diff --git a/openslides/agenda/static/styles/agenda.css b/openslides/agenda/static/styles/agenda.css
index 760e57598..7c3700e9e 100644
--- a/openslides/agenda/static/styles/agenda.css
+++ b/openslides/agenda/static/styles/agenda.css
@@ -1,6 +1,6 @@
 /* agenda item open/closed */
 a.close_link span {
-    background-image: url(../images/icons/task-complete-grey.png);
+    background-image: url(../images/icons/done-grey.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
@@ -8,5 +8,5 @@ a.close_link span {
     display: inline-block;
 }
 a.close_link.closed span {
-    background-image: url(../images/icons/task-complete.png);
+    background-image: url(../images/icons/done.png);
 }
diff --git a/openslides/agenda/templates/agenda/item_row.html b/openslides/agenda/templates/agenda/item_row.html
index fa871aad3..eebe20c86 100644
--- a/openslides/agenda/templates/agenda/item_row.html
+++ b/openslides/agenda/templates/agenda/item_row.html
@@ -7,7 +7,7 @@
                 <span></span>
             </a>
         {% elif item.closed %}
-                <img src="{% static 'images/icons/task-complete.png' %}" title="{% trans 'Item closed' %}">
+                <img src="{% static 'images/icons/done.png' %}" title="{% trans 'Item closed' %}">
         {% endif %}
     </td>
     <td>
@@ -29,7 +29,7 @@
         {% endif %}
         {% if perms.agenda.can_manage_agenda %}
             <a href="{% url item_edit item.id %}"><img src="{% static 'images/icons/edit.png' %}" title="{% trans 'Edit item' %}"></a>
-            <a href="{% url item_delete item.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{% trans 'Delete item' %}"></a>
+            <a href="{% url item_delete item.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{% trans 'Delete item' %}"></a>
         {% endif %}
         </span>
     </td>
diff --git a/openslides/application/templates/application/base_application.html b/openslides/application/templates/application/base_application.html
index 67fc2caa3..dac22d596 100644
--- a/openslides/application/templates/application/base_application.html
+++ b/openslides/application/templates/application/base_application.html
@@ -45,9 +45,9 @@
             <li><a href="{% url print_application application.id  %}"><img src="{% static 'images/icons/pdf.png' %}"> {%trans 'Application as PDF' %}</a></li>
         {# activate and polls #}
             {% if perms.projector.can_manage_projector %}
-                <li><a href="{% url projector_activate_slide application.sid  %}"><img src="{% static 'images/icons/video-projector.png' %}"> {%trans 'Show Application' %}</a></li>
+                <li><a href="{% url projector_activate_slide application.sid  %}"><img src="{% static 'images/icons/projector.png' %}"> {%trans 'Show Application' %}</a></li>
                 {% if "genpoll" in actions %}
-                <li><a href='{% url application_gen_poll application.id %}'><img src="{% static 'images/icons/view-statistics.png' %}"> {%trans 'New vote' %}</a></li>
+                <li><a href='{% url application_gen_poll application.id %}'><img src="{% static 'images/icons/statistics.png' %}"> {%trans 'New vote' %}</a></li>
                 {% endif %}
                 {% for poll in application.polls %}
                     {% url application_poll_view poll.id as url_applicationpollview %}
diff --git a/openslides/application/templates/application/overview.html b/openslides/application/templates/application/overview.html
index 3922542f4..b485b38f8 100644
--- a/openslides/application/templates/application/overview.html
+++ b/openslides/application/templates/application/overview.html
@@ -68,8 +68,8 @@
                     </a>
                 {% endif %}
                 {% if perms.application.can_manage_application %}
-                    <a href="{% url application_edit application.id %}"><img src="{% static 'images/icons/document-edit.png' %}" title="{% trans 'Edit application' %}"></a>
-                    <a href="#"><img src="{% static 'images/icons/edit-delete.png' %}" title="{% trans 'Delete application' %}"></a>
+                    <a href="{% url application_edit application.id %}"><img src="{% static 'images/icons/edit.png' %}" title="{% trans 'Edit application' %}"></a>
+                    <a href="#"><img src="{% static 'images/icons/delete.png' %}" title="{% trans 'Delete application' %}"></a>
                 {% endif %}
