From e4460d38150aef6496f856b3fadf59eb4bd48ff5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=BE=E6=96=87=E9=94=8B0668000834?=
 <zeng.wenfeng@xydigit.com>
Date: Thu, 12 Mar 2026 20:39:26 +0800
Subject: [PATCH] fix(web): correct SVG MIME type to image/svg+xml

Go's built-in mime.TypeByExtension returns 'image/svg' for .svg files,
but the correct MIME type per RFC 6838 is 'image/svg+xml'. This fix
registers the correct MIME type when setting up the static file server.

Fixes #1410
---
 web/backend/embed.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/web/backend/embed.go b/web/backend/embed.go
index 556fb7384..2b28f84b9 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 +15,13 @@ var frontendFS embed.FS
 
 // registerEmbedRoutes sets up the HTTP handler to serve the embedded frontend files
 func registerEmbedRoutes(mux *http.ServeMux) {
+	// Register correct MIME type for SVG files
+	// Go's built-in mime.TypeByExtension returns "image/svg" which is incorrect
+	// The correct MIME type per RFC 6838 is "image/svg+xml"
+	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 {