diff --git a/plugin/editor/cheditor5/imageUpload/upload.php b/plugin/editor/cheditor5/imageUpload/upload.php
index 0d675e91b..9594f8c7a 100644
--- a/plugin/editor/cheditor5/imageUpload/upload.php
+++ b/plugin/editor/cheditor5/imageUpload/upload.php
@@ -9,10 +9,11 @@ if( !function_exists('che_reprocessImage') ){
     function che_reprocessImage($file_path, $callback){
 
         $MIME_TYPES_PROCESSORS = array(
-            "image/gif"       => array("imagecreatefromgif", "imagegif"),
+            "image/gif"       => array("imagecreatefromgif",  "imagegif"),
             "image/jpg"       => array("imagecreatefromjpeg", "imagejpeg"),
             "image/jpeg"      => array("imagecreatefromjpeg", "imagejpeg"),
-            "image/png"       => array("imagecreatefrompng", "imagepng"),
+            "image/png"       => array("imagecreatefrompng",  "imagepng"),
+            "image/webp"      => array("imagecreatefromwebp", "imagewebp"),
             "image/bmp"       => array("imagecreatefromwbmp", "imagewbmp")
         );
 
@@ -84,6 +85,7 @@ switch ($type) {
 	case "jpeg":
 	case "gif":
 	case "png":
+    case "webp":
 		$found = true;
 }
 
diff --git a/plugin/editor/cheditor5/popup/image.html5.html b/plugin/editor/cheditor5/popup/image.html5.html
index ed91fd34e..aceda6140 100644
--- a/plugin/editor/cheditor5/popup/image.html5.html
+++ b/plugin/editor/cheditor5/popup/image.html5.html
@@ -14,7 +14,7 @@
                 <div style="margin: 0px 0px 10px 0px;">
                     <img src="../icons/imageUpload/remove_all.gif" class="remove-button" onclick="removeImages();"
                          alt="" style="vertical-align: middle" />
-                    <input type="file" name="imageUpload[]" accept="image/jpeg,image/png,image/gif" id="inputImageUpload" multiple="multiple"
+                    <input type="file" name="imageUpload[]" accept="image/jpeg,image/png,image/gif,image/webp" id="inputImageUpload" multiple="multiple"
                          onchange="selectedFiles(event)" style="vertical-align: middle; visibility: hidden; width: 0px"/>
                     <img id="fileSelectButton" src="../icons/imageUpload/add.gif" alt="image button" onclick="inputImageUpload.click()"
                          style="vertical-align: middle; margin-left: -5px; cursor: pointer"/>
diff --git a/plugin/editor/cheditor5/popup/image.html5.m.html b/plugin/editor/cheditor5/popup/image.html5.m.html
index 0e88dd423..0f9debb67 100644
--- a/plugin/editor/cheditor5/popup/image.html5.m.html
+++ b/plugin/editor/cheditor5/popup/image.html5.m.html
@@ -14,7 +14,7 @@
                 <div style="margin: 0px 0px 10px 0px;">
                     <img src="../icons/imageUpload/remove_all.gif" class="remove-button" onclick="removeImages();"
                          alt="" style="vertical-align: middle" />
-                    <input type="file" name="imageUpload[]" accept="image/jpeg,image/png,image/gif" id="inputImageUpload" multiple="multiple"
+                    <input type="file" name="imageUpload[]" accept="image/jpeg,image/png,image/gif,image/webp" id="inputImageUpload" multiple="multiple"
                          onchange="selectedFiles(event)" style="vertical-align: middle; visibility: hidden; width: 0px"/>
                     <img id="fileSelectButton" src="../icons/imageUpload/add.gif" alt="image button" onclick="inputImageUpload.click()"
                          style="vertical-align: middle; margin-left: -5px; cursor: pointer"/>
diff --git a/plugin/editor/cheditor5/popup/js/image.html5.js b/plugin/editor/cheditor5/popup/js/image.html5.js
index 37b9a4559..40540d923 100644
--- a/plugin/editor/cheditor5/popup/js/image.html5.js
+++ b/plugin/editor/cheditor5/popup/js/image.html5.js
@@ -14,7 +14,7 @@ var activeImage = null,
     dragDropDiv,
     eventDiff_x = 0,
     eventDiff_y = 0,
-    fileTypeRe = /^image\/(png|jpeg|gif)$/i,
+    fileTypeRe = /^image\/(png|jpeg|gif|webp)$/i,
     geckoOffsetX_marker = -3,
     geckoOffsetY_marker = -1,
     imageCompleted = 0,
@@ -434,7 +434,7 @@ function startUpload(list) {
 
