diff --git a/app/src/filters/date.js b/app/src/filters/date.js
index 77e41d81..572d29ef 100644
--- a/app/src/filters/date.js
+++ b/app/src/filters/date.js
@@ -3,10 +3,17 @@ import format from 'date-fns/format'
 
 import { dateFnsLocale as locale } from '@/i18n/helpers'
 
-export function distanceToNow (dateStr, addSuffix = true) {
-  return formatDistanceToNow(new Date(dateStr), { addSuffix, locale })
+export function distanceToNow (date, addSuffix = true, isTimestamp = false) {
+  return formatDistanceToNow(
+    new Date(isTimestamp ? date * 1000 : date),
+    { addSuffix, locale }
+  )
 }
 
-export function readableDate (dateStr) {
-  return format(new Date(dateStr), 'PPPpp', { locale })
+export function readableDate (date, isTimestamp = false) {
+  return format(
+    new Date(isTimestamp ? date * 1000 : date),
+    'PPPpp',
+    { locale }
+  )
 }
diff --git a/app/src/helpers/api.js b/app/src/helpers/api.js
index 6738d935..4103a5d8 100644
--- a/app/src/helpers/api.js
+++ b/app/src/helpers/api.js
@@ -17,7 +17,11 @@ import store from '@/store'
 export function objectToParams (object, { addLocale = false } = {}) {
   const urlParams = new URLSearchParams()
   for (const [key, value] of Object.entries(object)) {
-    urlParams.append(key, value)
+    if (Array.isArray(value)) {
+      value.forEach(v => urlParams.append(key, v))
+    } else {
+      urlParams.append(key, value)
+    }
   }
   if (addLocale) {
     urlParams.append('locale', store.getters.locale)
diff --git a/app/src/i18n/locales/en.json b/app/src/i18n/locales/en.json
index 9721b164..954cf27a 100644
--- a/app/src/i18n/locales/en.json
+++ b/app/src/i18n/locales/en.json
@@ -167,7 +167,7 @@
     "hook_data_mail_desc": "Raw emails stored on the server",
     "id": "ID",
     "ignore": "Ignore",
-    "ignored": "%s ignored",
+    "ignored": "{count} ignored",
     "inactive": "Inactive",
     "infos": "Info",
     "install": "Install",
@@ -178,7 +178,7 @@
     "internal_exception": "<strong>Yunohost encountered an internal error:/</strong><br><em>Really sorry about that.<br>You should look for help on <a href=\"https://forum.yunohost.org/\">the forum</a> or <a href=\"https://chat.yunohost.org/\">the chat</a> to fix the situation, or report the bug on <a href=\"https://github.com/YunoHost/issues\">the bugtracker</a>.</em><br>The following information might be useful for the person helping you:<h3>Action</h3><pre>%s%s</pre><h3>Traceback</h3><pre>%s</pre>",
     "ipv4": "IPv4",
     "ipv6": "IPv6",
-    "issues": "%s issues",
+    "issues": "{count} issues",
     "label": "Label",
     "label_for_manifestname": "Label for %s",
     "last_ran": "Last time ran:",
@@ -361,7 +361,7 @@
     "users_new": "New user",
     "users_no": "No users.",
     "version": "Version",
-    "warnings": "%s warnings",
+    "warnings": "{count} warnings",
     "warning_first_user": "You probably need to <a href='#/users/create' class='alert-link'>create a user</a> first.",
     "words": {
         "collapse": "Collapse"
diff --git a/app/src/router/routes.js b/app/src/router/routes.js
index 2c6dc8ea..3a508568 100644
--- a/app/src/router/routes.js
+++ b/app/src/router/routes.js
@@ -263,6 +263,20 @@ const routes = [
         { name: 'tool-power', trad: 'tools_shutdown_reboot' }
       ]
     }
+  },
+
+  /* ────────────╮
+   │  DIAGNOSIS  │
+   ╰──────────── */
+  {
+    name: 'diagnosis',
+    path: '/diagnosis',
+    component: () => import(/* webpackChunkName: "views/diagnosis" */ '@/views/diagnosis/Diagnosis'),
+    meta: {
+      breadcrumb: [
+        { name: 'diagnosis', trad: 'diagnosis' }
+      ]
+    }
   }
 ]
 
diff --git a/app/src/scss/main.scss b/app/src/scss/main.scss
index 5140c2af..6d144a97 100644
--- a/app/src/scss/main.scss
+++ b/app/src/scss/main.scss
@@ -80,10 +80,10 @@ body {
 }
 
