diff --git a/admin/intro.php b/admin/intro.php
index 0be9e70a2..af8fd8c97 100644
--- a/admin/intro.php
+++ b/admin/intro.php
@@ -187,6 +187,199 @@ SELECT MIN(date_available)
 
 trigger_notify('loc_end_intro');
 
+// +-----------------------------------------------------------------------+
+// |                           get activity data                           |
+// +-----------------------------------------------------------------------+
+
+$number_week = 4;
+$date = new DateTime();
+//Array for the JS tooltip
+$activity_last_weeks = array();
+//Count mondays
+$mondays = 0;
+//Get mondays date (day + month) for the chart legend
+$mondays_date = array();
+//Array for sorting days in circle size
+$temp_data = array();
+
+//Get data from $number_week last weeks
+while ($mondays < $number_week) 
+{
+  $date_string = $date->format('Y-m-d');
+  $query = '
+SELECT *
+  FROM `'.ACTIVITY_TABLE.'`
+  WHERE occured_on LIKE "'.$date_string.'%"
+;';
+
+  $result = query2array($query, null);
+
+  $this_day = array('number' => 0);
+  foreach ($result as $act) {
+    if(isset($this_day['details'][ucfirst($act['object'])][ucfirst($act['action'])]))
+    {
+      $this_day['details'][ucfirst($act['object'])][ucfirst($act['action'])] += 1;
+    } else {
+      $this_day['details'][ucfirst($act['object'])][ucfirst($act['action'])] = 1;
+    }
+    $this_day['number'] += 1;
+  }
+
+  if ($this_day['number'] > 0) 
+  {
+    $temp_data[] = array('x' => $this_day['number'], 'd'=>$date->format('N'), 'w'=>$mondays); 
+  }
+
+
+  $activity_last_weeks[$mondays][intval($date->format('N'))] = $this_day;
+
+  if ($date->format('D') == 'Mon') {
+    $mondays_date[$mondays]['m'] = $date->format('m');
+    $mondays_date[$mondays]['d'] = $date->format('d');
+    $mondays += 1;
+  }
+  $date->sub(new DateInterval('P1D'));
+}
+
+// Algorithm to sort days in circle size :
+//  * Get the difference between sorted numbers of activity per day (only not null numbers)
+//  * Split days max $circle_sizes time on the biggest difference (but not below 120%)
+//  * Set the sizes according to the groups created
+
+//Function to sort days by number of activity
+function cmp_day($a, $b)
+{
+  if ($a['x'] == $b['x']) {
+    return 0;
+  }
+  return ($a['x'] < $b['x']) ? -1 : 1;
+}
+
+usort($temp_data, 'cmp_day');
+
+//Get the percent difference
+$diff_x = array();
+
+for ($i=1; $i < count($temp_data); $i++) 
+{ 
+  $diff_x[] = $temp_data[$i]['x']/$temp_data[$i-1]['x']*100;
+}
+
+$split = 0;
+//Split (split represented by -1)
+while (max($diff_x) > 120) {
+  $diff_x[array_search(max($diff_x), $diff_x)] = -1;
+  $split++;
+}
+
+//Fill empty chart data for the template
+$chart_data = array();
+for ($i=0; $i < $number_week; $i++) { 
+  for ($j=1; $j <= 7; $j++) { 
+    $chart_data[$i][$j] = 0;
+  }
+}
+
+$size = 1;
+$chart_data[$temp_data[0]['w']][$temp_data[0]['d']] = $size;
+//Set sizes in chart data
+for ($i=1; $i < count($temp_data); $i++) { 
+  if ($diff_x[$i-1] == -1) {$size++;}
+  $chart_data[$temp_data[$i]['w']][$temp_data[$i]['d']] = $size;
+}
+
+//Assign data for the template
+$template->assign('ACTIVITY_MONDAYS_DATE',array_reverse($mondays_date));
