diff --git a/apps/comments/img/comments-dark.svg b/apps/comments/img/comments-dark.svg
new file mode 100644
index 0000000000..d331ea7711
--- /dev/null
+++ b/apps/comments/img/comments-dark.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="32" width="32" viewBox="0 0 32 32"><path fill="#000" d="M16 3C7.163 3 0 7.925 0 14s7.163 11 16 11c.5 0 .98-.032 1.47-.063L26 32v-9.406c3.658-2.017 6-5.12 6-8.595 0-6.076-7.164-11-16-11z"/></svg>
diff --git a/apps/comments/lib/Activity/Provider.php b/apps/comments/lib/Activity/Provider.php
index c55982827b..7bf686e796 100644
--- a/apps/comments/lib/Activity/Provider.php
+++ b/apps/comments/lib/Activity/Provider.php
@@ -87,7 +87,11 @@ class Provider implements IProvider {
 
 		if ($event->getSubject() === 'add_comment_subject') {
 			$this->parseMessage($event);
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/comment.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/comment.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/comment.svg')));
+			}
 
 			if ($this->activityManager->isFormattingFilteredObject()) {
 				try {
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php b/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
index d7730da61f..6082e68dcd 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
@@ -84,7 +84,11 @@ class Calendar extends Base {
 
 		$this->l = $this->languageFactory->get('dav', $language);
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.svg')));
+		}
 
 		if ($event->getSubject() === self::SUBJECT_ADD) {
 			$subject = $this->l->t('{actor} created calendar {calendar}');
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Event.php b/apps/dav/lib/CalDAV/Activity/Provider/Event.php
index daaace6b5b..b591eaa351 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Event.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Event.php
@@ -80,7 +80,11 @@ class Event extends Base {
 
 		$this->l = $this->languageFactory->get('dav', $language);
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'places/calendar-dark.svg')));
+		}
 
 		if ($event->getSubject() === self::SUBJECT_OBJECT_ADD . '_event') {
 			$subject = $this->l->t('{actor} created event {event} in calendar {calendar}');
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Todo.php b/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
index 747b39ddb7..0ad1d13745 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
@@ -40,7 +40,11 @@ class Todo extends Event {
 
 		$this->l = $this->languageFactory->get('dav', $language);
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/checkmark.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/checkmark.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/checkmark.svg')));
+		}
 
 		if ($event->getSubject() === self::SUBJECT_OBJECT_ADD . '_todo') {
 			$subject = $this->l->t('{actor} created todo {todo} in list {calendar}');
diff --git a/apps/files/img/add-color.png b/apps/files/img/add-color.png
new file mode 100644
index 0000000000..2211eb6e0b
Binary files /dev/null and b/apps/files/img/add-color.png differ
diff --git a/apps/files/img/change.png b/apps/files/img/change.png
new file mode 100644
index 0000000000..1465882d72
Binary files /dev/null and b/apps/files/img/change.png differ
diff --git a/apps/files/img/delete-color.png b/apps/files/img/delete-color.png
new file mode 100644
index 0000000000..1d563db1c8
Binary files /dev/null and b/apps/files/img/delete-color.png differ
diff --git a/apps/files/lib/Activity/FavoriteProvider.php b/apps/files/lib/Activity/FavoriteProvider.php
index 941579e730..318ce66e67 100644
--- a/apps/files/lib/Activity/FavoriteProvider.php
+++ b/apps/files/lib/Activity/FavoriteProvider.php
@@ -97,11 +97,19 @@ class FavoriteProvider implements IProvider {
 	public function parseShortVersion(IEvent $event) {
 
 		if ($event->getSubject() === self::SUBJECT_ADDED) {
-			$event->setParsedSubject($this->l->t('Added to favorites'))
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.svg')));
+			$event->setParsedSubject($this->l->t('Added to favorites'));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_REMOVED) {
-			$event->setParsedSubject($this->l->t('Removed from favorites'))
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.svg')));
+			$event->setParsedSubject($this->l->t('Removed from favorites'));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.svg')));
+			}
 		} else {
 			throw new \InvalidArgumentException();
 		}
@@ -120,10 +128,18 @@ class FavoriteProvider implements IProvider {
 
