diff --git a/packages/frontend/src/components/MkCode.vue b/packages/frontend/src/components/MkCode.vue
index 7346d5782..e0973b676 100644
--- a/packages/frontend/src/components/MkCode.vue
+++ b/packages/frontend/src/components/MkCode.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<pre v-else-if="show" :class="$style.codeBlockFallbackRoot"><code :class="$style.codeBlockFallbackCode">{{ code }}</code></pre>
 	<button v-else :class="$style.codePlaceholderRoot" @click="show = true">
 		<div :class="$style.codePlaceholderContainer">
-			<div><i class="ti ti-code"></i> {{ i18n.ts.code }}</div>
+			<div><i class="ph-code ph-bold ph-lg"></i> {{ i18n.ts.code }}</div>
 			<div>{{ i18n.ts.clickToShow }}</div>
 		</div>
 	</button>
diff --git a/packages/frontend/src/components/MkCodeEditor.vue b/packages/frontend/src/components/MkCodeEditor.vue
index c1aaa7f1f..0ec69a69a 100644
--- a/packages/frontend/src/components/MkCodeEditor.vue
+++ b/packages/frontend/src/components/MkCodeEditor.vue
@@ -27,7 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</div>
 	<div :class="$style.caption"><slot name="caption"></slot></div>
-	<MkButton v-if="manualSave && changed" primary :class="$style.save" @click="updated"><i class="ti ti-device-floppy"></i> {{ i18n.ts.save }}</MkButton>
+	<MkButton v-if="manualSave && changed" primary :class="$style.save" @click="updated"><i class="ph-floppy-disk ph-bold ph-lg"></i> {{ i18n.ts.save }}</MkButton>
 </div>
 </template>
 
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index c87ec22ef..741897b5f 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -110,8 +110,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</MkFolder>
 
 						<div>
-							<MkButton v-if="iAmModerator" inline danger style="margin-right: 8px;" @click="unsetUserAvatar"><i class="ti ti-user-circle"></i> {{ i18n.ts.unsetUserAvatar }}</MkButton>
-							<MkButton v-if="iAmModerator" inline danger @click="unsetUserBanner"><i class="ti ti-photo"></i> {{ i18n.ts.unsetUserBanner }}</MkButton>
+							<MkButton v-if="iAmModerator" inline danger style="margin-right: 8px;" @click="unsetUserAvatar"><i class="ph-user-circle ph-bold ph-lg"></i> {{ i18n.ts.unsetUserAvatar }}</MkButton>
+							<MkButton v-if="iAmModerator" inline danger @click="unsetUserBanner"><i class="ph-photo ph-bold ph-lg"></i> {{ i18n.ts.unsetUserBanner }}</MkButton>
 						</div>
 						<MkButton v-if="$i.isAdmin" inline danger @click="deleteAccount">{{ i18n.ts.deleteAccount }}</MkButton>
 					</div>
diff --git a/packages/frontend/src/pages/admin/security.vue b/packages/frontend/src/pages/admin/security.vue
index 524b9b9a7..8ed3e20af 100644
--- a/packages/frontend/src/pages/admin/security.vue
+++ b/packages/frontend/src/pages/admin/security.vue
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<template #label>Use Verifymail.io API</template>
 						</MkSwitch>
 						<MkInput v-model="verifymailAuthKey" @update:modelValue="save">
-							<template #prefix><i class="ti ti-key"></i></template>
+							<template #prefix><i class="ph-key ph-bold ph-lg"></i></template>
 							<template #label>Verifymail.io API Auth Key</template>
 						</MkInput>
 					</div>
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkTextarea v-model="bannedEmailDomains">
 							<template #label>Banned Email Domains List</template>
 						</MkTextarea>
-						<MkButton primary @click="save"><i class="ti ti-device-floppy"></i> {{ i18n.ts.save }}</MkButton>
+						<MkButton primary @click="save"><i class="ph-floppy-disk ph-bold ph-lg"></i> {{ i18n.ts.save }}</MkButton>
 					</div>
 				</MkFolder>
 