                 <a href="{% url print_application application.id  %}" title="{%trans 'Application as PDF' %}"><img src="{% static 'pdf.png' %}"></a>
                 </span>
diff --git a/openslides/application/templates/application/view.html b/openslides/application/templates/application/view.html
index 575d002e4..f296ca7dc 100644
--- a/openslides/application/templates/application/view.html
+++ b/openslides/application/templates/application/view.html
@@ -50,7 +50,7 @@
             {% if perms.application.can_manage_application %}
                 {% if "genpoll" in actions %}
                 <a href='{% url application_gen_poll application.id %}'>
-                    <span class="button"><span class="icon poll">{%trans 'New vote' %}</span></span>
+                    <span class="button"><span class="icon statistics">{%trans 'New vote' %}</span></span>
                 </a>
                 {% else %}
                 -
@@ -68,7 +68,7 @@
                         <b>{{ forloop.counter }}. {% trans "Vote" %}:</b>
                     </a>
                     <a href="{% url application_poll_delete poll.id %}">
-                        <img src="{% static 'images/icons/edit-delete.png' %}" title="{% trans 'Delete Vote' %}">
+                        <img src="{% static 'images/icons/delete.png' %}" title="{% trans 'Delete Vote' %}">
                     </a>
                 {% elif poll.has_votes %}
                     <b>{{ forloop.counter }}. {% trans "Vote" %}:</b>
@@ -88,7 +88,7 @@
                         {% if forloop.last %}
                         {% if "genpoll" in actions %}
                         <a href='{% url application_gen_poll application.id %}'>
-                            <span class="button"><span class="icon poll">{%trans 'New vote' %}</span></span>
+                            <span class="button"><span class="icon statistics">{%trans 'New vote' %}</span></span>
                         </a>
                         {% endif %}
                         {% endif %}
@@ -149,7 +149,7 @@
         <a href='{% url application_permit application.id %}'><span class="button"><span class="icon ok-blue">{% trans 'Permit' %}</span></span></a>
         {% endif %}
         {% if "nop" in actions %}
-        <a href='{% url application_notpermit application.id %}'><span class="button"><span class="icon stop">{% trans 'Not permit (reject)' %}</span></span></a>
+        <a href='{% url application_notpermit application.id %}'><span class="button"><span class="icon reject">{% trans 'Not permit (reject)' %}</span></span></a>
         {% endif %}
         {% if "setnumber" in actions %}
         <a href='{% url application_set_number application.id %}'><span class="button"><span class="icon number">{% trans 'Set Number' %}</span></span></a>
@@ -162,7 +162,7 @@
         <h4>{% trans "Result after vote" %}:</h4>
         {% if "acc" in actions %}
         <a href='{% url application_set_status application.id 'acc' %}'>
-            <span class="button"><span class="icon accept">{%trans 'Accepted' %}</span></span>
+            <span class="button"><span class="icon done">{%trans 'Accepted' %}</span></span>
         </a>
         {% endif %}
         {% if "rej" in actions %}
@@ -250,17 +250,17 @@
         <td style="white-space:nowrap;">
         {% if application.status != "pub" %}
         {% if revision == application.permitted %}
-             <img title="{%trans 'Version accepted' %}" src="{% static 'images/icons/task-accepted.png' %}">
+             <img title="{%trans 'Version accepted' %}" src="{% static 'images/icons/accept.png' %}">
         {% else %}
              {% if perms.application.can_manage_application %}
-                 <a href="{% url application_version_permit revision.id %}"><img title="{%trans 'Accept Version' %}" src="{% static 'images/icons/task-accepted-grey.png' %}"></a>
+                 <a href="{% url application_version_permit revision.id %}"><img title="{%trans 'Accept Version' %}" src="{% static 'images/icons/accept-grey.png' %}"></a>
              {% endif %}
              {% if not revision.rejected and revision.id > application.permitted.id and perms.application.can_manage_application %}
-                 <a href="{% url application_version_reject revision.id %}"><img title="{%trans 'Reject Version' %}" src="{% static 'images/icons/task-reject-grey.png' %}"></a>
+                 <a href="{% url application_version_reject revision.id %}"><img title="{%trans 'Reject Version' %}" src="{% static 'images/icons/reject-grey.png' %}"></a>
