diff --git a/frontend/src/components/SourceCodeEditor/SourceCodeEditor.tsx b/frontend/src/components/SourceCodeEditor/SourceCodeEditor.tsx
index 51a131b74..0f0e61348 100644
--- a/frontend/src/components/SourceCodeEditor/SourceCodeEditor.tsx
+++ b/frontend/src/components/SourceCodeEditor/SourceCodeEditor.tsx
@@ -14,6 +14,7 @@ interface Props {
   content: string;
   onChangeFilename: (newFileName: string) => void;
   onChangeContent: (newContent: string) => void;
+  onBlurFilename: (newFileName: string) => void;
   isValidContentChange?: (newContent: string) => boolean;
   handleDeleteSourceCode: () => void;
   sourceCodeRef?: React.Ref<HTMLInputElement> | null;
@@ -24,6 +25,7 @@ const SourceCodeEditor = ({
   filenameAutoFocus = false,
   content,
   onChangeFilename,
+  onBlurFilename,
   onChangeContent,
   isValidContentChange = () => true,
   handleDeleteSourceCode,
@@ -53,11 +55,16 @@ const SourceCodeEditor = ({
     previousContentRef.current = value;
   };
 
+  const handleFilenameBlur = (e: React.FocusEvent<HTMLInputElement>) => {
+    onBlurFilename(e.target.value);
+  };
+
   return (
     <S.SourceCodeEditorContainer ref={sourceCodeRef}>
       <S.FilenameInput
         value={filename}
         onChange={handleFilenameChange}
+        onBlur={handleFilenameBlur}
         placeholder={'파일명.[확장자]'}
         autoFocus={filenameAutoFocus}
       />
diff --git a/frontend/src/components/TagInput/TagInput.tsx b/frontend/src/components/TagInput/TagInput.tsx
index ce131eaa5..b31e59ead 100644
--- a/frontend/src/components/TagInput/TagInput.tsx
+++ b/frontend/src/components/TagInput/TagInput.tsx
@@ -1,8 +1,8 @@
-import { ChangeEvent, Dispatch, KeyboardEvent, SetStateAction } from 'react';
+import { ChangeEvent, KeyboardEvent } from 'react';
 
 import { Flex, Input, TagButton, Text } from '@/components';
 import { ToastContext } from '@/contexts';
-import { useCustomContext, useScreenReader } from '@/hooks';
+import { useCustomContext } from '@/hooks';
 import { validateTagLength } from '@/service/validates';
 import { theme } from '@/style/theme';
 
@@ -11,30 +11,21 @@ interface Props {
   handleValue: (e: ChangeEvent<HTMLInputElement>) => void;
   resetValue: () => void;
   tags: string[];
-  setTags: Dispatch<SetStateAction<string[]>>;
+  addTag: (newTag: string) => void;
+  deleteTag: (tag: string) => void;
 }
 
-const TagInput = ({ value, handleValue, resetValue, tags, setTags }: Props) => {
+const TagInput = ({ value, handleValue, resetValue, tags, addTag, deleteTag }: Props) => {
   const { failAlert } = useCustomContext(ToastContext);
-  const { updateScreenReaderMessage } = useScreenReader();
 
   const handleSpaceBarAndEnterKeydown = (e: KeyboardEvent<HTMLInputElement>) => {
     if (e.key === ' ' || e.key === 'Enter') {
       e.preventDefault();
-      addTag();
+      addTag(value);
       resetValue();
     }
   };
 
-  const addTag = () => {
-    if (value === '' || tags.includes(value)) {
-      return;
-    }
-
-    setTags((prev) => [...prev, value]);
-    updateScreenReaderMessage(`${value} 태그 등록`);
-  };
-
   const handleTagInput = (e: ChangeEvent<HTMLInputElement>) => {
     const errorMessage = validateTagLength(e.target.value);
 
@@ -66,16 +57,7 @@ const TagInput = ({ value, handleValue, resetValue, tags, setTags }: Props) => {
         </Flex>
       )}
       <Flex gap='0.25rem' css={{ flexWrap: 'wrap', width: '100%' }}>
-        {tags?.map((tag, idx) => (
-          <TagButton
-            key={idx}
-            variant='edit'
-            name={tag}
-            onClick={() => {
-              setTags((prev) => prev.filter((el) => el !== tag));
-            }}
-          />
-        ))}
+        {tags?.map((tag, idx) => <TagButton key={idx} variant='edit' name={tag} onClick={() => deleteTag(tag)} />)}
       </Flex>
       <Input size='large' variant='outlined'>
         <Input.TextField
@@ -84,7 +66,7 @@ const TagInput = ({ value, handleValue, resetValue, tags, setTags }: Props) => {
           onChange={handleTagInput}
           onKeyUp={handleSpaceBarAndEnterKeydown}
           onBlur={() => {
-            addTag();
+            addTag(value);
             resetValue();
           }}
         />
diff --git a/frontend/src/hooks/template/useTag.ts b/frontend/src/hooks/template/useTag.ts
index 5bf9f1dc9..01e18abfa 100644
--- a/frontend/src/hooks/template/useTag.ts
+++ b/frontend/src/hooks/template/useTag.ts
@@ -1,14 +1,29 @@
 import { useState } from 'react';
 
