diff --git a/app/views/auth/index.phtml b/app/views/auth/index.phtml
index f7a862ac9..8e4df8c2c 100644
--- a/app/views/auth/index.phtml
+++ b/app/views/auth/index.phtml
@@ -9,7 +9,7 @@
 		<div class="form-group">
 			<label class="group-name" for="auth_type"><?php echo _t('admin.auth.type'); ?></label>
 			<div class="group-controls">
-				<select id="auth_type" name="auth_type" required="required">
+				<select id="auth_type" name="auth_type" required="required" data-leave-validation="<?php echo FreshRSS_Context::$system_conf->auth_type; ?>">
 					<?php if (!in_array(FreshRSS_Context::$system_conf->auth_type, array('form', 'persona', 'http_auth', 'none'))) { ?>
 						<option selected="selected"></option>
 					<?php } ?>
@@ -25,7 +25,7 @@
 			<div class="group-controls">
 				<label class="checkbox" for="anon_access">
 					<input type="checkbox" name="anon_access" id="anon_access" value="1"<?php echo FreshRSS_Context::$system_conf->allow_anonymous ? ' checked="checked"' : '',
-						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> />
+						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> data-leave-validation="<?php echo FreshRSS_Context::$system_conf->allow_anonymous; ?>"/>
 					<?php echo _t('admin.auth.allow_anonymous', FreshRSS_Context::$system_conf->default_user); ?>
 				</label>
 			</div>
@@ -35,7 +35,7 @@
 			<div class="group-controls">
 				<label class="checkbox" for="anon_refresh">
 					<input type="checkbox" name="anon_refresh" id="anon_refresh" value="1"<?php echo FreshRSS_Context::$system_conf->allow_anonymous_refresh ? ' checked="checked"' : '',
-						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> />
+						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> data-leave-validation="<?php echo FreshRSS_Context::$system_conf->allow_anonymous_refresh; ?>"/>
 					<?php echo _t('admin.auth.allow_anonymous_refresh'); ?>
 				</label>
 			</div>
@@ -45,7 +45,7 @@
 			<div class="group-controls">
 				<label class="checkbox" for="unsafe_autologin">
 					<input type="checkbox" name="unsafe_autologin" id="unsafe_autologin" value="1"<?php echo FreshRSS_Context::$system_conf->unsafe_autologin_enabled ? ' checked="checked"' : '',
-						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> />
+						FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> data-leave-validation="<?php echo FreshRSS_Context::$system_conf->unsafe_autologin_enabled; ?>"/>
 					<?php echo _t('admin.auth.unsafe_autologin'); ?>
 					<kbd><?php echo Minz_Url::display(array('c' => 'auth', 'a' => 'login', 'params' => array('u' => 'alice', 'p' => '1234')), 'html', true); ?></kbd>
 				</label>
@@ -58,7 +58,7 @@
 			<?php $token = FreshRSS_Context::$user_conf->token; ?>
 			<div class="group-controls">
 				<input type="text" id="token" name="token" value="<?php echo $token; ?>" placeholder="<?php echo _t('gen.short.blank_to_disable'); ?>"<?php
-					echo FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> />
+					echo FreshRSS_Auth::accessNeedsAction() ? '' : ' disabled="disabled"'; ?> data-leave-validation="<?php echo $token; ?>"/>
 				<?php echo _i('help'); ?> <?php echo _t('admin.auth.token_help'); ?>
 				<kbd><?php echo Minz_Url::display(array('params' => array('output' => 'rss', 'token' => $token)), 'html', true); ?></kbd>
 			</div>
@@ -69,7 +69,7 @@
 			<div class="group-controls">
 				<label class="checkbox" for="api_enabled">
 					<input type="checkbox" name="api_enabled" id="api_enabled" value="1"<?php echo FreshRSS_Context::$system_conf->api_enabled ? ' checked="checked"' : '',
-						FreshRSS_Auth::accessNeedsLogin() ? '' : ' disabled="disabled"'; ?> />
+						FreshRSS_Auth::accessNeedsLogin() ? '' : ' disabled="disabled"'; ?> data-leave-validation="<?php echo FreshRSS_Context::$system_conf->api_enabled; ?>"/>
 					<?php echo _t('admin.auth.api_enabled'); ?>
 				</label>
 			</div>
diff --git a/app/views/configure/archiving.phtml b/app/views/configure/archiving.phtml
index 875463137..52ee98a48 100644
--- a/app/views/configure/archiving.phtml
+++ b/app/views/configure/archiving.phtml
@@ -10,14 +10,14 @@
 		<div class="form-group">
 			<label class="group-name" for="old_entries"><?php echo _t('conf.archiving.delete_after'); ?></label>
 			<div class="group-controls">
