diff --git a/conf/config.yaml b/conf/config.yaml
index 8de7d54..c0a42bc 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -188,22 +188,22 @@ accounts-reason-required: __REGISTRATION_REASON__
 # Int. Maximum allowed image upload size in bytes.
 # Examples: [2097152, 10485760]
 # Default: 2097152 -- aka 2MB
-media-image-max-size: 2097152
+media-image-max-size: __MEDIA_IMAGE_MAX_SIZE__
 
 # Int. Maximum allowed video upload size in bytes.
 # Examples: [2097152, 10485760]
 # Default: 10485760 -- aka 10MB
-media-video-max-size: 10485760
+media-video-max-size: __MEDIA_VIDEO_MAX_SIZE__
 
 # Int. Minimum amount of characters required as an image or video description.
 # Examples: [500, 1000, 1500]
 # Default: 0 (not required)
-media-description-min-chars: 0
+media-description-min-chars: __MEDIA_DESCRIPTION_MIN_CHARS__
 
 # Int. Maximum amount of characters permitted in an image or video description.
 # Examples: [500, 1000, 1500]
 # Default: 500
-media-description-max-chars: 500
+media-description-max-chars: __MEDIA_DESCRIPTION_MAX_CHARS__
 
 # Int. Number of days to cache media from remote instances before they are removed from the cache.
 # A job will run every day at midnight to clean up any remote media older than the given amount of days.
@@ -214,7 +214,7 @@ media-description-max-chars: 500
 # If this is set to 0, then media from remote instances will be cached indefinitely.
 # Examples: [30, 60, 7, 0]
 # Default: 30
-media-remote-cache-days: 30
+media-remote-cache-days: __MEDIA_REMOTE_CACHE_DAYS__
 
 ##########################
 ##### STORAGE CONFIG #####
@@ -245,31 +245,31 @@ storage-local-base-path: "__DATADIR__"
 # Note that going way higher than the default might break federation.
 # Examples: [140, 500, 5000]
 # Default: 5000
-statuses-max-chars: 5000
+statuses-max-chars: __STATUSES_MAX_CHARS__
 
 # Int. Maximum amount of characters allowed in the CW/subject header of a status.
 # Note that going way higher than the default might break federation.
 # Examples: [100, 200]
 # Default: 100
-statuses-cw-max-chars: 100
+statuses-cw-max-chars: __STATUSES_CW_MAX_CHARS__
 
 # Int. Maximum amount of options to permit when creating a new poll.
 # Note that going way higher than the default might break federation.
 # Examples: [4, 6, 10]
 # Default: 6
-statuses-poll-max-options: 6
+statuses-poll-max-options: __STATUSES_POLL_MAX_OPTIONS__
 
 # Int. Maximum amount of characters to permit per poll option when creating a new poll.
 # Note that going way higher than the default might break federation.
 # Examples: [50, 100, 150]
 # Default: 50
-statuses-poll-option-max-chars: 50
+statuses-poll-option-max-chars: __STATUSES_POLL_OPTION_MAX_OPTIONS__
 
 # Int. Maximum amount of media files that can be attached to a new status.
 # Note that going way higher than the default might break federation.
 # Examples: [4, 6, 10]
 # Default: 6
-statuses-media-max-files: 6
+statuses-media-max-files: __STATUSES_MEDIA_MAX_FILES__
 
 ##############################
 ##### LETSENCRYPT CONFIG #####
diff --git a/scripts/install b/scripts/install
index a9a21b8..c601a92 100755
--- a/scripts/install
+++ b/scripts/install
@@ -33,10 +33,24 @@ admin=$YNH_APP_ARG_ADMIN
 email=$YNH_APP_ARG_EMAIL
 password=$YNH_APP_ARG_PASSWORD
 
+# Config stuff:
+
 registration_open=$YNH_APP_ARG_REGISTRATION_OPEN
 registration_approval=$YNH_APP_ARG_REGISTRATION_APPROVAL
 registration_reason=$YNH_APP_ARG_REGISTRATION_REASON
 
+media-image-max-size="2097152"
+media-video-max-size="10485760"
+media-description-min-chars="0"
+media-description-max-chars="500"
+media-remote-cache-days="30"
+
+statuses-max-chars="5000"
+statuses-cw-max-chars="100"
+statuses-poll-max-options="6"
+statuses-poll-option-max-chars="50"
+statuses-media-max-files="6"
+
 ### If it's a multi-instance app, meaning it can be installed several times independently
 ### The id of the app as stated in the manifest is available as $YNH_APP_ID
 ### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2"...)
@@ -90,6 +104,18 @@ ynh_app_setting_set --app=$app --key=registration_open --value=$registration_ope
 ynh_app_setting_set --app=$app --key=registration_approval --value=$registration_approval
 ynh_app_setting_set --app=$app --key=registration_reason --value=$registration_reason
 
+ynh_app_setting_set --app=$app --key=media_image_max_size --value=$media_image_max_size
+ynh_app_setting_set --app=$app --key=media_video_max_size --value=$media_video_max_size
+ynh_app_setting_set --app=$app --key=media_description_min_chars --value=$media_description_min_chars
+ynh_app_setting_set --app=$app --key=media_description_max_chars --value=$media_description_max_chars
+ynh_app_setting_set --app=$app --key=media_remote_cache_days --value=$media_remote_cache_days
+
+ynh_app_setting_set --app=$app --key=statuses_max_chars --value=$statuses_max_chars
+ynh_app_setting_set --app=$app --key=statuses_cw_max_chars --value=$statuses_cw_max_chars
+ynh_app_setting_set --app=$app --key=statuses_poll_max_options --value=$statuses_poll_max_options
+ynh_app_setting_set --app=$app --key=statuses_poll_option_max_chars --value=$statuses_poll_option_max_chars
+ynh_app_setting_set --app=$app --key=statuses_media_max_files --value=$statuses_media_max_files
+
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index a93652b..ed15ecd 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -40,11 +40,23 @@ db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)
 
