diff --git a/htdocs/langs/en_US/website.lang b/htdocs/langs/en_US/website.lang
index c23f4425dca..bb656d85a7b 100644
--- a/htdocs/langs/en_US/website.lang
+++ b/htdocs/langs/en_US/website.lang
@@ -141,3 +141,7 @@ GenerateSitemaps=Generate website sitemap file
 ConfirmGenerateSitemaps=If you confirm, you will erase the existing sitemap file...
 ConfirmSitemapsCreation=Confirm sitemap generation
 SitemapGenerated=Sitemap Generated
+GenerateImgWebp=Convert all images into webp
+ConfirmGenerateImgWebp=If you confirm, you will generate all website's images in webp format...
+ConfirmImgWebpCreation=Confirm all images convertion
+SucessConvertImgWebp=Images successfully converted
\ No newline at end of file
diff --git a/htdocs/website/index.php b/htdocs/website/index.php
index 26ca6df9bf8..a6b31e0bb39 100644
--- a/htdocs/website/index.php
+++ b/htdocs/website/index.php
@@ -2230,7 +2230,31 @@ if ($action == 'generatesitemaps' && $usercanedit) {
 	}
 	$action = 'preview';
 }
-
+$imagefolder = $conf->website->dir_output.'/'.$websitekey.'/medias/image/'.$websitekey.'/';
+if ($action == 'convertimgwebp' && $usercanedit) {
+	include_once DOL_DOCUMENT_ROOT.'/core/lib/images.lib.php';
+	$filelist = dol_dir_list($imagefolder, "all", 1);
+	foreach ($filelist as $filename) {
+		$filepath = $filename['fullname'];
+		if (!(substr_compare($filepath, 'webp', -strlen('webp')) === 0)) {
+			if (image_format_supported($filepath) == 1) {
+				$filepathnoext = preg_replace("/\..*/", "", $filepath);
+				$result = dol_imageResizeOrCrop($filepath, 0, 0, 0, 0, 0, $filepathnoext.'.webp');
+				if (!dol_is_file($result)) {
+					$error++;
+					setEventMessages($result, null, 'errors');
+				}
+			}
+		}
+		if ($error) {
+			break;
+		}
+	}
+	if (!$error) {
+		setEventMessages($langs->trans('SucessConvertImgWebp'), null);
+	}
+	$action = 'preview';
+}
 
 /*
  * View
@@ -2246,7 +2270,10 @@ if ($action == 'confirmgeneratesitemaps') {
 	$formconfirm = $form->formconfirm($_SERVER["PHP_SELF"].'?website='.$website->ref, $langs->trans('ConfirmSitemapsCreation'), $langs->trans('ConfirmGenerateSitemaps', $object->ref), 'generatesitemaps', '', "yes", 1);
 	$action = 'preview';
 }
-
+if ($action == 'confirmconvertimgwebp') {
+	$formconfirm = $form->formconfirm($_SERVER["PHP_SELF"].'?website='.$website->ref, $langs->trans('ConfirmImgWebpCreation'), $langs->trans('ConfirmGenerateImgWebp', $object->ref), 'convertimgwebp', '', "yes", 1);
+	$action = 'preview';
+}
 $helpurl = 'EN:Module_Website|FR:Module_Website_FR|ES:Módulo_Website';
 
 $arrayofjs = array(
@@ -2465,6 +2492,7 @@ if (!GETPOST('hide_websitemenu')) {
 			// Generate site map
 			print '<a href="'.$_SERVER["PHP_SEFL"].'?action=confirmgeneratesitemaps&website='.$website->ref.'" class="button bordertransp"'.$disabled.' title="'.dol_escape_htmltag($langs->trans("GenerateSitemaps")).'"><span class="fa fa-sitemap"><span></a>';
 
+			print '<a href="'.$_SERVER["PHP_SEFL"].'?action=confirmconvertimgwebp&website='.$website->ref.'" class="button bordertransp"'.$disabled.' title="'.dol_escape_htmltag($langs->trans("GenerateImgWebp")).'"><span class="fa fa-cogs"><span></a>';
 			print ' &nbsp; ';
 
 			print '<a href="'.$_SERVER["PHP_SEFL"].'?action=replacesite&website='.$website->ref.'" class="button bordertransp"'.$disabled.' title="'.dol_escape_htmltag($langs->trans("ReplaceWebsiteContent")).'"><span class="fa fa-search"><span></a>';