diff --git a/README.md b/README.md
index 15fdb20..0654212 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@ Admins are allowed to remove restrictions on any page they want. [Check this sec
 
 If you want to use Yotter, it is recommended to self-host your own instance. You can use it for personal use or open it to the world. Self-hosting makes Yotter stronger and gives you full power. See [self hosting guide](https://github.com/ytorg/Yotter/blob/dev-indep/SELF-HOSTING.md).
 
-### Will you ever implement video recomendations, trendig videos, etc?
+### Will you ever implement video recommendations, trending videos, etc?
 No. From my point of view, these are toxic features. I, and every user, should be using all *social media* to get the content **they** want. Recomendations, trending, autoplay next video, etc. are all features designed to trap users on using the app, to make them forget about the time spent there and to create an addiction to it. No, I won't implement any toxic features on Yotter. Yotter will keep the UI clean, fast and simple. 
 
 You get your feed from followed accounts and you can search for any video you like. Only thing I would consider implementing would be some kind of page where you can ask for recommendations for a particular video. This way the user would, voluntarily, ask for the recommendations rather than having a temptation to click on a new, youtube-bias-recommended video.
diff --git a/SELF-HOSTING.md b/SELF-HOSTING.md
index 437adf6..2263d89 100644
--- a/SELF-HOSTING.md
+++ b/SELF-HOSTING.md
@@ -123,7 +123,7 @@ If after the MySQL-server installation you have not been prompted to create a pa
 * `pip install cryptography`
 * `pip install -r requirements.txt`
 
-> You can edit the `yotter-config.json` file. [Check out all the options here](https://github.com/ytorg/Yotter/blob/dev-indep/README.md#configure-the-server)
+> You can edit the `yotter-config.json` file. [Check out all the options here](#configure-the-server)
 
 5. Install gunicorn (production web server for Python apps) and pymysql:
 `pip install gunicorn pymysql`
@@ -203,9 +203,69 @@ killasgroup=true
 After you write this configuration file, you have to reload the supervisor service for it to be imported:
 `sudo supervisorctl reload`
 
-#### Step 4: Nginx set up and HTTPS
+#### Step 4: Set up Nginx, http3 proxy and HTTPS
 The Yotter application server powered by gunicorn is now running privately port 8000. Now we need to expose the application to the outside world by enabling public facing web server on ports 80 and 443, the two ports too need to be opened on the firewall to handle the web traffic of the application. I want this to be a secure deployment, so I'm going to configure port 80 to forward all traffic to port 443, which is going to be encrypted. [ref](https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvii-deployment-on-linux).
 
+First we will get and set up the `http3-ytproxy`. For this we will need to [install go](https://github.com/golang/go/wiki/Ubuntu) but if you are on Ubuntu 20.04 or you have `snap` installed you can just run `sudo snap install --classic go` to get `go` installed.
+
+Then you will need to run the following commands:
+```
+cd $HOME
+git clone https://github.com/FireMasterK/http3-ytproxy
+cd http3-ytproxy
+go build -ldflags "-s -w" main.go
+mv main http3-ytproxy
+mkdir socket
+chown -R www-data:www-data socket
+```
+
+Now we will configure a `systemd` service to run the http3-ytproxy. For this you will need to `sudo nano /lib/systemd/system/http3-ytproxy.service` to start a the `nano` text editor. Now copy and paste this and save:
+
+> IMPORTANT: You may need to change some paths to fit your system!
+
+```
+[Unit]
+Description=Sleep service
+ConditionPathExists=/home/ubuntu/http3-ytproxy/http3-ytproxy
+After=network.target
+ 
+[Service]
+Type=simple
+User=www-data
+Group=www-data
+LimitNOFILE=1024
+
+Restart=on-failure
+RestartSec=10
+
+WorkingDirectory=/home/ubuntu/http3-ytproxy
+ExecStart=/home/ubuntu/http3-ytproxy/http3-ytproxy
+
+# make sure log directory exists and owned by syslog
+PermissionsStartOnly=true
+ExecStartPre=/bin/mkdir -p /var/log/http3-ytproxy
+ExecStartPre=/bin/chown syslog:adm /var/log/http3-ytproxy
+ExecStartPre=/bin/chmod 755 /var/log/http3-ytproxy
+StandardOutput=syslog
+StandardError=syslog
+SyslogIdentifier=http3-ytproxy
+ 
+[Install]
+WantedBy=multi-user.target
+```
+
+> IMPORTANT NOTE: Some distros have the Nginx user as `nginx` instead of `www-data`, if this is the case you should change the `User=` and `Group=` variables from the service file.
+
+Now you are ready to enable and start the service:
+```
+sudo systemctl enable http3-ytproxy.service
+sudo systemctl start http3-ytproxy.service
+```
+
+If you did everything ok you should see no errors when running `sudo journalctl -f -u http3-ytproxy`.
+
+Now we will set up Nginx. To do so:
+
 * `sudo rm /etc/nginx/sites-enabled/default`
 
 Create a new Nginx site, you can run `sudo nano /etc/nginx/sites-enabled/yotter`
@@ -225,15 +285,21 @@ server {
         expires 30d;
     }
     
-    location ~ (/videoplayback|/vi/|/a/) {
-       proxy_buffering off;
-       resolver 1.1.1.1;
-       proxy_pass https://$arg_host;
-       proxy_set_header Host $arg_host;
-       add_header Access-Control-Allow-Origin *;
-     }
+    location ~ (^/videoplayback$|/videoplayback/|/vi/|/a/|/ytc/) {
+        proxy_pass http://unix:/home/ubuntu/http3-ytproxy/socket/http-proxy.sock;
+        add_header Access-Control-Allow-Origin *;
+        sendfile on;
+        tcp_nopush on;
+        aio_write on;
+        aio threads=default;
+        directio 512;
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+    }
 }
 ```
+> Note: You may need to change the proxy-pass line to fit your system. It should point to the socket created on the `http3-ytproxy/socket` folder.