 // collapse icon
-.not-collapsed .icon {
+.not-collapsed > .icon {
   transform: rotate(-90deg);
 }
-.collapsed .icon {
+.collapsed > .icon {
   transform: rotate(90deg);
   position: relative;
   top: 2px;
diff --git a/app/src/views/diagnosis/Diagnosis.vue b/app/src/views/diagnosis/Diagnosis.vue
new file mode 100644
index 00000000..e5a2c841
--- /dev/null
+++ b/app/src/views/diagnosis/Diagnosis.vue
@@ -0,0 +1,216 @@
+<template>
+  <div class="diagnosis">
+    <div class="actions">
+      <div class="buttons ml-auto">
+        <b-button @click="shareLogs">
+          <icon iname="cloud-upload" /> {{ $t('logs_share_with_yunopaste') }}
+        </b-button>
+      </div>
+    </div>
+
+    <b-alert variant="info" show>
+      {{ $t(reports ? 'diagnosis_explanation' : 'diagnosis_first_run') }}
+      <b-button
+        v-if="reports === null" @click="runFullDiagnosis"
+        class="d-block mt-2" variant="info"
+      >
+        <icon iname="stethoscope" /> {{ $t('run_first_diagnosis') }}
+      </b-button>
+    </b-alert>
+
+    <b-alert
+      class="mb-5" variant="warning" show
+      v-t="'diagnosis_experimental_disclaimer'"
+    />
+
+    <!-- REPORT CARD -->
+    <b-card no-body v-for="({ id, description, noIssues, errors, warnings, ignoreds, timestamp, items }, r) in reports" :key="id">
+      <!-- REPORT HEADER -->
+      <b-card-header class="d-flex align-items-md-center flex-column flex-md-row">
+        <div class="d-flex align-items-center">
+          <h2>{{ description }}</h2>
+
+          <b-badge
+            v-if="noIssues" pill variant="success"
+            v-t="'everything_good'"
+          />
+          <b-badge
+            v-if="errors" variant="danger" pill
+            v-t="{ path: 'issues', args: { count: errors } }"
+          />
+          <b-badge v-if="warnings" variant="warning" v-t="{ path: 'warnings', args: { count: warnings } }" />
+          <b-badge v-if="ignoreds" v-t="{ path: 'ignored', args: { count: ignoreds } }" />
+        </div>
+
+        <div class="d-flex ml-md-auto mt-2 mt-md-0">
+          <b-button size="sm" :variant="items ? 'info' : 'success'" @click="reRunDiagnosis(id)">
+            <icon iname="refresh" /> {{ $t('rerun_diagnosis') }}
+          </b-button>
+
+          <b-button
+            size="sm" variant="outline-secondary" class="ml-auto ml-md-2"
+            v-b-toggle="'collapse-' + id"
+          >
+            <icon iname="chevron-right" /><span class="sr-only">{{ $t('words.collapse') }}</span>
+          </b-button>
+        </div>
+      </b-card-header>
+
+      <!-- REPORT BODY -->
+      <b-collapse :id="'collapse-' + id" :visible="!noIssues">
+        <p class="last-time-run">
+          {{ $t('last_ran') }} {{ timestamp | distanceToNow(true, true) }}
+        </p>
+
+        <b-list-group flush>
+          <!-- REPORT ITEM -->
+          <b-list-group-item
+            v-for="({ status, icon, summary, ignored, issue, details, filterArgs, meta }, i) in items"
+            :key="i" :variant="status"
+          >
+            <div class="item-button d-flex align-items-center">
+              <icon :iname="icon" class="mr-1" /> <p class="mb-0 mr-2" v-html="summary" />
+
+              <div class="d-flex flex-column flex-lg-row ml-auto">
+                <b-button
+                  v-if="ignored" size="sm"
+                  @click="toggleIgnoreIssue(false, filterArgs, r, i)"
+                >
+                  <icon iname="bell" /> <span v-t="'unignore'" />
+                </b-button>
+                <b-button
+                  v-else-if="issue"
