diff --git a/scripts/tags/lib/image.js b/scripts/tags/lib/image.js
index a9db6ba..bc8ccbf 100644
--- a/scripts/tags/lib/image.js
+++ b/scripts/tags/lib/image.js
@@ -71,7 +71,11 @@ module.exports = ctx => function(args) {
     if (args.download == 'true') {
       href = args.src
     }
-    el += '<a class="image-download blur" style="opacity:0" target="_blank" download="' + args.alt + 'href="' + href + '"><svg class="icon" style="width: 1em; height: 1em;vertical-align: middle;fill: currentColor;overflow: hidden;" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3734"><path d="M561.00682908 685.55838913a111.03077546 111.03077546 0 0 1-106.8895062 0L256.23182837 487.72885783a55.96309219 55.96309219 0 0 1 79.13181253-79.18777574L450.70357448 523.88101491V181.55477937a55.96309219 55.96309219 0 0 1 111.92618438 0v344.06109173l117.07478902-117.07478901a55.96309219 55.96309219 0 0 1 79.13181252 79.18777574zM282.81429711 797.1487951h447.70473912a55.96309219 55.96309219 0 0 1 0 111.92618438H282.81429711a55.96309219 55.96309219 0 0 1 0-111.92618438z" p-id="3735"></path></svg></a>'
+    let download = ''
+    if (args.alt) {
+      download = ' download="' + args.alt + '"'
+    }
+    el += '<a class="image-download blur" style="opacity:0" target="_blank"' + download + ' href="' + href + '"><svg class="icon" style="width: 1em; height: 1em;vertical-align: middle;fill: currentColor;overflow: hidden;" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3734"><path d="M561.00682908 685.55838913a111.03077546 111.03077546 0 0 1-106.8895062 0L256.23182837 487.72885783a55.96309219 55.96309219 0 0 1 79.13181253-79.18777574L450.70357448 523.88101491V181.55477937a55.96309219 55.96309219 0 0 1 111.92618438 0v344.06109173l117.07478902-117.07478901a55.96309219 55.96309219 0 0 1 79.13181252 79.18777574zM282.81429711 797.1487951h447.70473912a55.96309219 55.96309219 0 0 1 0 111.92618438H282.81429711a55.96309219 55.96309219 0 0 1 0-111.92618438z" p-id="3735"></path></svg></a>'
   }
   el += '</div>'