diff --git a/src/webui/api/appcontroller.cpp b/src/webui/api/appcontroller.cpp
index d0097dd61..99533388b 100644
--- a/src/webui/api/appcontroller.cpp
+++ b/src/webui/api/appcontroller.cpp
@@ -107,6 +107,19 @@ void AppController::preferencesAction()
 
     QJsonObject data;
 
+    // Behavior
+    // Language
+    data[u"locale"_qs] = pref->getLocale();
+    data[u"performance_warning"_qs] = session->isPerformanceWarningEnabled();
+    // Log file
+    data[u"file_log_enabled"_qs] = app()->isFileLoggerEnabled();
+    data[u"file_log_path"_qs] = app()->fileLoggerPath().toString();
+    data[u"file_log_backup_enabled"_qs] = app()->isFileLoggerBackup();
+    data[u"file_log_max_size"_qs] = app()->fileLoggerMaxSize() / 1024;
+    data[u"file_log_delete_old"_qs] = app()->isFileLoggerDeleteOld();
+    data[u"file_log_age"_qs] = app()->fileLoggerAge();
+    data[u"file_log_age_type"_qs] = app()->fileLoggerAgeType();
+
     // Downloads
     // When adding a torrent
     data[u"torrent_content_layout"_qs] = Utils::String::fromEnum(session->torrentContentLayout());
@@ -247,9 +260,6 @@ void AppController::preferencesAction()
     data[u"add_trackers"_qs] = session->additionalTrackers();
 
     // Web UI
-    // Language
-    data[u"locale"_qs] = pref->getLocale();
-    data[u"performance_warning"_qs] = session->isPerformanceWarningEnabled();
     // HTTP Server
     data[u"web_ui_domain_list"_qs] = pref->getServerDomains();
     data[u"web_ui_address"_qs] = pref->getWebUiAddress();
@@ -411,6 +421,45 @@ void AppController::setPreferencesAction()
         return (it != m.constEnd());
     };
 
+    // Behavior
+    // Language
+    if (hasKey(u"locale"_qs))
+    {
+        QString locale = it.value().toString();
+        if (pref->getLocale() != locale)
+        {
+            auto *translator = new QTranslator;
+            if (translator->load(u":/lang/qbittorrent_"_qs + locale))
+            {
+                qDebug("%s locale recognized, using translation.", qUtf8Printable(locale));
+            }
+            else
+            {
+                qDebug("%s locale unrecognized, using default (en).", qUtf8Printable(locale));
+            }
+            qApp->installTranslator(translator);
+
+            pref->setLocale(locale);
+        }
+    }
+    if (hasKey(u"performance_warning"_qs))
+        session->setPerformanceWarningEnabled(it.value().toBool());
+    // Log file
+    if (hasKey(u"file_log_enabled"_qs))
+        app()->setFileLoggerEnabled(it.value().toBool());
+    if (hasKey(u"file_log_path"_qs))
+        app()->setFileLoggerPath(Path(it.value().toString()));
+    if (hasKey(u"file_log_backup_enabled"_qs))
+        app()->setFileLoggerBackup(it.value().toBool());
+    if (hasKey(u"file_log_max_size"_qs))
+        app()->setFileLoggerMaxSize(it.value().toInt() * 1024);
+    if (hasKey(u"file_log_delete_old"_qs))
+        app()->setFileLoggerDeleteOld(it.value().toBool());
+    if (hasKey(u"file_log_age"_qs))
+        app()->setFileLoggerAge(it.value().toInt());
+    if (hasKey(u"file_log_age_type"_qs))
+        app()->setFileLoggerAgeType(it.value().toInt());
+
     // Downloads
     // When adding a torrent
     if (hasKey(u"torrent_content_layout"_qs))
@@ -673,28 +722,6 @@ void AppController::setPreferencesAction()
         session->setAdditionalTrackers(it.value().toString());
 