              {% endif %}
         {% endif %}
         {% if revision.rejected %}
-            <img title="{%trans 'Version rejected' %}" src="{% static 'images/icons/task-reject.png' %}">
+            <img title="{%trans 'Version rejected' %}" src="{% static 'images/icons/reject.png' %}">
         {% endif %}
         {% endif %}
         </td>
diff --git a/openslides/assignment/templates/assignment/overview.html b/openslides/assignment/templates/assignment/overview.html
index 98c835876..4c59da819 100644
--- a/openslides/assignment/templates/assignment/overview.html
+++ b/openslides/assignment/templates/assignment/overview.html
@@ -40,8 +40,8 @@
                     </a>
                 {% endif %}
                 {% if perms.assignment.can_manage_assignment %}
-                    <a href="{% url assignment_edit assignment.id %}"><img src="{% static 'images/icons/document-edit.png' %}" title="{%trans 'Edit election' %}"></a>
-                    <a href="{% url assignment_delete assignment.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{%trans 'Delete election' %}"></a>
+                    <a href="{% url assignment_edit assignment.id %}"><img src="{% static 'images/icons/edit.png' %}" title="{%trans 'Edit election' %}"></a>
+                    <a href="{% url assignment_delete assignment.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{%trans 'Delete election' %}"></a>
                 {% endif %}
                 <a href="{% url print_assignment assignment.id %}" title="{% trans 'Election as PDF' %}"><img src="{% static 'images/icons/pdf.png' %}"></a>
                 </span>
diff --git a/openslides/assignment/templates/assignment/view.html b/openslides/assignment/templates/assignment/view.html
index 163161b5b..c8e736298 100644
--- a/openslides/assignment/templates/assignment/view.html
+++ b/openslides/assignment/templates/assignment/view.html
@@ -64,7 +64,7 @@
         <li>{{ profile }}
         {% if perms.assignment.can_manage_assignment %}
         {% if assignment.status == "sea" or assignment.status == "vot" %}
-        <a href="{% url assignment_delother assignment.id profile.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{% trans 'Remove candidate' %}"></a>
+        <a href="{% url assignment_delother assignment.id profile.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{% trans 'Remove candidate' %}"></a>
         {% endif %}
         {% endif %}
         </li>
@@ -101,7 +101,7 @@
             <label>{{ field.label }}:</label>
             <nobr>{{ field }}
             {% if perms.participant.can_see_participant and perms.participant.can_manage_participant %}
-            <a href="{% url user_new %}" target="_blank"><img src="{% static 'images/icons/list-add-user.png' %}" title="{% trans 'Add new participant' %}"></a>
+            <a href="{% url user_new %}" target="_blank"><img src="{% static 'images/icons/add-user.png' %}" title="{% trans 'Add new participant' %}"></a>
             {% endif %}
             </nobr>
             {% endfor %}
@@ -138,14 +138,14 @@
                     </a>
                     {% if poll.published %}
                         <a href={% url assignment_poll_notpublish poll.id %}><img
-                            src="{% static 'images/icons/user-online.png' %}"
+                            src="{% static 'images/icons/on.png' %}"
                             title="{% trans 'Unpublish results' %}"></a>
                     {% else %}
                         <a href={% url assignment_poll_publish poll.id %}><img
-                            src="{% static 'images/icons/user-offline.png' %}"
+                            src="{% static 'images/icons/off.png' %}"
                             title="{% trans 'Publish results' %}"></a>
                     {% endif %}
-                    <a href="{% url assignment_poll_delete poll.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{% trans 'Delete Poll' %}"></a>
+                    <a href="{% url assignment_poll_delete poll.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{% trans 'Delete Poll' %}"></a>
                     {% endif %}
                 </th>
             {# endif #}
@@ -154,7 +154,7 @@
             <th>
                 <a href='{% url assignment_gen_poll assignment.id %}'>
                     <span class="button">
-                       <span class="icon poll">{%trans 'New ballot' %}</span>