 		if ($event->getSubject() === self::SUBJECT_ADDED) {
 			$subject = $this->l->t('You added {file} to your favorites');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/starred.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_REMOVED) {
 			$subject = $this->l->t('You removed {file} from your favorites');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/star.svg')));
+			}
 		} else {
 			throw new \InvalidArgumentException();
 		}
diff --git a/apps/files/lib/Activity/Provider.php b/apps/files/lib/Activity/Provider.php
index c3289ed370..736b930b7a 100644
--- a/apps/files/lib/Activity/Provider.php
+++ b/apps/files/lib/Activity/Provider.php
@@ -110,21 +110,41 @@ class Provider implements IProvider {
 
 		if ($event->getSubject() === 'created_by') {
 			$subject = $this->l->t('Created by {user}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			}
 		} else if ($event->getSubject() === 'changed_by') {
 			$subject = $this->l->t('Changed by {user}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'deleted_by') {
 			$subject = $this->l->t('Deleted by {user}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			}
 		} else if ($event->getSubject() === 'restored_by') {
 			$subject = $this->l->t('Restored by {user}');
 		} else if ($event->getSubject() === 'renamed_by') {
 			$subject = $this->l->t('Renamed by {user}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'moved_by') {
 			$subject = $this->l->t('Moved by {user}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else {
 			throw new \InvalidArgumentException();
 		}
@@ -151,41 +171,85 @@ class Provider implements IProvider {
 
 		if ($event->getSubject() === 'created_self') {
 			$subject = $this->l->t('You created {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			}
 		} else if ($event->getSubject() === 'created_by') {
 			$subject = $this->l->t('{user} created {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			}
 		} else if ($event->getSubject() === 'created_public') {
 			$subject = $this->l->t('{file} was created in a public folder');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'add-color.svg')));
+			}
 		} else if ($event->getSubject() === 'changed_self') {
 			$subject = $this->l->t('You changed {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'changed_by') {
 			$subject = $this->l->t('{user} changed {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'deleted_self') {
 			$subject = $this->l->t('You deleted {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			}
 		} else if ($event->getSubject() === 'deleted_by') {
 			$subject = $this->l->t('{user} deleted {file}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'delete-color.svg')));
+			}
 		} else if ($event->getSubject() === 'restored_self') {
 			$subject = $this->l->t('You restored {file}');
 		} else if ($event->getSubject() === 'restored_by') {
 			$subject = $this->l->t('{user} restored {file}');
 		} else if ($event->getSubject() === 'renamed_self') {
 			$subject = $this->l->t('You renamed {oldfile} to {newfile}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'renamed_by') {
 			$subject = $this->l->t('{user} renamed {oldfile} to {newfile}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'moved_self') {
 			$subject = $this->l->t('You moved {oldfile} to {newfile}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else if ($event->getSubject() === 'moved_by') {
 			$subject = $this->l->t('{user} moved {oldfile} to {newfile}');
-			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', 'change.svg')));
+			}
 		} else {
 			throw new \InvalidArgumentException();
 		}
diff --git a/apps/files_sharing/lib/Activity/Providers/Downloads.php b/apps/files_sharing/lib/Activity/Providers/Downloads.php
index eb14c16266..1e1688d7b0 100644
--- a/apps/files_sharing/lib/Activity/Providers/Downloads.php
+++ b/apps/files_sharing/lib/Activity/Providers/Downloads.php
@@ -51,7 +51,11 @@ class Downloads extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
@@ -76,7 +80,11 @@ class Downloads extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/download.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
diff --git a/apps/files_sharing/lib/Activity/Providers/Groups.php b/apps/files_sharing/lib/Activity/Providers/Groups.php
index 06ccdaa98b..683927d573 100644
--- a/apps/files_sharing/lib/Activity/Providers/Groups.php
+++ b/apps/files_sharing/lib/Activity/Providers/Groups.php
@@ -51,7 +51,11 @@ class Groups extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
@@ -78,7 +82,11 @@ class Groups extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
diff --git a/apps/files_sharing/lib/Activity/Providers/PublicLinks.php b/apps/files_sharing/lib/Activity/Providers/PublicLinks.php
index b22ae0aa9b..98e4ebda2d 100644
--- a/apps/files_sharing/lib/Activity/Providers/PublicLinks.php
+++ b/apps/files_sharing/lib/Activity/Providers/PublicLinks.php
@@ -58,7 +58,11 @@ class PublicLinks extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
@@ -90,7 +94,11 @@ class PublicLinks extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
diff --git a/apps/files_sharing/lib/Activity/Providers/RemoteShares.php b/apps/files_sharing/lib/Activity/Providers/RemoteShares.php
index 4e7d8ef3e2..6ac0be76ff 100644
--- a/apps/files_sharing/lib/Activity/Providers/RemoteShares.php
+++ b/apps/files_sharing/lib/Activity/Providers/RemoteShares.php
@@ -73,7 +73,11 @@ class RemoteShares extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
@@ -100,7 +104,11 @@ class RemoteShares extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
diff --git a/apps/files_sharing/lib/Activity/Providers/Users.php b/apps/files_sharing/lib/Activity/Providers/Users.php
index eaab35bba9..02f47f3775 100644
--- a/apps/files_sharing/lib/Activity/Providers/Users.php
+++ b/apps/files_sharing/lib/Activity/Providers/Users.php
@@ -60,7 +60,11 @@ class Users extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
@@ -92,7 +96,11 @@ class Users extends Base {
 			throw new \InvalidArgumentException();
 		}
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+		}
 		$this->setSubjects($event, $subject, $parsedParameters);
 
