diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 5d8fccb..b9472f7 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,11 +4,15 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="b30e2810-c4c1-4aad-b134-794e52cc1c7d" name="Changes" comment="chore: add array key">
+    <list default="true" id="b30e2810-c4c1-4aad-b134-794e52cc1c7d" name="Changes" comment="feat: groupBy tools autocomplete">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/components/Hero.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/components/Hero.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/pages/tools-by-category/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools-by-category/index.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/utils/string.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/utils/string.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/components/input/ToolMultipleAudioInput.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/components/input/ToolMultipleAudioInput.tsx" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/audio/extract-audio/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/audio/extract-audio/index.tsx" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/audio/extract-audio/service.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/audio/extract-audio/service.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/index.tsx" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/meta.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/meta.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/service.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/audio/merge-audio/service.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/tools/index.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/tools/index.ts" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -22,7 +26,7 @@
     <option name="PUSH_AUTO_UPDATE" value="true" />
     <option name="RECENT_BRANCH_BY_REPOSITORY">
       <map>
-        <entry key="$PROJECT_DIR$" value="fork/y1hao/dark" />
+        <entry key="$PROJECT_DIR$" value="fork/y1hao/grouping" />
       </map>
     </option>
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
@@ -209,7 +213,21 @@
         "id": "PR_kwDOMJIfts6dwQJi",
         "number": 163
       },
-      "lastSeen": 1751893861615
+      "lastSeen": 1751894349626
+    },
+    {
+      "id": {
+        "id": "PR_kwDOMJIfts6drHMN",
+        "number": 160
+      },
+      "lastSeen": 1751991164761
+    },
+    {
+      "id": {
+        "id": "PR_kwDOMJIfts6d1nEd",
+        "number": 165
+      },
+      "lastSeen": 1751992541880
     }
   ]
 }]]></component>
@@ -268,7 +286,7 @@
     "Vitest.replaceText function (regexp mode).should return the original text when passed an invalid regexp.executor": "Run",
     "Vitest.replaceText function.executor": "Run",
     "Vitest.timeBetweenDates.executor": "Run",
-    "git-widget-placeholder": "#163 on fork/y1hao/grouping",
+    "git-widget-placeholder": "#165 on fork/AshAnand34/audio-feature-addition",
     "ignore.virus.scanning.warn.message": "true",
     "kotlin-language-version-configured": "true",
     "last_opened_file_path": "C:/Users/Ibrahima/IdeaProjects/omni-tools/src/pages/tools/json",
@@ -509,15 +527,8 @@
       <workItem from="1749047510481" duration="879000" />
       <workItem from="1751846528195" duration="4358000" />
       <workItem from="1751852868038" duration="680000" />
-      <workItem from="1751893034799" duration="1192000" />
-    </task>
-    <task id="LOCAL-00159" summary="refactor: sum">
-      <option name="closed" value="true" />
-      <created>1741544086061</created>
-      <option name="number" value="00159" />
-      <option name="presentableId" value="LOCAL-00159" />
-      <option name="project" value="LOCAL" />
-      <updated>1741544086061</updated>
+      <workItem from="1751893034799" duration="1868000" />
+      <workItem from="1751991143661" duration="1750000" />
     </task>
     <task id="LOCAL-00160" summary="fix: tools by category scroll">
       <option name="closed" value="true" />
@@ -903,7 +914,15 @@
       <option name="project" value="LOCAL" />
       <updated>1751893722720</updated>
     </task>
-    <option name="localTasksCounter" value="208" />
+    <task id="LOCAL-00208" summary="feat: groupBy tools autocomplete">
+      <option name="closed" value="true" />
+      <created>1751894332017</created>
+      <option name="number" value="00208" />
+      <option name="presentableId" value="LOCAL-00208" />
+      <option name="project" value="LOCAL" />
+      <updated>1751894332017</updated>
+    </task>
+    <option name="localTasksCounter" value="209" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -950,7 +969,6 @@
     <option name="CHECK_CODE_SMELLS_BEFORE_PROJECT_COMMIT" value="false" />
     <option name="CHECK_NEW_TODO" value="false" />
     <option name="ADD_EXTERNAL_FILES_SILENTLY" value="true" />
-    <MESSAGE value="refactor: compress pdf" />
     <MESSAGE value="refactor: lib" />
     <MESSAGE value="fix: path" />
     <MESSAGE value="fix: vite worker format" />
@@ -975,7 +993,8 @@
     <MESSAGE value="fix: tsc" />
     <MESSAGE value="chore: remove .codebuddy" />
     <MESSAGE value="chore: add array key" />
-    <option name="LAST_COMMIT_MESSAGE" value="chore: add array key" />
+    <MESSAGE value="feat: groupBy tools autocomplete" />
+    <option name="LAST_COMMIT_MESSAGE" value="feat: groupBy tools autocomplete" />
   </component>
   <component name="VgoProject">
     <integration-enabled>false</integration-enabled>
diff --git a/src/components/input/ToolMultipleAudioInput.tsx b/src/components/input/ToolMultipleAudioInput.tsx
index 938c35a..daba468 100644
--- a/src/components/input/ToolMultipleAudioInput.tsx
+++ b/src/components/input/ToolMultipleAudioInput.tsx
@@ -27,9 +27,7 @@ export default function ToolMultipleAudioInput({
   title,
   type
 }: MultiAudioInputComponentProps) {
-  const theme = useTheme();
   const fileInputRef = useRef<HTMLInputElement>(null);
-  const { showSnackBar } = useContext(CustomSnackBarContext);
 
