diff --git a/setup/plugins_mirror.py b/setup/plugins_mirror.py
index 20ffcc265f..1aa62c028d 100644
--- a/setup/plugins_mirror.py
+++ b/setup/plugins_mirror.py
@@ -229,7 +229,18 @@ def parse_metadata(raw, namelist, zf):
 
     raise ValueError('Could not find plugin class')
 
-def get_plugin_info(raw):
+def check_qt5_compatibility(zf, names):
+    uses_qt = False
+    for name in names:
+        if name.endswith('.py'):
+            raw = zf.read(name)
+            has_qt4 = b'PyQt4' in raw
+            uses_qt = uses_qt or has_qt4
+            if uses_qt and has_qt4 and b'PyQt5' not in raw:
+                return False
+    return True
+
+def get_plugin_info(raw, check_for_qt5=False):
     metadata = None
     with zipfile.ZipFile(io.BytesIO(raw)) as zf:
         names = {x.decode('utf-8') if isinstance(x, bytes) else x : x for x in zf.namelist()}
@@ -248,6 +259,8 @@ def get_plugin_info(raw):
         raw = zf.open(metadata).read()
         ans = parse_metadata(raw, names, zf)
         if isinstance(ans, dict):
+            if check_for_qt5:
+                ans['qt5'] = check_qt5_compatibility(zf, names)
             return ans
         # The plugin is importing its base class from somewhere else, le sigh
         for mod, _ in ans:
@@ -259,6 +272,8 @@ def get_plugin_info(raw):
                 raw = zf.open(names[mod]).read()
                 ans = parse_metadata(raw, names, zf)
                 if isinstance(ans, dict):
+                    if check_for_qt5:
+                        ans['qt5'] = check_qt5_compatibility(zf, names)
                     return ans
 
     raise ValueError('Failed to find plugin class')
@@ -498,6 +513,43 @@ def update_stats():
         json.dump(stats, f, indent=2)
     return stats
 
+def check_for_qt5_incompatibility():
+    ok_plugins, bad_plugins = [], []
+    for name in os.listdir('.'):
+        if name.endswith('.zip') and not name.endswith('-deprecated.zip'):
+            with open(name, 'rb') as f:
+                info = get_plugin_info(f.read(), check_for_qt5=True)
+                if info['qt5']:
+                    ok_plugins.append(info)
+                else:
+                    bad_plugins.append(info)
+    plugs = ['<li>%s</li>' % x['name'] for x in bad_plugins]
+    stats = '''
+<!DOCTYPE html>
+<html>
+<head><meta charset="utf-8"><title>Stats for porting of calibre plugins to Qt 5</title>
+<link rel="icon" type="image/x-icon" href="http://calibre-ebook.com/favicon.ico" />
+<style type="text/css">
+body { background-color: #eee; }
+h1 img, h3 img { vertical-align: middle; margin-right: 0.5em; }
+h1 { text-align: center }
+</style>
+</head>
+<body>
+<h1><img src="http://manual.calibre-ebook.com/_static/logo.png">Stats for porting of calibre plugins to Qt 5</h1>
+<p>Number of Qt 5 compatible plugins: %s<br>Number of Qt 5 incompatible plugins: %s<br>Percentage of plugins ported: %.0f%%</p>
+<h2>Plugins still to be ported</h2>
+<ul>
+%s
+</ul>
+</body>
+</html>
+    ''' % (len(ok_plugins), len(bad_plugins), len(ok_plugins)/(len(ok_plugins) + len(bad_plugins)) * 100,
+           '\n'.join(sorted(plugs, key=lambda x:x.lower())))
+    with open('porting.html', 'wb') as f:
+        f.write(stats.encode('utf-8'))
+
+
 def main():
     try:
         os.chdir(WORKDIR)
@@ -519,6 +571,7 @@ def main():
         plugins_index = load_plugins_index()
         plugins_index = fetch_plugins(plugins_index)
         create_index(plugins_index, stats)
+        check_for_qt5_incompatibility()
     except:
         import traceback
         log('Failed to run at:', datetime.utcnow().isoformat())
