diff --git a/src/application/controller/api/image.php b/src/application/controller/api/image.php
new file mode 100755
index 0000000..6c6ee38
--- /dev/null
+++ b/src/application/controller/api/image.php
@@ -0,0 +1,9 @@
+<?php
+
+if (isset($_GET['hash'])) {
+
+  $icon = new Icon();
+
+  header("Content-Type: image/jpeg");
+  echo  $icon->generateImageResource(md5($_GET['hash']), 26, 36, false);
+}
diff --git a/src/bootstrap.php b/src/bootstrap.php
index fc65934..6ba1c7c 100644
--- a/src/bootstrap.php
+++ b/src/bootstrap.php
@@ -9,6 +9,7 @@ require(PROJECT_DIR . '/application/model/user.php');
 
 require(PROJECT_DIR . '/system/curl.php');
 require(PROJECT_DIR . '/system/twister.php');
+require(PROJECT_DIR . '/system/icon.php');
 require(PROJECT_DIR . '/system/helper/filter.php');
 require(PROJECT_DIR . '/system/helper/valid.php');
 
@@ -65,8 +66,8 @@ if (isset($_GET['_route_'])) {
       case 'register':
         require(PROJECT_DIR . '/application/controller/register.php');
       break;
-      case 'api/user':
-        require(PROJECT_DIR . '/application/controller/api/user.php');
+      case 'api/image':
+        require(PROJECT_DIR . '/application/controller/api/image.php');
       break;
       default:
         require(PROJECT_DIR . '/application/controller/error/404.php');
diff --git a/src/system/icon.php b/src/system/icon.php
new file mode 100755
index 0000000..aee6941
--- /dev/null
+++ b/src/system/icon.php
@@ -0,0 +1,209 @@
+<?php
+
+final class Icon {
+
+  private $_width;
+
+  private $_height;
+
+  private $_hash;
+
+  private $_spriteZ = 800;
+
+  public function generateImageResource($hash, $width, $height, $filter = false) {
+
+    $this->_width  = $width;
+    $this->_height = $height;
+    $this->_hash   = $hash;
+
+    $csh = hexdec(substr($this->_hash, 0, 1)); // corner sprite shape
+    $ssh = hexdec(substr($this->_hash, 1, 1)); // side sprite shape
+    $xsh = hexdec(substr($this->_hash, 2, 1)) & 7; // center sprite shape
+
+    $cro = hexdec(substr($this->_hash, 3, 1)) & 3; // corner sprite rotation
+    $sro = hexdec(substr($this->_hash, 4, 1)) & 3; // side sprite rotation
+    $xbg = hexdec(substr($this->_hash, 5, 1)) % 2; // center sprite background
+
+    $cfr = hexdec(substr($this->_hash, 6, 2));
+    $cfg = hexdec(substr($this->_hash, 8, 2));
+    $cfb = hexdec(substr($this->_hash, 10, 2));
+
+    $sfr = hexdec(substr($this->_hash, 12, 2));
+    $sfg = hexdec(substr($this->_hash, 14, 2));
+    $sfb = hexdec(substr($this->_hash, 16, 2));
+
+    $identicon = imagecreatetruecolor($this->_spriteZ * 3, $this->_spriteZ * 3);
+    if (function_exists('imageantialias')) {
+      imageantialias($identicon, TRUE);
+    }
+
+    $bg = imagecolorallocate($identicon, 255, 255, 255);
+    imagefilledrectangle($identicon, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
+
+    $corner = $this->_getSprite($csh, $cfr, $cfg, $cfb, $cro);
+    imagecopy($identicon, $corner, 0, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $corner = imagerotate($corner, 90, $bg);
+    imagecopy($identicon, $corner, 0, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $corner = imagerotate($corner, 90, $bg);
