diff --git a/WFA-JS b/WFA-JS
index 7bbd8f6..57296ed 160000
--- a/WFA-JS
+++ b/WFA-JS
@@ -1 +1 @@
-Subproject commit 7bbd8f6eb31959f819d3affc7e14edb8e35a54af
+Subproject commit 57296ed3033bfb5a3333a51dcac8c877e425ecaa
diff --git a/app/app.go b/app/app.go
index 037293f..62a5897 100644
--- a/app/app.go
+++ b/app/app.go
@@ -53,24 +53,28 @@ func ServeStatic(router *gin.Engine, m *minify.M) {
 	router.GET("/css/*css", func(c *gin.Context) {
 		path, _ := c.Params.Get("css")
 		data := css[fmt.Sprintf("css%s", path)]
+		c.Header("Content-Encoding", data.MimeType.Encoding)
 		c.Data(200, data.MimeType.Type, []byte(data.Data))
 	})
 	images := common.MinifyStatic(m, web.Images_fs)
 	router.GET("/images/*image", func(c *gin.Context) {
 		path, _ := c.Params.Get("image")
 		data := images[fmt.Sprintf("images%s", path)]
+		c.Header("Content-Encoding", data.MimeType.Encoding)
 		c.Data(200, data.MimeType.Type, []byte(data.Data))
 	})
 	modules := common.MinifyStatic(m, web.Modules_fs)
 	router.GET("/modules/*module", func(c *gin.Context) {
 		path, _ := c.Params.Get("module")
 		data := modules[fmt.Sprintf("modules%s", path)]
+		c.Header("Content-Encoding", data.MimeType.Encoding)
 		c.Data(200, data.MimeType.Type, []byte(data.Data))
 	})
 	scripts := common.MinifyStatic(m, web.Scripts_fs)
 	router.GET("/scripts/*script", func(c *gin.Context) {
 		path, _ := c.Params.Get("script")
 		data := scripts[fmt.Sprintf("scripts%s", path)]
+		c.Header("Content-Encoding", data.MimeType.Encoding)
 		c.Data(200, data.MimeType.Type, []byte(data.Data))
 	})
 }
diff --git a/app/common/meta_debug.go b/app/common/meta_debug.go
index e31203b..1af17cf 100644
--- a/app/common/meta_debug.go
+++ b/app/common/meta_debug.go
@@ -11,6 +11,7 @@ import (
 // defines mime type and associated minifier
 type MimeType struct {
 	Type     string
+	Encoding string
 	Minifier func(m *minify.M, w io.Writer, r io.Reader, params map[string]string) error
 }
 
@@ -44,6 +45,11 @@ var MimeTypes = map[string]MimeType{
 		Type:     "application/wasm",
 		Minifier: nil,
 	},
+	"gz": {
+		Type:     "application/wasm",
+		Encoding: "gzip",
+		Minifier: nil,
+	},
 	"*": {
 		Type:     "text/plain",
 		Minifier: nil,
diff --git a/app/common/meta_release.go b/app/common/meta_release.go
index fd736bd..8d23226 100644
--- a/app/common/meta_release.go
+++ b/app/common/meta_release.go
@@ -15,6 +15,7 @@ import (
 // defines mime type and associated minifier
 type MimeType struct {
 	Type     string
+	Encoding string
 	Minifier func(m *minify.M, w io.Writer, r io.Reader, params map[string]string) error
 }
 
@@ -48,6 +49,11 @@ var MimeTypes = map[string]MimeType{
 		Type:     "application/wasm",
 		Minifier: nil,
 	},
+	"gz": {
+		Type:     "application/wasm",
+		Encoding: "gzip",
+		Minifier: nil,
+	},
 	"*": {
 		Type:     "text/plain",
 		Minifier: nil,
diff --git a/web/modules/wfa.wasm b/web/modules/wfa.wasm
deleted file mode 100644
index c49810b..0000000
Binary files a/web/modules/wfa.wasm and /dev/null differ
diff --git a/web/modules/wfa.wasm.gz b/web/modules/wfa.wasm.gz
new file mode 100755
index 0000000..8606f42
Binary files /dev/null and b/web/modules/wfa.wasm.gz differ
diff --git a/web/scripts/index.js b/web/scripts/index.js
index a989c11..58a4cd5 100644
--- a/web/scripts/index.js
+++ b/web/scripts/index.js
@@ -10,7 +10,7 @@ var wfa;
 async function init () {
 	setAppearance();
 
-	wfa = await wfaInit("modules/wfa.wasm");
+	wfa = await wfaInit("modules/wfa.wasm.gz");
 	initInstances();
 
 	document.querySelector("#instance-add").addEventListener("click", handleInstanceAddButton);