diff --git a/inc/admin.php b/inc/admin.php
index 9541cb5..6daef1f 100644
--- a/inc/admin.php
+++ b/inc/admin.php
@@ -14,7 +14,7 @@ if (isset($ui['log']) && !in_array($ui['log'], $acceptParam['log']) || $_SESSION
   die('Tell me, Mr Anderson, what good is a phone call if you\'re unable to speak ?');
 }
 
-if (empty($ui['log'])) {
+if (empty($ui['log']) && empty($ui['ac'])) {
   $ui['log'] = 'success';
 }
 
@@ -123,8 +123,16 @@ function keepThisThumb($hash, $log) {
 if (isset($ui['clear']) && (int)$ui['clear'] === 1) {
   clearLog($ui['log']);
 }
-?>
-<div class="hMenu">
+if (isset($ui['ac']) && $ui['ac'] === 'delete' && isset($ui['thumb']) && !empty($ui['thumb'])) {
+  $imgUrl = pathForFile('m', $ui['thumb']);
+  if (file_exists($_SERVER['DOCUMENT_ROOT'].'/'.$imgUrl.'.png')) {
+    unlink($_SERVER['DOCUMENT_ROOT'].'/'.$imgUrl.'.png');
+  }
+  if (file_exists($imgUrl.'_thumb.png')) {
+    unlink($_SERVER['DOCUMENT_ROOT'].'/'.$imgUrl.'_thumb.png');
+  }
+}
+echo '<div class="hMenu">
   <ul>
     <li>
       <a href="?p=admin&log=success">Success</a>
@@ -138,14 +146,52 @@ if (isset($ui['clear']) && (int)$ui['clear'] === 1) {
     <li>
       <a href="?p=admin&log=other">Other error</a>
     </li>
+    <li>
+      <a href="?p=admin&ac=delete">Delete thumbshot</a>
+    </li>
     <li>
       <a href="?logout=1">Logout</a>
     </li>
   </ul>
 </div>
-<div id="log">
-<?php
-if ($ui['log'] === 'success') {
+<div id="log">';
+if ($ui['ac'] === 'delete') {
+  if (isset($ui['deleteUrl']) && testValidUrl($ui['deleteUrl']) !== true) {
+    unset($ui['deleteUrl']);
+    echo '<div>Not a valid url.</div>';
+  }
+  echo '
+  <form method="post" action="?">
+    <p>
+      <label>Url </label>';
+  if (empty($ui['deleteUrl'])) {
+    echo '<input type="text" name="deleteUrl"/>';
+  } else {
+    echo '<input type="text" name="deleteUrl" value="', $ui['deleteUrl'], '"/>';
+  }
+  echo '</p>
+    <p>
+      <input type="hidden" name="p" value="admin"/>
+      <input type="hidden" name="ac" value="delete"/>
+      <input type="submit"/>
+    </p>
+  </form>';
+  if (!empty($ui['deleteUrl'])) {
+    $ui['deleteUrl'] = trim(rawurldecode($ui['deleteUrl']));
+    $ui['deleteUrl'] = rtrim($ui['deleteUrl'], '/');
+    $hashUrl = sha1($GLOBALS['config']['salt'].$ui['deleteUrl']);
+    $imgUrl = pathForFile('m', $hashUrl);
+    echo '</div>
+    <div id="result">
+      <p>
+        <a href="', $imgUrl, '.png"><img src="', $imgUrl, '_thumb.png"/></a>
+      </p>
+      <a href="?p=admin&amp;ac=delete&amp;thumb=', $hashUrl, '">Delete this thumb</a>
+    </div>';
+  }
+
+}
+if (isset($ui['log']) && $ui['log'] === 'success') {
   $logs = parseSuccessLog();
   if (!empty($logs)) {
     $nbThumb = 0;
@@ -157,7 +203,7 @@ if ($ui['log'] === 'success') {
   }
   echo '<p class="clear" ><a href="?p=admin&log=success&clear=1">Clear success log</a></p>';
 }
-if ($ui['log'] === 'suspect' || $ui['log'] === 'retry' || $ui['log'] === 'other') {
+if (isset($ui['log']) && ($ui['log'] === 'suspect' || $ui['log'] === 'retry' || $ui['log'] === 'other')) {
