diff --git a/lnbits/core/static/js/service-worker.js b/lnbits/core/static/js/service-worker.js
index 4f0addc22..041b9f32f 100644
--- a/lnbits/core/static/js/service-worker.js
+++ b/lnbits/core/static/js/service-worker.js
@@ -1,9 +1,9 @@
 // the cache version gets updated every time there is a new deployment
-const CACHE_VERSION = 1;
-const CURRENT_CACHE = `lnbits-${CACHE_VERSION}-`;
+const CACHE_VERSION = 1
+const CURRENT_CACHE = `lnbits-${CACHE_VERSION}-`
 
-const getApiKey = (request) => {
-  return request.headers.get('X-Api-Key') || "none"
+const getApiKey = request => {
+  return request.headers.get('X-Api-Key') || 'none'
 }
 
 // on activation we clean up the previously registered service workers
@@ -14,32 +14,38 @@ self.addEventListener('activate', evt =>
         cacheNames.map(cacheName => {
           const currentCacheVersion = cacheName.split('-').slice(-2, 2)
           if (currentCacheVersion !== CACHE_VERSION) {
-            return caches.delete(cacheName);
+            return caches.delete(cacheName)
           }
         })
-      );
+      )
     })
   )
-);
+)
 
 // The fetch handler serves responses for same-origin resources from a cache.
 // If no response is found, it populates the runtime cache with the response
 // from the network before returning it to the page.
 self.addEventListener('fetch', event => {
   // Skip cross-origin requests, like those for Google Analytics.
-  if (event.request.url.startsWith(self.location.origin) && event.request.method == "GET") {
-
+  if (
+    event.request.url.startsWith(self.location.origin) &&
+    event.request.method == 'GET'
+  ) {
     // Open the cache
-    event.respondWith(caches.open(CURRENT_CACHE + getApiKey(event.request)).then((cache) => {
-      // Go to the network first
-      return fetch(event.request).then((fetchedResponse) => {
-        cache.put(event.request, fetchedResponse.clone());
+    event.respondWith(
+      caches.open(CURRENT_CACHE + getApiKey(event.request)).then(cache => {
+        // Go to the network first
+        return fetch(event.request)
+          .then(fetchedResponse => {
+            cache.put(event.request, fetchedResponse.clone())
 
-        return fetchedResponse;
-      }).catch(() => {
-        // If the network is unavailable, get
-        return cache.match(event.request.url);
-      });
-    }));
+            return fetchedResponse
+          })
+          .catch(() => {
+            // If the network is unavailable, get
+            return cache.match(event.request.url)
+          })
+      })
+    )
   }
-});
\ No newline at end of file
+})
diff --git a/lnbits/core/static/js/wallet.js b/lnbits/core/static/js/wallet.js
index 057968938..baa9f605f 100644
--- a/lnbits/core/static/js/wallet.js
+++ b/lnbits/core/static/js/wallet.js
@@ -704,8 +704,9 @@ new Vue({
 })
 
 if (navigator.serviceWorker != null) {
-  navigator.serviceWorker.register('/service-worker.js')
-  .then(function(registration) {
-    console.log('Registered events at scope: ', registration.scope);
-  });
-}
\ No newline at end of file
+  navigator.serviceWorker
+    .register('/service-worker.js')
+    .then(function (registration) {
+      console.log('Registered events at scope: ', registration.scope)
+    })
+}
diff --git a/lnbits/extensions/tpos/templates/tpos/tpos.html b/lnbits/extensions/tpos/templates/tpos/tpos.html
index 02d6a98d6..ca196e4a0 100644
--- a/lnbits/extensions/tpos/templates/tpos/tpos.html
+++ b/lnbits/extensions/tpos/templates/tpos/tpos.html
@@ -1,6 +1,4 @@
-{% extends "public.html" %} 
-{% block toolbar_title %}
-{{ tpos.name }}
+{% extends "public.html" %} {% block toolbar_title %} {{ tpos.name }}
 <q-btn
   flat
   dense
@@ -9,8 +7,7 @@
   icon="share"
   color="white"
 ></q-btn>
-{% endblock %} 
-{% block footer %}{% endblock %} {% block page_container %}
+{% endblock %} {% block footer %}{% endblock %} {% block page_container %}
 <q-page-container>
   <q-page>
     <q-page-sticky v-if="exchangeRate" expand position="top">
@@ -179,27 +176,24 @@
       </q-card>
     </q-dialog>
 
-    <q-dialog
-      v-model="tipDialog.show"
-      position="top"
-    >
+    <q-dialog v-model="tipDialog.show" position="top">
       <q-card class="q-pa-lg q-pt-xl lnbits__dialog-card">
         <div class="text-center q-mb-xl">
-         <b style="font-size: 24px;">Would you like to leave a tip?</b>
+          <b style="font-size: 24px">Would you like to leave a tip?</b>
         </div>
         <div class="text-center q-mb-xl">
-         <q-btn
-         style="padding: 10px; margin: 3px;"
-          unelevated
-          @click="processTipSelection(tip)"
-          size="xl"
-          :outline="!($q.dark.isActive)"
-          rounded
-          color="primary"
-          v-for="tip in this.tip_options" 
-          :key="tip"
-          >{% raw %}{{ tip }}{% endraw %}%</q-btn
-        >
+          <q-btn
+            style="padding: 10px; margin: 3px"
+            unelevated
+            @click="processTipSelection(tip)"
+            size="xl"
+            :outline="!($q.dark.isActive)"
+            rounded
+            color="primary"
+            v-for="tip in this.tip_options"
+            :key="tip"
+            >{% raw %}{{ tip }}{% endraw %}%</q-btn
+          >
         </div>
         <div class="text-center q-mb-xl">
           <p><a @click="processTipSelection(0)"> No, thanks</a></p>
@@ -264,7 +258,7 @@
   }
 
