diff --git a/.config.sh b/.config.sh
index cc7663648..972728c35 100644
--- a/.config.sh
+++ b/.config.sh
@@ -4,7 +4,7 @@
 #
 # This file should be edited only ones just before the installation of any
 # service is done.  After the installation of the searx service a copy of this
-# file is placed into the $SEARX_SRC of the instance, e.g.::
+# file is placed into the $SEARXNG_SRC of the instance, e.g.::
 #
 #     /usr/local/searx/searx-src/.config.sh
 #
@@ -24,7 +24,7 @@
 #     $ ./utils/searx.sh --help
 #     ---- SearXNG instance setup (already installed)
 #       SEARXNG_SETTINGS_PATH : /etc/searxng/settings.yml
-#       SEARX_SRC             : /usr/local/searx/searx-src
+#       SEARXNG_SRC           : /usr/local/searx/searx-src
 #
 # [1] https://docs.searxng.org/admin/engines/settings.html
 
diff --git a/docs/build-templates/searx.rst b/docs/build-templates/searx.rst
index 626cce6bd..0e7877ba4 100644
--- a/docs/build-templates/searx.rst
+++ b/docs/build-templates/searx.rst
@@ -1,4 +1,4 @@
-.. template evaluated by: ./utils/searx.sh docs
+.. template evaluated by: ./utils/searx.sh doc
 .. hint: all dollar-names are variables, dollar sign itself is quoted by: \\$
 
 .. START distro-packages
@@ -81,7 +81,7 @@ ${fedora_build}
     .. code-block:: sh
 
        $ sudo -H -u ${SERVICE_USER} -i
-       (${SERVICE_USER})$ git clone \"$GIT_URL\" \"$SEARX_SRC\"
+       (${SERVICE_USER})$ git clone \"$GIT_URL\" \"$SEARXNG_SRC\"
 
 .. END clone searxng
 
@@ -93,8 +93,8 @@ ${fedora_build}
 
     .. code-block:: sh
 
-       (${SERVICE_USER})$ python3 -m venv \"${SEARX_PYENV}\"
-       (${SERVICE_USER})$ echo \". ${SEARX_PYENV}/bin/activate\" >>  \"$SERVICE_HOME/.profile\"
+       (${SERVICE_USER})$ python3 -m venv \"${SEARXNG_PYENV}\"
+       (${SERVICE_USER})$ echo \". ${SEARXNG_PYENV}/bin/activate\" >>  \"$SERVICE_HOME/.profile\"
 
 .. END create virtualenv
 
@@ -109,7 +109,7 @@ ${fedora_build}
        $ sudo -H -u ${SERVICE_USER} -i
 
        (${SERVICE_USER})$ command -v python && python --version
-       $SEARX_PYENV/bin/python
+       $SEARXNG_PYENV/bin/python
        Python 3.8.1
 
        # update pip's boilerplate ..
@@ -119,7 +119,7 @@ ${fedora_build}
        pip install -U pyyaml
 
        # jump to SearXNG's working tree and install SearXNG into virtualenv
-       (${SERVICE_USER})$ cd \"$SEARX_SRC\"
+       (${SERVICE_USER})$ cd \"$SEARXNG_SRC\"
        (${SERVICE_USER})$ pip install -e .
 
 
@@ -134,7 +134,7 @@ ${fedora_build}
     .. code-block:: sh
 
        $ sudo -H mkdir -p \"$(dirname ${SEARXNG_SETTINGS_PATH})\"
-       $ sudo -H cp \"$SEARX_SRC/utils/templates/etc/searxng/settings.yml\" \\
+       $ sudo -H cp \"$SEARXNG_SRC/utils/templates/etc/searxng/settings.yml\" \\
                     \"${SEARXNG_SETTINGS_PATH}\"
 
   .. group-tab:: searx/settings.yml
@@ -142,7 +142,7 @@ ${fedora_build}
     .. code-block:: sh
 
        $ sudo -H mkdir -p \"$(dirname ${SEARXNG_SETTINGS_PATH})\"
-       $ sudo -H cp \"$SEARX_SRC/searx/settings.yml\" \\
+       $ sudo -H cp \"$SEARXNG_SRC/searx/settings.yml\" \\
                     \"${SEARXNG_SETTINGS_PATH}\"
 
 .. tabs::
@@ -168,14 +168,14 @@ ${fedora_build}
 
        # start webapp
        $ sudo -H -u ${SERVICE_USER} -i
-       (${SERVICE_USER})$ cd ${SEARX_SRC}
+       (${SERVICE_USER})$ cd ${SEARXNG_SRC}
        (${SERVICE_USER})$ export SEARXNG_SETTINGS_PATH=\"${SEARXNG_SETTINGS_PATH}\"
        (${SERVICE_USER})$ python searx/webapp.py
 
        # disable debug
        $ sudo -H sed -i -e \"s/debug : True/debug : False/g\" \"$SEARXNG_SETTINGS_PATH\"
 
-Open WEB browser and visit http://$SEARX_INTERNAL_HTTP .  If you are inside a
+Open WEB browser and visit http://$SEARXNG_INTERNAL_HTTP .  If you are inside a
 container or in a script, test with curl:
 
 .. tabs::
@@ -184,13 +184,13 @@ container or in a script, test with curl:
 
     .. code-block:: sh
 
-       $ xdg-open http://$SEARX_INTERNAL_HTTP
+       $ xdg-open http://$SEARXNG_INTERNAL_HTTP
 
   .. group-tab:: curl
 
     .. code-block:: none
 
-       $ curl --location --verbose --head --insecure $SEARX_INTERNAL_HTTP
+       $ curl --location --verbose --head --insecure $SEARXNG_INTERNAL_HTTP
 