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
index fcd74002f..2bf261abd 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<div :class="$style.name"><MkCondensedLine :minScale="0.5">{{ decoration.name }}</MkCondensedLine></div>
 	<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="[{ url: decoration.url, angle, flipH, offsetX, offsetY }]" forceShowDecoration/>
-	<i v-if="decoration.roleIdsThatCanBeUsedThisDecoration.length > 0 && !$i.roles.some(r => decoration.roleIdsThatCanBeUsedThisDecoration.includes(r.id))" :class="$style.lock" class="ti ti-lock"></i>
+	<i v-if="decoration.roleIdsThatCanBeUsedThisDecoration.length > 0 && !$i.roles.some(r => decoration.roleIdsThatCanBeUsedThisDecoration.includes(r.id))" :class="$style.lock" class="ph-lock ph-bold ph-lg"></i>
 </div>
 </template>
 
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
index 329ab4d47..a46a92d1c 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
@@ -36,9 +36,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</MkSpacer>
 
 		<div :class="$style.footer" class="_buttonsCenter">
-			<MkButton v-if="usingIndex != null" primary rounded @click="update"><i class="ti ti-check"></i> {{ i18n.ts.update }}</MkButton>
-			<MkButton v-if="usingIndex != null" rounded @click="detach"><i class="ti ti-x"></i> {{ i18n.ts.detach }}</MkButton>
-			<MkButton v-else :disabled="exceeded" primary rounded @click="attach"><i class="ti ti-check"></i> {{ i18n.ts.attach }}</MkButton>
+			<MkButton v-if="usingIndex != null" primary rounded @click="update"><i class="ph-check ph-bold ph-lg"></i> {{ i18n.ts.update }}</MkButton>
+			<MkButton v-if="usingIndex != null" rounded @click="detach"><i class="ph-x ph-bold ph-lg"></i> {{ i18n.ts.detach }}</MkButton>
+			<MkButton v-else :disabled="exceeded" primary rounded @click="attach"><i class="ph-check ph-bold ph-lg"></i> {{ i18n.ts.attach }}</MkButton>
 		</div>
 	</div>
 </MkModalWindow>
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.vue
index 6551fc917..976f6aa68 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.vue
@@ -127,7 +127,7 @@ const headerTabs = computed(() => []);
 
 definePageMetadata({
 	title: i18n.ts.avatarDecorations,
-	icon: 'ti ti-sparkles',
+	icon: 'ph-sparkle ph-bold ph-lg',
 });
 </script>
 
diff --git a/packages/frontend/src/pages/settings/emoji-picker.vue b/packages/frontend/src/pages/settings/emoji-picker.vue
index e0a622dc6..40bb823ac 100644
--- a/packages/frontend/src/pages/settings/emoji-picker.vue
+++ b/packages/frontend/src/pages/settings/emoji-picker.vue
@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <div class="_gaps_m">
 	<MkFolder :defaultOpen="true">
-		<template #icon><i class="ti ti-pin"></i></template>
+		<template #icon><i class="ph-pin ph-bold ph-lg"></i></template>
 		<template #label>{{ i18n.ts.pinned }} ({{ i18n.ts.reaction }})</template>
 		<template #caption>{{ i18n.ts.pinnedEmojisForReactionSettingDescription }}</template>
 
@@ -29,7 +29,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</template>
 						<template #footer>
 							<button class="_button" :class="$style.emojisAdd" @click="chooseReaction">
-								<i class="ti ti-plus"></i>
+								<i class="ph-plus ph-bold ph-lg"></i>
 							</button>
 						</template>
 					</Sortable>
@@ -38,15 +38,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 
 			<div class="_buttons">
-				<MkButton inline @click="previewReaction"><i class="ti ti-eye"></i> {{ i18n.ts.preview }}</MkButton>
-				<MkButton inline danger @click="setDefaultReaction"><i class="ti ti-reload"></i> {{ i18n.ts.default }}</MkButton>
-				<MkButton inline danger @click="overwriteFromPinnedEmojis"><i class="ti ti-copy"></i> {{ i18n.ts.overwriteFromPinnedEmojis }}</MkButton>
+				<MkButton inline @click="previewReaction"><i class="ph-eye ph-bold ph-lg"></i> {{ i18n.ts.preview }}</MkButton>
+				<MkButton inline danger @click="setDefaultReaction"><i class="ph-arrow-counter-clockwise ph-bold ph-lg"></i> {{ i18n.ts.default }}</MkButton>
+				<MkButton inline danger @click="overwriteFromPinnedEmojis"><i class="ph-copy ph-bold ph-lg"></i> {{ i18n.ts.overwriteFromPinnedEmojis }}</MkButton>
 			</div>
 		</div>
 	</MkFolder>
 
