diff --git a/web/src/components/office/index.vue b/web/src/components/office/index.vue
index fa503be85..d22d6da4d 100644
--- a/web/src/components/office/index.vue
+++ b/web/src/components/office/index.vue
@@ -39,7 +39,7 @@
       fileUrl.value = val
       const fileExt = val.split('.')[1] || ''
       const image = ['png', 'jpg', 'jpeg', 'gif']
-      ext.value = image.includes(fileExt) ? 'image' : fileExt
+      ext.value = image.includes(fileExt?.toLowerCase()) ? 'image' : fileExt
     },
     { immediate: true }
   )
diff --git a/web/src/components/selectImage/selectImage.vue b/web/src/components/selectImage/selectImage.vue
index 3be279db0..2c08d88e5 100644
--- a/web/src/components/selectImage/selectImage.vue
+++ b/web/src/components/selectImage/selectImage.vue
@@ -218,7 +218,7 @@
   const chooseImg = (url) => {
     if (props.fileType) {
       const typeSuccess = listObj[props.fileType].some((item) => {
-        if (url.includes(item)) {
+        if (url?.toLowerCase().includes(item)) {
           return true
         }
       })
diff --git a/web/src/components/upload/image.vue b/web/src/components/upload/image.vue
index d7f021ca9..7423cc7de 100644
--- a/web/src/components/upload/image.vue
+++ b/web/src/components/upload/image.vue
@@ -38,8 +38,8 @@
   })
 
   const beforeImageUpload = (file) => {
-    const isJPG = file.type === 'image/jpeg'
-    const isPng = file.type === 'image/png'
+    const isJPG = file.type?.toLowerCase() === 'image/jpeg'
+    const isPng = file.type?.toLowerCase() === 'image/png'
     if (!isJPG && !isPng) {
       ElMessage.error('上传头像图片只能是 jpg或png 格式!')
       return false
diff --git a/web/src/utils/image.js b/web/src/utils/image.js
index a2d3241e8..8b6523295 100644
--- a/web/src/utils/image.js
+++ b/web/src/utils/image.js
@@ -106,17 +106,21 @@ export const getUrl = (url) => {
   }
 }
 
-export const isVideoExt = (url) =>
-  url.endsWith('.mp4') ||
-  url.endsWith('.mov') ||
-  url.endsWith('.webm') ||
-  url.endsWith('.ogg')
+const VIDEO_EXTENSIONS = ['.mp4', '.mov', '.webm', '.ogg']
+const VIDEO_MIME_TYPES = ['video/mp4', 'video/webm', 'video/ogg']
+const IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/webp', 'image/svg+xml']
 
-export const isVideoMime = (type) =>
-  type == 'video/mp4' || type == 'video/webm' || type == 'video/ogg'
+export const isVideoExt = (url) => {
+  const urlLower = url?.toLowerCase() || ''
+  return urlLower !== '' && VIDEO_EXTENSIONS.some(ext => urlLower.endsWith(ext))
+}
 
-export const isImageMime = (type) =>
-  type == 'image/jpeg' ||
-  type == 'image/png' ||
-  type == 'image/webp' ||
-  type == 'image/svg+xml'
+export const isVideoMime = (type) => {
+  const typeLower = type?.toLowerCase() || ''
+  return typeLower !== '' && VIDEO_MIME_TYPES.includes(typeLower)
+}
+
+export const isImageMime = (type) => {
+  const typeLower = type?.toLowerCase() || ''
+  return typeLower !== '' && IMAGE_MIME_TYPES.includes(typeLower)
+}
diff --git a/web/src/view/example/upload/upload.vue b/web/src/view/example/upload/upload.vue
index 8e85613f8..42a4c9161 100644
--- a/web/src/view/example/upload/upload.vue
+++ b/web/src/view/example/upload/upload.vue
@@ -50,7 +50,7 @@
         <el-table-column align="left" label="标签" prop="tag" width="100">
           <template #default="scope">
             <el-tag
-              :type="scope.row.tag === 'jpg' ? 'info' : 'success'"
+              :type="scope.row.tag?.toLowerCase() === 'jpg' ? 'info' : 'success'"
               disable-transitions
               >{{ scope.row.tag }}
             </el-tag>