        *   Trying 127.0.0.1:8888...
        * TCP_NODELAY set
diff --git a/utils/filtron.sh b/utils/filtron.sh
index 2536214e4..158fd55be 100755
--- a/utils/filtron.sh
+++ b/utils/filtron.sh
@@ -569,7 +569,7 @@ This installs a reverse proxy (ProxyPass) into nginx site (${NGINX_FILTRON_SITE}
     "${REPO_ROOT}/utils/searx.sh" install uwsgi
 
     # shellcheck disable=SC2034
-    SEARX_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARX_SRC)
+    SEARXNG_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_SRC)
     # shellcheck disable=SC2034
     SEARXNG_URL_PATH=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_URL_PATH)
     nginx_install_app --variant=filtron "${NGINX_FILTRON_SITE}"
diff --git a/utils/lib_install.sh b/utils/lib_install.sh
index 5d84c066f..04bec5d9a 100755
--- a/utils/lib_install.sh
+++ b/utils/lib_install.sh
@@ -8,7 +8,7 @@
 # Initialize installation procedures:
 #
 # - Modified source_dot_config function that
-#   - loads .config.sh from an existing installation (at SEARX_SRC).
+#   - loads .config.sh from an existing installation (at SEARXNG_SRC).
 #   - initialize **SEARX_SRC_INIT_FILES**
 # - functions like:
 #   - install_log_searx_instance()
@@ -25,13 +25,13 @@
 # - utils/morty.sh
 # - utils/filtron.sh
 #
-# If '${SEARX_SRC}/.config.sh' exists, the modified source_dot_config() function
+# If '${SEARXNG_SRC}/.config.sh' exists, the modified source_dot_config() function
 # loads this configuration (instead of './.config.sh').
 
 # **SEARX_SRC_INIT_FILES**
 #
-# Array of file names to sync into a installation at $SEARX_SRC.  The file names
-# are relative to the $REPO_ROOT.  Set by function init_SEARX_SRC_INIT_FILES().
+# Array of file names to sync into a installation at $SEARXNG_SRC.  The file names
+# are relative to the $REPO_ROOT.  Set by function init_SEARXNG_SRC_INIT_FILES().
 # Most often theses are files like:
 # - .config.sh
 # - searx/settings.yml
@@ -46,25 +46,25 @@ eval orig_"$(declare -f source_dot_config)"
 source_dot_config() {
 
     # Modified source_dot_config function that
-    # - loads .config.sh from an existing installation (at SEARX_SRC).
+    # - loads .config.sh from an existing installation (at SEARXNG_SRC).
     # - initialize SEARX_SRC_INIT_FILES
 
-    if [ -z "$eval_SEARX_SRC" ]; then
-        export eval_SEARX_SRC='true'
-        SEARX_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARX_SRC)
-        SEARX_PYENV=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARX_PYENV)
+    if [ -z "$eval_SEARXNG_SRC" ]; then
+        export eval_SEARXNG_SRC='true'
+        SEARXNG_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_SRC)
+        SEARXNG_PYENV=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_PYENV)
         SEARXNG_SETTINGS_PATH=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_SETTINGS_PATH)
-        if [ ! -r "${SEARX_SRC}" ]; then
-            info_msg "not yet cloned: ${SEARX_SRC}"
+        if [ ! -r "${SEARXNG_SRC}" ]; then
+            info_msg "not yet cloned: ${SEARXNG_SRC}"
             orig_source_dot_config
             return 0
         fi
-        info_msg "using instance at: ${SEARX_SRC}"
+        info_msg "using instance at: ${SEARXNG_SRC}"
 
         # set and log DOT_CONFIG
-        if [ -r "${SEARX_SRC}/.config.sh" ]; then
-            info_msg "switching to ${SEARX_SRC}/.config.sh"
-            DOT_CONFIG="${SEARX_SRC}/.config.sh"
+        if [ -r "${SEARXNG_SRC}/.config.sh" ]; then
+            info_msg "switching to ${SEARXNG_SRC}/.config.sh"
+            DOT_CONFIG="${SEARXNG_SRC}/.config.sh"
         else
             info_msg "using local config: ${DOT_CONFIG}"
         fi
@@ -86,7 +86,7 @@ init_SEARX_SRC_INIT_FILES(){
 
     # keep list empty if there is no installation
     SEARX_SRC_INIT_FILES=()
-    if [ ! -r "$SEARX_SRC" ]; then
+    if [ ! -r "$SEARXNG_SRC" ]; then
         return 0
     fi
 
@@ -104,9 +104,9 @@ init_SEARX_SRC_INIT_FILES(){
         if [ -z "$fname" ]; then
             continue
         fi
-        if [ -r "${SEARX_SRC}/${fname}" ]; then
-            # diff  "${REPO_ROOT}/${fname}" "${SEARX_SRC}/${fname}"
-            if ! cmp --silent "${REPO_ROOT}/${fname}" "${SEARX_SRC}/${fname}"; then
+        if [ -r "${SEARXNG_SRC}/${fname}" ]; then
+            # diff  "${REPO_ROOT}/${fname}" "${SEARXNG_SRC}/${fname}"
+            if ! cmp --silent "${REPO_ROOT}/${fname}" "${SEARXNG_SRC}/${fname}"; then
                 SEARX_SRC_INIT_FILES+=("${fname}")
                 info_msg "local clone (workingtree), modified file: ./$fname"
                 msg="to update use:  sudo -H ./utils/searx.sh install init-src"
@@ -120,8 +120,8 @@ install_log_searx_instance() {
 
