From 2d8fd9c7ec9235a06d34a5dbae106356e6af29f8 Mon Sep 17 00:00:00 2001
From: XYSK-lilong007 <267018309+XYSK-lilong007@users.noreply.github.com>
Date: Fri, 13 Mar 2026 02:26:19 +0800
Subject: [PATCH] fix(web): serve SVG with image/svg+xml (#1410)

---
 web/backend/embed.go      |  5 +++++
 web/backend/embed_test.go | 14 ++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/web/backend/embed.go b/web/backend/embed.go
index 556fb7384..c5d8c3e98 100644
--- a/web/backend/embed.go
+++ b/web/backend/embed.go
@@ -4,6 +4,7 @@ import (
 	"embed"
 	"io/fs"
 	"log"
+	"mime"
 	"net/http"
 	"path"
 	"strings"
@@ -14,6 +15,10 @@ var frontendFS embed.FS
 
 // registerEmbedRoutes sets up the HTTP handler to serve the embedded frontend files
 func registerEmbedRoutes(mux *http.ServeMux) {
+	if err := mime.AddExtensionType(".svg", "image/svg+xml"); err != nil {
+		log.Printf("Warning: failed to register SVG MIME type: %v", err)
+	}
+
 	// Attempt to get the subdirectory 'dist' where Vite usually builds
 	subFS, err := fs.Sub(frontendFS, "dist")
 	if err != nil {
diff --git a/web/backend/embed_test.go b/web/backend/embed_test.go
index c0365488e..7f87519f2 100644
--- a/web/backend/embed_test.go
+++ b/web/backend/embed_test.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"mime"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -31,3 +32,16 @@ func TestMissingAssetStays404(t *testing.T) {
 		t.Fatalf("status = %d, want %d", rr.Code, http.StatusNotFound)
 	}
 }
+
+func TestRegisterEmbedRoutesRegistersSVGContentType(t *testing.T) {
+	if err := mime.AddExtensionType(".svg", "image/svg"); err != nil {
+		t.Fatalf("AddExtensionType() seed error: %v", err)
+	}
+
+	mux := http.NewServeMux()
+	registerEmbedRoutes(mux)
+
+	if got := mime.TypeByExtension(".svg"); got != "image/svg+xml" {
+		t.Fatalf("TypeByExtension(.svg) = %q, want %q", got, "image/svg+xml")
+	}
+}