diff --git a/components/avatars/Centered.vue b/components/avatars/Centered.vue
index 18c78bb..cc6057b 100644
--- a/components/avatars/Centered.vue
+++ b/components/avatars/Centered.vue
@@ -1,8 +1,7 @@
 <template>
     <div v-bind="$props" class="bg-dark-700 overflow-hidden flex items-center justify-center">
         <Skeleton :enabled="!src" class="!h-full !w-full">
-            <img class="cursor-pointer bg-dark-700 ring-1 w-full h-full object-cover" :src="src" :alt="alt"
-                :title="alt" />
+            <img class="cursor-pointer bg-dark-700 ring-1 w-full h-full object-cover" :src="src" :alt="alt" />
         </Skeleton>
     </div>
 </template>
diff --git a/components/composer/composer.vue b/components/composer/composer.vue
index 8afb2d9..7bbc9ce 100644
--- a/components/composer/composer.vue
+++ b/components/composer/composer.vue
@@ -1,5 +1,5 @@
 <template>
-    <div v-if="respondingTo" class="mb-4">
+    <div v-if="respondingTo" class="mb-4" role="region" aria-label="Responding to">
         <OverlayScrollbarsComponent :defer="true" class="max-h-72 overflow-y-auto">
             <LazySocialElementsNotesNote :note="respondingTo" :small="true" :disabled="true"
                 class="!rounded-none !bg-pink-500/10" />
@@ -7,11 +7,12 @@
     </div>
     <div class="px-6 pb-4 pt-5">
         <div class="pb-2 relative">
-            <textarea :disabled="submitting" ref="textarea" v-model="content" :placeholder="chosenSplash"
+            <textarea :disabled="loading" ref="textarea" v-model="content" :placeholder="chosenSplash"
                 @paste="handlePaste"
-                class="resize-none min-h-48 prose prose-invert max-h-[70dvh] w-full p-0 focus:!ring-0 !ring-none !border-none !outline-none placeholder:text-zinc-500 bg-transparent appearance-none focus:!border-none focus:!outline-none disabled:cursor-not-allowed"></textarea>
-            <div
-                :class="['absolute bottom-0 right-0 p-2 text-gray-400 font-semibold text-xs', remainingCharacters < 0 && 'text-red-500']">
+                class="resize-none min-h-48 prose prose-invert max-h-[70dvh] w-full p-0 focus:!ring-0 !ring-none !border-none !outline-none placeholder:text-zinc-500 bg-transparent appearance-none focus:!border-none focus:!outline-none disabled:cursor-not-allowed"
+                aria-label="Compose your message"></textarea>
+            <div :class="['absolute bottom-0 right-0 p-2 text-gray-400 font-semibold text-xs', remainingCharacters < 0 && 'text-red-500']"
+                aria-live="polite">
                 {{ remainingCharacters }}
             </div>
             <ComposerEmojiSuggestbox :currently-typing-emoji="currentlyBeingTypedEmoji"
@@ -20,7 +21,8 @@
         <!-- Content warning textbox -->
         <div v-if="cw" class="mb-4">
             <input type="text" v-model="cwContent" placeholder="Add a content warning"
-                class="w-full p-2 mt-1 text-sm prose prose-invert bg-dark-900 rounded focus:!ring-0 !ring-none !border-none !outline-none placeholder:text-zinc-500 appearance-none focus:!border-none focus:!outline-none" />
+                class="w-full p-2 mt-1 text-sm prose prose-invert bg-dark-900 rounded focus:!ring-0 !ring-none !border-none !outline-none placeholder:text-zinc-500 appearance-none focus:!border-none focus:!outline-none"
+                aria-label="Content warning" />
         </div>
         <ComposerFileUploader v-model:files="files" ref="uploader" />
         <div class="flex flex-row gap-1 border-white/20">
@@ -43,7 +45,7 @@
             <ComposerButton title="Add content warning" @click="cw = !cw" :toggled="cw">
                 <iconify-icon width="1.25rem" height="1.25rem" icon="tabler:rating-18-plus" aria-hidden="true" />
             </ComposerButton>
-            <ButtonsPrimary :loading="submitting" @click="send" class="ml-auto rounded-full">
+            <ButtonsPrimary :loading="loading" @click="send" class="ml-auto rounded-full">
                 <span>Send!</span>
             </ButtonsPrimary>
         </div>
@@ -99,6 +101,7 @@ const files = ref<
         file: File;
         progress: number;
         api_id?: string;
+        alt_text?: string;
     }[]
 >([]);
 
@@ -126,6 +129,21 @@ watch(Control_Alt, () => {
     chosenSplash.value = splashes[Math.floor(Math.random() * splashes.length)];
 });
 
+watch(
+    files,
+    (newFiles) => {
+        // If a file is uploading, set loading to true
+        if (newFiles.some((file) => file.progress < 1)) {
+            loading.value = true;
+        } else {
+            loading.value = false;
+        }
+    },
+    {
+        deep: true,
+    },
+);
+
 onMounted(() => {
     useListen("composer:reply", (note: Status) => {
         respondingTo.value = note;
@@ -154,12 +172,12 @@ const props = defineProps<{
     instance: Instance;
 }>();
 