+    imagecopy($identicon, $corner, $this->_spriteZ * 2, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $corner = imagerotate($corner, 90, $bg);
+    imagecopy($identicon, $corner, $this->_spriteZ * 2, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
+
+    $side = $this->_getSprite($ssh, $sfr, $sfg, $sfb, $sro);
+    imagecopy($identicon, $side, $this->_spriteZ, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $side = imagerotate($side, 90, $bg);
+    imagecopy($identicon, $side, 0, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $side = imagerotate($side, 90, $bg);
+    imagecopy($identicon, $side, $this->_spriteZ, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
+    $side = imagerotate($side, 90, $bg);
+    imagecopy($identicon, $side, $this->_spriteZ * 2, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
+
+    $center = $this->_getCenter($xsh, $cfr, $cfg, $cfb, $sfr, $sfg, $sfb, $xbg);
+    imagecopy($identicon, $center, $this->_spriteZ, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
+
+    imagecolortransparent($identicon, $bg);
+
+    $resized = imagecreatetruecolor($this->_width, $this->_height);
+    if (function_exists('imageantialias')) {
+      imageantialias($resized, TRUE);
+    }
+
+    $bg = imagecolorallocate($resized, 255, 255, 255);
+
+    imagefilledrectangle($resized, 0, 0, $this->_width, $this->_height, $bg);
+
+    imagecopyresampled($resized, $identicon, 0, 0, (imagesx($identicon) - $this->_spriteZ * 3) / 2, (imagesx($identicon) - $this->_spriteZ * 3) / 2, $this->_width, $this->_height, $this->_spriteZ * 3, $this->_spriteZ * 3);
+
+    imagecolortransparent($resized, $bg);
+
+    if ($filter) {
+      imagefilter($resized, $filter);
+    }
+
+    ob_start();
+    imagejpeg($resized, null, 100);
+    imagedestroy($resized);
+    return ob_get_clean();
+  }
+
+  private function _getSprite($shape, $R, $G, $B, $rotation) {
+
+    $sprite = imagecreatetruecolor($this->_spriteZ, $this->_spriteZ);
+
+    if (function_exists('imageantialias')) {
+      imageantialias($sprite, TRUE);
+    }
+
+    $fg = imagecolorallocate($sprite, $R, $G, $B);
+    $bg = imagecolorallocate($sprite, 255, 255, 255);
+
+    imagefilledrectangle($sprite, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
+
+    switch ($shape) {
+      case 0: // triangle
+        $shape = array(0.5, 1, 1, 0, 1, 1);
+        break;
+      case 1: // parallelogram
+        $shape = array(0.5, 0, 1, 0, 0.5, 1, 0, 1);
+        break;
+      case 2: // mouse ears
+        $shape = array(0.5, 0, 1, 0, 1, 1, 0.5, 1, 1, 0.5);
+        break;
+      case 3: // ribbon
+        $shape = array(0, 0.5, 0.5, 0, 1, 0.5, 0.5, 1, 0.5, 0.5);
+        break;
+      case 4: // sails
+        $shape = array(0, 0.5, 1, 0, 1, 1, 0, 1, 1, 0.5);
+        break;
+      case 5: // fins
+        $shape = array(1, 0, 1, 1, 0.5, 1, 1, 0.5, 0.5, 0.5);
+        break;
+      case 6: // beak
+        $shape = array(0, 0, 1, 0, 1, 0.5, 0, 0, 0.5, 1, 0, 1);
+        break;
+      case 7: // chevron
+        $shape = array(0, 0, 0.5, 0, 1, 0.5, 0.5, 1, 0, 1, 0.5, 0.5);
+        break;
+      case 8: // fish
+        $shape = array(0.5, 0, 0.5, 0.5, 1, 0.5, 1, 1, 0.5, 1, 0.5, 0.5, 0, 0.5);
+        break;