     echo -e "---- SearXNG instance setup ${_BBlue}(status: $(install_searx_get_state))${_creset}"
     echo -e "  SEARXNG_SETTINGS_PATH : ${_BBlue}${SEARXNG_SETTINGS_PATH}${_creset}"
-    echo -e "  SEARX_PYENV         : ${_BBlue}${SEARX_PYENV}${_creset}"
-    echo -e "  SEARX_SRC           : ${_BBlue}${SEARX_SRC:-none}${_creset}"
+    echo -e "  SEARXNG_PYENV         : ${_BBlue}${SEARXNG_PYENV}${_creset}"
+    echo -e "  SEARXNG_SRC           : ${_BBlue}${SEARXNG_SRC:-none}${_creset}"
     echo -e "  SEARXNG_URL         : ${_BBlue}${SEARXNG_URL:-none}${_creset}"
 
     if in_container; then
@@ -148,26 +148,26 @@ install_searx_get_state(){
     # Prompts a string indicating the status of the installation procedure
     #
     # missing-searx-clone:
-    #    There is no clone at ${SEARX_SRC}
+    #    There is no clone at ${SEARXNG_SRC}
     # missing-searx-pyenv:
-    #    There is no pyenv in ${SEARX_PYENV}
+    #    There is no pyenv in ${SEARXNG_PYENV}
     # installer-modified:
     #    There are files modified locally in the installer (clone),
     #    see ${SEARX_SRC_INIT_FILES} description.
     # python-installed:
     #    Scripts can be executed in instance's environment
     #    - user:  ${SERVICE_USER}
-    #    - pyenv: ${SEARX_PYENV}
+    #    - pyenv: ${SEARXNG_PYENV}
 
     if [ -f /etc/searx/settings.yml ]; then
         err_msg "settings.yml in /etc/searx/ is deprecated, move file to folder /etc/searxng/"
     fi
 
-    if ! [ -r "${SEARX_SRC}" ]; then
+    if ! [ -r "${SEARXNG_SRC}" ]; then
         echo "missing-searx-clone"
         return
     fi
-    if ! [ -f "${SEARX_PYENV}/bin/activate" ]; then
+    if ! [ -f "${SEARXNG_PYENV}/bin/activate" ]; then
         echo "missing-searx-pyenv"
         return
     fi
diff --git a/utils/morty.sh b/utils/morty.sh
index c4e7bdf52..28b76947e 100755
--- a/utils/morty.sh
+++ b/utils/morty.sh
@@ -502,7 +502,7 @@ This installs a reverse proxy (ProxyPass) into nginx site (${NGINX_MORTY_SITE})"
     "${REPO_ROOT}/utils/searx.sh" install uwsgi
 
     # shellcheck disable=SC2034
-    SEARX_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARX_SRC)
+    SEARXNG_SRC=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_SRC)
     # shellcheck disable=SC2034
     SEARXNG_URL_PATH=$("${REPO_ROOT}/utils/searx.sh" --getenv SEARXNG_URL_PATH)
     nginx_install_app "${NGINX_MORTY_SITE}"
diff --git a/utils/searx.sh b/utils/searx.sh
index ce118ed77..af925e810 100755
--- a/utils/searx.sh
+++ b/utils/searx.sh
@@ -12,7 +12,7 @@ source "${REPO_ROOT}/utils/lib_install.sh"
 # config
 # ----------------------------------------------------------------------------
 
-SEARX_INTERNAL_HTTP="${SEARXNG_BIND_ADDRESS}:${SEARXNG_PORT}"
+SEARXNG_INTERNAL_HTTP="${SEARXNG_BIND_ADDRESS}:${SEARXNG_PORT}"
 
 SEARXNG_URL_PATH="${SEARXNG_URL_PATH:-$(echo "${PUBLIC_URL}" \
 | sed -e 's,^.*://[^/]*\(/.*\),\1,g')}"
@@ -26,12 +26,14 @@ SERVICE_HOME="${SERVICE_HOME_BASE}/${SERVICE_USER}"
 SERVICE_GROUP="${SERVICE_USER}"
 
 GIT_BRANCH="${GIT_BRANCH:-master}"
-SEARX_PYENV="${SERVICE_HOME}/searx-pyenv"
-SEARX_SRC="${SERVICE_HOME}/searx-src"
+SEARXNG_PYENV="${SERVICE_HOME}/searx-pyenv"
+SEARXNG_SRC="${SERVICE_HOME}/searx-src"
+# shellcheck disable=SC2034
+SEARXNG_STATIC="${SEARXNG_SRC}/searx/static"
 SEARXNG_SETTINGS_PATH="/etc/searxng/settings.yml"
 SEARXNG_UWSGI_APP="searxng.ini"
 # shellcheck disable=SC2034
-SEARX_UWSGI_SOCKET="/run/uwsgi/app/searxng/socket"
+SEARXNG_UWSGI_SOCKET="/run/uwsgi/app/searxng/socket"
 