+                  variant="warning" size="sm" @click="toggleIgnoreIssue(true, filterArgs, r, i)"
+                >
+                  <icon iname="bell-slash" /> <span v-t="'ignore'" />
+                </b-button>
+                <b-button
+                  v-if="details"
+                  size="sm" variant="light" class="ml-lg-2 mt-2 mt-lg-0"
+                  v-b-toggle="'collapse-' + id + '-item-' + i"
+                >
+                  <icon iname="level-down" /> <span v-t="'details'" />
+                </b-button>
+              </div>
+            </div>
+
+            <b-collapse v-if="details" :id="'collapse-' + id + '-item-' + i">
+              <ul class="mt-2 pl-4">
+                <li v-for="(detail, index) in details" :key="index" v-html="detail" />
+              </ul>
+            </b-collapse>
+          </b-list-group-item>
+        </b-list-group>
+      </b-collapse>
+    </b-card>
+  </div>
+</template>
+
+<script>
+import api from '@/helpers/api'
+import { distanceToNow } from '@/filters/date'
+
+export default {
+  name: 'Diagnosis',
+
+  data () {
+    return {
+      reports: undefined
+    }
+  },
+
+  filters: {
+    distanceToNow
+  },
+
+  methods: {
+    fetchData () {
+      api.get('diagnosis/show?full').then(({ reports }) => {
+        if (!Array.isArray(reports)) {
+          this.reports = null
+          return
+        }
+
+        for (var report of reports) {
+          report.warnings = 0
+          report.errors = 0
+          report.ignoreds = 0
+
+          for (var item of report.items) {
+            let issue = false
+            let icon = ''
+            const status = item.status = item.status.toLowerCase()
+
+            if (status === 'success') {
+              icon = 'check-circle'
+            } else if (status === 'info') {
+              icon = 'info-circle'
+            } else if (item.ignored) {
+              icon = status !== 'error' ? status : 'times'
+              item.status = 'ignored'
+              report.ignoreds++
+            } else if (status === 'warning') {
+              icon = status
+              issue = true
+              report.warnings++
+            } else if (status === 'error') {
+              item.status = 'danger'
+              icon = 'times'
+              issue = true
+              report.errors++
+            }
+
+            item.issue = issue
+            item.icon = icon
+            item.filterArgs = Object.entries(item.meta).reduce((filterArgs, entries) => {
+              filterArgs.push(entries.join('='))
+              return filterArgs
+            }, [report.id])
+          }
+          report.noIssues = report.warnings + report.errors === 0
+        }
+        this.reports = reports
+      })
+    },
+
+    runFullDiagnosis () {
+      api.post('diagnosis/run').then(this.fetchData)
+    },
+
+    reRunDiagnosis (id) {
+      api.post('diagnosis/run?force', { categories: [id] }).then(this.fetchData)
+    },
+
+    toggleIgnoreIssue (ignore, filterArgs, reportIndex, itemIndex) {
+      const key = (ignore ? 'add' : 'remove') + '_filter'
+      api.post('diagnosis/ignore', { [key]: filterArgs }).then(this.fetchData)
+    },
+
+    shareLogs () {
+      api.get('diagnosis/show?share').then(({ url }) => {
+        window.open(url, '_blank')
+      })
+    }
+  },
+
+  created () {
+    api.post('diagnosis/run?except-if-never-ran-yet').then(this.fetchData)
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.badge {
+  margin-left: .5rem
+}
+
+p.last-time-run {
+  margin: .75rem 1rem;
+}
+
+.item-button {
+  button {
+    min-width: 6rem;
+  }
+}
+</style>