 		return $event;
diff --git a/apps/sharebymail/lib/Activity.php b/apps/sharebymail/lib/Activity.php
index 73751cb241..df9cb36e0d 100644
--- a/apps/sharebymail/lib/Activity.php
+++ b/apps/sharebymail/lib/Activity.php
@@ -117,8 +117,12 @@ class Activity implements IProvider {
 				]))
 				->setRichSubject($this->l->t('Shared with {email}'), [
 					'email' => $parsedParameters['email'],
-				])
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				]);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_BY) {
 			$event->setParsedSubject($this->l->t('Shared with %1$s by %2$s', [
 				$parsedParameters['email']['name'],
@@ -127,20 +131,32 @@ class Activity implements IProvider {
 				->setRichSubject($this->l->t('Shared with {email} by {actor}'), [
 					'email' => $parsedParameters['email'],
 					'actor' => $parsedParameters['actor'],
-				])
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				]);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_PASSWORD_SEND) {
 			$event->setParsedSubject($this->l->t('Password for mail share sent to %1$s', [
 				$parsedParameters['email']['name']
 			]))
 				->setRichSubject($this->l->t('Password for mail share sent to {email}'), [
 					'email' => $parsedParameters['email']
-				])
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				]);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_PASSWORD_SEND_SELF) {
 			$event->setParsedSubject($this->l->t('Password for mail share sent to you'))
-				->setRichSubject($this->l->t('Password for mail share sent to you'))
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				->setRichSubject($this->l->t('Password for mail share sent to you'));
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else {
 			throw new \InvalidArgumentException();
 		}
@@ -162,29 +178,45 @@ class Activity implements IProvider {
 					$parsedParameters['file']['path'],
 					$parsedParameters['email']['name'],
 				]))
-				->setRichSubject($this->l->t('You shared {file} with {email} by mail'), $parsedParameters)
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				->setRichSubject($this->l->t('You shared {file} with {email} by mail'), $parsedParameters);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_BY) {
 			$event->setParsedSubject($this->l->t('%3$s shared %1$s with %2$s by mail', [
 				$parsedParameters['file']['path'],
 				$parsedParameters['email']['name'],
 				$parsedParameters['actor']['name'],
 			]))
-				->setRichSubject($this->l->t('{actor} shared {file} with {email} by mail'), $parsedParameters)
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				->setRichSubject($this->l->t('{actor} shared {file} with {email} by mail'), $parsedParameters);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_PASSWORD_SEND) {
 			$event->setParsedSubject($this->l->t('Password to access %1$s was sent to %2s', [
 				$parsedParameters['file']['path'],
 				$parsedParameters['email']['name']
 			]))
-				->setRichSubject($this->l->t('Password to access {file} was sent to {email}'), $parsedParameters)
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				->setRichSubject($this->l->t('Password to access {file} was sent to {email}'), $parsedParameters);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 		} else if ($event->getSubject() === self::SUBJECT_SHARED_EMAIL_PASSWORD_SEND_SELF) {
 			$event->setParsedSubject(
 				$this->l->t('Password to access %1$s was sent to you',
 					[$parsedParameters['file']['path']]))
-				->setRichSubject($this->l->t('Password to access {file} was sent to you'), $parsedParameters)
-				->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+				->setRichSubject($this->l->t('Password to access {file} was sent to you'), $parsedParameters);
+			if ($this->activityManager->getRequirePNG()) {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.png')));
+			} else {
+				$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/share.svg')));
+			}
 