+                       <span class="icon statistics">{%trans 'New ballot' %}</span>
                     </span>
                 </a>
             </th>
@@ -231,7 +231,7 @@
     {% if assignment.profile.count > 0 and perms.assignment.can_manage_assignment and assignment.status == "vot" %}
         <p><a href='{% url assignment_gen_poll assignment.id %}'>
         <span class="button">
-           <span class="icon poll">{%trans 'New ballot' %}</span>
+           <span class="icon statistics">{%trans 'New ballot' %}</span>
         </span>
         </a></p>
     {% endif %}
diff --git a/openslides/locale/de/LC_MESSAGES/django.po b/openslides/locale/de/LC_MESSAGES/django.po
index 52c5429b9..4abfeaca9 100644
--- a/openslides/locale/de/LC_MESSAGES/django.po
+++ b/openslides/locale/de/LC_MESSAGES/django.po
@@ -1007,7 +1007,7 @@ msgstr "Version akzeptiert"
 
 #: application/templates/application/view.html:256
 msgid "Accept Version"
-msgstr "Zugelassene Version"
+msgstr "Version zulassen"
 
 #: application/templates/application/view.html:259
 msgid "Reject Version"
diff --git a/openslides/participant/static/styles/participant.css b/openslides/participant/static/styles/participant.css
index ae2bb0c56..3292dc417 100644
--- a/openslides/participant/static/styles/participant.css
+++ b/openslides/participant/static/styles/participant.css
@@ -1,5 +1,5 @@
 a.status_link.active span {
-    background-image: url(../images/icons/user-online.png);
+    background-image: url(../images/icons/on.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
@@ -7,7 +7,7 @@ a.status_link.active span {
     display: inline-block;
 }
 a.status_link.inactive span {
-    background-image: url(../images/icons/user-offline.png);
+    background-image: url(../images/icons/off.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
diff --git a/openslides/participant/templates/participant/group_overview.html b/openslides/participant/templates/participant/group_overview.html
index ee685aa08..e355ccc9a 100644
--- a/openslides/participant/templates/participant/group_overview.html
+++ b/openslides/participant/templates/participant/group_overview.html
@@ -15,9 +15,9 @@
     {% for group in groups %}
         <tr class="{% cycle '' 'odd' %}">
             <td>{{ group.name }}</td>
-            <td><a href="{% url user_group_edit group.id %}"><img src="{% static 'images/icons/document-edit.png' %}" title="{%trans 'Edit group' %}"></a>
+            <td><a href="{% url user_group_edit group.id %}"><img src="{% static 'images/icons/edit.png' %}" title="{%trans 'Edit group' %}"></a>
             {% if group.name != 'Anonymous' %}
-            <a href="{% url user_group_delete group.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{%trans 'Delete group' %}"></a>
+            <a href="{% url user_group_delete group.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{%trans 'Delete group' %}"></a>
             {% endif %}
             </td>
         </tr>
diff --git a/openslides/participant/templates/participant/overview.html b/openslides/participant/templates/participant/overview.html
index 0d695d69b..e13f4a4ca 100644
--- a/openslides/participant/templates/participant/overview.html
+++ b/openslides/participant/templates/participant/overview.html
@@ -85,8 +85,8 @@
                 {{ user.last_login }}
                 {% endif %}</td>
             <td><span style="width: 1px; white-space: nowrap;">
-                <a href="{% url user_edit user.id %}"><img src="{% static 'images/icons/document-edit.png' %}" title="{%trans 'Edit participant' %}"></a>
-                <a href="{% url user_delete user.id %}"><img src="{% static 'images/icons/edit-delete.png' %}" title="{%trans 'Delete participant' %}"></a>
+                <a href="{% url user_edit user.id %}"><img src="{% static 'images/icons/edit.png' %}" title="{%trans 'Edit participant' %}"></a>
+                <a href="{% url user_delete user.id %}"><img src="{% static 'images/icons/delete.png' %}" title="{%trans 'Delete participant' %}"></a>
                 <a class="status_link {% if user.is_active %}active{% else %}inactive{% endif %}"
                     href="{% if user.is_active %}{% url user_inactive user.id %}{% else %}{% url user_active user.id %}{% endif %}"
                     title="{%trans 'Change status (active/inactive)' %}">
diff --git a/openslides/projector/static/images/icons/media-playback-pause.png b/openslides/projector/static/images/icons/pause.png
similarity index 100%