 # apt packages
 SEARX_PACKAGES_debian="\
@@ -153,10 +155,10 @@ shell
 install / remove
   :all:        complete (de-) installation of SearXNG service
   :user:       add/remove service user '$SERVICE_USER' ($SERVICE_HOME)
-  :dot-config: copy ./config.sh to ${SEARX_SRC}
+  :dot-config: copy ./config.sh to ${SEARXNG_SRC}
   :searx-src:  clone $GIT_URL
-  :init-src:   copy files (SEARX_SRC_INIT_FILES) to ${SEARX_SRC}
-  :pyenv:      create/remove virtualenv (python) in $SEARX_PYENV
+  :init-src:   copy files (SEARXNG_SRC_INIT_FILES) to ${SEARXNG_SRC}
+  :pyenv:      create/remove virtualenv (python) in $SEARXNG_PYENV
   :uwsgi:      install SearXNG uWSGI application
   :settings:   reinstall settings from ${SEARXNG_SETTINGS_PATH}
   :packages:   install needed packages from OS package manager
@@ -173,7 +175,7 @@ deactivate service
   stop and deactivate service daemon (systemd unit)
 inspect
   :service:    run some small tests and inspect service's status and log
-  :settings:   inspect YAML setting <key> from SearXNG instance (${SEARX_SRC})
+  :settings:   inspect YAML setting <key> from SearXNG instance (${SEARXNG_SRC})
 option
   set one of the available options
 apache
@@ -267,8 +269,8 @@ main() {
                     rst_title "SearXNG (install uwsgi)"
                     verify_continue_install
                     install_searx_uwsgi
-                    if ! service_is_available "http://${SEARX_INTERNAL_HTTP}"; then
-                        err_msg "URL http://${SEARX_INTERNAL_HTTP} not available, check SearXNG & uwsgi setup!"
+                    if ! service_is_available "http://${SEARXNG_INTERNAL_HTTP}"; then
+                        err_msg "URL http://${SEARXNG_INTERNAL_HTTP} not available, check SearXNG & uwsgi setup!"
                     fi
                     ;;
                 packages)
@@ -355,8 +357,8 @@ install_all() {
     test_local_searx
     wait_key
     install_searx_uwsgi
-    if ! service_is_available "http://${SEARX_INTERNAL_HTTP}"; then
-        err_msg "URL http://${SEARX_INTERNAL_HTTP} not available, check SearXNG & uwsgi setup!"
+    if ! service_is_available "http://${SEARXNG_INTERNAL_HTTP}"; then
+        err_msg "URL http://${SEARXNG_INTERNAL_HTTP} not available, check SearXNG & uwsgi setup!"
     fi
     if ask_yn "Do you want to inspect the installation?" Ny; then
         inspect_service
@@ -391,7 +393,7 @@ install_check() {
     uWSGI_app_available "$SEARXNG_UWSGI_APP" \
         || err_msg "uWSGI app $SEARXNG_UWSGI_APP not available!"
 
-    sudo -H -u "${SERVICE_USER}" "${SEARX_PYENV}/bin/python" "utils/searxng_check.py"
+    sudo -H -u "${SERVICE_USER}" "${SEARXNG_PYENV}/bin/python" "utils/searxng_check.py"
 
     if uWSGI_app_available 'searx.ini'; then
         warn_msg "old searx.ini uWSGI app exists"
@@ -404,7 +406,7 @@ update_searx() {
 
     rst_para "fetch from $GIT_URL and reset to origin/$GIT_BRANCH"
     tee_stderr 0.3 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 git fetch origin "$GIT_BRANCH"
 git reset --hard "origin/$GIT_BRANCH"
 pip install -U pip
@@ -458,7 +460,7 @@ EOF
 }
 
 clone_is_available() {
-    [[ -f "$SEARX_SRC/.git/config" ]]
+    [[ -f "$SEARXNG_SRC/.git/config" ]]
 }
 
 # shellcheck disable=SC2164
@@ -482,12 +484,12 @@ clone_searx() {
         warn_msg "take into account, installing branch $GIT_BRANCH while current branch is $(git rev-parse --abbrev-ref HEAD)"
     fi
     export SERVICE_HOME
-    git_clone "$REPO_ROOT" "$SEARX_SRC" \
+    git_clone "$REPO_ROOT" "$SEARXNG_SRC" \
               "$GIT_BRANCH" "$SERVICE_USER"
 
-    pushd "${SEARX_SRC}" > /dev/null
+    pushd "${SEARXNG_SRC}" > /dev/null
     tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 | prefix_stdout "$_service_prefix"
-cd "${SEARX_SRC}"
+cd "${SEARXNG_SRC}"
 git remote set-url origin ${GIT_URL}
 git config user.email "$ADMIN_EMAIL"
 git config user.name "$ADMIN_NAME"
@@ -509,7 +511,7 @@ prompt_installation_status(){
             return 0
             ;;
         *)
-            info_msg "SearXNG instance already installed at: $SEARX_SRC"
+            info_msg "SearXNG instance already installed at: $SEARXNG_SRC"
             info_msg "status:  ${_BBlue}$(install_searx_get_state)${_creset} "
             branch="$(git name-rev --name-only HEAD)"
             remote="$(git config branch."${branch}".remote)"
@@ -549,7 +551,7 @@ prompt_installation_setting(){
     _state="$(install_searx_get_state)"
     case $_state in
         python-installed|installer-modified)
-            sudo -H -u "${SERVICE_USER}" "${SEARX_PYENV}/bin/python" <<EOF
+            sudo -H -u "${SERVICE_USER}" "${SEARXNG_PYENV}/bin/python" <<EOF
 import sys
 from searx import get_setting
 name = "${1}"
@@ -578,7 +580,7 @@ get_installed_version_variables() {
     _state="$(install_searx_get_state)"
     case $_state in
         python-installed|installer-modified)
-            sudo -H -u "${SERVICE_USER}" "${SEARX_PYENV}/bin/python" -m searx.version;;
+            sudo -H -u "${SERVICE_USER}" "${SEARXNG_PYENV}/bin/python" -m searx.version;;
         *)
             return 42
             ;;
@@ -586,7 +588,7 @@ get_installed_version_variables() {
 }
 
 init_SEARX_SRC(){
-    rst_title "Update instance: ${SEARX_SRC}/" section
+    rst_title "Update instance: ${SEARXNG_SRC}/" section
 
