diff --git a/web/app/components/workflow/skill/utils/file-utils.ts b/web/app/components/workflow/skill/utils/file-utils.ts
index fec1ca025c..12c2f8dad2 100644
--- a/web/app/components/workflow/skill/utils/file-utils.ts
+++ b/web/app/components/workflow/skill/utils/file-utils.ts
@@ -123,7 +123,7 @@ export function isBinaryFile(extension: string): boolean {
 }
 
 export function isTextLikeFile(extension: string): boolean {
-  return !isBinaryFile(extension) && !isImageFile(extension) && !isVideoFile(extension)
+  return !isBinaryFile(extension) && !isImageFile(extension) && !isVideoFile(extension) && !isPdfFile(extension)
 }
 
 export function isImageFile(extension: string): boolean {