diff --git a/frontend/src/lib/xray/inbound-link.ts b/frontend/src/lib/xray/inbound-link.ts
index 7a0fae8a..a30cf81f 100644
--- a/frontend/src/lib/xray/inbound-link.ts
+++ b/frontend/src/lib/xray/inbound-link.ts
@@ -944,3 +944,10 @@ export function genWireguardConfigs(input: GenWireguardFanoutInput): string {
     }))
     .join('\r\n');
 }
+
+export function isPostQuantumLink(link: string): boolean {
+  if (/[?&]pqv=/.test(link)) return true;
+  if (link.includes('mlkem768') || link.includes('mldsa65')) return true;
+  if (link.includes('ML-KEM-768')) return true;
+  return false;
+}
diff --git a/frontend/src/pages/clients/ClientInfoModal.tsx b/frontend/src/pages/clients/ClientInfoModal.tsx
index fdd20b5a..b0049bef 100644
--- a/frontend/src/pages/clients/ClientInfoModal.tsx
+++ b/frontend/src/pages/clients/ClientInfoModal.tsx
@@ -6,6 +6,7 @@ import { CopyOutlined, QrcodeOutlined } from '@ant-design/icons';
 import { ClipboardManager, HttpUtil, IntlUtil, SizeFormatter } from '@/utils';
 import { useDatepicker } from '@/hooks/useDatepicker';
 import type { ClientRecord, InboundOption } from '@/hooks/useClients';
+import { isPostQuantumLink } from '@/lib/xray/inbound-link';
 import QrPanel from '@/pages/inbounds/QrPanel';
 import './ClientInfoModal.css';
 
@@ -33,20 +34,6 @@ const INBOUND_PROTOCOL_COLORS: Record<string, string> = {
 
 const INBOUND_CHIP_LIMIT = 1;
 
-// Post-quantum keys blow up the encoded URL past what a single QR can
-// hold. In VLESS share links the algorithm names don't appear as plain
-// text — they ride inside query params:
-//   - mldsa65Verify becomes `pqv=<base64>` (sub/subService.go:841)
-//   - ML-KEM-768 becomes `encryption=mlkem768x25519plus.<...>`
-// We also keep the literal substrings so configs that DO embed them
-// directly (e.g. wireguard config text) still match.
-function isPostQuantumLink(link: string): boolean {
-  if (/[?&]pqv=/.test(link)) return true;
-  if (link.includes('mlkem768') || link.includes('mldsa65')) return true;
-  if (link.includes('ML-KEM-768')) return true;
-  return false;
-}
-
 // 3x-ui's genRemark concatenates inbound remark + client email (and an
 // optional extra) using a configurable separator. The email half is
 // redundant in the row title — the modal already names the client by
diff --git a/frontend/src/pages/clients/ClientQrModal.tsx b/frontend/src/pages/clients/ClientQrModal.tsx
index 6263414a..14f2c950 100644
--- a/frontend/src/pages/clients/ClientQrModal.tsx
+++ b/frontend/src/pages/clients/ClientQrModal.tsx
@@ -2,6 +2,7 @@ import { useEffect, useMemo, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Collapse, Modal, Spin } from 'antd';
 import { HttpUtil } from '@/utils';
+import { isPostQuantumLink } from '@/lib/xray/inbound-link';
 import QrPanel from '@/pages/inbounds/QrPanel';
 import type { ClientRecord } from '@/hooks/useClients';
 
@@ -93,7 +94,13 @@ export default function ClientQrModal({
       out.push({
         key: `l${idx}`,
         label: `${t('pages.clients.link')} ${idx + 1}`,
-        children: <QrPanel value={link} remark={`${client?.email || ''} #${idx + 1}`} />,
+        children: (
+          <QrPanel
+            value={link}
+            remark={`${client?.email || ''} #${idx + 1}`}
+            showQr={!isPostQuantumLink(link)}
+          />
+        ),
       });
     });
     return out;
diff --git a/frontend/src/pages/inbounds/QrCodeModal.tsx b/frontend/src/pages/inbounds/QrCodeModal.tsx
index edfb2e71..3894d543 100644
--- a/frontend/src/pages/inbounds/QrCodeModal.tsx
+++ b/frontend/src/pages/inbounds/QrCodeModal.tsx
@@ -8,6 +8,7 @@ import {
   genAllLinks,
   genWireguardConfigs,
   genWireguardLinks,
+  isPostQuantumLink,
 } from '@/lib/xray/inbound-link';
 import { inboundFromDb, type DbInboundLike } from '@/lib/xray/inbound-from-db';
 import QrPanel from './QrPanel';
@@ -140,7 +141,7 @@ export default function QrCodeModal({
           value={item.value}
           remark={item.header}
           downloadName={item.downloadName || ''}
-          showQr={!item.value.includes('mldsa65') && !item.value.includes('ML-KEM-768')}
+          showQr={!isPostQuantumLink(item.value)}
         />
       ),
     })),
diff --git a/frontend/src/pages/sub/SubPage.tsx b/frontend/src/pages/sub/SubPage.tsx
index c99b7cff..10ff9865 100644
--- a/frontend/src/pages/sub/SubPage.tsx
+++ b/frontend/src/pages/sub/SubPage.tsx
@@ -31,6 +31,7 @@ import {
 } from '@ant-design/icons';
 
 import { ClipboardManager, IntlUtil, LanguageManager } from '@/utils';
+import { isPostQuantumLink } from '@/lib/xray/inbound-link';
 import { setMessageInstance } from '@/utils/messageBus';
 import { pauseAnimationsUntilLeave, useTheme } from '@/hooks/useTheme';
 import SubUsageSummary from './SubUsageSummary';
@@ -90,19 +91,6 @@ function trimEmail(remark: string, email: string): string {
     .trim();
 }
 
-// Post-quantum keys blow up the encoded URL past what a single QR can
-// hold. The algorithm names don't appear as plain text in the URL —
-// they ride inside query params: mldsa65Verify → `pqv=<base64>`,
-// ML-KEM-768 → `encryption=mlkem768x25519plus.<...>`. The literal
-// substrings are also matched in case a config (e.g. wireguard) embeds
-// them directly.
-function isPostQuantumLink(link: string): boolean {
-  if (/[?&]pqv=/.test(link)) return true;
-  if (link.includes('mlkem768') || link.includes('mldsa65')) return true;
-  if (link.includes('ML-KEM-768')) return true;
-  return false;
-}
-
 // Decode a base64 string as UTF-8. atob() returns a binary string where
 // each char holds one raw byte (Latin-1 interpretation), which mangles
 // any multi-byte UTF-8 sequence in the payload — most commonly the