     if ! clone_is_available; then
         err_msg "you have to install SearXNG first"
@@ -624,19 +626,19 @@ init_SEARX_SRC(){
                     break
                     ;;
                 "replace file")
-                    info_msg "copy: ${REPO_ROOT}/${fname} --> ${SEARX_SRC}/${fname}"
-                    cp "${REPO_ROOT}/${fname}" "${SEARX_SRC}/${fname}"
+                    info_msg "copy: ${REPO_ROOT}/${fname} --> ${SEARXNG_SRC}/${fname}"
+                    cp "${REPO_ROOT}/${fname}" "${SEARXNG_SRC}/${fname}"
                     break
                     ;;
                 "diff files")
-                    $DIFF_CMD "${SEARX_SRC}/${fname}" "${REPO_ROOT}/${fname}"
+                    $DIFF_CMD "${SEARXNG_SRC}/${fname}" "${REPO_ROOT}/${fname}"
                     ;;
                 "interactive shell")
-                    backup_file "${SEARX_SRC}/${fname}"
+                    backup_file "${SEARXNG_SRC}/${fname}"
                     echo -e "// edit ${_Red}${dst}${_creset} to your needs"
                     echo -e "// exit with [${_BCyan}CTRL-D${_creset}]"
                     sudo -H -u "${SERVICE_USER}" -i
-                    $DIFF_CMD "${SEARX_SRC}/${fname}"  "${REPO_ROOT}/${fname}"
+                    $DIFF_CMD "${SEARXNG_SRC}/${fname}"  "${REPO_ROOT}/${fname}"
                     echo
                     echo -e "// ${_BBlack}did you edit file ...${_creset}"
                     echo -en "//  ${_Red}${dst}${_creset}"
@@ -650,19 +652,19 @@ init_SEARX_SRC(){
 }
 
 install_DOT_CONFIG(){
-    rst_title "Update instance: ${SEARX_SRC}/.config.sh" section
+    rst_title "Update instance: ${SEARXNG_SRC}/.config.sh" section
 
-    if cmp --silent "${REPO_ROOT}/.config.sh" "${SEARX_SRC}/.config.sh"; then
-        info_msg "${SEARX_SRC}/.config.sh is up to date"
+    if cmp --silent "${REPO_ROOT}/.config.sh" "${SEARXNG_SRC}/.config.sh"; then
+        info_msg "${SEARXNG_SRC}/.config.sh is up to date"
         return 0
     fi
 
-    diff "${REPO_ROOT}/.config.sh" "${SEARX_SRC}/.config.sh"
+    diff "${REPO_ROOT}/.config.sh" "${SEARXNG_SRC}/.config.sh"
     if ! ask_yn "Do you want to copy file .config.sh into instance?" Yn; then
         return 42
     fi
-    backup_file "${SEARX_SRC}/.config.sh"
-    cp "${REPO_ROOT}/.config.sh" "${SEARX_SRC}/.config.sh"
+    backup_file "${SEARXNG_SRC}/.config.sh"
+    cp "${REPO_ROOT}/.config.sh" "${SEARXNG_SRC}/.config.sh"
 }
 
 install_settings() {
@@ -689,30 +691,30 @@ remove_settings() {
 
 remove_searx() {
     rst_title "Drop SearXNG sources" section
-    if ask_yn "Do you really want to drop SearXNG sources ($SEARX_SRC)?"; then
-        rm -rf "$SEARX_SRC"
+    if ask_yn "Do you really want to drop SearXNG sources ($SEARXNG_SRC)?"; then
+        rm -rf "$SEARXNG_SRC"
     else
         rst_para "Leave SearXNG sources unchanged."
     fi
 }
 
 pyenv_is_available() {
-    [[ -f "${SEARX_PYENV}/bin/activate" ]]
+    [[ -f "${SEARXNG_PYENV}/bin/activate" ]]
 }
 
 create_pyenv() {
     rst_title "Create virtualenv (python)" section
     echo
-    if [[ ! -f "${SEARX_SRC}/manage" ]]; then
+    if [[ ! -f "${SEARXNG_SRC}/manage" ]]; then
         err_msg "to create pyenv for SearXNG, SearXNG has to be cloned first"
         return 42
     fi
-    info_msg "create pyenv in ${SEARX_PYENV}"
+    info_msg "create pyenv in ${SEARXNG_PYENV}"
     tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 |  prefix_stdout "$_service_prefix"
-rm -rf "${SEARX_PYENV}"
-python3 -m venv "${SEARX_PYENV}"
-grep -qFs -- 'source ${SEARX_PYENV}/bin/activate' ~/.profile \
-  || echo 'source ${SEARX_PYENV}/bin/activate' >> ~/.profile
+rm -rf "${SEARXNG_PYENV}"
+python3 -m venv "${SEARXNG_PYENV}"
+grep -qFs -- 'source ${SEARXNG_PYENV}/bin/activate' ~/.profile \
+  || echo 'source ${SEARXNG_PYENV}/bin/activate' >> ~/.profile
 EOF
     info_msg "inspect python's virtual environment"
     tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 |  prefix_stdout "$_service_prefix"
@@ -725,22 +727,22 @@ pip install -U pip
 pip install -U setuptools
 pip install -U wheel
 pip install -U pyyaml
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 pip install -e .
 EOF
 }
 
 remove_pyenv() {
     rst_title "Remove virtualenv (python)" section
-    if ! ask_yn "Do you really want to drop ${SEARX_PYENV} ?"; then
+    if ! ask_yn "Do you really want to drop ${SEARXNG_PYENV} ?"; then
         return
     fi
     info_msg "remove pyenv activation from ~/.profile"
     tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 |  prefix_stdout "$_service_prefix"
-grep -v 'source ${SEARX_PYENV}/bin/activate' ~/.profile > ~/.profile.##
+grep -v 'source ${SEARXNG_PYENV}/bin/activate' ~/.profile > ~/.profile.##
 mv ~/.profile.## ~/.profile
 EOF
-    rm -rf "${SEARX_PYENV}"
+    rm -rf "${SEARXNG_PYENV}"
 }
 