+      case 9: // kite
+        $shape = array(0, 0, 1, 0, 0.5, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
+        break;
+      case 10: // trough
+        $shape = array(0, 0.5, 0.5, 1, 1, 0.5, 0.5, 0, 1, 0, 1, 1, 0, 1);
+        break;
+      case 11: // rays
+        $shape = array(0.5, 0, 1, 0, 1, 1, 0.5, 1, 1, 0.75, 0.5, 0.5, 1, 0.25);
+        break;
+      case 12: // double rhombus
+        $shape = array(0, 0.5, 0.5, 0, 0.5, 0.5, 1, 0, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
+        break;
+      case 13: // crown
+        $shape = array(0, 0, 1, 0, 1, 1, 0, 1, 1, 0.5, 0.5, 0.25, 0.5, 0.75, 0, 0.5, 0.5, 0.25);
+        break;
+      case 14: // radioactive
+        $shape = array(0, 0.5, 0.5, 0.5, 0.5, 0, 1, 0, 0.5, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
+        break;
+      default: // tiles
+        $shape = array(0, 0, 1, 0, 0.5, 0.5, 0.5, 0, 0, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
+        break;
+    }
+
+    for ($i = 0; $i < count($shape); $i++)
+      $shape[$i] = $shape[$i] * $this->_spriteZ;
+    imagefilledpolygon($sprite, $shape, count($shape) / 2, $fg);
+
+    for ($i = 0; $i < $rotation; $i++)
+      $sprite = imagerotate($sprite, 90, $bg);
+
+    return $sprite;
+  }
+
+  private function _getCenter($shape, $fR, $fG, $fB, $bR, $bG, $bB, $usebg) {
+    $sprite = imagecreatetruecolor($this->_spriteZ, $this->_spriteZ);
+    if (function_exists('imageantialias')) {
+      imageantialias($sprite, TRUE);
+    }
+    $fg = imagecolorallocate($sprite, $fR, $fG, $fB);
+
+    if ($usebg > 0 && (abs($fR - $bR) > 127 || abs($fG - $bG) > 127 || abs($fB - $bB) > 127))
+      $bg = imagecolorallocate($sprite, $bR, $bG, $bB); else
+      $bg = imagecolorallocate($sprite, 255, 255, 255);
+    imagefilledrectangle($sprite, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
+
+    switch ($shape) {
+      case 0: // empty
+        $shape = array();
+        break;
+      case 1: // fill
+        $shape = array(0, 0, 1, 0, 1, 1, 0, 1);
+        break;
+      case 2: // diamond
+        $shape = array(0.5, 0, 1, 0.5, 0.5, 1, 0, 0.5);
+        break;
+      case 3: // reverse diamond
+        $shape = array(0, 0, 1, 0, 1, 1, 0, 1, 0, 0.5, 0.5, 1, 1, 0.5, 0.5, 0, 0, 0.5);
+        break;
+      case 4: // cross
+        $shape = array(0.25, 0, 0.75, 0, 0.5, 0.5, 1, 0.25, 1, 0.75, 0.5, 0.5, 0.75, 1, 0.25, 1, 0.5, 0.5, 0, 0.75, 0, 0.25, 0.5, 0.5);
+        break;
+      case 5: // morning star
+        $shape = array(0, 0, 0.5, 0.25, 1, 0, 0.75, 0.5, 1, 1, 0.5, 0.75, 0, 1, 0.25, 0.5);
+        break;
+      case 6: // small square
+        $shape = array(0.33, 0.33, 0.67, 0.33, 0.67, 0.67, 0.33, 0.67);
+        break;
+      case 7: // checkerboard
+        $shape = array(0, 0, 0.33, 0, 0.33, 0.33, 0.66, 0.33, 0.67, 0, 1, 0, 1, 0.33, 0.67, 0.33, 0.67, 0.67, 1, 0.67, 1, 1, 0.67, 1, 0.67, 0.67, 0.33, 0.67, 0.33, 1, 0, 1, 0, 0.67, 0.33, 0.67, 0.33, 0.33, 0, 0.33);
+        break;
+    }
+
+    for ($i = 0; $i < count($shape); $i++)
+      $shape[$i] = $shape[$i] * $this->_spriteZ;
+    if (count($shape) > 0)
+      imagefilledpolygon($sprite, $shape, count($shape) / 2, $fg);
+
+    return $sprite;
+  }
+}