-const submitting = ref(false);
+const loading = ref(false);
 const tokenData = useTokenData();
 const client = useMegalodon(tokenData);
 
 const send = async () => {
-    submitting.value = true;
+    loading.value = true;
 
     fetch(new URL("/api/v1/statuses", client.value?.baseUrl ?? "").toString(), {
         method: "POST",
@@ -191,7 +209,7 @@ const send = async () => {
             }
 
             content.value = "";
-            submitting.value = false;
+            loading.value = false;
             useEvent("composer:send", await res.json());
         })
         .finally(() => {
diff --git a/components/composer/file-uploader.vue b/components/composer/file-uploader.vue
index 8b1901a..e510dec 100644
--- a/components/composer/file-uploader.vue
+++ b/components/composer/file-uploader.vue
@@ -15,23 +15,47 @@
                 <template v-else>
                     <iconify-icon :icon="getIcon(data.file.type)" width="none" class="size-6" />
                 </template>
-                <div class="absolute bottom-1 right-1 p-1 bg-dark-800/70 text-white text-xs rounded cursor-default flex flex-row items-center gap-x-1"
+                <!-- Shadow on media to better see buttons -->
+                <div class="absolute inset-0 bg-black/70"></div>
+                <div class="absolute bottom-1 right-1 p-1 bg-dark-800 text-white text-xs rounded cursor-default flex flex-row items-center gap-x-1"
                     aria-label="File size">
                     {{ formatBytes(data.file.size) }}
                     <!-- Loader spinner -->
                     <iconify-icon v-if="data.progress < 1.0" icon="tabler:loader-2" width="none"
                         class="size-4 animate-spin text-pink-500" />
                 </div>
-                <button class="absolute top-1 right-1 p-1 bg-dark-800/50 text-white text-xs rounded size-6"
-                    role="button" tabindex="0" @pointerup="removeFile(data.id)" @keydown.enter="removeFile(data.id)">
+                <button class="absolute top-1 right-1 p-1 bg-dark-800 text-white text-xs rounded size-6" role="button"
+                    tabindex="0" @pointerup="removeFile(data.id)" @keydown.enter="removeFile(data.id)">
                     <iconify-icon icon="tabler:x" width="none" class="size-4" />
                 </button>
+                <!-- Alt text editor -->
+                <Popover.Root :positioning="{
+            strategy: 'fixed',
+        }" v-if="data.api_id" @update:open="o => !o && updateAltText(data.id, data.alt_text)">
+                    <Popover.Trigger aria-hidden="true"
+                        class="absolute top-1 left-1 p-1 bg-dark-800 ring-1 ring-white/5 text-white text-xs rounded size-6">
+                        <iconify-icon icon="tabler:alt" width="none" class="size-4" />
+                    </Popover.Trigger>
+                    <Popover.Positioner class="!z-[100]">
+                        <Popover.Content
+                            class="p-1 bg-dark-400 rounded text-sm ring-1 ring-white/10 shadow-lg text-gray-300 !min-w-72">
+                            <textarea :disabled="data.progress < 1.0" @keydown.enter.stop v-model="data.alt_text"
+                                placeholder="Add alt text"
+                                class="w-full p-2 text-sm prose prose-invert bg-dark-900 rounded focus:!ring-0 !ring-none !border-none !outline-none placeholder:text-zinc-500 appearance-none focus:!border-none focus:!outline-none" />
+                            <ButtonsSecondary @click="updateAltText(data.id, data.alt_text)" class="w-full"
+                                :loading="data.progress < 1.0">
+                                <span>Edit</span>
+                            </ButtonsSecondary>
+                        </Popover.Content>
+                    </Popover.Positioner>
+                </Popover.Root>
             </div>
         </div>
     </div>
 </template>
 
 <script lang="ts" setup>
+import { Popover } from "@ark-ui/vue";
 import { nanoid } from "nanoid";
 
 const files = defineModel<
@@ -43,6 +67,7 @@ const files = defineModel<
         // 1.0 -> Uploaded
         progress: number;
         api_id?: string;
+        alt_text?: string;
     }[]
 >("files", {
     required: true,
@@ -88,6 +113,30 @@ watch(
     },
 );
 
+const updateAltText = (id: string, altText?: string) => {
+    // Set loading
+    files.value = files.value.map((data) => {
+        if (data.id === id) {
+            return { ...data, progress: 0.5 };
+        }
+        return data;
+    });
+
+    client.value
+        ?.updateMedia(
+            files.value.find((data) => data.id === id)?.api_id as string,
+            { description: altText },
+        )
+        .then(() => {
+            files.value = files.value.map((data) => {
+                if (data.id === id) {
+                    return { ...data, progress: 1.0 };
+                }
+                return data;
+            });
+        });
+};
+
 const getIcon = (mimeType: string) => {
     if (mimeType.startsWith("image/")) return "tabler:photo";
     if (mimeType.startsWith("video/")) return "tabler:video";
diff --git a/components/social-elements/notes/attachment.vue b/components/social-elements/notes/attachment.vue
index 1a25494..35fe9a5 100644
--- a/components/social-elements/notes/attachment.vue
+++ b/components/social-elements/notes/attachment.vue
@@ -12,14 +12,12 @@
         <Popover.Root :positioning="{
             strategy: 'fixed',
         }" v-if="attachment.description">
-            <Popover.Trigger
+            <Popover.Trigger aria-hidden="true"
                 class="absolute top-2 right-2 p-1 bg-dark-800 ring-1 ring-white/5 text-white text-xs rounded size-8">
                 <iconify-icon icon="tabler:alt" width="none" class="size-6" />
             </Popover.Trigger>
             <Popover.Positioner>
-                <Popover.Content class="p-4 bg-dark-400 rounded text-sm ring-1 ring-white/10 shadow-lg text-gray-300">
-                    <Popover.Title class="font-semibold mb-2">
-                        Description</Popover.Title>
+                <Popover.Content class="p-4 bg-dark-400 rounded text-sm ring-1 ring-dark-100 shadow-lg text-gray-300">
                     <Popover.Description>{{ attachment.description }}</Popover.Description>
                 </Popover.Content>
             </Popover.Positioner>