diff --git a/pages/components/Footer/BlueRibbon.js b/pages/components/Footer/BlueRibbon.js
index a94f0de..d88df24 100644
--- a/pages/components/Footer/BlueRibbon.js
+++ b/pages/components/Footer/BlueRibbon.js
@@ -10,6 +10,7 @@ const happybusy = (props) => {
           src="/images/brstrip.gif"
           width={150}
           height={41}
+          alt="EFF Blue Ribbon Campaign"
         />
       </a>
     </Link>
diff --git a/pages/components/Footer/HappyBusy.js b/pages/components/Footer/HappyBusy.js
index 7ca445d..bfd1701 100644
--- a/pages/components/Footer/HappyBusy.js
+++ b/pages/components/Footer/HappyBusy.js
@@ -10,6 +10,7 @@ const HappyBusy = (props) => {
             src="/images/busy_banner.png"
             width={200}
             height={42}
+            alt="時間のないサイト運営者リング"
           />
         </a>
     </Link>
diff --git a/pages/components/Minecraft.js b/pages/components/Minecraft.js
index 8f0e917..b616fa4 100644
--- a/pages/components/Minecraft.js
+++ b/pages/components/Minecraft.js
@@ -54,7 +54,7 @@ export default function Minecraft(props) {
                 url.push('https://mc-heads.net/avatar/' + data.players.list[i])
               }
               for (var i in url){
-                list.push(<Image src={url[i]} key={i} className="inline" height="50" width="50" />)
+                list.push(<Image src={url[i]} key={i} className="inline" height="50" width="50" alt={i}/>)
               }
               return <div>{list}</div>
             }
diff --git a/pages/minecraft.js b/pages/minecraft.js
index ff4280a..690af83 100644
--- a/pages/minecraft.js
+++ b/pages/minecraft.js
@@ -53,8 +53,7 @@ export default function About(props) {
                 <div className="w-full">
                 <Image
                     src         = "/images/dynmap.png"
-                    alt         = "Dynmap Header"
-                    unoptimized = {true}
+                    alt         = "Minecraft brief world map generated by Dynmap"
                     width       = {1354}
                     height      = {619}
                 />