diff --git a/src/calibre/ebooks/epub/from_html.py b/src/calibre/ebooks/epub/from_html.py
index d61dc0051a..e0224cea88 100644
--- a/src/calibre/ebooks/epub/from_html.py
+++ b/src/calibre/ebooks/epub/from_html.py
@@ -166,6 +166,14 @@ class HTMLProcessor(Processor, Rationalizer):
                 if tag.get('type', '').lower().strip() in ('image/svg+xml',):
                     continue
                 tag.getparent().remove(tag)
+                
+        
+        for tag in self.root.xpath('//title|//style'):
+            if not tag.text:
+                tag.getparent().remove(tag)
+        for tag in self.root.xpath('//script'):
+            if not tag.text and not tag.get('src', False):
+                tag.getparent().remove(tag)
     
     def save(self):
         for meta in list(self.root.xpath('//meta')):
diff --git a/src/calibre/ebooks/lrf/html/convert_from.py b/src/calibre/ebooks/lrf/html/convert_from.py
index e884ea7213..673c92ebb9 100644
--- a/src/calibre/ebooks/lrf/html/convert_from.py
+++ b/src/calibre/ebooks/lrf/html/convert_from.py
@@ -1720,7 +1720,7 @@ class HTMLConverter(object, LoggingInterface):
                 self.previous_text = '\n'
             elif tagname in ['hr', 'tr']: # tr needed for nested tables
                 self.end_current_block()
-                if tagname == 'hr':
+                if tagname == 'hr' and not tag_css.get('width', '').strip().startswith('0'):
                     self.current_page.RuledLine(linelength=int(self.current_page.pageStyle.attrs['textwidth']))
                 self.previous_text = '\n'
                 self.process_children(tag, tag_css, tag_pseudo_css)