rename from openslides/projector/static/images/icons/media-playback-pause.png
rename to openslides/projector/static/images/icons/pause.png
diff --git a/openslides/projector/static/images/icons/media-playback-start.png b/openslides/projector/static/images/icons/play.png
similarity index 100%
rename from openslides/projector/static/images/icons/media-playback-start.png
rename to openslides/projector/static/images/icons/play.png
diff --git a/openslides/projector/static/images/icons/media-skip-backward.png b/openslides/projector/static/images/icons/skip-backward.png
similarity index 100%
rename from openslides/projector/static/images/icons/media-skip-backward.png
rename to openslides/projector/static/images/icons/skip-backward.png
diff --git a/openslides/projector/static/images/icons/view-restore.png b/openslides/projector/static/images/icons/view-reset.png
similarity index 100%
rename from openslides/projector/static/images/icons/view-restore.png
rename to openslides/projector/static/images/icons/view-reset.png
diff --git a/openslides/projector/static/styles/projector-control.css b/openslides/projector/static/styles/projector-control.css
index 984a738fc..62e3e8ae9 100644
--- a/openslides/projector/static/styles/projector-control.css
+++ b/openslides/projector/static/styles/projector-control.css
@@ -67,7 +67,7 @@
 }
 /* countdown */
 a.countdown_visible_link.closed div {
-    background-image: url(../images/icons/user-offline.png);
+    background-image: url(../images/icons/off.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
@@ -75,7 +75,7 @@ a.countdown_visible_link.closed div {
     display: inline-block;
 }
 a.countdown_visible_link.open div {
-    background-image: url(../images/icons/user-online.png);
+    background-image: url(../images/icons/on.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
@@ -84,7 +84,7 @@ a.countdown_visible_link.open div {
 }
 /* activate link */
 a.activate_link div {
-    background-image: url(../images/icons/task-accepted-grey.png);
+    background-image: url(../images/icons/accept-grey.png);
     background-repeat: no-repeat;
     float: left;
     width: 16px;
@@ -95,5 +95,5 @@ a.activate_link div {
     left: 4px;
 }
 a.activate_link.active div {
-    background-image: url(../images/icons/task-accepted.png);
+    background-image: url(../images/icons/accept.png);
 }
diff --git a/openslides/projector/templates/projector/base_projector.html b/openslides/projector/templates/projector/base_projector.html
index 163c9f8ef..73bfb2e5b 100644
--- a/openslides/projector/templates/projector/base_projector.html
+++ b/openslides/projector/templates/projector/base_projector.html
@@ -17,7 +17,7 @@
         {% endif %}
         {% if perms.projector.can_see_projector %}
         <li>
-            <a href="{% url projector_show %}"><img src="{% static 'images/icons/video-projector.png' %}"> {% trans 'Projector view' %}</a>
+            <a href="{% url projector_show %}"><img src="{% static 'images/icons/projector.png' %}"> {% trans 'Projector view' %}</a>
         </li>
         {% endif %}
     </ul>
diff --git a/openslides/projector/templates/projector/control.html b/openslides/projector/templates/projector/control.html
index 39648f1ee..f685e4a40 100644
--- a/openslides/projector/templates/projector/control.html
+++ b/openslides/projector/templates/projector/control.html
@@ -55,7 +55,7 @@
             <img src="{% static 'images/icons/go-down.png' %}" />
         </a>
         <a class="projector_edit" href="{% url projector_clean %}" title="{% trans 'Reset projector view' %}">
-            <img src="{% static 'images/icons/view-restore.png' %}" />
+            <img src="{% static 'images/icons/view-reset.png' %}" />
         </a>
     </div>
 
@@ -113,13 +113,13 @@
                                 |
                                 <a href="{% url config_agenda %}">{{countdown_time}}{% trans "sec" %}</a>
                                 <a class="projector_countdown" href="{% url countdown_reset %}" title="{% trans 'Reset countdown' %}">
-                                    <img src="{% static 'images/icons/media-skip-backward.png' %}" />
+                                    <img src="{% static 'images/icons/skip-backward.png' %}" />
                                 </a>
                                 <a class="projector_countdown" href="{% url countdown_start %}" title="{% trans 'Start countdown' %}">