-				<input type="number" id="old_entries" name="old_entries" min="1" max="1200" value="<?php echo FreshRSS_Context::$user_conf->old_entries; ?>" /> <?php echo _t('gen.date.month'); ?>
+				<input type="number" id="old_entries" name="old_entries" min="1" max="1200" value="<?php echo FreshRSS_Context::$user_conf->old_entries; ?>" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->old_entries; ?>"/> <?php echo _t('gen.date.month'); ?>
 				  <a class="btn confirm" href="<?php echo _url('entry', 'purge'); ?>"><?php echo _t('conf.archiving.purge_now'); ?></a>
 			</div>
 		</div>
 		<div class="form-group">
 			<label class="group-name" for="keep_history_default"><?php echo _t('conf.archiving.keep_history_by_feed'); ?></label>
 			<div class="group-controls">
-				<select class="number" name="keep_history_default" id="keep_history_default" required="required"><?php
+				<select class="number" name="keep_history_default" id="keep_history_default" required="required" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->keep_history_default; ?>"><?php
 					foreach (array('' => '', 0 => '0', 10 => '10', 50 => '50', 100 => '100', 500 => '500', 1000 => '1 000', 5000 => '5 000', 10000 => '10 000', -1 => '∞') as $v => $t) {
 						echo '<option value="' . $v . (FreshRSS_Context::$user_conf->keep_history_default == $v ? '" selected="selected' : '') . '">' . $t . ' </option>';
 					}
@@ -27,7 +27,7 @@
 		<div class="form-group">
 			<label class="group-name" for="ttl_default"><?php echo _t('conf.archiving.ttl'); ?></label>
 			<div class="group-controls">
-				<select class="number" name="ttl_default" id="ttl_default" required="required"><?php
+				<select class="number" name="ttl_default" id="ttl_default" required="required" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->ttl_default; ?>"><?php
 					$found = false;
 					foreach (array(1200 => '20min', 1500 => '25min', 1800 => '30min', 2700 => '45min',
 					                3600 => '1h', 5400 => '1.5h', 7200 => '2h', 10800 => '3h', 14400 => '4h', 18800 => '5h', 21600 => '6h', 25200 => '7h', 28800 => '8h',
diff --git a/app/views/configure/display.phtml b/app/views/configure/display.phtml
index 02249bc55..91b0b8189 100644
--- a/app/views/configure/display.phtml
+++ b/app/views/configure/display.phtml
@@ -9,7 +9,7 @@
 		<div class="form-group">
 			<label class="group-name" for="language"><?php echo _t('conf.display.language'); ?></label>
 			<div class="group-controls">
-				<select name="language" id="language">
+				<select name="language" id="language" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->language; ?>">
 				<?php $languages = Minz_Translate::availableLanguages(); ?>
 				<?php foreach ($languages as $lang) { ?>
 				<option value="<?php echo $lang; ?>"<?php echo FreshRSS_Context::$user_conf->language === $lang ? ' selected="selected"' : ''; ?>><?php echo _t('gen.lang.' . $lang); ?></option>
@@ -24,7 +24,7 @@
 				<ul class="slides">
 					<?php $slides = count($this->themes); $i = 1; ?>
 					<?php foreach($this->themes as $theme) { ?>
-						<input type="radio" name="theme" id="img-<?php echo $i ?>" <?php if (FreshRSS_Context::$user_conf->theme === $theme['id']) {echo "checked";}?> value="<?php echo $theme['id'] ?>"/>
+						<input type="radio" name="theme" id="img-<?php echo $i ?>" <?php if (FreshRSS_Context::$user_conf->theme === $theme['id']) {echo "checked";}?> value="<?php echo $theme['id'] ?>" data-leave-validation="<?php echo (FreshRSS_Context::$user_conf->theme === $theme['id']) ? 1 : 0; ?>"/>
 						<li class="slide-container">
 							<div class="slide">
 								<img src="<?php echo Minz_Url::display('/themes/' . $theme['id'] . '/thumbs/original.png')?>"/>
@@ -53,7 +53,7 @@
 		<div class="form-group">
 			<label class="group-name" for="content_width"><?php echo _t('conf.display.width.content'); ?></label>
 			<div class="group-controls">
-				<select name="content_width" id="content_width" required="">
+				<select name="content_width" id="content_width" required="" data-leave-validation="<?php echo $width; ?>">
 					<option value="thin" <?php echo $width === 'thin'? 'selected="selected"' : ''; ?>>
 						<?php echo _t('conf.display.width.thin'); ?>
 					</option>
@@ -87,20 +87,20 @@
 				<tbody>
 					<tr>
 						<th><?php echo _t('conf.display.icon.top_line'); ?></th>