 function fileFilterError(file) {
     alert("선택하신 '" + file + "' 파일은 전송할 수 없습니다.\n" +
-       "gif, png, jpg 사진 파일만 전송할 수 있습니다.");
+       "gif, png, jpg, webp 사진 파일만 전송할 수 있습니다.");
 }
 
 function imgComplete(img, imgSize, boxId) {
diff --git a/plugin/editor/cheditor5/popup/js/image.html5.m.js b/plugin/editor/cheditor5/popup/js/image.html5.m.js
index 67cedbf5d..c70470178 100644
--- a/plugin/editor/cheditor5/popup/js/image.html5.m.js
+++ b/plugin/editor/cheditor5/popup/js/image.html5.m.js
@@ -14,7 +14,7 @@ var activeImage = null,
     dragDropDiv,
     eventDiff_x = 0,
     eventDiff_y = 0,
-    fileTypeRe = /^image\/(png|jpeg|gif)$/i,
+    fileTypeRe = /^image\/(png|jpeg|gif|webp)$/i,
     geckoOffsetX_marker = -3,
     geckoOffsetY_marker = -1,
     imageCompleted = 0,
@@ -434,7 +434,7 @@ function startUpload(list) {
 
 function fileFilterError(file) {
     alert("선택하신 '" + file + "' 파일은 전송할 수 없습니다.\n" +
-       "gif, png, jpg 사진 파일만 전송할 수 있습니다.");
+       "gif, png, jpg, webp 사진 파일만 전송할 수 있습니다.");
 }
 
 function imgComplete(img, imgSize, boxId) {
diff --git a/plugin/editor/cheditor5/popup/js/image.js b/plugin/editor/cheditor5/popup/js/image.js
index 7fc7c642f..706bfb413 100644
--- a/plugin/editor/cheditor5/popup/js/image.js
+++ b/plugin/editor/cheditor5/popup/js/image.js
@@ -335,7 +335,7 @@ function startUpload(count) {
 
 function fileFilterError(file) {
     alert("선택하신 '" + file + "' 파일은 전송할 수 없습니다.\n" +
-       "gif, png, jpg, 그림 파일만 전송할 수 있습니다.");
+       "gif, png, jpg, webp 그림 파일만 전송할 수 있습니다.");
 }
 
 function imgComplete(img, imgSize, boxId) {
diff --git a/plugin/editor/cheditor5/popup/js/image_url.js b/plugin/editor/cheditor5/popup/js/image_url.js
index fa5b85d7d..fd53e1582 100644
--- a/plugin/editor/cheditor5/popup/js/image_url.js
+++ b/plugin/editor/cheditor5/popup/js/image_url.js
@@ -54,7 +54,7 @@ function chkImgFormat (url)
 {
     var imageName = getFilename(url);
     var allowSubmit = false;
-    var extArray = [".gif", ".jpg", ".jpeg", ".png"];
+    var extArray = [".gif", ".jpg", ".jpeg", ".png", ".webp"];
 
     extArray.join(" ");
     if (imageName === "") {
@@ -72,7 +72,7 @@ function chkImgFormat (url)
     }
 
     if (!allowSubmit) {
-        alert("사진은 GIF, JPG, PNG 형식만 넣을 수 있습니다.");
+        alert("사진은 GIF, JPG, PNG, WEBP 형식만 넣을 수 있습니다.");
         return false;
     }