+
 Make sure to replace `<yourdomain>` by the domain you are willing to use for your instance (i.e example.com). You can now edit `yotter-config.json` and set `isInstance` to `true`.
 
 You will also need to change the `</path/to>` after `alias` to fit your system. You have to point to the Yotter folder, in this set up it would be `/home/ubuntu` as it is the location where we cloned the Yotter app. This alias is created to handle static files directly, without forwarding to the application.
@@ -251,6 +317,8 @@ Now we will run certbot and we need to tell that we run an nginx server. Here yo
 
 [Follow this instructions to install certbot and generate an ssl certificate so your server can use HTTPS](https://certbot.eff.org/lets-encrypt/ubuntufocal-nginx)
 
+Finally, once this is done, you should edit the `yotter` nginx config and change the `listen 443 ssl;` line to `listen 443 ssl http2;`
+
 #### Updating the server
 Updating the server should always be pretty easy. These steps need to be run on the Yotter folder and with the python virtual env activated.
 
diff --git a/app/models.py b/app/models.py
index b30aa9d..eeafcce 100644
--- a/app/models.py
+++ b/app/models.py
@@ -27,11 +27,11 @@ class User(UserMixin, db.Model):
     posts = db.relationship('Post', backref='author', lazy='dynamic')
 
     def __repr__(self):
-        return '<User {}>'.format(self.username)
+        return f'<User {self.username}>'
 
     def set_last_seen(self):
         self.last_seen = datetime.utcnow()
-    
+
     def set_admin_user(self):
         self.is_admin = True
 
@@ -40,7 +40,7 @@ class User(UserMixin, db.Model):
 
     def check_password(self, password):
         return check_password_hash(self.password_hash, password)
-    
+
     def follow(self, user):
         if not self.is_following(user):
             self.followed.append(user)
@@ -52,7 +52,7 @@ class User(UserMixin, db.Model):
     def is_following(self, user):
         return self.followed.filter(
             followers.c.followed_id == user.id).count() > 0
-    
+
     def following_list(self):
         return self.followed.all()
 
@@ -62,7 +62,7 @@ class User(UserMixin, db.Model):
     # TWITTER
     def twitter_following_list(self):
         return self.twitterFollowed.all()
-    
+
     def is_following_tw(self, uname):
         temp_cid = twitterFollow.query.filter_by(username = uname).first()
         if temp_cid is None:
@@ -73,11 +73,11 @@ class User(UserMixin, db.Model):
                 if f.username == uname:
                     return True
         return False
-    
+
     # YOUTUBE
     def youtube_following_list(self):
         return self.youtubeFollowed.all()
-    
+
     def is_following_yt(self, cid):
         temp_cid = youtubeFollow.query.filter_by(channelId = cid).first()
         if temp_cid is None:
@@ -88,7 +88,7 @@ class User(UserMixin, db.Model):
                 if f.channelId == cid:
                     return True
         return False
-        
+
     followed = db.relationship(
         'User', secondary=followers,
         primaryjoin=(followers.c.follower_id == id),
@@ -148,23 +148,23 @@ class youtubeFollow(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     channelId = db.Column(db.String(30), nullable=False)
     channelName = db.Column(db.String(100))
-    followers = db.relationship('User', 
+    followers = db.relationship('User',
                                 secondary=channel_association,
                                 back_populates="youtubeFollowed")
-    
+
     def __repr__(self):
-        return '<youtubeFollow {}>'.format(self.channelName)
+        return f'<youtubeFollow {self.channelName}>'
 
 class twitterFollow(db.Model):
     __tablename__ = 'twitterAccount'
     id = db.Column(db.Integer, primary_key=True)
     username = db.Column(db.String(100), nullable=False)
-    followers = db.relationship('User', 
+    followers = db.relationship('User',
                                 secondary=twitter_association,
                                 back_populates="twitterFollowed")
-    
+
     def __repr__(self):
-        return '<twitterFollow {}>'.format(self.username)
+        return f'<twitterFollow {self.username}>'
 
 class Post(db.Model):
     id = db.Column(db.Integer, primary_key=True)
@@ -175,5 +175,4 @@ class Post(db.Model):
     user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
 
     def __repr__(self):
-        return '<Post {}>'.format(self.body)
-        
+        return f'<Post {self.body}>'
diff --git a/app/routes.py b/app/routes.py
index c8075ce..b4c8b73 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -91,7 +91,7 @@ def twitter(page=0):
         followList.append(f.username)
     posts = []
 
-    cache_file = glob.glob("app/cache/{}_*".format(current_user.username))
+    cache_file = glob.glob(f"app/cache/{current_user.username}_*")
     if (len(cache_file) > 0):
         time_diff = round(time.time() - os.path.getmtime(cache_file[0]))
     else:
@@ -103,20 +103,20 @@ def twitter(page=0):
             for f in cache_file:
                 os.remove(f)
         feed = nitterfeed.get_feed(followList)
-        cache_file = "{u}_{d}.json".format(u=current_user.username, d=time.strftime("%Y%m%d-%H%M%S"))
-        with open("app/cache/{}".format(cache_file), 'w') as fp:
+        cache_file = f"{current_user.username}_{time.strftime('%Y%m%d-%H%M%S')}.json"
+        with open(f"app/cache/{cache_file}", 'w') as fp:
             json.dump(feed, fp)
 
     # Else, refresh feed
     else:
         try:
-            cache_file = glob.glob("app/cache/{}*".format(current_user.username))[0]
+            cache_file = glob.glob(f"app/cache/{current_user.username}*")[0]
             with open(cache_file, 'r') as fp:
                 feed = json.load(fp)
         except:
             feed = nitterfeed.get_feed(followList)
-            cache_file = "{u}_{d}.json".format(u=current_user.username, d=time.strftime("%Y%m%d-%H%M%S"))
-            with open("app/cache/{}".format(cache_file), 'w') as fp:
+            cache_file = f"{current_user.username}_{time.strftime('%Y%m%d-%H%M%S')}.json"
+            with open(f"app/cache/{cache_file}", 'w') as fp:
                 json.dump(feed, fp)
 
     posts.extend(feed)
@@ -187,7 +187,7 @@ def follow(username):
     form = EmptyForm()
     if form.validate_on_submit():
         if followTwitterAccount(username):
-            flash("{} followed!".format(username))
+            flash(f"{username} followed!")
