diff --git a/httpd/httpd_test.go b/httpd/httpd_test.go
index b714ed45..a9f3596e 100644
--- a/httpd/httpd_test.go
+++ b/httpd/httpd_test.go
@@ -6189,26 +6189,32 @@ func TestAddWebFoldersMock(t *testing.T) {
 	form.Set("mapped_path", mappedPath)
 	form.Set("name", folderName)
 	form.Set("description", folderDesc)
-	req, err := http.NewRequest(http.MethodPost, webFolderPath, strings.NewReader(form.Encode()))
+	b, contentType, err := getMultipartFormData(form, "", "")
 	assert.NoError(t, err)
+	req, err := http.NewRequest(http.MethodPost, webFolderPath, &b)
+	assert.NoError(t, err)
+	req.Header.Set("Content-Type", contentType)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rr := executeRequest(req)
 	checkResponseCode(t, http.StatusForbidden, rr)
 	assert.Contains(t, rr.Body.String(), "unable to verify form token")
 
 	form.Set(csrfFormToken, csrfToken)
-	req, err = http.NewRequest(http.MethodPost, webFolderPath, strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
 	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, webFolderPath, &b)
+	assert.NoError(t, err)
+	req.Header.Set("Content-Type", contentType)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusSeeOther, rr)
 	// adding the same folder will fail since the name must be unique
-	req, err = http.NewRequest(http.MethodPost, webFolderPath, strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, webFolderPath, &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 	// invalid form
@@ -6277,18 +6283,22 @@ func TestS3WebFolderMock(t *testing.T) {
 	form.Set("s3_upload_part_size", strconv.Itoa(S3UploadPartSize))
 	form.Set("s3_upload_concurrency", "a")
 	form.Set(csrfFormToken, csrfToken)
-	req, err := http.NewRequest(http.MethodPost, webFolderPath, strings.NewReader(form.Encode()))
+	b, contentType, err := getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err := http.NewRequest(http.MethodPost, webFolderPath, &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr := executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 
 	form.Set("s3_upload_concurrency", strconv.Itoa(S3UploadConcurrency))
-	req, err = http.NewRequest(http.MethodPost, webFolderPath, strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, webFolderPath, &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusSeeOther, rr)
 
@@ -6315,18 +6325,22 @@ func TestS3WebFolderMock(t *testing.T) {
 	// update
 	S3UploadConcurrency = 10
 	form.Set("s3_upload_concurrency", "b")
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 
 	form.Set("s3_upload_concurrency", strconv.Itoa(S3UploadConcurrency))
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusSeeOther, rr)
 
@@ -6380,19 +6394,23 @@ func TestUpdateWebFolderMock(t *testing.T) {
 	form.Set("name", folderName)
 	form.Set("description", folderDesc)
 	form.Set(csrfFormToken, "")
-	req, err := http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), strings.NewReader(form.Encode()))
+	b, contentType, err := getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err := http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr := executeRequest(req)
 	checkResponseCode(t, http.StatusForbidden, rr)
 	assert.Contains(t, rr.Body.String(), "unable to verify form token")
 
 	form.Set(csrfFormToken, csrfToken)
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusSeeOther, rr)
 
@@ -6407,26 +6425,32 @@ func TestUpdateWebFolderMock(t *testing.T) {
 	assert.Equal(t, folderDesc, folder.Description)
 
 	// parse form error
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName)+"??a=a%B3%A2%G3", strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName)+"??a=a%B3%A2%G3", &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 	assert.Contains(t, rr.Body.String(), "invalid URL escape")
 
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName+"1"), strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName+"1"), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusNotFound, rr)
 
 	form.Set("mapped_path", "arelative/path")
-	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), strings.NewReader(form.Encode()))
+	b, contentType, err = getMultipartFormData(form, "", "")
+	assert.NoError(t, err)
+	req, err = http.NewRequest(http.MethodPost, path.Join(webFolderPath, folderName), &b)
 	assert.NoError(t, err)
 	setJWTCookieForReq(req, webToken)
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Content-Type", contentType)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 
diff --git a/httpd/web.go b/httpd/web.go
index c28b502b..9fe1b9d8 100644
--- a/httpd/web.go
+++ b/httpd/web.go
@@ -1478,7 +1478,7 @@ func handleWebAddFolderGet(w http.ResponseWriter, r *http.Request) {
 func handleWebAddFolderPost(w http.ResponseWriter, r *http.Request) {
 	r.Body = http.MaxBytesReader(w, r.Body, maxRequestSize)
 	folder := vfs.BaseVirtualFolder{}
-	err := r.ParseForm()
+	err := r.ParseMultipartForm(maxRequestSize)
 	if err != nil {
 		renderFolderPage(w, r, folder, folderPageModeAdd, err.Error())
 		return
@@ -1529,7 +1529,7 @@ func handleWebUpdateFolderPost(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err = r.ParseForm()
+	err = r.ParseMultipartForm(maxRequestSize)
 	if err != nil {
 		renderFolderPage(w, r, folder, folderPageModeUpdate, err.Error())
 		return
diff --git a/templates/folder.html b/templates/folder.html
index 3892ee01..4dc6122b 100644
--- a/templates/folder.html
+++ b/templates/folder.html
@@ -27,7 +27,7 @@
             </div>
         </div>
         {{end}}
-        <form id="folder_form" action="{{.CurrentURL}}" method="POST" autocomplete="off" {{if eq .Mode 3}}target="_blank"{{end}}>
+        <form id="folder_form" enctype="multipart/form-data" action="{{.CurrentURL}}" method="POST" autocomplete="off" {{if eq .Mode 3}}target="_blank"{{end}}>
             {{if eq .Mode 3}}
             <div class="form-group row">
                 <label for="idFolders" class="col-sm-2 col-form-label">Folders</label>