+$template->assign('ACTIVITY_LAST_WEEKS', array_reverse($activity_last_weeks));
+$template->assign('ACTIVITY_CHART_DATA',array_reverse($chart_data));
+$template->assign('ACTIVITY_CHART_NUMBER_SIZES',$size);
+
+
+// +-----------------------------------------------------------------------+
+// |                           get storage data                            |
+// +-----------------------------------------------------------------------+
+
+$video_format = array('webm','webmv','ogg','ogv','mp4','m4v');
+$data_storage = array();
+
+//Select files in Image_Table
+$query = '
+SELECT file, filesize
+  FROM `'.IMAGES_TABLE.'`
+;';
+
+$result = query2array($query, null);
+
+foreach ($result as $file) 
+{
+  $tabString = explode('.',$file['file']);
+  $ext = $tabString[count($tabString) -1];
+  $size = $file['filesize'];
+  if (in_array($ext, $conf['picture_ext'])) 
+  {
+    if (isset($data_storage['Photos'])) 
+    {
+      $data_storage['Photos'] += $size;
+    } else {
+      $data_storage['Photos'] = $size;
+    }
+  } elseif (in_array($ext, $video_format)) {
+    if (isset($data_storage['Videos'])) 
+    {
+      $data_storage['Videos'] += $size;
+    } else {
+      $data_storage['Videos'] = $size;
+    }
+  } else {
+    if (isset($data_storage['Others'])) 
+    {
+      $data_storage['Others'] += $size;
+    } else {
+      $data_storage['Others'] = $size;
+    }
+  }
+}
+
+//Select files from format table
+$query = '
+SELECT SUM(filesize)
+  FROM `'.IMAGE_FORMAT_TABLE.'`
+;';
+
+$result = query2array($query);
+
+if (isset($result[0]['SUM(filesize)']))
+{
+  $data_storage['Format'] = $result[0]['SUM(filesize)'];
+}
+
+//If the host is not windows, get the cache size
+if (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') 
+{
+  $f = './_data';
+  $io = popen ( '/usr/bin/du -sk ' . $f, 'r' );
+  $size = fgets ($io, 4096);
+  $size = substr ( $size, 0, strpos ( $size, "\t" ) );
+  pclose ( $io );
+  $data_storage['Cache'] = $size;
+}
+
+//Calculate total storage
+$total_storage = 0;
+foreach ($data_storage as $value) 
+{
+  $total_storage += $value;
+}
+
+//Get percentage of the total storage
+foreach ($data_storage as $key=>$value) 
+{
+  $data_storage[$key] = $value/$total_storage*100;
+}
+
+//Pass data to HTML
+$template->assign('STORAGE_TOTAL',$total_storage/1000);
+$template->assign('STORAGE_CHART_DATA',$data_storage);
 // +-----------------------------------------------------------------------+
 // |                           sending html code                           |
 // +-----------------------------------------------------------------------+
diff --git a/admin/themes/default/template/intro.tpl b/admin/themes/default/template/intro.tpl
index a9f253f8d..10602ff0a 100644
--- a/admin/themes/default/template/intro.tpl
+++ b/admin/themes/default/template/intro.tpl
@@ -7,7 +7,7 @@ var piwigo_need_update_msg = '<a href="admin.php?page=updates">{'A new version o
 var ext_need_update_msg = '<a href="admin.php?page=updates&amp;tab=ext">{'Some upgrades are available for extensions.'|@translate|@escape:"javascript"} <i class="icon-right"></i></a>';
 