-						<td><input type="checkbox" name="topline_read" value="1"<?php echo FreshRSS_Context::$user_conf->topline_read ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="topline_favorite" value="1"<?php echo FreshRSS_Context::$user_conf->topline_favorite ? ' checked="checked"' : ''; ?> /></td>
+						<td><input type="checkbox" name="topline_read" value="1"<?php echo FreshRSS_Context::$user_conf->topline_read ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->topline_read; ?>"/></td>
+						<td><input type="checkbox" name="topline_favorite" value="1"<?php echo FreshRSS_Context::$user_conf->topline_favorite ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->topline_favorite; ?>"/></td>
 						<td><input type="checkbox" disabled="disabled" /></td>
 						<td><input type="checkbox" disabled="disabled" /></td>
-						<td><input type="checkbox" name="topline_date" value="1"<?php echo FreshRSS_Context::$user_conf->topline_date ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="topline_link" value="1"<?php echo FreshRSS_Context::$user_conf->topline_link ? ' checked="checked"' : ''; ?> /></td>
+						<td><input type="checkbox" name="topline_date" value="1"<?php echo FreshRSS_Context::$user_conf->topline_date ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->topline_date; ?>"/></td>
+						<td><input type="checkbox" name="topline_link" value="1"<?php echo FreshRSS_Context::$user_conf->topline_link ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->topline_link; ?>"/></td>
 					</tr><tr>
 						<th><?php echo _t('conf.display.icon.bottom_line'); ?></th>
-						<td><input type="checkbox" name="bottomline_read" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_read ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="bottomline_favorite" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_favorite ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="bottomline_sharing" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_sharing ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="bottomline_tags" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_tags ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="bottomline_date" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_date ? ' checked="checked"' : ''; ?> /></td>
-						<td><input type="checkbox" name="bottomline_link" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_link ? ' checked="checked"' : ''; ?> /></td>
+						<td><input type="checkbox" name="bottomline_read" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_read ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_read; ?>"/></td>
+						<td><input type="checkbox" name="bottomline_favorite" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_favorite ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_favorite; ?>"/></td>
+						<td><input type="checkbox" name="bottomline_sharing" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_sharing ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_sharing; ?>"/></td>
+						<td><input type="checkbox" name="bottomline_tags" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_tags ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_tags; ?>"/></td>
+						<td><input type="checkbox" name="bottomline_date" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_date ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_date; ?>"/></td>
+						<td><input type="checkbox" name="bottomline_link" value="1"<?php echo FreshRSS_Context::$user_conf->bottomline_link ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->bottomline_link; ?>"/></td>
 					</tr>
 				</tbody>
 			</table><br />
@@ -109,7 +109,7 @@
 		<div class="form-group">
 			<label class="group-name" for="posts_per_page"><?php echo _t('conf.display.notif_html5.timeout'); ?></label>
 			<div class="group-controls">
-				<input type="number" id="html5_notif_timeout" name="html5_notif_timeout" value="<?php echo FreshRSS_Context::$user_conf->html5_notif_timeout; ?>" /> <?php echo _t('conf.display.notif_html5.seconds'); ?>
+				<input type="number" id="html5_notif_timeout" name="html5_notif_timeout" value="<?php echo FreshRSS_Context::$user_conf->html5_notif_timeout; ?>" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->html5_notif_timeout; ?>"/> <?php echo _t('conf.display.notif_html5.seconds'); ?>