     return redirect(request.referrer)
 
 
@@ -202,7 +202,7 @@ def followTwitterAccount(username):
                 db.session.commit()
                 return True
             except:
-                flash("Twitter: Couldn't follow {}. Already followed?".format(username))
+                flash(f"Twitter: Couldn't follow {username}. Already followed?")
                 return False
     else:
         flash("Something went wrong... try again")
@@ -215,7 +215,7 @@ def unfollow(username):
     form = EmptyForm()
     if form.validate_on_submit():
         if twUnfollow(username):
-            flash("{} unfollowed!".format(username))
+            flash(f"{username} unfollowed!")
     return redirect(request.referrer)
 
 
@@ -248,7 +248,7 @@ def search():
         if results:
             return render_template('search.html', form=form, results=results, config=config)
         else:
-            flash("User {} not found...".format(user))
+            flash(f"User {user} not found...")
             return redirect(request.referrer)
     else:
         return render_template('search.html', form=form, config=config)
@@ -262,7 +262,7 @@ def u(username, page=1):
     if username == "favicon.ico":
         return redirect(url_for('static', filename='favicons/favicon.ico'))
     form = EmptyForm()
-    avatarPath = "img/avatars/{}.png".format(str(random.randint(1, 12)))
+    avatarPath = f"img/avatars/{str(random.randint(1, 12))}.png"
     user = nitteruser.get_user_info(username)
     if not user:
         flash("This user is not on Twitter.")
@@ -281,7 +281,7 @@ def u(username, page=1):
         prev_page = 0
     else:
         prev_page = page-1
-    
+
     if page > 2:
         page =2
 
@@ -300,7 +300,7 @@ def youtube():
     videos = getYoutubePosts(ids)
     if videos:
         videos.sort(key=lambda x: x.date, reverse=True)
-    print("--- {} seconds fetching youtube feed---".format(time.time() - start_time))
+    print(f"--- {time.time() - start_time} seconds fetching youtube feed---")
     return render_template('youtube.html', title="Yotter | Youtube", videos=videos, followCount=followCount,
                            config=config)
 
@@ -337,22 +337,21 @@ def ytsearch():
         filters = {"time": 0, "type": 0, "duration": 0}
         results = yts.search_by_terms(query, page, autocorrect, sort, filters)
 
-        next_page = "/ytsearch?q={q}&s={s}&p={p}".format(q=query, s=sort, p=int(page) + 1)
+        next_page = f"/ytsearch?q={query}&s={sort}&p={int(page)+1}"
         if int(page) == 1:
-            prev_page = "/ytsearch?q={q}&s={s}&p={p}".format(q=query, s=sort, p=1)
+            prev_page = f"/ytsearch?q={query}&s={sort}&p={1}"
         else:
-            prev_page = "/ytsearch?q={q}&s={s}&p={p}".format(q=query, s=sort, p=int(page) - 1)
+            prev_page = f"/ytsearch?q={query}&s={sort}&p={int(page)-1}"
 
         for video in results['videos']:
             hostname = urllib.parse.urlparse(video['videoThumb']).netloc
-            video['videoThumb'] = video['videoThumb'].replace("https://{}".format(hostname), "") + "&host=" + hostname
+            video['videoThumb'] = video['videoThumb'].replace(f"https://{hostname}", "") + "&host=" + hostname
 
         for channel in results['channels']:
             if config['isInstance']:
                 channel['thumbnail'] = channel['thumbnail'].replace("~", "/")
                 hostName = urllib.parse.urlparse(channel['thumbnail']).netloc
-                channel['thumbnail'] = channel['thumbnail'].replace("https://{}".format(hostName),
-                                                                    "") + "?host=" + hostName
+                channel['thumbnail'] = channel['thumbnail'].replace(f"https://{hostName}", "") + "?host=" + hostName
         return render_template('ytsearch.html', form=form, btform=button_form, results=results,
                                restricted=config['restrictPublicUsage'], config=config, npage=next_page,
                                ppage=prev_page)
@@ -380,7 +379,7 @@ def followYoutubeChannel(channelId):
                 follow.followers.append(current_user)
                 db.session.add(follow)
                 db.session.commit()
-                flash("{} followed!".format(channelData['channel_name']))
+                flash(f"{channelData['channel_name']} followed!")
                 return True
             else:
                 return False
@@ -388,8 +387,8 @@ def followYoutubeChannel(channelId):
             print(e)
             return False
     except KeyError as ke:
-        print("KeyError: {}:'{}' could not be found".format(ke, channelId))
-        flash("Youtube: ChannelId '{}' is not valid".format(channelId))
+        print(f"KeyError: {ke}:'{channelId}' could not be found")
+        flash(f"Youtube: ChannelId '{channelId}' is not valid")
         return False
 
 
@@ -410,7 +409,7 @@ def unfollowYoutubeChannel(channelId):
         if channel:
             db.session.delete(channel)
             db.session.commit()
-        flash("{} unfollowed!".format(name))
+        flash(f"{name} unfollowed!")
     except:
         flash("There was an error unfollowing the user. Try again.")
