diff --git a/packages/frontend/src/components/MkMediaAudio.vue b/packages/frontend/src/components/MkMediaAudio.vue
index fce00e7f52..41425facc3 100644
--- a/packages/frontend/src/components/MkMediaAudio.vue
+++ b/packages/frontend/src/components/MkMediaAudio.vue
@@ -143,13 +143,13 @@ function showMenu(ev: MouseEvent) {
 		{
 			type: 'switch',
 			text: i18n.ts._mediaControls.loop,
-			icon: 'ti ti-repeat',
+			icon: 'ph ph-repeat',
 			ref: loop,
 		},
 		{
 			type: 'radio',
 			text: i18n.ts._mediaControls.playbackRate,
-			icon: 'ti ti-clock-play',
+			icon: 'ph ph-gauge',
 			ref: speed,
 			options: {
 				'0.25x': 0.25,
@@ -188,7 +188,7 @@ function showMenu(ev: MouseEvent) {
 		}, {
 			type: 'link' as const,
 			text: i18n.ts._fileViewer.title,
-			icon: 'ti ti-info-circle',
+			icon: 'ph ph-info',
 			to: `/my/drive/file/${props.audio.id}`,
 		});
 	}
diff --git a/packages/frontend/src/components/MkMediaImage.vue b/packages/frontend/src/components/MkMediaImage.vue
index af9d7d824c..f1fb4f5b44 100644
--- a/packages/frontend/src/components/MkMediaImage.vue
+++ b/packages/frontend/src/components/MkMediaImage.vue
@@ -120,7 +120,7 @@ function showMenu(ev: MouseEvent) {
 	}, {
 		type: 'link' as const,
 		text: i18n.ts._fileViewer.title,
-		icon: 'ti ti-info-circle',
+		icon: 'ph ph-info',
 		to: `/my/drive/file/${props.image.id}`,
 	}] : [])], ev.currentTarget ?? ev.target);
 }
diff --git a/packages/frontend/src/components/MkMediaVideo.vue b/packages/frontend/src/components/MkMediaVideo.vue
index f35a404320..dbf76bc33d 100644
--- a/packages/frontend/src/components/MkMediaVideo.vue
+++ b/packages/frontend/src/components/MkMediaVideo.vue
@@ -39,10 +39,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 		>
 			<source :src="video.url">
 		</video>
-		<i class="ti ti-eye-off" :class="$style.hide" @click="hide = true"></i>
+		<i class="ph-eye-closed ph-bold ph-lg" :class="$style.hide" @click="hide = true"></i>
 		<div :class="$style.indicators">
 			<div v-if="video.comment" :class="$style.indicator">ALT</div>
-			<div v-if="video.isSensitive" :class="$style.indicator" style="color: var(--warn);" :title="i18n.ts.sensitive"><i class="ti ti-eye-exclamation"></i></div>
+			<div v-if="video.isSensitive" :class="$style.indicator" style="color: var(--warn);" :title="i18n.ts.sensitive"><i class="ph-warning ph-bold ph-lg"></i></div>
 		</div>
 	</div>
 