     // Web UI
-    // Language
-    if (hasKey(u"locale"_qs))
-    {
-        QString locale = it.value().toString();
-        if (pref->getLocale() != locale)
-        {
-            auto *translator = new QTranslator;
-            if (translator->load(u":/lang/qbittorrent_"_qs + locale))
-            {
-                qDebug("%s locale recognized, using translation.", qUtf8Printable(locale));
-            }
-            else
-            {
-                qDebug("%s locale unrecognized, using default (en).", qUtf8Printable(locale));
-            }
-            qApp->installTranslator(translator);
-
-            pref->setLocale(locale);
-        }
-    }
-    if (hasKey(u"performance_warning"_qs))
-        session->setPerformanceWarningEnabled(it.value().toBool());
     // HTTP Server
     if (hasKey(u"web_ui_domain_list"_qs))
         pref->setServerDomains(it.value().toString());
diff --git a/src/webui/webapplication.h b/src/webui/webapplication.h
index bba270496..b4351002e 100644
--- a/src/webui/webapplication.h
+++ b/src/webui/webapplication.h
@@ -52,7 +52,7 @@
 #include "base/utils/version.h"
 #include "api/isessionmanager.h"
 
-inline const Utils::Version<3, 2> API_VERSION {2, 8, 19};
+inline const Utils::Version<3, 2> API_VERSION {2, 8, 20};
 
 class APIController;
 class AuthController;
diff --git a/src/webui/www/private/views/preferences.html b/src/webui/www/private/views/preferences.html
index 3c3634431..fca47c2b9 100644
--- a/src/webui/www/private/views/preferences.html
+++ b/src/webui/www/private/views/preferences.html
@@ -1,4 +1,49 @@
-<div id="DownloadsTab" class="PrefTab">
+<div id="BehaviorTab" class="PrefTab">
+    <fieldset class="settings">
+        <legend>QBT_TR(Language)QBT_TR[CONTEXT=OptionsDialog]</legend>
+        <label for="locale_select">QBT_TR(User Interface Language:)QBT_TR[CONTEXT=OptionsDialog]</label>
+        <select id="locale_select">
+            ${LANGUAGE_OPTIONS}
+        </select>
+    </fieldset>
+
+    <fieldset class="settings">
+        <legend>
+            <input type="checkbox" id="filelog_checkbox" onclick="qBittorrent.Preferences.updateFileLogEnabled();" />
+            <label for="filelog_checkbox">QBT_TR(Log file)QBT_TR[CONTEXT=OptionsDialog]</label>
+        </legend>
+        <div class="formRow">
+            <label for="filelog_save_path_input">QBT_TR(Save path:)QBT_TR[CONTEXT=OptionsDialog]</label>
+            <input type="text" id="filelog_save_path_input" />
+        </div>
+        <table>
+            <tr>
+                <td><input type="checkbox" id="filelog_backup_checkbox" onclick="qBittorrent.Preferences.updateFileLogBackupEnabled();" /></td>
+                <td><label for="filelog_backup_checkbox">QBT_TR(Backup the log file after:)QBT_TR[CONTEXT=OptionsDialog]</label></td>
+                <td><input id="filelog_max_size_input" type=number min="1" max="1024000" value="65" onchange="qBittorrent.Preferences.numberInputLimiter(this);" />QBT_TR(KiB)QBT_TR[CONTEXT=OptionsDialog]</td>
+            </tr>
+            <tr>
+                <td><input type="checkbox" id="filelog_delete_old_checkbox" onclick="qBittorrent.Preferences.updateFileLogDeleteEnabled();" /></td>
+                <td><label for="filelog_delete_old_checkbox">QBT_TR(Delete backup logs older than:)QBT_TR[CONTEXT=OptionsDialog]</label></td>
+                <td>
+                    <input type=number min="1" max="365" value="6" id="filelog_age_input" onchange="qBittorrent.Preferences.numberInputLimiter(this);" />
+                    <select id="filelog_age_type_select">
+                        <option value="0">QBT_TR(days)QBT_TR[CONTEXT=OptionsDialog]</option>
+                        <option value="1" selected>QBT_TR(months)QBT_TR[CONTEXT=OptionsDialog]</option>
+                        <option value="2">QBT_TR(years)QBT_TR[CONTEXT=OptionsDialog]</option>
+                    </select>
+                </td>
+            </tr>
+        </table>
+    </fieldset>
+
+    <div class="formRow">
+        <input type="checkbox" id="performanceWarning" />
+        <label for="performanceWarning">QBT_TR(Log performance warnings)QBT_TR[CONTEXT=OptionsDialog]</label>
+    </div>
+</div>
+
+<div id="DownloadsTab" class="PrefTab invisible">
     <fieldset class="settings">
         <legend>QBT_TR(When adding a torrent)QBT_TR[CONTEXT=OptionsDialog]</legend>
         <div class="formRow">
@@ -662,19 +707,6 @@
 </div>
 
