remove gif from image extensions

main.go

@@ -21,10 +21,8 @@ var imageExtensions = map[string]bool{
 	".png":  true,
 	".jpg":  true,
 	".jpeg": true,
-	".gif":  true,
 	".webp": true,
 	".bmp":  true,
-	".avif": true,
 }
 
 func isImageFile(path string) bool {
@@ -44,14 +42,14 @@ type CoverData struct {
 }
 
 var (
-	db            *sql.DB
-	tmpl          *template.Template
-	imaginaryURL  string
-	galleryPath   string
-	databasePath  string
-	listenAddr    string
-	listenPort    int
-	randomCovers  []CoverData
+	db           *sql.DB
+	tmpl         *template.Template
+	imaginaryURL string
+	galleryPath  string
+	databasePath string
+	listenAddr   string
+	listenPort   int
+	randomCovers []CoverData
 )
 
 func main() {
@@ -308,4 +306,3 @@ func handleIndex(w http.ResponseWriter, r *http.Request) {
 
 	tmpl.ExecuteTemplate(w, "index.html", data)
 }
-