 
@@ -435,22 +434,22 @@ def channel(id):
     for video in data['items']:
         if config['isInstance']:
             hostName = urllib.parse.urlparse(video['thumbnail'][1:]).netloc
-            video['thumbnail'] = video['thumbnail'].replace("https://{}".format(hostName), "")[1:].replace("hqdefault",
-                                                                                                           "mqdefault") + "&host=" + hostName
+            video['thumbnail'] = video['thumbnail'].replace(f"https://{hostName}", "")[1:].replace("hqdefault",
+                                                                                                   "mqdefault") + "&host=" + hostName
         else:
             video['thumbnail'] = video['thumbnail'].replace('/', '~')
 
     if config['isInstance']:
         hostName = urllib.parse.urlparse(data['avatar'][1:]).netloc
-        data['avatar'] = data['avatar'].replace("https://{}".format(hostName), "")[1:] + "?host=" + hostName
+        data['avatar'] = data['avatar'].replace(f"https://{hostName}", "")[1:] + "?host=" + hostName
     else:
         data['avatar'] = data['avatar'].replace('/', '~')
 
-    next_page = "/channel/{q}?s={s}&p={p}".format(q=id, s=sort, p=int(page) + 1)
+    next_page = f"/channel/{id}?s={sort}&p={int(page)+1}"
     if int(page) == 1:
-        prev_page = "/channel/{q}?s={s}&p={p}".format(q=id, s=sort, p=1)
+        prev_page = f"/channel/{id}?s={sort}&p={1}"
     else:
-        prev_page = "/channel/{q}?s={s}&p={p}".format(q=id, s=sort, p=int(page) - 1)
+        prev_page = f"/channel/{id}?s={sort}&p={int(page)-1}"
 
     return render_template('channel.html', form=form, btform=button_form, data=data,
                            restricted=config['restrictPublicUsage'], config=config, next_page=next_page,
@@ -488,11 +487,11 @@ def watch():
     if info['error'] == False:
         for format in info['formats']:
             hostName = urllib.parse.urlparse(format['url']).netloc
-            format['url'] = format['url'].replace("https://{}".format(hostName), "") + "&host=" + hostName
+            format['url'] = format['url'].replace(f"https://{hostName}", "") + "&host=" + hostName
 
         for format in info['audio_formats']:
             hostName = urllib.parse.urlparse(format['url']).netloc
-            format['url'] = format['url'].replace("https://{}".format(hostName), "") + "&host=" + hostName
+            format['url'] = format['url'].replace(f"https://{hostName}", "") + "&host=" + hostName
 
         # Markup description
         try:
@@ -804,7 +803,7 @@ def status():
 
 @app.route('/error/<errno>')
 def error(errno):
-    return render_template('{}.html'.format(str(errno)), config=config)
+    return render_template(f'{str(errno)}.html', config=config)
 
 
 def getTimeDiff(t):
@@ -812,24 +811,26 @@ def getTimeDiff(t):
 
     if diff.days == 0:
         if diff.seconds > 3599:
-            timeString = "{}h".format(int((diff.seconds / 60) / 60))
+            num = int((diff.seconds / 60) / 60)
+            timeString = f"{num}h"
         else:
-            timeString = "{}m".format(int(diff.seconds / 60))
+            num = int(diff.seconds / 60)
+            timeString = f"{num}m"
     else:
-        timeString = "{}d".format(diff.days)
+        timeString = f"{diff.days}d"
     return timeString
 
 
 def isTwitterUser(username):
-    response = requests.get('{instance}{user}/rss'.format(instance=NITTERINSTANCE, user=username))
+    response = requests.get(f'{NITTERINSTANCE}{username}/rss')
     if response.status_code == 404:
         return False
     return True
 
 
 def twitterUserSearch(terms):
-    response = urllib.request.urlopen(
-        '{instance}search?f=users&q={user}'.format(instance=NITTERINSTANCE, user=urllib.parse.quote(terms))).read()
+    url = f'{NITTERINSTANCE}search?f=users&q={urllib.parse.quote(terms)}'
+    response = urllib.request.urlopen(url).read()
     html = BeautifulSoup(str(response), "lxml")
 
     results = []
@@ -843,14 +844,14 @@ def twitterUserSearch(terms):
                     'unicode_escape').encode('latin_1').decode('utf8'),
                 "username": item.find('a', attrs={'class': 'username'}).getText().encode('latin_1').decode(
                     'unicode_escape').encode('latin_1').decode('utf8'),
-                'avatar': "{i}{s}".format(i=NITTERINSTANCE, s=item.find('img', attrs={'class': 'avatar'})['src'][1:])
+                'avatar': NITTERINSTANCE + item.find('img', attrs={'class': 'avatar'})['src'][1:],
             }
             results.append(user)
         return results
 
 
 def getTwitterUserInfo(username):
-    response = urllib.request.urlopen('{instance}{user}'.format(instance=NITTERINSTANCE, user=username)).read()
+    response = urllib.request.urlopen('{NITTERINSTANCE}{username}').read()
     # rssFeed = feedparser.parse(response.content)
 
     html = BeautifulSoup(str(response), "lxml")
@@ -881,9 +882,7 @@ def getTwitterUserInfo(username):
             "followers": numerize.numerize(
                 int(html.find_all('span', attrs={'class': 'profile-stat-num'})[2].string.replace(",", ""))),
             "likes": html.find_all('span', attrs={'class': 'profile-stat-num'})[3].string,
-            "profilePic": "{instance}{pic}".format(instance=NITTERINSTANCE,
-                                                   pic=html.find('a', attrs={'class': 'profile-card-avatar'})['href'][
-                                                       1:])
+            "profilePic": NITTERINSTANCE + html.find('a', attrs={'class': 'profile-card-avatar'})['href'][1:],
         }
         return user
 
@@ -891,7 +890,7 @@ def getTwitterUserInfo(username):
 def getFeed(urls):
     feedPosts = []
     with FuturesSession() as session:
-        futures = [session.get('{instance}{user}'.format(instance=NITTERINSTANCE, user=u.username)) for u in urls]
+        futures = [session.get(f'{NITTERINSTANCE}{u.username}') for u in urls]
         for future in as_completed(futures):
             res= future.result().content
             html = BeautifulSoup(res, "html.parser")
@@ -960,7 +959,7 @@ def getPosts(account):
     feedPosts = []
 