 {literal}
-jQuery().ready(function(){
+  jQuery().ready(function(){
 	jQuery('.cluetip').cluetip({
 		width: 300,
 		splitTitle: '|',
@@ -61,6 +61,7 @@ jQuery().ready(function(){
 
 <h2>{'Piwigo Administration'|@translate}</h2>
 
+<div class="intro-page-container">
 <div class="stat-boxes">
 
 {if $NB_PHOTOS > 1}
@@ -140,6 +141,52 @@ jQuery().ready(function(){
 
 </div> {* .stat-boxes *}
 
+<div class="intro-charts">
+
+  <div class="chart-title"> {"Activity peak in the last weeks"|@translate}</div>
+  <div class="activity-chart" style="grid-template-rows: repeat({count($ACTIVITY_CHART_DATA) + 1}, 6vw);">
+    {foreach from=$ACTIVITY_CHART_DATA item=WEEK_ACTIVITY key=WEEK_NUMBER}
+      <div id="week-{$WEEK_NUMBER}-legend" class="row-legend"><div>{"Week of %s/%s"|@translate:$ACTIVITY_MONDAYS_DATE[$WEEK_NUMBER]['d']:$ACTIVITY_MONDAYS_DATE[$WEEK_NUMBER]['m']}</div></div>
+      {foreach from=$WEEK_ACTIVITY item=SIZE key=DAY_NUMBER}
+        <span>
+          {if $SIZE != 0}
+          <div id="day{$WEEK_NUMBER}-{$DAY_NUMBER}" style="height:{$SIZE/$ACTIVITY_CHART_NUMBER_SIZES * 7 + 1}vw;width:{$SIZE/$ACTIVITY_CHART_NUMBER_SIZES * 7 + 1}vw;opacity:{$SIZE/$ACTIVITY_CHART_NUMBER_SIZES * 0.7 + 0.1}"></div>
+          {if $ACTIVITY_LAST_WEEKS[$WEEK_NUMBER][$DAY_NUMBER]["number"] != 0}
+          <p style="transform: translate(-50%, 50%) translate(0, {if $SIZE/2 >= 1}{$SIZE/2}{else}2{/if}vw)"> 
+            <b>{"%s Activities"|@translate:$ACTIVITY_LAST_WEEKS[$WEEK_NUMBER][$DAY_NUMBER]["number"]}</b>
+            {foreach from=$ACTIVITY_LAST_WEEKS[$WEEK_NUMBER][$DAY_NUMBER]["details"] item=actions key=cat}
+              <br> {$cat} : {foreach from=$actions item=number key=action} ({$action}) {$number} {/foreach}
+            {/foreach}
+          </p>
+          {/if}
+          {/if}
+        </span>
+      {/foreach}
+    {/foreach}
+    <div></div>
+    {foreach from=array('Mon'|translate, 'Tue'|translate, 'Wed'|translate, 'Thu'|translate, 'Fri'|translate, 'Sat'|translate, 'Sun'|translate) item=day}
+      <div class="col-legend">{$day} <div class="line-vertical" style="height: {count($ACTIVITY_CHART_DATA)*100 - 50}%;"></div></div>
+    {/foreach}
+  </div>
+
+  <div class="chart-title"> {"Storage"|@translate} <span class="chart-title-infos"> {'%s MB used'|translate:$STORAGE_TOTAL} </span></div>
+
+  <div class="storage-chart">
+    {foreach from=$STORAGE_CHART_DATA item=value}
+      <span style="width:{$value}%"> <p>{round($value)}%</p> </span>  
+    {/foreach}
+  </div>
+
+  <div class="storage-chart-legend">
+    {foreach from=$STORAGE_CHART_DATA item=i key=type}
+      <div><span></span> <p>{$type|translate}</p></div>
+    {/foreach}
+  </div>
+
+</div> {* .intro-chart *}
+
+</div> {* .intro-page-container *}
+
 <p class="showCreateAlbum">
 {if $ENABLE_SYNCHRONIZATION}
   <a href="{$U_QUICK_SYNC}" class="icon-exchange">{'Quick Local Synchronization'|translate}</a>
@@ -149,4 +196,4 @@ jQuery().ready(function(){
 {if isset($SUBSCRIBE_BASE_URL)}
   <br><span class="newsletter-subscription"><a href="{$SUBSCRIBE_BASE_URL}{$EMAIL}" id="newsletterSubscribe" class="externalLink cluetip icon-mail-alt" title="{'Piwigo Announcements Newsletter'|@translate}|{'Keep in touch with Piwigo project, subscribe to Piwigo Announcement Newsletter. You will receive emails when a new release is available (sometimes including a security bug fix, it\'s important to know and upgrade) and when major events happen to the project. Only a few emails a year.'|@translate|@htmlspecialchars|@nl2br}">{'Subscribe %s to Piwigo Announcements Newsletter'|@translate:$EMAIL}</a> <a href="#" class="newsletter-hide">{'... or hide this link'|translate}</a></span>
 {/if}
-</p>
+</p>
\ No newline at end of file
diff --git a/admin/themes/default/theme.css b/admin/themes/default/theme.css
index 2647afbf9..b3429889f 100644
--- a/admin/themes/default/theme.css
+++ b/admin/themes/default/theme.css
@@ -545,14 +545,18 @@ FORM.properties SPAN.property {
 }
 
 /* Dashboard */
+.intro-page-container {
+  display: grid;
+  grid-template-columns: 41% 44%;
+}
+
 .stat-boxes {
-  text-align:left;
-  margin:40px 10px;
+  text-align:center;
 }
 
 .stat-box {
   display:inline-block;
-  width:200px;
+  width:150px;
   margin:10px 10px 40px 10px;
   color:#3b3b3b;
   text-align: center;
@@ -565,7 +569,7 @@ div.stat-box {
 .stat-box i {
   display: inline-block;
   border-radius: 50%;
-  font-size: 37px;
+  font-size: 30px;
   padding: 20px;
   margin-bottom: 15px;
 }
@@ -586,6 +590,212 @@ a.stat-box:hover {
   color:#777;
 }
 