 			</div>
 		</div>
 
diff --git a/app/views/configure/queries.phtml b/app/views/configure/queries.phtml
index 69efcf365..50df4cfea 100644
--- a/app/views/configure/queries.phtml
+++ b/app/views/configure/queries.phtml
@@ -25,6 +25,7 @@
 					       id="queries_<?php echo $key; ?>_name"
 					       name="queries[<?php echo $key; ?>][name]"
 					       value="<?php echo $query->getName(); ?>"
+					       data-leave-validation="<?php echo $query->getName(); ?>"
 					/>
 
 					<a class="btn" href="<?php echo $query->getUrl(); ?>">
diff --git a/app/views/configure/reading.phtml b/app/views/configure/reading.phtml
index 636671f14..8b123afa8 100644
--- a/app/views/configure/reading.phtml
+++ b/app/views/configure/reading.phtml
@@ -9,7 +9,7 @@
 		<div class="form-group">
 			<label class="group-name" for="posts_per_page"><?php echo _t('conf.reading.articles_per_page'); ?></label>
 			<div class="group-controls">
-				<input type="number" id="posts_per_page" name="posts_per_page" value="<?php echo FreshRSS_Context::$user_conf->posts_per_page; ?>" min="5" max="50" />
+				<input type="number" id="posts_per_page" name="posts_per_page" value="<?php echo FreshRSS_Context::$user_conf->posts_per_page; ?>" min="5" max="50" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->posts_per_page; ?>"/>
 				<?php echo _i('help'); ?> <?php echo _t('conf.reading.number_divided_when_reader'); ?>
 			</div>
 		</div>
@@ -17,7 +17,7 @@
 		<div class="form-group">
 			<label class="group-name" for="sort_order"><?php echo _t('conf.reading.sort'); ?></label>
 			<div class="group-controls">
-				<select name="sort_order" id="sort_order">
+				<select name="sort_order" id="sort_order" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->sort_order; ?>">
 					<option value="DESC"<?php echo FreshRSS_Context::$user_conf->sort_order === 'DESC' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.sort.newer_first'); ?></option>
 					<option value="ASC"<?php echo FreshRSS_Context::$user_conf->sort_order === 'ASC' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.sort.older_first'); ?></option>
 				</select>
@@ -27,7 +27,7 @@
 		<div class="form-group">
 			<label class="group-name" for="view_mode"><?php echo _t('conf.reading.view.default'); ?></label>
 			<div class="group-controls">
-				<select name="view_mode" id="view_mode">
+				<select name="view_mode" id="view_mode" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->view_mode; ?>">
 					<option value="normal"<?php echo FreshRSS_Context::$user_conf->view_mode === 'normal' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.view.normal'); ?></option>
 					<option value="reader"<?php echo FreshRSS_Context::$user_conf->view_mode === 'reader' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.view.reader'); ?></option>
 					<option value="global"<?php echo FreshRSS_Context::$user_conf->view_mode === 'global' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.view.global'); ?></option>
@@ -38,7 +38,7 @@
 		<div class="form-group">
 			<label class="group-name" for="view_mode"><?php echo _t('conf.reading.show'); ?></label>
 			<div class="group-controls">
-				<select name="default_view" id="default_view">
+				<select name="default_view" id="default_view" data-leave-validation="<?php echo FreshRSS_Context::$user_conf->default_view; ?>">
 					<option value="adaptive"<?php echo FreshRSS_Context::$user_conf->default_view === 'adaptive' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.show.adaptive'); ?></option>
 					<option value="all"<?php echo FreshRSS_Context::$user_conf->default_view === 'all' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.show.all_articles'); ?></option>
 					<option value="unread"<?php echo FreshRSS_Context::$user_conf->default_view === 'unread' ? ' selected="selected"' : ''; ?>><?php echo _t('conf.reading.show.unread'); ?></option>
@@ -49,7 +49,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="hide_read_feeds">
-					<input type="checkbox" name="hide_read_feeds" id="hide_read_feeds" value="1"<?php echo FreshRSS_Context::$user_conf->hide_read_feeds ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="hide_read_feeds" id="hide_read_feeds" value="1"<?php echo FreshRSS_Context::$user_conf->hide_read_feeds ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->hide_read_feeds; ?>"/>