-                                    <img src="{% static 'images/icons/media-playback-start.png' %}" />
+                                    <img src="{% static 'images/icons/play.png' %}" />
                                 </a>
                                 <a class="projector_countdown" href="{% url countdown_stop %}" title="{% trans 'Stop countdown' %}">
-                                    <img src="{% static 'images/icons/media-playback-pause.png' %}" />
+                                    <img src="{% static 'images/icons/pause.png' %}" />
                                 </a>
                             {% endif %}
                             {% if overlay.def_name == "Message" %}
diff --git a/openslides/static/images/icons/task-accepted-grey.png b/openslides/static/images/icons/accept-grey.png
similarity index 100%
rename from openslides/static/images/icons/task-accepted-grey.png
rename to openslides/static/images/icons/accept-grey.png
diff --git a/openslides/static/images/icons/task-accepted.png b/openslides/static/images/icons/accept.png
similarity index 100%
rename from openslides/static/images/icons/task-accepted.png
rename to openslides/static/images/icons/accept.png
diff --git a/openslides/static/images/icons/list-add-user.png b/openslides/static/images/icons/add-user.png
similarity index 100%
rename from openslides/static/images/icons/list-add-user.png
rename to openslides/static/images/icons/add-user.png
diff --git a/openslides/static/images/icons/list-add.png b/openslides/static/images/icons/add.png
similarity index 100%
rename from openslides/static/images/icons/list-add.png
rename to openslides/static/images/icons/add.png
diff --git a/openslides/static/images/icons/edit-delete.png b/openslides/static/images/icons/delete.png
similarity index 100%
rename from openslides/static/images/icons/edit-delete.png
rename to openslides/static/images/icons/delete.png
diff --git a/openslides/static/images/icons/task-complete-grey.png b/openslides/static/images/icons/done-grey.png
similarity index 100%
rename from openslides/static/images/icons/task-complete-grey.png
rename to openslides/static/images/icons/done-grey.png
diff --git a/openslides/static/images/icons/task-complete.png b/openslides/static/images/icons/done.png
similarity index 100%
rename from openslides/static/images/icons/task-complete.png
rename to openslides/static/images/icons/done.png
diff --git a/openslides/static/images/icons/document-edit.png b/openslides/static/images/icons/edit.png
similarity index 100%
rename from openslides/static/images/icons/document-edit.png
rename to openslides/static/images/icons/edit.png
diff --git a/openslides/static/images/icons/document-export.png b/openslides/static/images/icons/export.png
similarity index 100%
rename from openslides/static/images/icons/document-export.png
rename to openslides/static/images/icons/export.png
diff --git a/openslides/static/images/icons/games-endturn.png b/openslides/static/images/icons/games-endturn.png
deleted file mode 100644
index 909a2f0d7..000000000
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diff --git a/openslides/static/images/icons/go-previous.png b/openslides/static/images/icons/go-previous.png
deleted file mode 100644
index 940797b8a..000000000
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diff --git a/openslides/static/images/icons/user-identity.png b/openslides/static/images/icons/guest.png
similarity index 100%
rename from openslides/static/images/icons/user-identity.png
rename to openslides/static/images/icons/guest.png
diff --git a/openslides/static/images/icons/help-hint.png b/openslides/static/images/icons/help-hint.png
deleted file mode 100644
index 352fd5415..000000000
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diff --git a/openslides/static/images/icons/document-import.png b/openslides/static/images/icons/import.png
similarity index 100%
rename from openslides/static/images/icons/document-import.png
rename to openslides/static/images/icons/import.png
diff --git a/openslides/static/images/icons/list-remove.png b/openslides/static/images/icons/list-remove.png
deleted file mode 100644
index 5a4d15b7b..000000000
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diff --git a/openslides/static/images/icons/milestone.png b/openslides/static/images/icons/number.png
similarity index 100%
rename from openslides/static/images/icons/milestone.png
rename to openslides/static/images/icons/number.png
diff --git a/openslides/static/images/icons/user-offline.png b/openslides/static/images/icons/off.png