 configure_searx() {
@@ -748,7 +750,7 @@ configure_searx() {
     rst_para "Setup SearXNG config located at $SEARXNG_SETTINGS_PATH"
     echo
     tee_stderr 0.1 <<EOF | sudo -H -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 sed -i -e "s/ultrasecretkey/$(openssl rand -hex 16)/g" "$SEARXNG_SETTINGS_PATH"
 EOF
 }
@@ -757,8 +759,8 @@ test_local_searx() {
     rst_title "Testing SearXNG instance localy" section
     echo
 
-    if service_is_available "http://${SEARX_INTERNAL_HTTP}" &>/dev/null; then
-        err_msg "URL/port http://${SEARX_INTERNAL_HTTP} is already in use, you"
+    if service_is_available "http://${SEARXNG_INTERNAL_HTTP}" &>/dev/null; then
+        err_msg "URL/port http://${SEARXNG_INTERNAL_HTTP} is already in use, you"
         err_msg "should stop that service before starting local tests!"
         if ! ask_yn "Continue with local tests?"; then
             return
@@ -767,10 +769,10 @@ test_local_searx() {
     sed -i -e "s/debug: false/debug: true/g" "$SEARXNG_SETTINGS_PATH"
     tee_stderr 0.1 <<EOF | sudo -H -u "${SERVICE_USER}" -i 2>&1 |  prefix_stdout "$_service_prefix"
 export SEARXNG_SETTINGS_PATH="${SEARXNG_SETTINGS_PATH}"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 timeout 10 python searx/webapp.py &
 sleep 3
-curl --location --verbose --head --insecure $SEARX_INTERNAL_HTTP
+curl --location --verbose --head --insecure $SEARXNG_INTERNAL_HTTP
 EOF
     sed -i -e "s/debug: true/debug: false/g" "$SEARXNG_SETTINGS_PATH"
 }
@@ -805,7 +807,7 @@ deactivate_service() {
 enable_image_proxy() {
     info_msg "try to enable image_proxy ..."
     tee_stderr 0.1 <<EOF | sudo -H -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 sed -i -e "s/image_proxy: false/image_proxy: true/g" "$SEARXNG_SETTINGS_PATH"
 EOF
     uWSGI_restart "$SEARXNG_UWSGI_APP"
@@ -814,7 +816,7 @@ EOF
 disable_image_proxy() {
     info_msg "try to enable image_proxy ..."
     tee_stderr 0.1 <<EOF | sudo -H -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 sed -i -e "s/image_proxy: true/image_proxy: false/g" "$SEARXNG_SETTINGS_PATH"
 EOF
     uWSGI_restart "$SEARXNG_UWSGI_APP"
@@ -824,7 +826,7 @@ enable_debug() {
     warn_msg "Do not enable debug in production environments!!"
     info_msg "try to enable debug mode ..."
     tee_stderr 0.1 <<EOF | sudo -H -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 sed -i -e "s/debug: false/debug: true/g" "$SEARXNG_SETTINGS_PATH"
 EOF
     uWSGI_restart "$SEARXNG_UWSGI_APP"
@@ -833,7 +835,7 @@ EOF
 disable_debug() {
     info_msg "try to disable debug mode ..."
     tee_stderr 0.1 <<EOF | sudo -H -i 2>&1 |  prefix_stdout "$_service_prefix"
-cd ${SEARX_SRC}
+cd ${SEARXNG_SRC}
 sed -i -e "s/debug: true/debug: false/g" "$SEARXNG_SETTINGS_PATH"
 EOF
     uWSGI_restart "$SEARXNG_UWSGI_APP"
@@ -903,11 +905,11 @@ EOF
         lxc_suite_info
     else
         info_msg "public URL   --> ${PUBLIC_URL}"
-        info_msg "internal URL --> http://${SEARX_INTERNAL_HTTP}"
+        info_msg "internal URL --> http://${SEARXNG_INTERNAL_HTTP}"
     fi
 
-    if ! service_is_available "http://${SEARX_INTERNAL_HTTP}"; then
-        err_msg "uWSGI app (service) at http://${SEARX_INTERNAL_HTTP} is not available!"
+    if ! service_is_available "http://${SEARXNG_INTERNAL_HTTP}"; then
+        err_msg "uWSGI app (service) at http://${SEARXNG_INTERNAL_HTTP} is not available!"
         MSG="${_Green}[${_BCyan}CTRL-C${_Green}] to stop or [${_BCyan}KEY${_Green}] to continue"\
            wait_key
     fi
diff --git a/utils/templates/etc/httpd/sites-available/searxng.conf:uwsgi b/utils/templates/etc/httpd/sites-available/searxng.conf:uwsgi
index aabc125ae..1e4ee4123 100644
--- a/utils/templates/etc/httpd/sites-available/searxng.conf:uwsgi
+++ b/utils/templates/etc/httpd/sites-available/searxng.conf:uwsgi
@@ -3,8 +3,8 @@
 LoadModule headers_module       ${APACHE_MODULES}/mod_headers.so
 LoadModule proxy_module         ${APACHE_MODULES}/mod_proxy.so
 LoadModule proxy_uwsgi_module   ${APACHE_MODULES}/mod_proxy_uwsgi.so
-# LoadModule setenvif_module ${APACHE_MODULES}/mod_setenvif.so
-
+# LoadModule setenvif_module      ${APACHE_MODULES}/mod_setenvif.so
+#
 # SetEnvIf Request_URI "${SEARXNG_URL_PATH}" dontlog
 # CustomLog /dev/null combined env=dontlog
 
