diff --git a/Libs/ModelSerializers/AbstractSerializer.php b/Libs/ModelSerializers/AbstractSerializer.php
index 821cdf40..0e2888ae 100644
--- a/Libs/ModelSerializers/AbstractSerializer.php
+++ b/Libs/ModelSerializers/AbstractSerializer.php
@@ -1,5 +1,4 @@
 <?php namespace Libs\ModelSerializers;
-
 /**
  * Copyright 2016 OpenStack Foundation
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,11 +11,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-
 use libs\utils\JsonUtils;
 use models\oauth2\IResourceServerContext;
 use models\utils\IEntity;
-
 /**
  * Class AbstractSerializer
  * @package Libs\ModelSerializers
@@ -188,6 +185,9 @@ abstract class AbstractSerializer implements IModelSerializer
                         {
                             $value = JsonUtils::toObfuscatedEmail($value);
                         }
+                        case 'json_url':{
+                            $value = JsonUtils::encodeUrl($value);
+                        }
                         break;
                     }
                 }
diff --git a/Libs/Utils/JsonUtils.php b/Libs/Utils/JsonUtils.php
index 5bb40a27..57fb1544 100644
--- a/Libs/Utils/JsonUtils.php
+++ b/Libs/Utils/JsonUtils.php
@@ -44,6 +44,20 @@ abstract class JsonUtils
         return $obfuscated_email;
     }
 
+    /**
+     * @param string $url
+     * @return string
+     */
+    public static function encodeUrl(string $url):string{
+        $url= rawurlencode($url);
+        $url = str_replace("%3A",":", $url);
+        $url = str_replace("%2F","/", $url);
+        $url = str_replace("%3D","=", $url);
+        $url = str_replace("%3F","?", $url);
+        $url = str_replace("%26","&", $url);
+        return $url;
+    }
+
     /**
      * @param string $value
      * @return bool
diff --git a/app/ModelSerializers/AbstractMemberSerializer.php b/app/ModelSerializers/AbstractMemberSerializer.php
index 5ea91aa5..dd1408c3 100644
--- a/app/ModelSerializers/AbstractMemberSerializer.php
+++ b/app/ModelSerializers/AbstractMemberSerializer.php
@@ -35,6 +35,7 @@ class AbstractMemberSerializer extends SilverStripeSerializer
         'Country'         => 'country:json_string',
         'Active'          => 'active:json_boolean',
         'EmailVerified'   => 'email_verified:json_boolean',
+        'ProfilePhotoUrl' => 'pic:json_url',
     ];
 
     protected static $allowed_relations = [
@@ -57,8 +58,7 @@ class AbstractMemberSerializer extends SilverStripeSerializer
 
         if(!count($relations)) $relations = $this->getAllowedRelations();
 
-        $values           = parent::serialize($expand, $fields, $relations, $params);
-        $values['pic']    = $member->getProfilePhotoUrl();
+        $values = parent::serialize($expand, $fields, $relations, $params);
 
         if(in_array('groups', $relations))
             $values['groups'] = $member->getGroupsIds();
diff --git a/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php b/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
index 7e5b9047..1f30b709 100644
--- a/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
+++ b/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
@@ -21,21 +21,22 @@ use models\summit\PresentationSpeaker;
 class PresentationSpeakerSerializer extends SilverStripeSerializer
 {
     protected static $array_mappings = [
-        'FirstName'             => 'first_name:json_string',
-        'LastName'              => 'last_name:json_string',
-        'Title'                 => 'title:json_string',
-        'Bio'                   => 'bio:json_string',
-        'IRCHandle'             => 'irc:json_string',
-        'TwitterName'           => 'twitter:json_string',
-        'OrgHasCloud'           => 'org_has_cloud:json_boolean',
-        'Country'               => 'country:json_string',
-        'AvailableForBureau'    => 'available_for_bureau:json_boolean',
-        'FundedTravel'          => 'funded_travel:json_boolean',
-        'WillingToTravel'       => 'willing_to_travel:json_boolean',
-        'WillingToPresentVideo' => 'willing_to_present_video:json_boolean',
+        'FirstName'               => 'first_name:json_string',
+        'LastName'                => 'last_name:json_string',
+        'Title'                   => 'title:json_string',
+        'Bio'                     => 'bio:json_string',
+        'IRCHandle'               => 'irc:json_string',
+        'TwitterName'             => 'twitter:json_string',
+        'OrgHasCloud'             => 'org_has_cloud:json_boolean',
+        'Country'                 => 'country:json_string',
+        'AvailableForBureau'      => 'available_for_bureau:json_boolean',
+        'FundedTravel'            => 'funded_travel:json_boolean',
+        'WillingToTravel'         => 'willing_to_travel:json_boolean',
+        'WillingToPresentVideo'   => 'willing_to_present_video:json_boolean',
         'Email'                   => 'email:json_obfuscated_email',
         'MemberID'                => 'member_id:json_int',
-        'RegistrationRequestId'   => 'registration_request_id:json_int'
+        'RegistrationRequestId'   => 'registration_request_id:json_int',
+        'ProfilePhotoUrl'         => 'pic:json_url'
     ];
 
     protected static $allowed_relations = [
@@ -64,8 +65,6 @@ class PresentationSpeakerSerializer extends SilverStripeSerializer
             $values['moderated_presentations'] = $speaker->getModeratedPresentationIds($summit_id, $published);
         }
 
-        $values['pic'] = $speaker->getProfilePhotoUrl();
-
         if (in_array('member', $relations) && $speaker->hasMember())
         {
             $member              = $speaker->getMember();