 	<MkFolder>
-		<template #icon><i class="ti ti-pin"></i></template>
+		<template #icon><i class="ph-pin ph-bold ph-lg"></i></template>
 		<template #label>{{ i18n.ts.pinned }} ({{ i18n.ts.general }})</template>
 		<template #caption>{{ i18n.ts.pinnedEmojisSettingDescription }}</template>
 
@@ -69,7 +69,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</template>
 						<template #footer>
 							<button class="_button" :class="$style.emojisAdd" @click="chooseEmoji">
-								<i class="ti ti-plus"></i>
+								<i class="ph-plus ph-bold ph-lg"></i>
 							</button>
 						</template>
 					</Sortable>
@@ -78,9 +78,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 
 			<div class="_buttons">
-				<MkButton inline @click="previewEmoji"><i class="ti ti-eye"></i> {{ i18n.ts.preview }}</MkButton>
-				<MkButton inline danger @click="setDefaultEmoji"><i class="ti ti-reload"></i> {{ i18n.ts.default }}</MkButton>
-				<MkButton inline danger @click="overwriteFromPinnedEmojisForReaction"><i class="ti ti-copy"></i> {{ i18n.ts.overwriteFromPinnedEmojisForReaction }}</MkButton>
+				<MkButton inline @click="previewEmoji"><i class="ph-eye ph-bold ph-lg"></i> {{ i18n.ts.preview }}</MkButton>
+				<MkButton inline danger @click="setDefaultEmoji"><i class="ph-arrow-counter-clockwise ph-bold ph-lg"></i> {{ i18n.ts.default }}</MkButton>
+				<MkButton inline danger @click="overwriteFromPinnedEmojisForReaction"><i class="ph-copy ph-bold ph-lg"></i> {{ i18n.ts.overwriteFromPinnedEmojisForReaction }}</MkButton>
 			</div>
 		</div>
 	</MkFolder>
@@ -278,7 +278,7 @@ watch(pinnedEmojis, () => {
 
 definePageMetadata({
 	title: i18n.ts.emojiPicker,
-	icon: 'ti ti-mood-happy',
+	icon: 'ph-smiley ph-bold ph-lg',
 });
 </script>
 
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index f9adee94d..f5cefeddb 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -96,7 +96,7 @@ async function chooseList(ev: MouseEvent): Promise<void> {
 		(lists.length === 0 ? undefined : { type: 'divider' }),
 		{
 			type: 'link' as const,
-			icon: 'ti ti-plus',
+			icon: 'ph-plus ph-bold ph-lg',
 			text: i18n.ts.createNew,
 			to: '/my/lists',
 		},
@@ -116,7 +116,7 @@ async function chooseAntenna(ev: MouseEvent): Promise<void> {
 		(antennas.length === 0 ? undefined : { type: 'divider' }),
 		{
 			type: 'link' as const,
-			icon: 'ti ti-plus',
+			icon: 'ph-plus ph-bold ph-lg',
 			text: i18n.ts.createNew,
 			to: '/my/antennas',
 		},
@@ -143,7 +143,7 @@ async function chooseChannel(ev: MouseEvent): Promise<void> {
 		(channels.length === 0 ? undefined : { type: 'divider' }),
 		{
 			type: 'link' as const,
-			icon: 'ti ti-plus',
+			icon: 'ph-plus ph-bold ph-lg',
 			text: i18n.ts.createNew,
 			to: '/channels',
 		},
diff --git a/packages/frontend/src/scripts/mfm-function-picker.ts b/packages/frontend/src/scripts/mfm-function-picker.ts
index 465926fe0..6e25cc856 100644
--- a/packages/frontend/src/scripts/mfm-function-picker.ts
+++ b/packages/frontend/src/scripts/mfm-function-picker.ts
@@ -25,7 +25,7 @@ function getFunctionList(textArea: HTMLInputElement | HTMLTextAreaElement, textR
 	MFM_TAGS.forEach(tag => {
 		ret.push({
 			text: tag,
-			icon: 'ti ti-icons',
+			icon: 'ph-brackets-curly ph-bold ph-lg',
 			action: () => add(textArea, textRef, tag),
 		});
 	});
diff --git a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
index 7c4455516..0a83eba9c 100644
--- a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
+++ b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <MkContainer :showHeader="widgetProps.showHeader" class="mkw-bdayfollowings">
-	<template #icon><i class="ti ti-cake"></i></template>
+	<template #icon><i class="ph-cake ph-bold ph-lg"></i></template>
 	<template #header>{{ i18n.ts._widgets.birthdayFollowings }}</template>
 
 	<div :class="$style.bdayFRoot">