     # Gather profile info.
-    rssFeed = urllib.request.urlopen('{instance}{user}'.format(instance=NITTERINSTANCE, user=account)).read()
+    rssFeed = urllib.request.urlopen(f'{NITTERINSTANCE}{account}').read()
     # Gather feedPosts
     res = rssFeed.decode('utf-8')
     html = BeautifulSoup(res, "html.parser")
@@ -1018,8 +1017,7 @@ def getPosts(account):
 def getYoutubePosts(ids):
     videos = []
     with FuturesSession() as session:
-        futures = [session.get('https://www.youtube.com/feeds/videos.xml?channel_id={id}'.format(id=id.channelId)) for
-                   id in ids]
+        futures = [session.get(f'https://www.youtube.com/feeds/videos.xml?channel_id={id.channelId}') for id in ids]
         for future in as_completed(futures):
             resp = future.result()
             rssFeed = feedparser.parse(resp.content)
@@ -1050,7 +1048,7 @@ def getYoutubePosts(ids):
                     video.timeStamp = getTimeDiff(vid.published_parsed)
                 except:
                     if time != 0:
-                        video.timeStamp = "{} days".format(str(time.days))
+                        video.timeStamp = f"{str(time.days)} days"
                     else:
                         video.timeStamp = "Unknown"
 
@@ -1061,7 +1059,7 @@ def getYoutubePosts(ids):
                 video.videoTitle = vid.title
                 if config['isInstance']:
                     hostName = urllib.parse.urlparse(vid.media_thumbnail[0]['url']).netloc
-                    video.videoThumb = vid.media_thumbnail[0]['url'].replace("https://{}".format(hostName), "").replace(
+                    video.videoThumb = vid.media_thumbnail[0]['url'].replace(f"https://{hostName}", "").replace(
                         "hqdefault", "mqdefault") + "?host=" + hostName
                 else:
                     video.videoThumb = vid.media_thumbnail[0]['url'].replace('/', '~')
@@ -1070,4 +1068,4 @@ def getYoutubePosts(ids):
                 video.description = re.sub(r'^https?:\/\/.*[\r\n]*', '', video.description[0:120] + "...",
                                            flags=re.MULTILINE)
                 videos.append(video)
-    return videos
\ No newline at end of file
+    return videos
diff --git a/nitter/feed.py b/nitter/feed.py
index 6ff5fd3..eabf283 100644
--- a/nitter/feed.py
+++ b/nitter/feed.py
@@ -22,13 +22,13 @@ def get_feed(usernames, daysMaxOld=10, includeRT=True):
     '''
     feedTweets = []
     with FuturesSession() as session:
-        futures = [session.get('{instance}{user}'.format(instance=config['nitterInstance'], user=u)) for u in usernames]
+        futures = [session.get(f'{config["nitterInstance"]}{u}') for u in usernames]
         for future in as_completed(futures):
             res = future.result().content.decode('utf-8')
             html = BeautifulSoup(res, "html.parser")
             feedPosts = user.get_feed_tweets(html)
             feedTweets.append(feedPosts)
-    
+
     userFeed = []
     for feed in feedTweets:
         if not includeRT:
@@ -45,4 +45,4 @@ def get_feed(usernames, daysMaxOld=10, includeRT=True):
             userFeed.remove(uf)
     userFeed.sort(key=lambda item:item['timeStamp'], reverse=True)
     
-    return userFeed
\ No newline at end of file
+    return userFeed
diff --git a/nitter/user.py b/nitter/user.py
index 542625e..b351882 100644
--- a/nitter/user.py
+++ b/nitter/user.py
@@ -19,7 +19,7 @@ config = json.load(open('yotter-config.json'))
 config['nitterInstance']
 
 def get_user_info(username):
-    response = urllib.request.urlopen('{instance}{user}'.format(instance=config['nitterInstance'], user=username)).read()
+    response = urllib.request.urlopen(f'{config["nitterInstance"]}{username}').read()
     #rssFeed = feedparser.parse(response.content)
 
     html = BeautifulSoup(str(response), "lxml")
@@ -32,7 +32,7 @@ def get_user_info(username):
             fullName = html.find('a', attrs={'class':'profile-card-fullname'}).getText().encode('latin1').decode('unicode_escape').encode('latin1').decode('utf8')
         else:
             fullName = None
-        
+
         if html.find('div', attrs={'class':'profile-bio'}):
             profileBio = html.find('div', attrs={'class':'profile-bio'}).getText().encode('latin1').decode('unicode_escape').encode('latin1').decode('utf8')
         else:
@@ -46,12 +46,12 @@ def get_user_info(username):
             "following":html.find_all('span', attrs={'class':'profile-stat-num'})[1].string,
             "followers":numerize.numerize(int(html.find_all('span', attrs={'class':'profile-stat-num'})[2].string.replace(",",""))),
             "likes":html.find_all('span', attrs={'class':'profile-stat-num'})[3].string,
-            "profilePic":"{instance}{pic}".format(instance=config['nitterInstance'], pic=html.find('a', attrs={'class':'profile-card-avatar'})['href'][1:])
+            "profilePic":config['nitterInstance'] + html.find('a', attrs={'class':'profile-card-avatar'})['href'][1:],
         }
         return user
 
-def get_tweets(user, page=1):        
-    feed = urllib.request.urlopen('{instance}{user}'.format(instance=config['nitterInstance'], user=user)).read()
+def get_tweets(user, page=1):