 					<?php echo _t('conf.reading.hide_read_feeds'); ?>
 				</label>
 			</div>
@@ -58,7 +58,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="display_posts">
-					<input type="checkbox" name="display_posts" id="display_posts" value="1"<?php echo FreshRSS_Context::$user_conf->display_posts ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="display_posts" id="display_posts" value="1"<?php echo FreshRSS_Context::$user_conf->display_posts ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->display_posts; ?>"/>
 					<?php echo _t('conf.reading.display_articles_unfolded'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -68,7 +68,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="display_categories">
-					<input type="checkbox" name="display_categories" id="display_categories" value="1"<?php echo FreshRSS_Context::$user_conf->display_categories ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="display_categories" id="display_categories" value="1"<?php echo FreshRSS_Context::$user_conf->display_categories ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->display_categories; ?>"/>
 					<?php echo _t('conf.reading.display_categories_unfolded'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -78,7 +78,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="sticky_post">
-					<input type="checkbox" name="sticky_post" id="sticky_post" value="1"<?php echo FreshRSS_Context::$user_conf->sticky_post ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="sticky_post" id="sticky_post" value="1"<?php echo FreshRSS_Context::$user_conf->sticky_post ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->sticky_post; ?>"/>
 					<?php echo _t('conf.reading.sticky_post'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -88,7 +88,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="auto_load_more">
-					<input type="checkbox" name="auto_load_more" id="auto_load_more" value="1"<?php echo FreshRSS_Context::$user_conf->auto_load_more ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="auto_load_more" id="auto_load_more" value="1"<?php echo FreshRSS_Context::$user_conf->auto_load_more ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->auto_load_more; ?>"/>
 					<?php echo _t('conf.reading.auto_load_more'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -98,7 +98,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="lazyload">
-					<input type="checkbox" name="lazyload" id="lazyload" value="1"<?php echo FreshRSS_Context::$user_conf->lazyload ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="lazyload" id="lazyload" value="1"<?php echo FreshRSS_Context::$user_conf->lazyload ? ' checked="checked"' : ''; ?>  data-leave-validation="<?php echo FreshRSS_Context::$user_conf->lazyload; ?>"/>
 					<?php echo _t('conf.reading.img_with_lazyload'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -108,7 +108,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="reading_confirm">
-					<input type="checkbox" name="reading_confirm" id="reading_confirm" value="1"<?php echo FreshRSS_Context::$user_conf->reading_confirm ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="reading_confirm" id="reading_confirm" value="1"<?php echo FreshRSS_Context::$user_conf->reading_confirm ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->reading_confirm; ?>"/>
 					<?php echo _t('conf.reading.confirm_enabled'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -118,7 +118,7 @@
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="auto_remove_article">
-					<input type="checkbox" name="auto_remove_article" id="auto_remove_article" value="1"<?php echo FreshRSS_Context::$user_conf->auto_remove_article ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="auto_remove_article" id="auto_remove_article" value="1"<?php echo FreshRSS_Context::$user_conf->auto_remove_article ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->auto_remove_article; ?>"/>
 					<?php echo _t('conf.reading.auto_remove_article'); ?>
 					<noscript> — <strong><?php echo _t('gen.js.should_be_activated'); ?></strong></noscript>
 				</label>
@@ -129,19 +129,19 @@
 			<label class="group-name"><?php echo _t('conf.reading.read.when'); ?></label>
 			<div class="group-controls">