+.intro-charts {
+  width: 48vw;
+}
+
+.chart-title {
+  font-size: 18px;
+  text-align: left;
+  font-weight: bold;
+  margin-bottom: 20px;
+  color: #3b3b3b;
+  position: relative;
+}
+
+.chart-title-infos {
+  font-size: 14px;
+  position: absolute;
+  right: 0;
+  bottom: 0;
+}
+
+.activity-chart {
+  font-weight: bold;
+  font-size: 14px;
+  display: grid;
+  grid-template-columns: repeat(8, 6vw) ;
+  grid-template-rows: repeat(4, 6vw);
+}
+
+.activity-chart .row-legend,.activity-chart .col-legend {
+  position: relative;
+}
+
+.activity-chart .row-legend {
+  display: flex;
+}
+
+.activity-chart .row-legend div{
+  margin: auto;
+}
+
+.activity-chart .col-legend {
+  line-height: 6vw;
+}
+
+.activity-chart .row-legend:after {
+  content: "";
+  border-top: 2px solid black;
+  opacity: 0.05;
+  position: absolute;
+  width: 700%;
+  transform: translate(6vw,3vw);
+}
+
+.activity-chart .col-legend .line-vertical {
+  border-left: 2px solid black;
+  opacity: 0.05;
+  position: absolute;
+  height: 250%;
+  left: 50%;
+  bottom: 100%;
+}
+
+.activity-chart span {
+  display: flex;
+  overflow: visible;
+  position: relative;
+}
+
+.activity-chart span div{
+  height: 0px;
+  width: 0px;
+  background-color: #ff5252;
+  opacity: 0.8;
+  display: block;
+  border-radius: 100%;
+  z-index: 100;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+}
+
+.activity-chart span p {
+  position: absolute;
+  display: none;
+  opacity: 0;
+  z-index: 102;
+  font-size: 12px;
+  font-weight: normal;
+  background-color: white;
+  padding: 5px;
+  width: 150px;
+  box-shadow: 0px 0px 5px #acacac;
+  border-radius: 5px;
+  transform : translate(-50%, 5vw);
+  transition: ease 0.2s;
+  left: 50%;
+}
+
+.activity-chart span p::after {
+  content: " ";
+  position: absolute;
+  bottom: 100%; /* At the bottom of the tooltip */
+  left: 51%;
+  margin-left: -5px;
+  border-width: 5px;
+  border-style: solid;
+  border-color: transparent transparent white transparent;
+}
+
+.activity-chart span div:hover{
+  padding: 0.5vw;
+}
+
+.activity-chart span div:hover + p{
+  display: block;
+  opacity: 1;
+}
+
+.activity-chart #week-1-legend ~ span div {
+  background-color: #2883c3;
+}
+
+.activity-chart #week-2-legend ~ span div {
+  background-color: #896af3 ;
+}
+
+.activity-chart #week-3-legend ~ span div {
+  background-color: #6ece5e ;
+}
+
+.activity-chart #week-4-legend ~ span div {
+  background-color: #ffa744 ;
+}
+
+.storage-chart {
+  border-radius: 5px;
+  width: 100%;
+  overflow: hidden;
+  position: relative;
+  height: 30px;
+  display: flex;
+  background-color: #e8e8e8;
+}
+
+.storage-chart span{
+  opacity: 0.7;
+  transition: ease 0.2s;
+}
+
+.storage-chart span p{
+  font-weight: bold;
+  font-size: 16px;
+  color: black;
+  opacity: 0;
+  line-height: 0;
+  transition: ease 0.2s;
+}
+
+.storage-chart span:hover{
+  opacity: 1;
+}
+
+.storage-chart span:hover p{
+  opacity: 0.4;
+}
+
+.storage-chart-legend {
+  display: flex
+}
+
+.storage-chart-legend div{
+  padding: 10px;
+  display: flex;
+  align-items: center;
+  font-size: 14px;
+}
+
+.storage-chart-legend div span{
+  width: 15px;
+  height: 15px;
+  display: block;
+  margin: 5px;
+  opacity: 0.7;
+}
+
+.storage-chart span:nth-child(1), .storage-chart-legend div:nth-child(1) span{
+  background-color:#ffa744;
+}
+
+.storage-chart span:nth-child(2), .storage-chart-legend div:nth-child(2) span{
+  background-color:#6ece5e;
+}
+
+.storage-chart span:nth-child(3), .storage-chart-legend div:nth-child(3) span{
+  background-color:#896af3;
+}
+
+.storage-chart span:nth-child(4), .storage-chart-legend div:nth-child(4) span{
+  background-color:#2883c3;
+}
+
+.storage-chart span:nth-child(5), .storage-chart-legend div:nth-child(5) span{
+  background-color:#ff5252;
+}
+
 #configContent fieldset {
   border:none;
   padding-left:20px;
diff --git a/admin/themes/roma/theme.css b/admin/themes/roma/theme.css
index ec75ed5d7..1f61b6d38 100644
--- a/admin/themes/roma/theme.css
+++ b/admin/themes/roma/theme.css
@@ -232,6 +232,19 @@ a.stat-box:hover {
   background-color: #555
 }
 
+.chart-title {
+  color: #777;
+}
+
+.activity-chart span p {
+  background-color: #333333;
+  box-shadow: none;
+}
+
+.activity-chart span p::after {
+  border-color: transparent transparent #333333 transparent;
+}
+
 /* hacks */
 * html[lang="en"] body .content h2 , *+html[lang="en"] body .content h2 { text-transform:capitalize; } /* IE */
 *+html  .bigtext { left: 70px; }
@@ -876,4 +889,4 @@ li.plupload_delete a:hover {background: url("images/cancelhover.svg")!important;
 .icon-green {
   background-color: #4ac641;
   color: #014400;
-}
\ No newline at end of file
+}