similarity index 100%
rename from openslides/static/images/icons/user-offline.png
rename to openslides/static/images/icons/off.png
diff --git a/openslides/static/images/icons/user-online.png b/openslides/static/images/icons/on.png
similarity index 100%
rename from openslides/static/images/icons/user-online.png
rename to openslides/static/images/icons/on.png
diff --git a/openslides/static/images/icons/pdf-annotations.png b/openslides/static/images/icons/pdf-annotations.png
deleted file mode 100644
index dbb2e8b1c..000000000
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diff --git a/openslides/static/images/icons/process-stop.png b/openslides/static/images/icons/process-stop.png
deleted file mode 100644
index 5b4c488bd..000000000
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diff --git a/openslides/static/images/icons/video-projector.png b/openslides/static/images/icons/projector.png
similarity index 100%
rename from openslides/static/images/icons/video-projector.png
rename to openslides/static/images/icons/projector.png
diff --git a/openslides/static/images/icons/rating.png b/openslides/static/images/icons/rating.png
deleted file mode 100644
index b47a7d609..000000000
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diff --git a/openslides/static/images/icons/task-reject-grey.png b/openslides/static/images/icons/reject-grey.png
similarity index 100%
rename from openslides/static/images/icons/task-reject-grey.png
rename to openslides/static/images/icons/reject-grey.png
diff --git a/openslides/static/images/icons/task-reject.png b/openslides/static/images/icons/reject.png
similarity index 100%
rename from openslides/static/images/icons/task-reject.png
rename to openslides/static/images/icons/reject.png
diff --git a/openslides/static/images/icons/list-remove-user.png b/openslides/static/images/icons/remove-user.png
similarity index 100%
rename from openslides/static/images/icons/list-remove-user.png
rename to openslides/static/images/icons/remove-user.png
diff --git a/openslides/static/images/icons/document-revert.png b/openslides/static/images/icons/revert.png
similarity index 100%
rename from openslides/static/images/icons/document-revert.png
rename to openslides/static/images/icons/revert.png
diff --git a/openslides/static/images/icons/view-statistics.png b/openslides/static/images/icons/statistics.png
similarity index 100%
rename from openslides/static/images/icons/view-statistics.png
rename to openslides/static/images/icons/statistics.png
diff --git a/openslides/static/images/icons/edit-undo.png b/openslides/static/images/icons/undo.png
similarity index 100%
rename from openslides/static/images/icons/edit-undo.png
rename to openslides/static/images/icons/undo.png
diff --git a/openslides/static/images/icons/view-list-details.png b/openslides/static/images/icons/view-list-details.png
deleted file mode 100644
index be9cd195b..000000000
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diff --git a/openslides/static/images/icons/view-list-icons.png b/openslides/static/images/icons/view-list-icons.png
deleted file mode 100644
index 30f013899..000000000
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diff --git a/openslides/static/images/icons/view-list-text.png b/openslides/static/images/icons/view-list-text.png
deleted file mode 100644
index f4dcabdb2..000000000
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diff --git a/openslides/static/images/icons/view-list-tree.png b/openslides/static/images/icons/view-list-tree.png
deleted file mode 100644
index 0f8264c78..000000000
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diff --git a/openslides/static/images/icons/view-presentation.png b/openslides/static/images/icons/view-presentation.png
deleted file mode 100644
index 5426e6386..000000000
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diff --git a/openslides/static/images/icons/view-sort-ascending.png b/openslides/static/images/icons/view-sort-ascending.png
deleted file mode 100644
index c199438d8..000000000
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diff --git a/openslides/static/images/icons/task-attention.png b/openslides/static/images/icons/warning.png
similarity index 100%
rename from openslides/static/images/icons/task-attention.png
rename to openslides/static/images/icons/warning.png
diff --git a/openslides/static/styles/base.css b/openslides/static/styles/base.css
index e9a8482e5..76496ac16 100644