+    feed = urllib.request.urlopen(f'{config["nitterInstance"]}{user}').read()
     #Gather feedPosts
     res = feed.decode('utf-8')
     html = BeautifulSoup(res, "html.parser")
@@ -59,8 +59,9 @@ def get_tweets(user, page=1):
 
     if page == 2:
         nextPage = html.find('div', attrs={'class':'show-more'}).find('a')['href']
-        print('{instance}{user}{page}'.format(instance=config['nitterInstance'], user=user, page=nextPage))
-        feed = urllib.request.urlopen('{instance}{user}{page}'.format(instance=config['nitterInstance'], user=user, page=nextPage)).read()
+        url = f'{config["nitterInstance"]}{user}{nextPage}'
+        print(url)
+        feed = urllib.request.urlopen(url).read()
         res = feed.decode('utf-8')
         html = BeautifulSoup(res, "html.parser")
         feedPosts = get_feed_tweets(html)
@@ -96,17 +97,17 @@ def get_feed_tweets(html):
             tweet['timeStamp'] = str(datetime.datetime.strptime(date_time_str, '%d/%m/%Y %H:%M:%S'))
             tweet['date'] = post.find('span', attrs={'class':'tweet-date'}).find('a').text
             tweet['content'] = Markup(yotterify(post.find('div',  attrs={'class':'tweet-content'}).decode_contents().replace("\n", "<br>")))
-            
+
             if post.find('div', attrs={'class':'retweet-header'}):
                 tweet['username'] = post.find('div', attrs={'class':'retweet-header'}).find('div', attrs={'class':'icon-container'}).text
                 tweet['isRT'] = True
             else:
                 tweet['username'] = tweet['op']
                 tweet['isRT'] = False
-            
+
             tweet['profilePic'] = config['nitterInstance']+post.find('a', attrs={'class':'tweet-avatar'}).find('img')['src'][1:]
             tweet['url'] = config['nitterInstance'] + post.find('a', attrs={'class':'tweet-link'})['href'][1:]
-            
+
             # Is quoting another tweet
             if post.find('div', attrs={'class':'quote'}):
                 tweet['isReply'] = True
@@ -123,7 +124,7 @@ def get_feed_tweets(html):
                             tweet['replyingTweetContent'] = Markup(quote.find('div',  attrs={'class':'quote-text'}).replace("\n", "<br>"))
                         except:
                             tweet['replyingTweetContent'] = Markup(quote.find('div',  attrs={'class':'quote-text'}))
-                        
+
                     if quote.find('a', attrs={'class':'still-image'}):
                         tweet['replyAttachedImages'] = []
                         images = quote.find_all('a',  attrs={'class':'still-image'})
@@ -135,7 +136,7 @@ def get_feed_tweets(html):
                     post.find('div', attrs={'class':'quote'}).decompose()
             else:
                 tweet['isReply'] = False
-            
+
             # Has attatchments
             if post.find('div',  attrs={'class':'attachments'}):
                 # Images
@@ -167,8 +168,8 @@ def get_feed_tweets(html):
                     elif 'heart' in str(stat):
                         tweet['likes'] = stat.find('div',attrs={'class':'icon-container'}).text
                     else:
-                        tweet['quotes'] =  stat.find('div',attrs={'class':'icon-container'}).text              
+                        tweet['quotes'] =  stat.find('div',attrs={'class':'icon-container'}).text
             feedPosts.append(tweet)
     else:
         return {"emptyFeed": True}
-    return feedPosts
\ No newline at end of file
+    return feedPosts
diff --git a/requirements.txt b/requirements.txt
index fe8464f..76b6e3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 alembic==1.4.3
 beautifulsoup4==4.9.3
 bleach==3.2.1
-cachetools==4.1.1
-certifi==2020.11.8
+cachetools==4.2.0
+certifi==2020.12.5
 chardet==3.0.4
 click==7.1.2
 feedparser==6.0.2
@@ -17,23 +17,23 @@ greenlet==0.4.17
 idna==2.10
 itsdangerous==1.1.0
 Jinja2==2.11.2
-lxml==4.6.1
+lxml==4.6.2
 Mako==1.1.3
 MarkupSafe==1.1.1
 numerize==0.12
-packaging==20.4
+packaging==20.8
 pyparsing==2.4.7
 PySocks==1.7.1
 python-dateutil==2.8.1
 python-dotenv==0.15.0
 python-editor==1.0.4
-requests==2.25.0
+requests==2.25.1
 requests-futures==1.0.0
 sgmllib3k==1.0.0
 six==1.15.0
 socks==0
 soupsieve==2.0.1
-SQLAlchemy==1.3.20
+SQLAlchemy==1.3.22
 urllib3==1.26.2
 webencodings==0.5.1
 Werkzeug==1.0.1
@@ -41,4 +41,4 @@ WTForms==2.3.3
 youtube-dlc==2020.11.11.post3
 youtube-search-fork==1.2.5
 zope.event==4.5.0
-zope.interface==5.1.2
+zope.interface==5.2.0
diff --git a/youtube/channel.py b/youtube/channel.py
index b1d991d..8c79773 100644
--- a/youtube/channel.py
+++ b/youtube/channel.py
@@ -258,5 +258,3 @@ def get_channel_page_general_url(base_url, tab, request, channel_id=None):
         parameters_dictionary = request.args,
         **info
     )
-
-
diff --git a/youtube/channels.py b/youtube/channels.py
index 5c45ef7..64433e3 100644
--- a/youtube/channels.py
+++ b/youtube/channels.py
@@ -155,13 +155,13 @@ def get_info_grid_video_item(item, channel=None):
         'timeStamp':published,
         'duration':duration,
         'channelName':channel['username'],
-        'authorUrl':"/channel/{}".format(channel['channelId']),
+        'authorUrl':f"/channel/{channel['channelId']}",