@@ -177,13 +177,13 @@ function showMenu(ev: MouseEvent) {
 		{
 			type: 'switch',
 			text: i18n.ts._mediaControls.loop,
-			icon: 'ti ti-repeat',
+			icon: 'ph ph-repeat',
 			ref: loop,
 		},
 		{
 			type: 'radio',
 			text: i18n.ts._mediaControls.playbackRate,
-			icon: 'ti ti-clock-play',
+			icon: 'ph ph-gauge',
 			ref: speed,
 			options: {
 				'0.25x': 0.25,
@@ -197,7 +197,7 @@ function showMenu(ev: MouseEvent) {
 		},
 		...(document.pictureInPictureEnabled ? [{
 			text: i18n.ts._mediaControls.pip,
-			icon: 'ti ti-picture-in-picture',
+			icon: 'ph ph-picture-in-picture',
 			action: togglePictureInPicture,
 		}] : []),
 		{
@@ -227,7 +227,7 @@ function showMenu(ev: MouseEvent) {
 		}, {
 			type: 'link' as const,
 			text: i18n.ts._fileViewer.title,
-			icon: 'ti ti-info-circle',
+			icon: 'ph ph-info',
 			to: `/my/drive/file/${props.video.id}`,
 		});
 	}
diff --git a/packages/frontend/src/components/MkMenu.vue b/packages/frontend/src/components/MkMenu.vue
index 526631b0e4..6ced2fecc2 100644
--- a/packages/frontend/src/components/MkMenu.vue
+++ b/packages/frontend/src/components/MkMenu.vue
@@ -53,7 +53,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<i v-if="item.icon" class="ti-fw" :class="[$style.icon, item.icon]" style="pointer-events: none;"></i>
 				<div :class="$style.item_content">
 					<span :class="$style.item_content_text" style="pointer-events: none;">{{ item.text }}</span>
-					<span :class="$style.caret" style="pointer-events: none;"><i class="ti ti-chevron-right ti-fw"></i></span>
+					<span :class="$style.caret" style="pointer-events: none;"><i class="ph-caret-right ph-bold ph-lg"></i></span>
 				</div>
 			</button>
 			<button v-else-if="item.type === 'radioOption'" :tabindex="i" class="_button" role="menuitem" :class="[$style.item, { [$style.radioActive]: item.active }]" @click="clicked(item.action, $event, false)" @mouseenter.passive="onItemMouseEnter(item)" @mouseleave.passive="onItemMouseLeave(item)">
diff --git a/packages/frontend/src/components/page/page.dynamic.vue b/packages/frontend/src/components/page/page.dynamic.vue
index 8c511a690d..7f80f0c455 100644
--- a/packages/frontend/src/components/page/page.dynamic.vue
+++ b/packages/frontend/src/components/page/page.dynamic.vue
@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <!-- 動的ページのブロックの代替。利用できないということを表示する -->
 <template>
 <div :class="$style.root">
-	<div :class="$style.heading"><i class="ti ti-dice-5"></i> {{ i18n.ts._pages.blocks.dynamic }}</div>
+	<div :class="$style.heading"><i class="ph ph-dice-5 ph-bold ph-lg"></i> {{ i18n.ts._pages.blocks.dynamic }}</div>
 	<I18n :src="i18n.ts._pages.blocks.dynamicDescription" tag="div" :class="$style.text">
 		<template #play>
 			<MkA to="/play" class="_link">Play</MkA>
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 3ff270926f..40ee2109eb 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -68,8 +68,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkFollowButton v-if="!$i || $i.id != page.user.id" :user="page.user!" :inline="true" :transparent="false" :full="true" :class="$style.follow"/>
 					</div>
 					<div :class="$style.pageDate">
-						<div><i class="ti ti-clock"></i> {{ i18n.ts.createdAt }}: <MkTime :time="page.createdAt" mode="detail"/></div>
-						<div v-if="page.createdAt != page.updatedAt"><i class="ti ti-clock-edit"></i> {{ i18n.ts.updatedAt }}: <MkTime :time="page.updatedAt" mode="detail"/></div>
+						<div><i class="ph ph-clock ph-bold ph-lg"></i> {{ i18n.ts.createdAt }}: <MkTime :time="page.createdAt" mode="detail"/></div>
+						<div v-if="page.createdAt != page.updatedAt"><i class="ph-pencil-simple ph-bold ph-lg"></i> {{ i18n.ts.updatedAt }}: <MkTime :time="page.updatedAt" mode="detail"/></div>
 					</div>
 					<div :class="$style.pageLinks">
 						<MkA v-if="!$i || $i.id !== page.userId" :to="`/@${username}/pages/${pageName}/view-source`" class="link">{{ i18n.ts._pages.viewSource }}</MkA>
@@ -163,12 +163,12 @@ function share(ev: MouseEvent) {
 	os.popupMenu([
 		{
 			text: i18n.ts.shareWithNote,
-			icon: 'ti ti-pencil',
+			icon: 'ph-pencil-simple',
 			action: shareWithNote,
 		},
 		...(isSupportShare() ? [{
 			text: i18n.ts.share,
-			icon: 'ti ti-share',
+			icon: 'ph-share-network',
 			action: shareWithNavigator,
 		}] : []),
 	], ev.currentTarget ?? ev.target);
diff --git a/packages/frontend/src/pages/settings/2fa.vue b/packages/frontend/src/pages/settings/2fa.vue
index 39261097d4..0396a3b085 100644
--- a/packages/frontend/src/pages/settings/2fa.vue
+++ b/packages/frontend/src/pages/settings/2fa.vue
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<div v-else-if="!$i.twoFactorEnabled" class="_gaps_s">
 				<MkButton primary gradate @click="registerTOTP">{{ i18n.ts._2fa.registerTOTP }}</MkButton>
-				<MkLink url="https://misskey-hub.net/docs/for-users/stepped-guides/how-to-enable-2fa/" target="_blank"><i class="ti ti-help-circle"></i> {{ i18n.ts.learnMore }}</MkLink>
+				<MkLink url="https://misskey-hub.net/docs/for-users/stepped-guides/how-to-enable-2fa/" target="_blank"><i class="ph-question ph-bold ph-lg"></i> {{ i18n.ts.learnMore }}</MkLink>
 			</div>
 		</MkFolder>
 
diff --git a/packages/frontend/src/pages/settings/plugin.vue b/packages/frontend/src/pages/settings/plugin.vue
index 4f1b3657bc..349015dd28 100644
--- a/packages/frontend/src/pages/settings/plugin.vue
+++ b/packages/frontend/src/pages/settings/plugin.vue
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 					<div class="_gaps_s">
 						<div class="_buttons">
-							<MkButton inline @click="copy(pluginLogs.get(plugin.id)?.join('\n'))"><i class="ti ti-copy"></i> {{ i18n.ts.copy }}</MkButton>
+							<MkButton inline @click="copy(pluginLogs.get(plugin.id)?.join('\n'))"><i class="ph-copy ph-bold ph-lg"></i> {{ i18n.ts.copy }}</MkButton>
 						</div>
 