 <div id="WebUITab" class="PrefTab invisible">
-    <fieldset class="settings">
-        <legend>QBT_TR(Language)QBT_TR[CONTEXT=OptionsDialog]</legend>
-        <label for="locale_select">QBT_TR(User Interface Language:)QBT_TR[CONTEXT=OptionsDialog]</label>
-        <select id="locale_select">
-            ${LANGUAGE_OPTIONS}
-        </select>
-    </fieldset>
-
-    <div class="formRow">
-        <input type="checkbox" id="performanceWarning" />
-        <label for="performanceWarning">QBT_TR(Log performance warnings)QBT_TR[CONTEXT=OptionsDialog]</label>
-    </div>
-
     <fieldset class="settings">
         <legend>QBT_TR(Web User Interface (Remote control))QBT_TR[CONTEXT=OptionsDialog]</legend>
         <table>
@@ -1334,6 +1366,10 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
     window.qBittorrent.Preferences = (function() {
         const exports = function() {
             return {
+                numberInputLimiter: numberInputLimiter,
+                updateFileLogEnabled: updateFileLogEnabled,
+                updateFileLogBackupEnabled: updateFileLogBackupEnabled,
+                updateFileLogDeleteEnabled: updateFileLogDeleteEnabled,
                 updateTempDirEnabled: updateTempDirEnabled,
                 updateExportDirEnabled: updateExportDirEnabled,
                 updateExportDirFinEnabled: updateExportDirFinEnabled,
@@ -1370,6 +1406,39 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
             };
         };
 
+        // Behavior tab
+        const numberInputLimiter = (input) => {
+            const min = input.getAttribute("min");
+            const max = input.getAttribute("max");
+
+            if (min && input.value.toInt() < min.toInt())
+                input.value = min;
+
+            if (max && input.value.toInt() > max.toInt())
+                input.value = max;
+        };
+
+        const updateFileLogEnabled = function() {
+            const isFileLogEnabled = $('filelog_checkbox').getProperty('checked');
+            $('filelog_save_path_input').setProperty('disabled', !isFileLogEnabled);
+            $('filelog_backup_checkbox').setProperty('disabled', !isFileLogEnabled);
+            $('filelog_delete_old_checkbox').setProperty('disabled', !isFileLogEnabled);
+
+            updateFileLogBackupEnabled();
+            updateFileLogDeleteEnabled();
+        };
+
+        const updateFileLogBackupEnabled = function() {
+            const pros = $('filelog_backup_checkbox').getProperties('disabled', 'checked');
+            $('filelog_max_size_input').setProperty('disabled', pros.disabled || !pros.checked);
+        };
+
+        const updateFileLogDeleteEnabled = function() {
+            const pros = $('filelog_delete_old_checkbox').getProperties('disabled', 'checked');
+            $('filelog_age_input').setProperty('disabled', pros.disabled || !pros.checked);
+            $('filelog_age_type_select').setProperty('disabled', pros.disabled || !pros.checked);
+        };
+
         // Downloads tab
         const watchedFoldersTable = new HtmlTable($("watched_folders_tab"));
 