@@ -22,6 +22,13 @@ LoadModule proxy_uwsgi_module   ${APACHE_MODULES}/mod_proxy_uwsgi.so
     Allow from all
 
     ProxyPreserveHost On
-    ProxyPass unix:${SEARX_UWSGI_SOCKET}|uwsgi://uwsgi-uds-searx/
+    ProxyPass unix:${SEARXNG_UWSGI_SOCKET}|uwsgi://uwsgi-uds-searx/
 
 </Location>
+
+# uWSGI serves the static files and in settings.yml we use::
+#
+#   ui:
+#     static_use_hash: true
+#
+# Alias ${SEARXNG_URL_PATH}/static/ ${SEARXNG_STATIC}/
diff --git a/utils/templates/etc/nginx/default.apps-available/searxng.conf:filtron b/utils/templates/etc/nginx/default.apps-available/searxng.conf:filtron
index e25461c47..631f2b265 100644
--- a/utils/templates/etc/nginx/default.apps-available/searxng.conf:filtron
+++ b/utils/templates/etc/nginx/default.apps-available/searxng.conf:filtron
@@ -12,5 +12,5 @@ location ${SEARXNG_URL_PATH} {
 }
 
 location ${SEARXNG_URL_PATH}/static/ {
-    alias ${SEARX_SRC}/searx/static/;
+    alias ${SEARXNG_STATIC}/;
 }
diff --git a/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini b/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini
index aaf55a807..931746306 100644
--- a/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini
+++ b/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini
@@ -16,7 +16,7 @@ env = LANGUAGE=C.UTF-8
 env = LC_ALL=C.UTF-8
 
 # chdir to specified directory before apps loading
-chdir = ${SEARX_SRC}/searx
+chdir = ${SEARXNG_SRC}/searx
 
 # SearXNG configuration (settings.yml)
 env = SEARXNG_SETTINGS_PATH=${SEARXNG_SETTINGS_PATH}
@@ -57,10 +57,10 @@ enable-threads = true
 module = searx.webapp
 
 # set PYTHONHOME/virtualenv
-virtualenv = ${SEARX_PYENV}
+virtualenv = ${SEARXNG_PYENV}
 
 # add directory (or glob) to pythonpath
-pythonpath = ${SEARX_SRC}
+pythonpath = ${SEARXNG_SRC}
 
 
 # speak to upstream
@@ -74,20 +74,20 @@ pythonpath = ${SEARX_SRC}
 # https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-http
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
-http = ${SEARX_INTERNAL_HTTP}
+http = ${SEARXNG_INTERNAL_HTTP}
 
 # using unix-sockets:
 #
-# On some distributions you need to create the app folder for the sockets::
+# Don't forget to create the folder where the sockets should take place::
 #
-#   mkdir -p ${SEARX_UWSGI_SOCKET}
-#   chown -R ${SERVICE_USER}:${SERVICE_GROUP}  ${SEARX_UWSGI_SOCKET}
+#   mkdir -p "$(dirname ${SEARXNG_UWSGI_SOCKET})"
+#   chown -R "${SERVICE_USER}:${SERVICE_GROUP}" "$(dirname ${SEARXNG_UWSGI_SOCKET})"
 #
-# socket = ${SEARX_UWSGI_SOCKET}
+# socket = ${SEARXNG_UWSGI_SOCKET}
 
 # uwsgi serves the static files
 # expires set to one year since there are hashes
-static-map = /static=${SEARX_SRC}/searx/static
+static-map = /static=${SEARXNG_STATIC}
 static-expires = /* 31557600
 static-gzip-all = True
 offload-threads = %k
diff --git a/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini:socket b/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini:socket
index e8facda86..158973140 100644
--- a/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini:socket
+++ b/utils/templates/etc/uwsgi/apps-archlinux/searxng.ini:socket
@@ -16,7 +16,7 @@ env = LANGUAGE=C.UTF-8
 env = LC_ALL=C.UTF-8
 
 # chdir to specified directory before apps loading
-chdir = ${SEARX_SRC}/searx
+chdir = ${SEARXNG_SRC}/searx
 
 # SearXNG configuration (settings.yml)
 env = SEARXNG_SETTINGS_PATH=${SEARXNG_SETTINGS_PATH}
@@ -57,10 +57,10 @@ enable-threads = true
 module = searx.webapp
 
 # set PYTHONHOME/virtualenv
-virtualenv = ${SEARX_PYENV}
+virtualenv = ${SEARXNG_PYENV}
 
 # add directory (or glob) to pythonpath
-pythonpath = ${SEARX_SRC}
+pythonpath = ${SEARXNG_SRC}
 
 
 # speak to upstream
@@ -74,20 +74,24 @@ pythonpath = ${SEARX_SRC}
 # https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-http
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
-# http = ${SEARX_INTERNAL_HTTP}
+# http = ${SEARXNG_INTERNAL_HTTP}
 
 # using unix-sockets:
 #
-# On some distributions you need to create the app folder for the sockets::
+# Don't forget to create the folder where the sockets should take place::
 #
-#   mkdir -p ${SEARX_UWSGI_SOCKET}
-#   chown -R ${SERVICE_USER}:${SERVICE_GROUP} ${SEARX_UWSGI_SOCKET}
+#   mkdir -p "$(dirname ${SEARXNG_UWSGI_SOCKET})"
+#   chown -R "${SERVICE_USER}:${SERVICE_GROUP}" "$(dirname ${SEARXNG_UWSGI_SOCKET})"
 #
-socket = ${SEARX_UWSGI_SOCKET}
+socket = ${SEARXNG_UWSGI_SOCKET}
 