         'channelId':channel['channelId'],
         'id':item['videoId'],
-        'videoUrl':"/watch?v={}".format(item['videoId']),
+        'videoUrl':f"/watch?v={item['videoId']}",
         'isLive':isLive,
         'isUpcoming':isUpcoming,
-        'videoThumb':item['thumbnail']['thumbnails'][0]['url']
+        'videoThumb':item['thumbnail']['thumbnails'][0]['url'],
     }
     return video
 
@@ -172,18 +172,18 @@ def get_author_info_from_channel(content):
     channel = {
         "channelId": cmd['channelId'],
         "username": cmd['title'],
-        "thumbnail": "https:{}".format(cmd['avatar']['thumbnails'][0]['url'].replace("/", "~")),
+        "thumbnail": f"https:{cmd['avatar']['thumbnails'][0]['url'].replace('/', '~')}",
         "description":description,
         "suscribers": cmd['subscriberCountText']['runs'][0]['text'].split(" ")[0],
-        "banner": cmd['banner']['thumbnails'][0]['url']
+        "banner": cmd['banner']['thumbnails'][0]['url'],
     }
     return channel
 
 def get_channel_info(channelId, videos=True, page=1, sort=3):
     if id_or_username(channelId) == "channel":
         videos = []
-        ciUrl = "https://www.youtube.com/channel/{}".format(channelId)
-        mainUrl = "https://www.youtube.com/browse_ajax?ctoken={}".format(channel_ctoken_desktop(channelId, page, sort, "videos"))
+        ciUrl = f"https://www.youtube.com/channel/{channelId}"
+        mainUrl = f"https://www.youtube.com/browse_ajax?ctoken={channel_ctoken_desktop(channelId, page, sort, 'videos')}"
         content = json.loads(requests.get(mainUrl, headers=headers).text)
         req = requests.get(ciUrl, headers=headers).text
 
@@ -210,4 +210,4 @@ def get_channel_info(channelId, videos=True, page=1, sort=3):
             return {"channel":authorInfo}
 
     else:
-        baseUrl = "https://www.youtube.com/user/{}".format(channelId)
\ No newline at end of file
+        baseUrl = f"https://www.youtube.com/user/{channelId}"
diff --git a/youtube/comments.py b/youtube/comments.py
index a4b9df9..411f4f4 100644
--- a/youtube/comments.py
+++ b/youtube/comments.py
@@ -21,7 +21,7 @@ from youtube.util import concat_or_none
 def make_comment_ctoken(video_id, sort=0, offset=0, lc='', secret_key=''):
     video_id = proto.as_bytes(video_id)
     secret_key = proto.as_bytes(secret_key)
-    
+
 
     page_info = proto.string(4,video_id) + proto.uint(6, sort)
     offset_information = proto.nested(4, page_info) + proto.uint(5, offset)
@@ -35,11 +35,11 @@ def make_comment_ctoken(video_id, sort=0, offset=0, lc='', secret_key=''):
     result = proto.nested(2, page_params) + proto.uint(3,6) + proto.nested(6, offset_information)
     return base64.urlsafe_b64encode(result).decode('ascii')
 
-def comment_replies_ctoken(video_id, comment_id, max_results=500):  
+def comment_replies_ctoken(video_id, comment_id, max_results=500):
 
     params = proto.string(2, comment_id) + proto.uint(9, max_results)
     params = proto.nested(3, params)
-    
+
     result = proto.nested(2, proto.string(2, video_id)) + proto.uint(3,6) + proto.nested(6, params)
     return base64.urlsafe_b64encode(result).decode('ascii')
 
diff --git a/youtube/playlist.py b/youtube/playlist.py
index 2e2af98..92db2a2 100644
--- a/youtube/playlist.py
+++ b/youtube/playlist.py
@@ -14,15 +14,15 @@ import flask
 
 
 
-def playlist_ctoken(playlist_id, offset):  
-    
+def playlist_ctoken(playlist_id, offset):
+
     offset = proto.uint(1, offset)
     # this is just obfuscation as far as I can tell. It doesn't even follow protobuf
     offset = b'PT:' + proto.unpadded_b64encode(offset)
     offset = proto.string(15, offset)
 
     continuation_info = proto.string( 3, proto.percent_b64encode(offset) )
-    
+
     playlist_id = proto.string(2, 'VL' + playlist_id )
     pointless_nest = proto.string(80226972, playlist_id + continuation_info)
 
@@ -51,7 +51,7 @@ def playlist_first_page(playlist_id, report_text = "Retrieved playlist"):
     content = json.loads(util.uppercase_escape(content.decode('utf-8')))
 
     return content
-    
+
 
 #https://m.youtube.com/playlist?itct=CBMQybcCIhMIptj9xJaJ2wIV2JKcCh3Idwu-&ctoken=4qmFsgI2EiRWTFBMT3kwajlBdmxWWlB0bzZJa2pLZnB1MFNjeC0tN1BHVEMaDmVnWlFWRHBEUWxFJTNE&pbj=1
 def get_videos(playlist_id, page):
diff --git a/youtube/proto.py b/youtube/proto.py
index d966455..5fd16d5 100644
--- a/youtube/proto.py
+++ b/youtube/proto.py
@@ -5,13 +5,13 @@ import io
 def byte(n):
     return bytes((n,))
 
-    
+
 def varint_encode(offset):
     '''In this encoding system, for each 8-bit byte, the first bit is 1 if there are more bytes, and 0 is this is the last one.
     The next 7 bits are data. These 7-bit sections represent the data in Little endian order. For example, suppose the data is
     aaaaaaabbbbbbbccccccc (each of these sections is 7 bits). It will be encoded as:
     1ccccccc 1bbbbbbb 0aaaaaaa
-    
+
     This encoding is used in youtube parameters to encode offsets and to encode the length for length-prefixed data.
     See https://developers.google.com/protocol-buffers/docs/encoding#varints for more info.'''
     needed_bytes = ceil(offset.bit_length()/7) or 1 # (0).bit_length() returns 0, but we need 1 in that case.