   .keypad .btn-confirm {
-     grid-area: 1 / 4 / 5 / 4;
+    grid-area: 1 / 4 / 5 / 4;
   }
 </style>
 {% endblock %} {% block scripts %}
@@ -281,7 +275,7 @@
         tip_options: JSON.parse('{{ tpos.tip_options }}'),
         exchangeRate: null,
         stack: [],
-        tipAmount: 0.00,
+        tipAmount: 0.0,
         invoiceDialog: {
           show: false,
           data: null,
@@ -289,7 +283,7 @@
           paymentChecker: null
         },
         tipDialog: {
-          show: false,
+          show: false
         },
         urlDialog: {
           show: false
@@ -323,7 +317,7 @@
     methods: {
       closeInvoiceDialog: function () {
         this.stack = []
-        this.tipAmount = 0.00
+        this.tipAmount = 0.0
         var dialog = this.invoiceDialog
         setTimeout(function () {
           clearInterval(dialog.paymentChecker)
@@ -333,8 +327,10 @@
       processTipSelection: function (selectedTipOption) {
         this.tipDialog.show = false
 
-        if(selectedTipOption) {
-          const tipAmount = parseFloat(parseFloat((selectedTipOption / 100) * this.amount))
+        if (selectedTipOption) {
+          const tipAmount = parseFloat(
+            parseFloat((selectedTipOption / 100) * this.amount)
+          )
           const subtotal = parseFloat(this.amount)
           const grandTotal = parseFloat((tipAmount + subtotal).toFixed(2))
           const totalString = grandTotal.toFixed(2).toString()
@@ -343,7 +339,7 @@
           for (var i = 0; i < totalString.length; i++) {
             const char = totalString[i]
 
-            if(char !== ".") {
+            if (char !== '.') {
               this.stack.push(char)
             }
           }
@@ -353,14 +349,14 @@
 
         this.showInvoice()
       },
-      submitForm: function() {
-        if(this.tip_options.length) {
+      submitForm: function () {
+        if (this.tip_options.length) {
           this.showTipModal()
         } else {
           this.showInvoice()
         }
       },
-      showTipModal: function() {
+      showTipModal: function () {
         this.tipDialog.show = true
       },
       showInvoice: function () {
@@ -371,7 +367,7 @@
           .post('/tpos/api/v1/tposs/' + this.tposId + '/invoices', null, {
             params: {
               amount: this.sat,
-              tipAmount: this.tipAmountSat,
+              tipAmount: this.tipAmountSat
             }
           })
           .then(function (response) {
diff --git a/lnbits/static/js/base.js b/lnbits/static/js/base.js
index 48496b3c2..7c0e9958d 100644
--- a/lnbits/static/js/base.js
+++ b/lnbits/static/js/base.js
@@ -356,7 +356,7 @@ window.windowMixin = {
     }
     this.g.allowedThemes = window.allowedThemes ?? ['bitcoin']
 
-    addEventListener('offline', event => { 
+    addEventListener('offline', event => {
       this.g.offline = true
     })
 
@@ -442,4 +442,4 @@ window.decryptLnurlPayAES = function (success_action, preimage) {
       let decoder = new TextDecoder('utf-8')
       return decoder.decode(valueb)
     })
-}
\ No newline at end of file
+}
diff --git a/lnbits/templates/base.html b/lnbits/templates/base.html
index a744e1346..6ab1ec840 100644
--- a/lnbits/templates/base.html
+++ b/lnbits/templates/base.html
@@ -17,10 +17,8 @@
     <meta name="mobile-web-app-capable" content="yes" />
     <meta name="apple-mobile-web-app-capable" content="yes" />
     {% if web_manifest %}
-      <link async="async" rel="manifest" href="{{ web_manifest }}" />
-    {% endif %}
-
-    {% block head_scripts %}{% endblock %}
+    <link async="async" rel="manifest" href="{{ web_manifest }}" />
+    {% endif %} {% block head_scripts %}{% endblock %}
   </head>
 
   <body data-theme="bitcoin">
@@ -55,10 +53,13 @@
             >
           </q-badge>
           {% endblock %}
-          <q-badge v-if="g.offline" color="red" text-color="white" class="q-mr-md">
-            <span>
-              OFFLINE
-            </span>
+          <q-badge
+            v-if="g.offline"
+            color="red"
+            text-color="white"
+            class="q-mr-md"
+          >
+            <span> OFFLINE </span>
           </q-badge>
           <q-btn-dropdown
             v-if="g.allowedThemes && g.allowedThemes.length > 1"