diff --git a/data/gresource.xml b/data/gresource.xml
index 69e69cf5..7e848a6f 100644
--- a/data/gresource.xml
+++ b/data/gresource.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/io/elementary/xdg-desktop-portal-pantheon">
+    <file alias="48x48/apps/accessories-screencast-tool.svg" compressed="true" preprocess="xml-stripblanks">icons/screencast.svg</file>
+    <file alias="48x48@2/apps/accessories-screencast-tool.svg" compressed="true" preprocess="xml-stripblanks">icons/screencast.svg</file>
+
     <file alias="scalable/actions/grab-area-symbolic.svg" compressed="true" preprocess="xml-stripblanks">icons/grab-area-symbolic.svg</file>
     <file alias="scalable/actions/grab-screen-symbolic.svg" compressed="true" preprocess="xml-stripblanks">icons/grab-screen-symbolic.svg</file>
     <file alias="scalable/actions/grab-window-symbolic.svg" compressed="true" preprocess="xml-stripblanks">icons/grab-window-symbolic.svg</file>
diff --git a/data/icons/screencast.svg b/data/icons/screencast.svg
new file mode 100644
index 00000000..690e16d8
--- /dev/null
+++ b/data/icons/screencast.svg
@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="48" height="48" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="linearGradient3024" x1="24" x2="24" y1="6.0315" y2="41.934" gradientTransform="translate(4e-6 1)" gradientUnits="userSpaceOnUse">
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+   <stop stop-color="#fff" stop-opacity=".23529" offset=".030309"/>
+   <stop stop-color="#fff" stop-opacity=".15686" offset=".97834"/>
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+  </linearGradient>
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+   <stop stop-color="#181818" offset=".5"/>
+   <stop stop-color="#181818" stop-opacity="0" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient5060">
+   <stop offset="0"/>
+   <stop stop-opacity="0" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient4685">
+   <stop stop-color="#fff" offset="0"/>
+   <stop stop-color="#fff" stop-opacity="0" offset="1"/>
+  </linearGradient>
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+  </linearGradient>
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+  </linearGradient>
+  <linearGradient id="linearGradient3101" x1="71.204" x2="71.204" y1="6.2376" y2="44.341" gradientTransform="matrix(.51351 0 0 .51351 -24.836 -1.0213)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#fff" offset="0"/>
+   <stop stop-color="#fff" stop-opacity=".23529" offset=".50776"/>
+   <stop stop-color="#fff" stop-opacity=".15686" offset=".83457"/>
+   <stop stop-color="#fff" stop-opacity=".39216" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient3993-0-6-0-8-5" x1="71.204" x2="71.204" y1="6.2376" y2="44.341" gradientTransform="matrix(.2973 0 0 -.2973 14.674 43.539)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#fff" offset="0"/>
+   <stop stop-color="#fff" stop-opacity=".23529" offset=".50776"/>
+   <stop stop-color="#fff" stop-opacity=".15686" offset=".83457"/>
+   <stop stop-color="#fff" stop-opacity=".39216" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient1006" x1="24" x2="24" y1="16.501" y2="31.576" gradientTransform="matrix(.5999 0 0 .5999 21.602 21.603)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#ed5353" offset="0"/>
+   <stop stop-color="#c6262e" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient3039" x1="7.0776" x2="7.0776" y1="3.0816" y2="45.369" gradientTransform="matrix(.22111 0 0 .22111 30.693 30.693)" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#7a0000" offset="0"/>
+   <stop stop-color="#c6262e" offset="1"/>
+  </linearGradient>
+  <linearGradient id="linearGradient3032" x1="71.204" x2="71.204" y1="6.2376" y2="44.341" gradientTransform="matrix(.18918 0 0 .18918 22.429 31.203)" gradientUnits="userSpaceOnUse" xlink:href="#linearGradient3101"/>
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+ </defs>
+ <metadata>
+  <rdf:RDF>
+   <cc:Work rdf:about="">
+    <dc:format>image/svg+xml</dc:format>
+    <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
+   </cc:Work>
+  </rdf:RDF>
+ </metadata>
+ <g transform="matrix(1.1579 0 0 .64286 -3.7895 16.036)" opacity=".6">
+  <rect x="38" y="40" width="5" height="7" fill="url(#radialGradient3038)"/>
+  <rect transform="scale(-1)" x="-10" y="-47" width="5" height="7" fill="url(#radialGradient3040)"/>
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+ </g>
+ <rect transform="scale(1,-1)" x="4.5" y="-44.5" width="39" height="39" rx="4" ry="4" color="#000000" color-rendering="auto" fill="url(#linearGradient4158)" image-rendering="auto" shape-rendering="auto" solid-color="#000000" stop-color="#000000" stroke="#1a0e1f" stroke-opacity=".7" style="-inkscape-stroke:none;font-variation-settings:normal;isolation:auto;mix-blend-mode:normal"/>
+ <rect x="5.5" y="6.5" width="37" height="37" rx="3" ry="3" fill="none" opacity=".3" stroke="url(#linearGradient3024)" stroke-linecap="round" stroke-linejoin="round"/>
+ <g transform="translate(-3.4984e-8 5.0003)" opacity=".1">
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+   <path d="m35.334 31c2.6667 0 2.6667 0 2.6667-2.6667"/>
+  </g>
+ </g>
+ <g transform="translate(0 5.0003)" opacity=".3">
+  <path d="m38 14.666c0-2.6667 0-2.6667-2.6667-2.6667" fill="none" stroke="#000" stroke-width="2"/>
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+ </g>
+ <g transform="translate(0 -.00019948)">
+  <path d="m17 15v2h5v-2zm9 0v2h5v-2zm-17 8v5h2v-5zm28 0v5h2v-5zm-20 11v2h5v-2zm9 0v2h5v-2z" fill="#fff" fill-rule="evenodd"/>
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+ </g>
+ <g transform="translate(10.48 38.27)">
+  <path d="m6.5201-22.27v2h5v-2zm9 0v2h5v-2zm-17 8v5h2v-5zm28 0v5h2v-5zm-20 11v2h5v-2zm9 0v2h5v-2z" fill-rule="evenodd" opacity=".1" stop-color="#000000" style="-inkscape-stroke:none;font-variation-settings:normal"/>
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+ </g>
+ <path d="m6.5586 6c-1.2293 0.68096-2.0586 1.9897-2.0586 3.5v18.643l39-11.189v-7.4531c0-1.5103-0.82927-2.819-2.0586-3.5h-34.883z" fill="url(#linearGradient3887)" opacity=".15"/>
+ <g transform="matrix(.375 0 0 .35714 24 25.142)" stroke-width="2.7325">
+  <path d="m56 57.002a24 6.9986 0 1 1-48 0 24 6.9986 0 1 1 48 0z" fill="url(#radialGradient3300-8-3)" opacity=".2"/>
+  <path d="m48 59.002a16 4.9989 0 1 1-32 0 16 4.9989 0 1 1 32 0z" fill="url(#radialGradient4192-6-5)" opacity=".4"/>
+ </g>
+ <path d="m36 25.5c-5.7992 0-10.5 4.7014-10.5 10.5 0 5.799 4.7012 10.5 10.5 10.5 5.7989 0 10.5-4.7011 10.5-10.5 0-5.7985-4.7007-10.5-10.5-10.5z" fill="url(#linearGradient3932-9)"/>
+ <g fill="none" stroke-linecap="round" stroke-linejoin="round">
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+ </g>
+ <path d="m36 31.502c-2.4819 0-4.4982 2.0163-4.4982 4.4982s2.0163 4.4982 4.4982 4.4982 4.4982-2.0163 4.4982-4.4982-2.0163-4.4982-4.4982-4.4982z" fill="url(#linearGradient1006)" stroke="url(#linearGradient3039)" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.0036"/>
+ <path d="m39.5 36c0 1.9331-1.5672 3.4999-3.4999 3.4999-1.9329 0-3.4999-1.5672-3.4999-3.4999 0-1.9329 1.567-3.4998 3.4999-3.4998 1.9328 0 3.4999 1.5669 3.4999 3.4998z" color="#000000" fill="none" opacity=".5" stroke="url(#linearGradient3032)" stroke-linecap="round" stroke-linejoin="round"/>
+ <path d="m38 35a2 2 0 1 1-4 0 2 2 0 1 1 4 0z" color="#000000" fill="url(#linearGradient3259)" opacity=".4"/>
+</svg>
diff --git a/src/ScreenCast/Dialog.vala b/src/ScreenCast/Dialog.vala
index 4bbe8fc8..072daeba 100644
--- a/src/ScreenCast/Dialog.vala
+++ b/src/ScreenCast/Dialog.vala
@@ -5,7 +5,7 @@
  * Authored by: Leonhard Kargl <leo.kargl@proton.me>
  */
 