 		} else {
 			throw new \InvalidArgumentException();
diff --git a/apps/systemtags/lib/Activity/Provider.php b/apps/systemtags/lib/Activity/Provider.php
index 5ef20c281b..db7ff94fd1 100644
--- a/apps/systemtags/lib/Activity/Provider.php
+++ b/apps/systemtags/lib/Activity/Provider.php
@@ -104,7 +104,12 @@ class Provider implements IProvider {
 	 */
 	public function parseShortVersion(IEvent $event) {
 		$parsedParameters = $this->getParameters($event);
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.svg')));
+
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.svg')));
+		}
 
 		if ($event->getSubject() === self::ASSIGN_TAG) {
 			if ($parsedParameters['actor']['id'] === $this->activityManager->getCurrentUserId()) {
@@ -157,7 +162,12 @@ class Provider implements IProvider {
 	 */
 	public function parseLongVersion(IEvent $event) {
 		$parsedParameters = $this->getParameters($event);
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.svg')));
+
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('core', 'actions/tag.svg')));
+		}
 
 		if ($event->getSubject() === self::CREATE_TAG) {
 			if ($parsedParameters['actor']['id'] === $this->activityManager->getCurrentUserId()) {
diff --git a/apps/twofactor_backupcodes/lib/Activity/Provider.php b/apps/twofactor_backupcodes/lib/Activity/Provider.php
index 9c7aaeae63..739ac9bbe1 100644
--- a/apps/twofactor_backupcodes/lib/Activity/Provider.php
+++ b/apps/twofactor_backupcodes/lib/Activity/Provider.php
@@ -24,8 +24,8 @@ namespace OCA\TwoFactorBackupCodes\Activity;
 
 use InvalidArgumentException;
 use OCP\Activity\IEvent;
+use OCP\Activity\IManager;
 use OCP\Activity\IProvider;
-use OCP\ILogger;
 use OCP\IURLGenerator;
 use OCP\L10N\IFactory as L10nFactory;
 
@@ -37,17 +37,17 @@ class Provider implements IProvider {
 	/** @var IURLGenerator */
 	private $urlGenerator;
 
-	/** @var ILogger */
-	private $logger;
+	/** @var IManager */
+	private $activityManager;
 
 	/**
 	 * @param L10nFactory $l10n
 	 * @param IURLGenerator $urlGenerator
-	 * @param ILogger $logger
+	 * @param IManager $activityManager
 	 */
-	public function __construct(L10nFactory $l10n, IURLGenerator $urlGenerator, ILogger $logger) {
-		$this->logger = $logger;
+	public function __construct(L10nFactory $l10n, IURLGenerator $urlGenerator, IManager $activityManager) {
 		$this->urlGenerator = $urlGenerator;
+		$this->activityManager = $activityManager;
 		$this->l10n = $l10n;
 	}
 
@@ -61,7 +61,12 @@ class Provider implements IProvider {
 		switch ($event->getSubject()) {
 			case 'codes_generated':
 				$event->setParsedSubject($l->t('You created two-factor backup codes for your account'));
-				$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+
+				if ($this->activityManager->getRequirePNG()) {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.png')));
+				} else {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+				}
 				break;
 			default:
 				throw new InvalidArgumentException();
diff --git a/core/img/actions/checkmark.png b/core/img/actions/checkmark.png
new file mode 100644
index 0000000000..eb938698fd
Binary files /dev/null and b/core/img/actions/checkmark.png differ
diff --git a/core/img/actions/comment.png b/core/img/actions/comment.png
new file mode 100644
index 0000000000..0dec289e38
Binary files /dev/null and b/core/img/actions/comment.png differ
diff --git a/core/img/actions/download.png b/core/img/actions/download.png
new file mode 100644
index 0000000000..6808969b30
Binary files /dev/null and b/core/img/actions/download.png differ
diff --git a/core/img/actions/password.png b/core/img/actions/password.png
new file mode 100644
index 0000000000..afe3e31a65
Binary files /dev/null and b/core/img/actions/password.png differ
diff --git a/core/img/actions/share.png b/core/img/actions/share.png
new file mode 100644
index 0000000000..8cc66f08f5
Binary files /dev/null and b/core/img/actions/share.png differ
diff --git a/core/img/actions/star.png b/core/img/actions/star.png
new file mode 100644
index 0000000000..61727fc3f1
Binary files /dev/null and b/core/img/actions/star.png differ
diff --git a/core/img/actions/starred.png b/core/img/actions/starred.png
new file mode 100644
index 0000000000..aa5bced775
Binary files /dev/null and b/core/img/actions/starred.png differ
diff --git a/core/img/actions/tag.png b/core/img/actions/tag.png
new file mode 100644
index 0000000000..6a466b367b
Binary files /dev/null and b/core/img/actions/tag.png differ
diff --git a/core/img/places/calendar-dark.png b/core/img/places/calendar-dark.png
new file mode 100644
index 0000000000..88e8ea64db
Binary files /dev/null and b/core/img/places/calendar-dark.png differ
diff --git a/settings/Activity/Provider.php b/settings/Activity/Provider.php
index 7893b450a4..575b7e9b56 100644
--- a/settings/Activity/Provider.php
+++ b/settings/Activity/Provider.php
@@ -22,6 +22,7 @@
 namespace OC\Settings\Activity;
 