 				<label class="checkbox" for="check_open_article">
-					<input type="checkbox" name="mark_open_article" id="check_open_article" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['article'] ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="mark_open_article" id="check_open_article" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['article'] ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->mark_when['article']; ?>"/>
 					<?php echo _t('conf.reading.read.article_viewed'); ?>
 				</label>
 				<label class="checkbox" for="check_open_site">
-					<input type="checkbox" name="mark_open_site" id="check_open_site" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['site'] ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="mark_open_site" id="check_open_site" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['site'] ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->mark_when['site']; ?>"/>
 					<?php echo _t('conf.reading.read.article_open_on_website'); ?>
 				</label>
 				<label class="checkbox" for="check_scroll">
-					<input type="checkbox" name="mark_scroll" id="check_scroll" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['scroll'] ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="mark_scroll" id="check_scroll" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['scroll'] ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->mark_when['scroll']; ?>"/>
 					<?php echo _t('conf.reading.read.scroll'); ?>
 				</label>
 				<label class="checkbox" for="check_reception">
-					<input type="checkbox" name="mark_upon_reception" id="check_reception" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['reception'] ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="mark_upon_reception" id="check_reception" value="1"<?php echo FreshRSS_Context::$user_conf->mark_when['reception'] ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->mark_when['reception']; ?>"/>
 					<?php echo _t('conf.reading.read.upon_reception'); ?>
 				</label>
 			</div>
@@ -151,7 +151,7 @@
 			<label class="group-name"><?php echo _t('conf.reading.after_onread'); ?></label>
 			<div class="group-controls">
 				<label class="checkbox" for="onread_jump_next">
-					<input type="checkbox" name="onread_jump_next" id="onread_jump_next" value="1"<?php echo FreshRSS_Context::$user_conf->onread_jump_next ? ' checked="checked"' : ''; ?> />
+					<input type="checkbox" name="onread_jump_next" id="onread_jump_next" value="1"<?php echo FreshRSS_Context::$user_conf->onread_jump_next ? ' checked="checked"' : ''; ?> data-leave-validation="<?php echo FreshRSS_Context::$user_conf->onread_jump_next; ?>"/>
 					<?php echo _t('conf.reading.jump_next'); ?>
 				</label>
 			</div>
diff --git a/app/views/configure/sharing.phtml b/app/views/configure/sharing.phtml
index deb1ed6b7..7bf435777 100644
--- a/app/views/configure/sharing.phtml
+++ b/app/views/configure/sharing.phtml
@@ -28,9 +28,9 @@
 				<div class="group-controls">
 					<input type='hidden' id='share_<?php echo $key; ?>_type' name="share[<?php echo $key; ?>][type]" value='<?php echo $share->type(); ?>' />
 					<div class="stick">
-						<input type="text" id="share_<?php echo $key; ?>_name" name="share[<?php echo $key; ?>][name]" class="extend" value="<?php echo $share->name(); ?>" placeholder="<?php echo _t('conf.sharing.share_name'); ?>" size="64" />
+						<input type="text" id="share_<?php echo $key; ?>_name" name="share[<?php echo $key; ?>][name]" class="extend" value="<?php echo $share->name(); ?>" placeholder="<?php echo _t('conf.sharing.share_name'); ?>" size="64" data-leave-validation="<?php echo $share->name(); ?>"/>
 					<?php if ($share->formType() === 'advanced') { ?>
-						<input type="url" id="share_<?php echo $key; ?>_url" name="share[<?php echo $key; ?>][url]" class="extend" value="<?php echo $share->baseUrl(); ?>" placeholder="<?php echo _t('conf.sharing.share_url'); ?>" size="64" />
+						<input type="url" id="share_<?php echo $key; ?>_url" name="share[<?php echo $key; ?>][url]" class="extend" value="<?php echo $share->baseUrl(); ?>" placeholder="<?php echo _t('conf.sharing.share_url'); ?>" size="64" data-leave-validation="<?php echo $share->baseUrl(); ?>"/>
 					<?php } else { ?>