-public class ScreenCast.Dialog : Granite.Dialog {
+public class ScreenCast.Dialog : Granite.MessageDialog {
     public SourceType source_types { get; construct; }
     public bool allow_multiple { get; construct; }
 
@@ -27,6 +27,7 @@ public class ScreenCast.Dialog : Granite.Dialog {
         monitor_rows = new List<SelectionRow> ();
 
         list_box = new Gtk.ListBox () {
+            hexpand = true,
             vexpand = true
         };
         list_box.add_css_class (Granite.STYLE_CLASS_RICH_LIST);
@@ -64,8 +65,9 @@ public class ScreenCast.Dialog : Granite.Dialog {
             child = scrolled_window
         };
 
-        get_content_area ().append (frame);
+        custom_bin.append (frame);
 
+        resizable = true;
         default_height = 400;
         default_width = 300;
 
diff --git a/src/ScreenCast/Portal.vala b/src/ScreenCast/Portal.vala
index 2155ee91..38f7870c 100644
--- a/src/ScreenCast/Portal.vala
+++ b/src/ScreenCast/Portal.vala
@@ -115,7 +115,7 @@ public class ScreenCast.Portal : Object {
             start.callback ();
         });
 
-        session.start (parent_window);
+        session.start (app_id, parent_window);
 
         yield;
 
diff --git a/src/ScreenCast/Session.vala b/src/ScreenCast/Session.vala
index 3f1324d1..fe5694b5 100644
--- a/src/ScreenCast/Session.vala
+++ b/src/ScreenCast/Session.vala
@@ -85,8 +85,19 @@ public class ScreenCast.Session : Object {
         this.cursor_mode = cursor_mode;
     }
 
-    internal void start (string parent_window) {
-        var dialog = new Dialog (source_types, allow_multiple);
+    internal void start (string app_id, string parent_window) {
+        var dialog = new Dialog (source_types, allow_multiple) {
+            image_icon = new ThemedIcon ("accessories-screencast-tool"),
+            primary_text = _("An application wants to access the screen"),
+            secondary_text = _("Select which parts of the screen to share:")
+        };
+
+        if (app_id != "") {
+            var app_info = new DesktopAppInfo (app_id + ".desktop");
+            if (app_info != null) {
+                dialog.primary_text = _("“%s” wants to access the screen").printf (app_info.get_display_name ());
+            }
+        }
 
         try {
             var parent = ExternalWindow.from_handle (parent_window);