diff --git a/README.md b/README.md
index d211c02..d0bd0d5 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,13 @@ With this Terminal command you can customize this limit:
 defaults write de.relikd.baRSS shortArticleNamesLimit -int 50
 ```
 
+3. Each article menu item shows a summary tooltip (if the server provides one).
+By default, the tooltip is limited to 2000 characters.
+You can change the limit with this command:
+```
+defaults write de.relikd.baRSS tooltipCharacterLimit -int 500
+```
+
 3. Limit the number of displayed articles per feed menu.
 **Note:** displayed unread count may be different than the unread items inside. 'Open all unread' will open hidden items too.
 ```
diff --git a/baRSS/Core Data/FeedArticle+Ext.m b/baRSS/Core Data/FeedArticle+Ext.m
index cd99d3a..9264e37 100644
--- a/baRSS/Core Data/FeedArticle+Ext.m	
+++ b/baRSS/Core Data/FeedArticle+Ext.m	
@@ -63,7 +63,14 @@
 	item.state = (self.unread && UserPrefsBool(Pref_feedUnreadIndicator) ? NSControlStateValueOn : NSControlStateValueOff);
 	item.onStateImage = [NSImage imageNamed:RSSImageMenuItemUnread];
 	item.accessibilityLabel = (self.unread ? NSLocalizedString(@"article: unread", @"accessibility label, feed menu item") : NSLocalizedString(@"article: read", @"accessibility label, feed menu item"));
-	item.toolTip = (self.abstract ? self.abstract : self.body); // fall back to body (html)
+	// truncate tooltip
+	NSUInteger limit = UserPrefsUInt(Pref_tooltipCharacterLimit);
+	if (limit > 0) {
+		NSString *tooltip = (self.abstract ? self.abstract : self.body); // fall back to body (html)
+		if (tooltip.length > limit)
+			tooltip = [[tooltip substringToIndex:limit] stringByAppendingString:@"…\n[…]"];
+		item.toolTip = tooltip;
+	}
 	item.representedObject = self.objectID;
 	item.target = [self class];
 	item.action = @selector(didClickOnMenuItem:);
diff --git a/baRSS/Helper/UserPrefs.h b/baRSS/Helper/UserPrefs.h
index eeb13b2..24d8d1f 100644
--- a/baRSS/Helper/UserPrefs.h
+++ b/baRSS/Helper/UserPrefs.h
@@ -39,6 +39,7 @@
 // ------ Hidden preferences ------ only modifiable via `defaults write de.relikd.baRSS {KEY}` ------
 /** default: @c  10 */ static NSString* const Pref_openFewLinksLimit      = @"openFewLinksLimit";
 /** default: @c  60 */ static NSString* const Pref_shortArticleNamesLimit = @"shortArticleNamesLimit";
+/** default: @c  2k */ static NSString* const Pref_tooltipCharacterLimit  = @"tooltipCharacterLimit";
 /** default: @c  40 */ static NSString* const Pref_articlesInMenuLimit    = @"articlesInMenuLimit";
 /** default: @c nil */ static NSString* const Pref_colorStatusIconTint    = @"colorStatusIconTint";
 /** default: @c nil */ static NSString* const Pref_colorUnreadIndicator   = @"colorUnreadIndicator";
diff --git a/baRSS/Helper/UserPrefs.m b/baRSS/Helper/UserPrefs.m
index 1dcaf04..0e15008 100644
--- a/baRSS/Helper/UserPrefs.m
+++ b/baRSS/Helper/UserPrefs.m
@@ -29,6 +29,7 @@ void UserPrefsInit(void) {
 	// Display limits & truncation  ( defaults write de.relikd.baRSS {KEY} -int 10 )
 	[defs setObject:[NSNumber numberWithUnsignedInteger:10] forKey:Pref_openFewLinksLimit];
 	[defs setObject:[NSNumber numberWithUnsignedInteger:60] forKey:Pref_shortArticleNamesLimit];
+	[defs setObject:[NSNumber numberWithUnsignedInteger:2000] forKey:Pref_tooltipLimit];
 	[defs setObject:[NSNumber numberWithUnsignedInteger:40] forKey:Pref_articlesInMenuLimit];
 	[defs setObject:[NSNumber numberWithUnsignedInteger:1] forKey:Pref_prefSelectedTab]; // feed tab
 	[[NSUserDefaults standardUserDefaults] registerDefaults:defs];