diff --git a/dirhunt/crawler_url.py b/dirhunt/crawler_url.py
index 246cce9..642606e 100644
--- a/dirhunt/crawler_url.py
+++ b/dirhunt/crawler_url.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-import cgi
+import email.message
 import socket
 
 from bs4 import BeautifulSoup
@@ -71,7 +71,9 @@ def start(self):
                         self.crawler.results.put(Error(self, e))
                         self.close()
                         return self
-                    content_type = cgi.parse_header(resp.headers.get('Content-Type', ''))[0]
+                    ct = email.message.Message()
+                    ct['Content-Type'] = resp.headers.get('Content-Type', '')
+                    content_type = ct.get_content_type()
                     soup = BeautifulSoup(text, 'html.parser') if content_type == 'text/html' else None
         except RequestException as e:
             self.crawler.current_processed_count += 1
@@ -112,7 +114,9 @@ def maybe_rewrite(self):
     def must_be_downloaded(self, response):
         """The file must be downloaded to obtain information.
         """
-        return self.maybe_directory() or (cgi.parse_header(response.headers.get('Content-Type', ''))[0] in [
+        ct = email.message.Message()
+        ct['Content-Type'] = response.headers.get('Content-Type', '')
+        return self.maybe_directory() or (ct.get_content_type() in [
             'text/css', 'application/javascript'
         ])
 
diff --git a/dirhunt/processors.py b/dirhunt/processors.py
index b8c18ea..445f468 100644
--- a/dirhunt/processors.py
+++ b/dirhunt/processors.py
@@ -99,7 +99,7 @@ def search_index_files(self):
 
     def search_keywords(self, text):
         if sys.version_info > (3,) and isinstance(text, bytes):
-            text = text.decode('utf-8')
+            text = text.decode('utf-8', errors='replace')
         for keyword in self.crawler_url.crawler.interesting_keywords:
             if keyword in text:
                 self.keywords_found.add(keyword)
@@ -252,9 +252,9 @@ class ProcessCssStyleSheet(ProcessBase):
 
     def process(self, text, soup=None):
         if sys.version_info > (3,) and isinstance(text, bytes):
-            text = text.decode('utf-8')
+            text = text.decode('utf-8', errors='replace')
         self.search_keywords(text)
-        urls = [full_url_address(url, self.crawler_url.url) for url in re.findall(': *url\(["\']?(.+?)["\']?\)', text)]
+        urls = [full_url_address(url, self.crawler_url.url) for url in re.findall(r'url\([\'"]?(.+?)[\'"]?\)', text)]
         for url in urls:
             self.add_url(url, depth=0, type='asset')
         return urls
@@ -270,7 +270,7 @@ class ProcessJavaScript(ProcessBase):
 
     def process(self, text, soup=None):
         if sys.version_info > (3,) and isinstance(text, bytes):
-            text = text.decode('utf-8')
+            text = text.decode('utf-8', errors='replace')
         self.search_keywords(text)
         urls = [full_url_address(url[0], self.crawler_url.url)
                 for url in re.findall(TEXT_PLAIN_PATH_STRING_REGEX, text, re.VERBOSE)]
@@ -426,7 +426,7 @@ def tag_visible(element):
             if isinstance(element, Comment):
                 return False
             return True
-        texts = soup.findAll(text=True)
+        texts = soup.find_all(string=True)
         visible_texts = filter(tag_visible, texts)
         for text in visible_texts:
             if text.strip():