diff --git a/web/public/robots.txt b/web/public/robots.txt
new file mode 100644
index 0000000..14267e9
--- /dev/null
+++ b/web/public/robots.txt
@@ -0,0 +1,2 @@
+User-agent: *
+Allow: /
\ No newline at end of file
diff --git a/web/src/App.js b/web/src/App.js
index c03dd05..a2e603f 100644
--- a/web/src/App.js
+++ b/web/src/App.js
@@ -80,6 +80,7 @@ export default function App() {
             value={inputValue}
             ref={inputRef}
             placeholder={t('placeholder')}
+            aria-label="search query"
           />
           {queryGiven && !suggested ? (
             <Suggestion onSubmit={onSuggestionCompleted} query={query} />
diff --git a/web/src/components/Footer.js b/web/src/components/Footer.js
index c2218aa..f4e991f 100644
--- a/web/src/components/Footer.js
+++ b/web/src/components/Footer.js
@@ -22,10 +22,13 @@ export default function Footer() {
           </ExternalLink>
         </p>
         <Links>
-          <ExternalLink href="https://github.com/uetchy/namae">
+          <ExternalLink
+            href="https://github.com/uetchy/namae"
+            aria-label="Go to GitHub repository">
             <FaGithubAlt />
           </ExternalLink>
           <ExternalLink
+            aria-label="Tweet this page"
             href={`https://twitter.com/intent/tweet?text=${encodeURIComponent(
               `namae — ${t('title')}`
             )}&url=${encodeURIComponent('https://namae.dev')}`}>