-# uwsgi serves the static files
+# uWSGI serves the static files and in settings.yml we use::
+#
+#   ui:
+#     static_use_hash: true
+#
+static-map = /static=${SEARXNG_STATIC}
 # expires set to one year since there are hashes
-static-map = /static=${SEARX_SRC}/searx/static
 static-expires = /* 31557600
 static-gzip-all = True
 offload-threads = %k
diff --git a/utils/templates/etc/uwsgi/apps-available/searxng.ini b/utils/templates/etc/uwsgi/apps-available/searxng.ini
index 9dad84c16..1926b446d 100644
--- a/utils/templates/etc/uwsgi/apps-available/searxng.ini
+++ b/utils/templates/etc/uwsgi/apps-available/searxng.ini
@@ -16,7 +16,7 @@ env = LANGUAGE=C.UTF-8
 env = LC_ALL=C.UTF-8
 
 # chdir to specified directory before apps loading
-chdir = ${SEARX_SRC}/searx
+chdir = ${SEARXNG_SRC}/searx
 
 # SearXNG configuration (settings.yml)
 env = SEARXNG_SETTINGS_PATH=${SEARXNG_SETTINGS_PATH}
@@ -56,10 +56,10 @@ enable-threads = true
 module = searx.webapp
 
 # set PYTHONHOME/virtualenv
-virtualenv = ${SEARX_PYENV}
+virtualenv = ${SEARXNG_PYENV}
 
 # add directory (or glob) to pythonpath
-pythonpath = ${SEARX_SRC}
+pythonpath = ${SEARXNG_SRC}
 
 
 # speak to upstream
@@ -73,20 +73,20 @@ pythonpath = ${SEARX_SRC}
 # https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-http
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
-http = ${SEARX_INTERNAL_HTTP}
+http = ${SEARXNG_INTERNAL_HTTP}
 
 # using unix-sockets:
 #
-# On some distributions you need to create the app folder for the sockets::
+# Don't forget to create the folder where the sockets should take place::
 #
-#   mkdir -p /run/uwsgi/app/searxng
-#   chown -R ${SERVICE_USER}:${SERVICE_GROUP} ${SEARX_UWSGI_SOCKET}
+#   mkdir -p "$(dirname ${SEARXNG_UWSGI_SOCKET})"
+#   chown -R "${SERVICE_USER}:${SERVICE_GROUP}" "$(dirname ${SEARXNG_UWSGI_SOCKET})"
 #
-# socket = ${SEARX_UWSGI_SOCKET}
+# socket = ${SEARXNG_UWSGI_SOCKET}
 
 # uwsgi serves the static files
 # expires set to one year since there are hashes
-static-map = /static=${SEARX_SRC}/searx/static
+static-map = /static=${SEARXNG_STATIC}
 static-expires = /* 31557600
 static-gzip-all = True
 offload-threads = %k
diff --git a/utils/templates/etc/uwsgi/apps-available/searxng.ini:socket b/utils/templates/etc/uwsgi/apps-available/searxng.ini:socket
index c76d084e1..796d18b8e 100644
--- a/utils/templates/etc/uwsgi/apps-available/searxng.ini:socket
+++ b/utils/templates/etc/uwsgi/apps-available/searxng.ini:socket
@@ -16,7 +16,7 @@ env = LANGUAGE=C.UTF-8
 env = LC_ALL=C.UTF-8
 
 # chdir to specified directory before apps loading
-chdir = ${SEARX_SRC}/searx
+chdir = ${SEARXNG_SRC}/searx
 
 # SearXNG configuration (settings.yml)
 env = SEARXNG_SETTINGS_PATH=${SEARXNG_SETTINGS_PATH}
@@ -56,10 +56,10 @@ enable-threads = true
 module = searx.webapp
 
 # set PYTHONHOME/virtualenv
-virtualenv = ${SEARX_PYENV}
+virtualenv = ${SEARXNG_PYENV}
 
 # add directory (or glob) to pythonpath
-pythonpath = ${SEARX_SRC}
+pythonpath = ${SEARXNG_SRC}
 
 
 # speak to upstream
@@ -73,20 +73,24 @@ pythonpath = ${SEARX_SRC}
 # https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-http
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
-# http = ${SEARX_INTERNAL_HTTP}
+# http = ${SEARXNG_INTERNAL_HTTP}
 
 # using unix-sockets:
 #
-# On some distributions you need to create the app folder for the sockets::
+# Don't forget to create the folder where the sockets should take place::
 #
-#   mkdir -p ${SEARX_UWSGI_SOCKET}
-#   chown -R ${SERVICE_USER}:${SERVICE_GROUP} ${SEARX_UWSGI_SOCKET}
+#   mkdir -p "$(dirname ${SEARXNG_UWSGI_SOCKET})"
+#   chown -R "${SERVICE_USER}:${SERVICE_GROUP}" "$(dirname ${SEARXNG_UWSGI_SOCKET})"
 #
-socket = ${SEARX_UWSGI_SOCKET}
+socket = ${SEARXNG_UWSGI_SOCKET}
 
-# uwsgi serves the static files
+# uWSGI serves the static files and in settings.yml we use::
+#
+#   ui:
+#     static_use_hash: true
+#
+static-map = /static=${SEARXNG_STATIC}
 # expires set to one year since there are hashes
-static-map = /static=${SEARX_SRC}/searx/static
 static-expires = /* 31557600
 static-gzip-all = True
 offload-threads = %k