 						<input type="url" id="share_<?php echo $key; ?>_url" name="share[<?php echo $key; ?>][url]" class="extend" value="<?php echo $share->baseUrl(); ?>" placeholder="<?php echo _t('gen.short.not_applicable'); ?>" size="64" disabled/>
 					<?php } ?>
diff --git a/app/views/configure/shortcut.phtml b/app/views/configure/shortcut.phtml
index f68091af9..264a5f805 100644
--- a/app/views/configure/shortcut.phtml
+++ b/app/views/configure/shortcut.phtml
@@ -23,28 +23,28 @@
 		<div class="form-group">
 			<label class="group-name" for="next_entry"><?php echo _t('conf.shortcut.next_article'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="next_entry" name="shortcuts[next_entry]" list="keys" value="<?php echo $s['next_entry']; ?>" />
+				<input type="text" id="next_entry" name="shortcuts[next_entry]" list="keys" value="<?php echo $s['next_entry']; ?>" data-leave-validation="<?php echo $s['next_entry']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="prev_entry"><?php echo _t('conf.shortcut.previous_article'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="prev_entry" name="shortcuts[prev_entry]" list="keys" value="<?php echo $s['prev_entry']; ?>" />
+				<input type="text" id="prev_entry" name="shortcuts[prev_entry]" list="keys" value="<?php echo $s['prev_entry']; ?>" data-leave-validation="<?php echo $s['prev_entry']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="first_entry"><?php echo _t('conf.shortcut.first_article'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="first_entry" name="shortcuts[first_entry]" list="keys" value="<?php echo $s['first_entry']; ?>" />
+				<input type="text" id="first_entry" name="shortcuts[first_entry]" list="keys" value="<?php echo $s['first_entry']; ?>" data-leave-validation="<?php echo $s['first_entry']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="last_entry"><?php echo _t('conf.shortcut.last_article'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="last_entry" name="shortcuts[last_entry]" list="keys" value="<?php echo $s['last_entry']; ?>" />
+				<input type="text" id="last_entry" name="shortcuts[last_entry]" list="keys" value="<?php echo $s['last_entry']; ?>" data-leave-validation="<?php echo $s['last_entry']; ?>"/>
 			</div>
 		</div>
 
@@ -53,7 +53,7 @@
 		<div class="form-group">
 			<label class="group-name" for="mark_read"><?php echo _t('conf.shortcut.mark_read'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="mark_read" name="shortcuts[mark_read]" list="keys" value="<?php echo $s['mark_read']; ?>" />
+				<input type="text" id="mark_read" name="shortcuts[mark_read]" list="keys" value="<?php echo $s['mark_read']; ?>" data-leave-validation="<?php echo $s['mark_read']; ?>"/>
 				<?php echo _t('conf.shortcut.shift_for_all_read'); ?>
 			</div>
 		</div>
@@ -61,21 +61,21 @@
 		<div class="form-group">
 			<label class="group-name" for="mark_favorite"><?php echo _t('conf.shortcut.mark_favorite'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="mark_favorite" name="shortcuts[mark_favorite]" list="keys" value="<?php echo $s['mark_favorite']; ?>" />
+				<input type="text" id="mark_favorite" name="shortcuts[mark_favorite]" list="keys" value="<?php echo $s['mark_favorite']; ?>" data-leave-validation="<?php echo $s['mark_favorite']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="go_website"><?php echo _t('conf.shortcut.see_on_website'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="go_website" name="shortcuts[go_website]" list="keys" value="<?php echo $s['go_website']; ?>" />
+				<input type="text" id="go_website" name="shortcuts[go_website]" list="keys" value="<?php echo $s['go_website']; ?>" data-leave-validation="<?php echo $s['go_website']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="auto_share_shortcut"><?php echo _t('conf.shortcut.auto_share'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="auto_share_shortcut" name="shortcuts[auto_share]" list="keys" value="<?php echo $s['auto_share']; ?>" />
+				<input type="text" id="auto_share_shortcut" name="shortcuts[auto_share]" list="keys" value="<?php echo $s['auto_share']; ?>" data-leave-validation="<?php echo $s['auto_share']; ?>"/>
 				<?php echo _t('conf.shortcut.auto_share_help'); ?>
 			</div>
 		</div>
@@ -83,7 +83,7 @@
 		<div class="form-group">
