetriever.setDataSource(context, attachment.queryUri)
             mediaMetadataRetriever.frameAtTime?.let { thumbnail ->
                 val outputStream = ByteArrayOutputStream()
-                thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
+                thumbnail.compress(Bitmap.CompressFormat.JPEG, 80, outputStream)
                 val thumbnailWidth = thumbnail.width
                 val thumbnailHeight = thumbnail.height
                 val thumbnailSize = outputStream.size()
diff --git a/newsfragment/3396.feature b/newsfragment/3396.feature
new file mode 100644
index 0000000000..29ae6422bf
--- /dev/null
+++ b/newsfragment/3396.feature
@@ -0,0 +1 @@
+Compress thumbnail: change Jpeg quality from 100 to 80
\ No newline at end of file