   if (isset($ui['hash']) && !empty($ui['hash'])) {
     $ui['hash'] = validHash($ui['hash']);
     if (isset($ui['root']) && (int)$ui['root'] === 1) {
@@ -165,6 +211,9 @@ if ($ui['log'] === 'suspect' || $ui['log'] === 'retry' || $ui['log'] === 'other'
     }
     if (isset($ui['cache']) && (int)$ui['cache'] === 1) {
       $success['filePath'] = pathForFile($ui['s'], $ui['hash']).'.png';
+      if (!file_exists($success['filePath'])) {
+        $success['filePath'] = 'data:image/png;base64,'.base64_encode(file_get_contents('bin/error.png'));
+      }
     }
     if (isset($ui['keep']) && (int)$ui['keep'] === 1) {
       keepThisThumb($ui['hash'], $ui['log']);
@@ -176,7 +225,7 @@ if ($ui['log'] === 'suspect' || $ui['log'] === 'retry' || $ui['log'] === 'other'
   if (!empty($logs)) {
     echo '<ul>';
     foreach ($logs as $value) {
-      echo '<li>',  htmlentities(strip_tags($value['3'])), htmlentities(strip_tags($value['0'])), '</br><a href="?p=admin&log=', $ui['log'], '&hash=', $value['1'], '&mGen=1#result">manuel launch</a> <a href="', htmlentities(strip_tags($value['0'])), '">view site</a> <a href="?p=admin&log=', $ui['log'], '&hash=', $value['1'], '&cache=1&s=', $value['2'], '#result">view image in cache</a></li>';
+      echo '<li>',     htmlentities(strip_tags($value['3'])),     htmlentities(strip_tags($value['0'])), '</br><a href="?p=admin&log=', $ui['log'], '&hash=', $value['1'], '&mGen=1#result">manuel launch</a> <a href="',     htmlentities(strip_tags($value['0'])), '">view site</a> <a href="?p=admin&log=', $ui['log'], '&hash=', $value['1'], '&cache=1&s=', $value['2'], '#result">view image in cache</a></li>';
     }
     echo '</ul>';
   } else {
@@ -184,10 +233,9 @@ if ($ui['log'] === 'suspect' || $ui['log'] === 'retry' || $ui['log'] === 'other'
   }
 }
 echo '</div>';
-
 if (!empty($success)) {
   echo '<div id="result">';
-  echo '<img src="', $success['filePath'], '?r=',     time(), '" style="width:100%;"/>';
+  echo '<img src="', $success['filePath'], '?r=', time(), '" style="width:100%;"/>';
   echo '<p><input type="text" value="http://', $_SERVER['SERVER_NAME'], '/', $success['filePath'], '" onclick="this.select()"/></p>';
   echo '<a href="?p=admin&log=', $ui['log'], '&hash=', $ui['hash'], '&root=1">Try with root domain</a> / ';
   echo '<a href="?p=admin&log=', $ui['log'], '&hash=', $ui['hash'], '&keep=1">Keep this thumbshot</a>';
diff --git a/index.php b/index.php
index 5ed1790..6dd6b0d 100644
--- a/index.php
+++ b/index.php
@@ -181,7 +181,7 @@ function testValidUrl($url) {
     }
     return true;
   } else {
-    return array('msg' => 'Url are not valid.');
+    return array('msg' => 'Not a valid url.');
   }
 }
 
diff --git a/style.css b/style.css
index 1546d98..c88d123 100644
--- a/style.css
+++ b/style.css
@@ -22,7 +22,7 @@ a:visited {
 form, #result, #header, .message, .hMenu, #log {
   padding: 1em;
   text-align: center;
-  width: 50%;
+  width: 60%;
   margin: 1em auto;
   background-color: #ffffff;
   border-radius: 5px;