-import { useNoSpaceInput } from '@/hooks';
+import { useNoSpaceInput, useScreenReader } from '@/hooks';
 
 export const useTag = (initTags: string[]) => {
   const [tags, setTags] = useState<string[]>(initTags);
   const [value, handleValue, resetValue] = useNoSpaceInput('');
+  const { updateScreenReaderMessage } = useScreenReader();
+
+  const addTag = (newTag: string) => {
+    if (newTag === '' || tags.includes(newTag)) {
+      return;
+    }
+
+    setTags((prev) => [...prev, newTag]);
+    updateScreenReaderMessage(`${newTag} 태그 등록`);
+  };
+
+  const deleteTag = (tag: string) => {
+    setTags((prev) => prev.filter((el) => el !== tag));
+  };
 
   return {
     tags,
-    setTags,
+    addTag,
+    deleteTag,
     value,
     handleValue,
     resetValue,
diff --git a/frontend/src/pages/TemplateEditPage/TemplateEditPage.tsx b/frontend/src/pages/TemplateEditPage/TemplateEditPage.tsx
index 64d84781c..70f442a0a 100644
--- a/frontend/src/pages/TemplateEditPage/TemplateEditPage.tsx
+++ b/frontend/src/pages/TemplateEditPage/TemplateEditPage.tsx
@@ -12,6 +12,7 @@ import { ICON_SIZE } from '@/style/styleConstants';
 import { theme } from '@/style/theme';
 import type { Template, TemplateEditRequest } from '@/types';
 import { TemplateVisibility } from '@/types/template';
+import { getLanguageForAutoTag } from '@/utils';
 
 import * as S from './TemplateEditPage.style';
 
@@ -140,6 +141,7 @@ const TemplateEditPage = ({ template, toggleEditButton }: Props) => {
             isValidContentChange={isValidContentChange}
             onChangeContent={(newContent) => handleContentChange(newContent, index)}
             onChangeFilename={(newFilename) => handleFilenameChange(newFilename, index)}
+            onBlurFilename={(newFilename) => tagProps.addTag(getLanguageForAutoTag(newFilename))}
             handleDeleteSourceCode={() => handleDeleteSourceCode(index)}
             filenameAutoFocus={index !== 0}
           />
diff --git a/frontend/src/pages/TemplateUploadPage/TemplateUploadPage.tsx b/frontend/src/pages/TemplateUploadPage/TemplateUploadPage.tsx
index 6e81b2efc..1dc2a705a 100644
--- a/frontend/src/pages/TemplateUploadPage/TemplateUploadPage.tsx
+++ b/frontend/src/pages/TemplateUploadPage/TemplateUploadPage.tsx
@@ -12,6 +12,7 @@ import { ICON_SIZE } from '@/style/styleConstants';
 import { theme } from '@/style/theme';
 import { TemplateUploadRequest } from '@/types';
 import { TemplateVisibility } from '@/types/template';
+import { getLanguageForAutoTag } from '@/utils';
 
 import * as S from './TemplateUploadPage.style';
 
@@ -129,6 +130,7 @@ const TemplateUploadPage = () => {
             isValidContentChange={isValidContentChange}
             onChangeContent={(newContent) => handleContentChange(newContent, index)}
             onChangeFilename={(newFilename) => handleFilenameChange(newFilename, index)}
+            onBlurFilename={(newFilename) => tagProps.addTag(getLanguageForAutoTag(newFilename))}
             handleDeleteSourceCode={() => handleDeleteSourceCode(index)}
             filenameAutoFocus={index !== 0}
           />
diff --git a/frontend/src/utils/getLanguageByFileName.ts b/frontend/src/utils/getLanguageByFileName.ts
index 836dbe254..04dce7fcf 100644
--- a/frontend/src/utils/getLanguageByFileName.ts
+++ b/frontend/src/utils/getLanguageByFileName.ts
@@ -5,6 +5,21 @@ export const getLanguageByFilename = (filename: string) => {
   return language;
 };
 
+export const getLanguageForAutoTag = (filename: string) => {
+  const extension = getFileExtension(filename);
+  const language = getLanguageByExtension(extension);
+
+  if (extension === 'jsx' || extension === 'tsx') {
+    return 'react';
+  }
+
+  if (language === 'plaintext') {
+    return '';
+  }
+
+  return language;
+};
+
 const getFileExtension = (filename: string) => {
   if (filename.includes('.')) {
     const parts = filename.split('.');
diff --git a/frontend/src/utils/index.ts b/frontend/src/utils/index.ts
index 3af87010a..302a327fd 100644
--- a/frontend/src/utils/index.ts
+++ b/frontend/src/utils/index.ts
@@ -1,7 +1,7 @@
 export { formatRelativeTime } from './formatRelativeTime';
 export { formatWithK } from './formatWithK';
 export { getByteSize } from './getByteSize';
-export { getLanguageByFilename } from './getLanguageByFileName';
+export { getLanguageByFilename, getLanguageForAutoTag } from './getLanguageByFileName';
 export { remToPx } from './remToPx';
 export { scroll } from './scroll';
 export { getChildOfType, getChildrenWithoutTypes } from './reactChildrenHelpers';