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+
 registration_open=$(ynh_app_setting_get --app=$app --key=registration_open)
 registration_approval=$(ynh_app_setting_get --app=$app --key=registration_approval)
 registration_reason=$(ynh_app_setting_get --app=$app --key=registration_reason)
 
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+media_image_max_size=$(ynh_app_setting_get --app=$app --key=media_image_max_size)
+media_video_max_size=$(ynh_app_setting_get --app=$app --key=media_video_max_size)
+media_description_min_chars=$(ynh_app_setting_get --app=$app --key=media_description_min_chars)
+media_description_max_chars=$(ynh_app_setting_get --app=$app --key=media_description_max_chars)
+media_remote_cache_days=$(ynh_app_setting_get --app=$app --key=media_remote_cache_days)
+
+statuses_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_max_chars)
+statuses_cw_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_cw_max_chars)
+statuses_poll_max_options=$(ynh_app_setting_get --app=$app --key=statuses_poll_max_options)
+statuses_poll_option_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_poll_option_max_chars)
+statuses_media_max_files=$(ynh_app_setting_get --app=$app --key=statuses_media_max_files)
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
diff --git a/scripts/upgrade b/scripts/upgrade
index 3eb5678..ffa5d3e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -28,11 +28,23 @@ db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$(ynh_app_setting_get --app=$app --key=db_user)
 db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)
 
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+
 registration_open=$(ynh_app_setting_get --app=$app --key=registration_open)
 registration_approval=$(ynh_app_setting_get --app=$app --key=registration_approval)
 registration_reason=$(ynh_app_setting_get --app=$app --key=registration_reason)
 
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+media_image_max_size=$(ynh_app_setting_get --app=$app --key=media_image_max_size)
+media_video_max_size=$(ynh_app_setting_get --app=$app --key=media_video_max_size)
+media_description_min_chars=$(ynh_app_setting_get --app=$app --key=media_description_min_chars)
+media_description_max_chars=$(ynh_app_setting_get --app=$app --key=media_description_max_chars)
+media_remote_cache_days=$(ynh_app_setting_get --app=$app --key=media_remote_cache_days)
+
+statuses_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_max_chars)
+statuses_cw_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_cw_max_chars)
+statuses_poll_max_options=$(ynh_app_setting_get --app=$app --key=statuses_poll_max_options)
+statuses_poll_option_max_chars=$(ynh_app_setting_get --app=$app --key=statuses_poll_option_max_chars)
+statuses_media_max_files=$(ynh_app_setting_get --app=$app --key=statuses_media_max_files)
 
 #=================================================
 # CHECK VERSION
@@ -75,11 +87,50 @@ ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app
 ynh_script_progression --message="Ensuring downward compatibility..."
 
 # Upgrade from <0.2.1~ynh4:
-# If client_max_body_size doesn't exist, create it
 if [ -z "$client_max_body_size" ]; then
 	client_max_body_size="50M"
 	ynh_app_setting_set --app=$app --key=client_max_body_size --value=$client_max_body_size
 fi
+if [ -z "$client_max_body_size" ]; then
+	media-image-max-size="2097152"
+	ynh_app_setting_set --app=$app --key=media_image_max_size --value=$media_image_max_size
+fi
+if [ -z "$client_max_body_size" ]; then
+	media-video-max-size="10485760"
+	ynh_app_setting_set --app=$app --key=media_video_max_size --value=$media_video_max_size
+fi
+if [ -z "$client_max_body_size" ]; then
+	media-description-min-chars="0"
+	ynh_app_setting_set --app=$app --key=media_description_min_chars --value=$media_description_min_chars
+fi
+if [ -z "$client_max_body_size" ]; then
+	media-description-max-chars="500"
+	ynh_app_setting_set --app=$app --key=media_description_max_chars --value=$media_description_max_chars
+fi
+if [ -z "$client_max_body_size" ]; then
+	media-remote-cache-days="30"
+	ynh_app_setting_set --app=$app --key=media_remote_cache_days --value=$media_remote_cache_days
+fi
+if [ -z "$client_max_body_size" ]; then
+	statuses-max-chars="5000"
+	ynh_app_setting_set --app=$app --key=statuses_max_chars --value=$statuses_max_chars
+fi
+if [ -z "$client_max_body_size" ]; then
+	statuses-cw-max-chars="100"
+	ynh_app_setting_set --app=$app --key=statuses_cw_max_chars --value=$statuses_cw_max_chars
+fi
+if [ -z "$client_max_body_size" ]; then
+	statuses-poll-max-options="6"
+	ynh_app_setting_set --app=$app --key=statuses_poll_max_options --value=$statuses_poll_max_options
+fi
+if [ -z "$client_max_body_size" ]; then
+	statuses-poll-option-max-chars="50"
+	ynh_app_setting_set --app=$app --key=statuses_poll_option_max_chars --value=$statuses_poll_option_max_chars
+fi
+if [ -z "$client_max_body_size" ]; then
+	statuses-media-max-files="6"
+	ynh_app_setting_set --app=$app --key=statuses_media_max_files --value=$statuses_media_max_files
+fi
 
 #=================================================
 # CREATE DEDICATED USER