 						<MkCode :code="pluginLogs.get(plugin.id)?.join('\n') ?? ''"/>
diff --git a/packages/frontend/src/scripts/get-note-menu.ts b/packages/frontend/src/scripts/get-note-menu.ts
index 40359a88bb..b988510238 100644
--- a/packages/frontend/src/scripts/get-note-menu.ts
+++ b/packages/frontend/src/scripts/get-note-menu.ts
@@ -347,7 +347,7 @@ export function getNoteMenu(props: {
 				action: () => toggleThreadMute(true),
 			}),
 			appearNote.userId === $i.id ? ($i.pinnedNoteIds ?? []).includes(appearNote.id) ? {
-				icon: 'ph-push-pin ph-bold ph-lgned-off',
+				icon: 'ph-push-pin-slash ph-bold ph-lg',
 				text: i18n.ts.unpin,
 				action: () => togglePin(false),
 			} : {
@@ -386,7 +386,7 @@ export function getNoteMenu(props: {
 				{ type: 'divider' },
 				{
 					type: 'parent' as const,
-					icon: 'ti ti-device-tv',
+					icon: 'ph-television ph-bold ph-lg',
 					text: i18n.ts.channel,
 					children: async () => {
 						const channelChildMenu = [] as MenuItem[];
@@ -395,7 +395,7 @@ export function getNoteMenu(props: {
 
 						if (channel.pinnedNoteIds.includes(appearNote.id)) {
 							channelChildMenu.push({
-								icon: 'ti ti-pinned-off',
+								icon: 'ph-push-pin-slash ph-bold ph-lg',
 								text: i18n.ts.unpin,
 								action: () => os.apiWithDialog('channels/update', {
 									channelId: appearNote.channel!.id,
@@ -404,7 +404,7 @@ export function getNoteMenu(props: {
 							});
 						} else {
 							channelChildMenu.push({
-								icon: 'ti ti-pin',
+								icon: 'ph-push-pin ph-bold ph-lg',
 								text: i18n.ts.pin,
 								action: () => os.apiWithDialog('channels/update', {
 									channelId: appearNote.channel!.id,
@@ -527,7 +527,7 @@ export function getRenoteMenu(props: {
 	if (appearNote.channel) {
 		channelRenoteItems.push(...[{
 			text: i18n.ts.inChannelRenote,
-			icon: 'ti ti-repeat',
+			icon: 'ph ph-repeat',
 			action: () => {
 				const el = props.renoteButton.value;
 				if (el) {
@@ -548,7 +548,7 @@ export function getRenoteMenu(props: {
 			},
 		}, {
 			text: i18n.ts.inChannelQuote,
-			icon: 'ti ti-quote',
+			icon: 'ph ph-quotes',
 			action: () => {
 				if (!props.mock) {
 					os.post({
@@ -563,7 +563,7 @@ export function getRenoteMenu(props: {
 	if (!appearNote.channel || appearNote.channel.allowRenoteToExternal) {
 		normalRenoteItems.push(...[{
 			text: i18n.ts.renote,
-			icon: 'ti ti-repeat',
+			icon: 'ph ph-repeat',
 			action: () => {
 				const el = props.renoteButton.value;
 				if (el) {
@@ -594,7 +594,7 @@ export function getRenoteMenu(props: {
 			},
 		}, (props.mock) ? undefined : {
 			text: i18n.ts.quote,
-			icon: 'ti ti-quote',
+			icon: 'ph ph-quotes',
 			action: () => {
 				os.post({
 					renote: appearNote,
diff --git a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
index e4ac9673dd..e22697ca68 100644
--- a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
+++ b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
@@ -7,7 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <MkContainer :showHeader="widgetProps.showHeader" class="mkw-bdayfollowings">
 	<template #icon><i class="ph-cake ph-bold ph-lg"></i></template>
 	<template #header>{{ i18n.ts._widgets.birthdayFollowings }}</template>
-	<template #func="{ buttonStyleClass }"><button class="_button" :class="buttonStyleClass" @click="actualFetch()"><i class="ti ti-refresh"></i></button></template>
+	<template #func="{ buttonStyleClass }"><button class="_button" :class="buttonStyleClass" @click="actualFetch()"><i class="ph-arrows-clockwise ph-bold ph-lg"></i></button></template>
 
 	<div :class="$style.bdayFRoot">
 		<MkLoading v-if="fetching"/>