 			<label class="group-name" for="collapse_entry"><?php echo _t('conf.shortcut.collapse_article'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="collapse_entry" name="shortcuts[collapse_entry]" list="keys" value="<?php echo $s['collapse_entry']; ?>" />
+				<input type="text" id="collapse_entry" name="shortcuts[collapse_entry]" list="keys" value="<?php echo $s['collapse_entry']; ?>" data-leave-validation="<?php echo $s['collapse_entry']; ?>"/>
 			</div>
 		</div>
 
@@ -92,21 +92,21 @@
 		<div class="form-group">
 			<label class="group-name" for="load_more_shortcut"><?php echo _t('conf.shortcut.load_more'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="load_more_shortcut" name="shortcuts[load_more]" list="keys" value="<?php echo $s['load_more']; ?>" />
+				<input type="text" id="load_more_shortcut" name="shortcuts[load_more]" list="keys" value="<?php echo $s['load_more']; ?>" data-leave-validation="<?php echo $s['load_more']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="focus_search_shortcut"><?php echo _t('conf.shortcut.focus_search'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="focus_search_shortcut" name="shortcuts[focus_search]" list="keys" value="<?php echo $s['focus_search']; ?>" />
+				<input type="text" id="focus_search_shortcut" name="shortcuts[focus_search]" list="keys" value="<?php echo $s['focus_search']; ?>" data-leave-validation="<?php echo $s['focus_search']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="user_filter_shortcut"><?php echo _t('conf.shortcut.user_filter'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="user_filter_shortcut" name="shortcuts[user_filter]" list="keys" value="<?php echo $s['user_filter']; ?>" />
+				<input type="text" id="user_filter_shortcut" name="shortcuts[user_filter]" list="keys" value="<?php echo $s['user_filter']; ?>" data-leave-validation="<?php echo $s['user_filter']; ?>"/>
 				<?php echo _t('conf.shortcut.user_filter_help'); ?>
 			</div>
 		</div>
@@ -114,14 +114,14 @@
 		<div class="form-group">
 			<label class="group-name" for="close_dropdown_shortcut"><?php echo _t('conf.shortcut.close_dropdown'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="close_dropdown" name="shortcuts[close_dropdown]" list="keys" value="<?php echo $s['close_dropdown']; ?>" />
+				<input type="text" id="close_dropdown" name="shortcuts[close_dropdown]" list="keys" value="<?php echo $s['close_dropdown']; ?>" data-leave-validation="<?php echo $s['close_dropdown']; ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="help_shortcut"><?php echo _t('conf.shortcut.help'); ?></label>
 			<div class="group-controls">
-				<input type="text" id="help_shortcut" name="shortcuts[help]" list="keys" value="<?php echo $s['help']; ?>" />
+				<input type="text" id="help_shortcut" name="shortcuts[help]" list="keys" value="<?php echo $s['help']; ?>" data-leave-validation="<?php echo $s['help']; ?>"/>
 			</div>
 		</div>
 
diff --git a/p/scripts/main.js b/p/scripts/main.js
index b7c143cc1..eaf6067f7 100644
--- a/p/scripts/main.js
+++ b/p/scripts/main.js
@@ -1229,6 +1229,33 @@ function init_slider_observers() {
 	});
 }
 
+function init_configuration_alert() {
+	$(window).on('beforeunload', function(e){
+		if (e.originalEvent.explicitOriginalTarget.type === 'submit') {
+			// we don't want an alert when submitting the form with the submit button
+			return;
+		}
+		if ($(e.originalEvent.explicitOriginalTarget).attr('data-leave-validation') !== undefined) {
+			// we don't want an alert when submitting the form by pressing the enter key
+			return;
+		}
+		var fields = $("[data-leave-validation]");
+		for (var i = 0; i < fields.length; i++) {
+			if ($(fields[i]).attr('type') === 'checkbox' || $(fields[i]).attr('type') === 'radio') {
+				// The use of != is done on purpose to check boolean against integer
+				if ($(fields[i]).is(':checked') != $(fields[i]).attr('data-leave-validation')) {
+					return false;
+				}
+			} else {
+				if ($(fields[i]).attr('data-leave-validation') !== $(fields[i]).val()) {
+					return false;
+				}
+			}
+		}
+		return;
+	});
+}
+
 function init_all() {
 	if (!(window.$ && window.context)) {
 		if (window.console) {
@@ -1260,6 +1287,7 @@ function init_all() {
 		init_password_observers();
 		init_stats_observers();
 		init_slider_observers();
+		init_configuration_alert();
 	}
 
 	if (window.console) {