@@ -1717,6 +1786,16 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                 },
                 onSuccess: function(pref) {
                     if (pref) {
+                        // Behavior tab
+                        $('filelog_checkbox').setProperty('checked', pref.file_log_enabled);
+                        $('filelog_save_path_input').setProperty('value', pref.file_log_path);
+                        $('filelog_backup_checkbox').setProperty('checked', pref.file_log_backup_enabled);
+                        $('filelog_max_size_input').setProperty('value', pref.file_log_max_size);
+                        $('filelog_delete_old_checkbox').setProperty('checked', pref.file_log_delete_old);
+                        $('filelog_age_input').setProperty('value', pref.file_log_age);
+                        $('filelog_age_type_select').setProperty('value', pref.file_log_age_type);
+                        updateFileLogEnabled();
+
                         // Downloads tab
                         // When adding a torrent
                         let index = 0;
@@ -2097,6 +2176,16 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
         const applyPreferences = function() {
             const settings = new Hash();
             // Validate form data
+
+            // Behavior tab
+            settings.set('file_log_enabled', $('filelog_checkbox').getProperty('checked'));
+            settings.set('file_log_path', $('filelog_save_path_input').getProperty('value'));
+            settings.set('file_log_backup_enabled', $('filelog_backup_checkbox').getProperty('checked'));
+            settings.set('file_log_max_size', $('filelog_max_size_input').getProperty('value'));
+            settings.set('file_log_delete_old', $('filelog_delete_old_checkbox').getProperty('checked'));
+            settings.set('file_log_age', $('filelog_age_input').getProperty('value'));
+            settings.set('file_log_age_type', $('filelog_age_type_select').getProperty('value'));
+
             // Downloads tab
             // When adding a torrent
             settings.set('torrent_content_layout', $('contentlayout_select').getSelected()[0].getProperty('value'));
diff --git a/src/webui/www/private/views/preferencesToolbar.html b/src/webui/www/private/views/preferencesToolbar.html
index 0775173d1..6d271ad33 100644
--- a/src/webui/www/private/views/preferencesToolbar.html
+++ b/src/webui/www/private/views/preferencesToolbar.html
@@ -1,7 +1,8 @@
 <!-- preferences -->
 <div class="toolbarTabs">
     <ul id="preferencesTabs" class="tab-menu">
-        <li id="PrefDownloadsLink" class="selected"><a>QBT_TR(Downloads)QBT_TR[CONTEXT=OptionsDialog]</a></li>
+        <li id="PrefBehaviorLink" class="selected"><a>QBT_TR(Behavior)QBT_TR[CONTEXT=OptionsDialog]</a></li>
+        <li id="PrefDownloadsLink"><a>QBT_TR(Downloads)QBT_TR[CONTEXT=OptionsDialog]</a></li>
         <li id="PrefConnectionLink"><a>QBT_TR(Connection)QBT_TR[CONTEXT=OptionsDialog]</a></li>
         <li id="PrefSpeedLink"><a>QBT_TR(Speed)QBT_TR[CONTEXT=OptionsDialog]</a></li>
         <li id="PrefBittorrentLink"><a>QBT_TR(BitTorrent)QBT_TR[CONTEXT=OptionsDialog]</a></li>
@@ -19,6 +20,10 @@
         // Tabs
         MochaUI.initializeTabs('preferencesTabs');
 
+        $('PrefBehaviorLink').addEvent('click', function(e) {
+            $$('.PrefTab').addClass('invisible');
+            $('BehaviorTab').removeClass('invisible');
+        });
         $('PrefDownloadsLink').addEvent('click', function(e) {
             $$('.PrefTab').addClass('invisible');
             $('DownloadsTab').removeClass('invisible');