 use OCP\Activity\IEvent;
+use OCP\Activity\IManager;
 use OCP\Activity\IProvider;
 use OCP\IL10N;
 use OCP\IURLGenerator;
@@ -50,6 +51,9 @@ class Provider implements IProvider {
 	/** @var IUserManager */
 	protected $userManager;
 
+	/** @var IManager */
+	private $activityManager;
+
 	/** @var string[] cached displayNames - key is the UID and value the displayname */
 	protected $displayNames = [];
 
@@ -57,11 +61,13 @@ class Provider implements IProvider {
 	 * @param IFactory $languageFactory
 	 * @param IURLGenerator $url
 	 * @param IUserManager $userManager
+	 * @param IManager $activityManager
 	 */
-	public function __construct(IFactory $languageFactory, IURLGenerator $url, IUserManager $userManager) {
+	public function __construct(IFactory $languageFactory, IURLGenerator $url, IUserManager $userManager, IManager $activityManager) {
 		$this->languageFactory = $languageFactory;
 		$this->url = $url;
 		$this->userManager = $userManager;
+		$this->activityManager = $activityManager;
 	}
 
 	/**
@@ -79,7 +85,11 @@ class Provider implements IProvider {
 
 		$this->l = $this->languageFactory->get('settings', $language);
 
-		$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('settings', 'personal.svg')));
+		if ($this->activityManager->getRequirePNG()) {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('settings', 'personal.png')));
+		} else {
+			$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('settings', 'personal.svg')));
+		}
 
 		if ($event->getSubject() === self::PASSWORD_CHANGED_BY) {
 			$subject = $this->l->t('{actor} changed your password');
diff --git a/settings/Activity/SecurityProvider.php b/settings/Activity/SecurityProvider.php
index 74747f684d..7b27fde363 100644
--- a/settings/Activity/SecurityProvider.php
+++ b/settings/Activity/SecurityProvider.php
@@ -24,8 +24,8 @@ namespace OC\Settings\Activity;
 
 use InvalidArgumentException;
 use OCP\Activity\IEvent;
+use OCP\Activity\IManager;
 use OCP\Activity\IProvider;
-use OCP\ILogger;
 use OCP\IURLGenerator;
 use OCP\L10N\IFactory as L10nFactory;
 
@@ -37,13 +37,13 @@ class SecurityProvider implements IProvider {
 	/** @var IURLGenerator */
 	private $urlGenerator;
 
-	/** @var ILogger */
-	private $logger;
+	/** @var IManager */
+	private $activityManager;
 
-	public function __construct(L10nFactory $l10n, IURLGenerator $urlGenerator, ILogger $logger) {
-		$this->logger = $logger;
+	public function __construct(L10nFactory $l10n, IURLGenerator $urlGenerator, IManager $activityManager) {
 		$this->urlGenerator = $urlGenerator;
 		$this->l10n = $l10n;
+		$this->activityManager = $activityManager;
 	}
 
 	public function parse($language, IEvent $event, IEvent $previousEvent = null) {
@@ -59,14 +59,22 @@ class SecurityProvider implements IProvider {
 				$event->setParsedSubject($l->t('You successfully logged in using two-factor authentication (%1$s)', [
 							$params['provider'],
 					]));
-				$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+				if ($this->activityManager->getRequirePNG()) {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.png')));
+				} else {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+				}
 				break;
 			case 'twofactor_failed':
 				$params = $event->getSubjectParameters();
 				$event->setParsedSubject($l->t('A login attempt using two-factor authentication failed (%1$s)', [
 							$params['provider'],
 					]));
-				$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+				if ($this->activityManager->getRequirePNG()) {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.png')));
+				} else {
+					$event->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/password.svg')));
+				}
 				break;
 			default:
 				throw new InvalidArgumentException();
diff --git a/settings/img/personal.png b/settings/img/personal.png
new file mode 100644
index 0000000000..3c9c7345f6
Binary files /dev/null and b/settings/img/personal.png differ