--- a/openslides/static/styles/base.css
+++ b/openslides/static/styles/base.css
@@ -357,61 +357,52 @@ input[type="submit"], input[type="button"]  {
     background:url(../images/icons/dialog-ok.png) no-repeat 0px 0px;
 }
 .button .edit{
-    background:url(../images/icons/document-edit.png) no-repeat 0px 0px;
+    background:url(../images/icons/edit.png) no-repeat 0px 0px;
 }
 .button .revert{
-    background:url(../images/icons/document-revert.png) no-repeat 0px 0px;
+    background:url(../images/icons/revert.png) no-repeat 0px 0px;
 }
 .button .undo{
-    background:url(../images/icons/edit-undo.png) no-repeat 0px 0px;
+    background:url(../images/icons/undo.png) no-repeat 0px 0px;
 }
 .button .item{
     background:url(../images/icons/view-list-details.png) no-repeat 0px 0px;
 }
 .button .projector{
-    background:url(../images/icons/video-projector.png) no-repeat 0px 0px;
+    background:url(../images/icons/projector.png) no-repeat 0px 0px;
 }
-.button .accept{
-    background:url(../images/icons/task-complete.png) no-repeat 0px 0px;
+.button .done{
+    background:url(../images/icons/done.png) no-repeat 0px 0px;
 }
 .button .reject{
-    background:url(../images/icons/task-reject.png) no-repeat 0px 0px;
+    background:url(../images/icons/reject.png) no-repeat 0px 0px;
 }
-.button .poll{
-    background:url(../images/icons/view-statistics.png) no-repeat 0px 0px;
-}
-.button .previous{
-    background:url(../images/icons/go-previous.png) no-repeat 0px 0px;
+.statistics{
+    background:url(../images/icons/statistics.png) no-repeat 0px 0px;
 }
 .button .pdf{
     background:url(../images/icons/pdf.png) no-repeat 0px 0px;
 }
 .button .adduser{
-    background:url(../images/icons/list-add-user.png) no-repeat 0px 0px;
+    background:url(../images/icons/add-user.png) no-repeat 0px 0px;
 }
 .button .removeuser{
-    background:url(../images/icons/list-remove-user.png) no-repeat 0px 0px;
+    background:url(../images/icons/remove-user.png) no-repeat 0px 0px;
 }
 .button .export{
-    background:url(../images/icons/document-export.png) no-repeat 0px 0px;
+    background:url(../images/icons/export.png) no-repeat 0px 0px;
 }
 .button .import{
-    background:url(../images/icons/document-import.png) no-repeat 0px 0px;
+    background:url(../images/icons/import.png) no-repeat 0px 0px;
 }
 .button .add{
-    background:url(../images/icons/list-add.png) no-repeat 0px 0px;
-}
-.button .remove{
-    background:url(../images/icons/list-remove.png) no-repeat 0px 0px;
+    background:url(../images/icons/add.png) no-repeat 0px 0px;
 }
 .button .number{
-    background:url(../images/icons/milestone.png) no-repeat 0px 0px;
-}
-.button .stop{
-    background:url(../images/icons/process-stop.png) no-repeat 0px 0px;
+    background:url(../images/icons/number.png) no-repeat 0px 0px;
 }
 .button .guest{
-    background:url(../images/icons/user-identity.png) no-repeat 0px 0px;
+    background:url(../images/icons/guest.png) no-repeat 0px 0px;
 }
 .button .clear{
     background:url(../images/icons/clear.png) no-repeat 0px 0px;
@@ -553,7 +544,7 @@ ul.results {
     padding: 10px 20px 10px 36px;
 }
 .notification.success {
-    background: url("../images/icons/task-complete.png") repeat scroll 0 0 #D5FFCE;
+    background: url("../images/icons/done.png") repeat scroll 0 0 #D5FFCE;
     border-color: #9ADF8F;
     color: #556652;
 }
@@ -563,7 +554,7 @@ ul.results {
     color: #665252;
 }
 .notification.warning {
-    background: url("../images/icons/task-attention.png") repeat scroll 0 0 #FFFBCC;
+    background: url("../images/icons/warning.png") repeat scroll 0 0 #FFFBCC;
     border-color: #E6DB55;
     color: #666452;
 }
@@ -587,14 +578,12 @@ ul.results {
 .preview {
     background:url("../images/icons/preview.png") no-repeat 0px 0px;
 }
-.poll {
-    background:url("../images/icons/view-statistics.png") no-repeat 0px 0px;
-}
+
 
 
 /* inactive/active */
 a.activate_link span {
-    background-image: url(../images/icons/task-accepted-grey.png);
+    background-image: url(../images/icons/accepted-grey.png);
     background-repeat: no-repeat;
     background-position: center;
     width: 16px;
@@ -602,7 +591,7 @@ a.activate_link span {
     display: inline-block;
 }
 a.activate_link.active span {
-    background-image: url(../images/icons/task-accepted.png);
+    background-image: url(../images/icons/accepted.png);
 }
 tr.activeline td, .activeline {
     background-color: #bed4de !important;