@@ -20,20 +20,20 @@ def varint_encode(offset):
         encoded_bytes[i] = (offset & 127) | 128  # 7 least significant bits
         offset = offset >> 7
     encoded_bytes[-1] = offset & 127 # leave first bit as zero for last byte
-    
+
     return bytes(encoded_bytes)
 
-    
+
 def varint_decode(encoded):
     decoded = 0
     for i, byte in enumerate(encoded):
         decoded |= (byte & 127) << 7*i
-        
+
         if not (byte & 128):
             break
     return decoded
 
-    
+
 def string(field_number, data):
     data = as_bytes(data)
     return _proto_field(2, field_number, varint_encode(len(data)) + data)
@@ -41,20 +41,20 @@ nested = string
 
 def uint(field_number, value):
     return _proto_field(0, field_number, varint_encode(value))
-    
 
-    
-    
+
+
+
 def _proto_field(wire_type, field_number, data):
     ''' See https://developers.google.com/protocol-buffers/docs/encoding#structure '''
     return varint_encode( (field_number << 3) | wire_type) + data
 
 
-    
+
 def percent_b64encode(data):
     return base64.urlsafe_b64encode(data).replace(b'=', b'%3D')
-    
-    
+
+
 def unpadded_b64encode(data):
     return base64.urlsafe_b64encode(data).replace(b'=', b'')
 
@@ -81,7 +81,7 @@ def read_varint(data):
         i += 1
     return result
 
-                                
+
 def read_group(data, end_sequence):
     start = data.tell()
     index = data.original.find(end_sequence, start)
@@ -101,7 +101,7 @@ def read_protobuf(data):
             break
         wire_type = tag & 7
         field_number = tag >> 3
-        
+
         if wire_type == 0:
             value = read_varint(data)
         elif wire_type == 1:
diff --git a/youtube/search.py b/youtube/search.py
index 7888104..00127d4 100644
--- a/youtube/search.py
+++ b/youtube/search.py
@@ -61,7 +61,7 @@ def get_channel_renderer_item_info(item):
         suscribers = item['subscriberCountText']['simpleText'].split(" ")[0]
     except:
         suscribers = "?"
-    
+
     try:
         description = utils.get_description_snippet_text(item['descriptionSnippet']['runs'])
     except KeyError:
@@ -159,10 +159,9 @@ def get_video_renderer_item_info(item):
         'authorUrl':"/channel/{}".format(item['ownerText']['runs'][0]['navigationEndpoint']['browseEndpoint']['browseId']),
         'channelId':item['ownerText']['runs'][0]['navigationEndpoint']['browseEndpoint']['browseId'],
         'id':item['videoId'],
-        'videoUrl':"/watch?v={}".format(item['videoId']),
+        'videoUrl':f"/watch?v={item['videoId']}",
         'isLive':isLive,
         'isUpcoming':isUpcoming,
-        'videoThumb':item['thumbnail']['thumbnails'][0]['url']
+        'videoThumb':item['thumbnail']['thumbnails'][0]['url'],
     }
     return video
-
diff --git a/youtube/util.py b/youtube/util.py
index e3f6c65..4df21c1 100644
--- a/youtube/util.py
+++ b/youtube/util.py
@@ -304,7 +304,7 @@ def video_id(url):
 # default, sddefault, mqdefault, hqdefault, hq720
 def get_thumbnail_url(video_id):
     return "/i.ytimg.com/vi/" + video_id + "/mqdefault.jpg"
-    
+
 def seconds_to_timestamp(seconds):
     seconds = int(seconds)
     hours, seconds = divmod(seconds,3600)
@@ -394,4 +394,3 @@ def check_gevent_exceptions(*tasks):
     for task in tasks:
         if task.exception:
             raise task.exception
-
diff --git a/youtube/utils.py b/youtube/utils.py
index 8bc0beb..ff2fa6f 100644
--- a/youtube/utils.py
+++ b/youtube/utils.py
@@ -29,7 +29,7 @@ def parse_comment(raw_comment):
     cmnt = {}
     imgHostName = urllib.parse.urlparse(raw_comment['author_avatar'][1:]).netloc
     cmnt['author'] = raw_comment['author']
-    cmnt['thumbnail'] = raw_comment['author_avatar'].replace("https://{}".format(imgHostName),"")[1:] + "?host=" + imgHostName
+    cmnt['thumbnail'] = raw_comment['author_avatar'].replace(f"https://{imgHostName}","")[1:] + "?host=" + imgHostName
 
     print(cmnt['thumbnail'])
     cmnt['channel'] = raw_comment['author_url']
@@ -58,4 +58,4 @@ def post_process_comments_info(comments_info):
     comments = []
     for comment in comments_info['comments']:
         comments.append(parse_comment(comment))
-    return comments
\ No newline at end of file
+    return comments
diff --git a/youtube/video.py b/youtube/video.py
index 41d1e69..bf3b8a5 100644
--- a/youtube/video.py
+++ b/youtube/video.py
@@ -32,7 +32,7 @@ def get_info(url):
         video['subtitles'] = info['subtitles']
         video['duration'] = info['duration']
         video['view_count'] = info['view_count']
-        
+
         if(info['like_count'] is None):
             video['like_count'] = 0
         else:
@@ -75,4 +75,4 @@ def get_video_formats(formats, audio=False):
     if audio:
         return audio_formats
     else:
-        return best_formats
\ No newline at end of file
+        return best_formats
diff --git a/youtube/watch.py b/youtube/watch.py
index d974665..54180fe 100644
--- a/youtube/watch.py
+++ b/youtube/watch.py
@@ -266,5 +266,3 @@ def format_bytes(bytes):
     suffix = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'][exponent]
     converted = float(bytes) / float(1024 ** exponent)
     return '%.2f%s' % (converted, suffix)
-
-