   const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
     const files = event.target.files;
diff --git a/src/pages/tools/audio/change-speed/index.tsx b/src/pages/tools/audio/change-speed/index.tsx
index d995055..de4ef26 100644
--- a/src/pages/tools/audio/change-speed/index.tsx
+++ b/src/pages/tools/audio/change-speed/index.tsx
@@ -181,7 +181,7 @@ export default function ChangeSpeed({
       getGroups={getGroups}
       setInput={setInput}
       compute={compute}
-      toolInfo={{ title: `What is a ${title}?`, description: longDescription }}
+      toolInfo={{ title: `What is ${title}?`, description: longDescription }}
     />
   );
 }
diff --git a/src/pages/tools/audio/extract-audio/index.tsx b/src/pages/tools/audio/extract-audio/index.tsx
index 77e0f48..f5012ec 100644
--- a/src/pages/tools/audio/extract-audio/index.tsx
+++ b/src/pages/tools/audio/extract-audio/index.tsx
@@ -1,12 +1,5 @@
-import {
-  Box,
-  FormControl,
-  InputLabel,
-  MenuItem,
-  Select,
-  SelectChangeEvent
-} from '@mui/material';
-import React, { useState, useEffect, useRef } from 'react';
+import { Box } from '@mui/material';
+import React, { useState } from 'react';
 import ToolContent from '@components/ToolContent';
 import { ToolComponentProps } from '@tools/defineTool';
 import { extractAudioFromVideo } from './service';
@@ -28,7 +21,6 @@ export default function ExtractAudio({
   const [audioFile, setAudioFile] = useState<File | null>(null);
   const [loading, setLoading] = useState(false);
 
-  // Tool Options section for output format
   const getGroups: GetGroupsType<InitialValuesType> = ({
     values,
     updateField
@@ -58,13 +50,12 @@ export default function ExtractAudio({
     ];
   };
 
-  // Compute function for ToolContent (no-op, extraction is handled by effect)
   const compute = async (values: InitialValuesType, input: File | null) => {
     if (!input) return;
     try {
       setLoading(true);
       const audioFileObj = await extractAudioFromVideo(input, values);
-      await setAudioFile(audioFileObj);
+      setAudioFile(audioFileObj);
     } catch (err) {
       console.error(err);
     } finally {
@@ -84,15 +75,10 @@ export default function ExtractAudio({
           <ToolFileResult
             title={'Extracting Audio'}
             value={null}
-            extension={''}
             loading={true}
           />
         ) : (
-          <ToolFileResult
-            title={'Extracted Audio'}
-            value={audioFile}
-            extension={initialValues.outputFormat}
-          />
+          <ToolFileResult title={'Extracted Audio'} value={audioFile} />
         )
       }
       initialValues={initialValues}
diff --git a/src/pages/tools/audio/extract-audio/service.ts b/src/pages/tools/audio/extract-audio/service.ts
index 36ec1c2..e9bb578 100644
--- a/src/pages/tools/audio/extract-audio/service.ts
+++ b/src/pages/tools/audio/extract-audio/service.ts
@@ -20,7 +20,7 @@ export async function extractAudioFromVideo(
 
   const configuredOutputAudioFormat = options.outputFormat;
   const outputName = `output.${configuredOutputAudioFormat}`;
-  let args: string[] = ['-i', inputName, '-vn'];
+  const args: string[] = ['-i', inputName, '-vn'];
 
   if (configuredOutputAudioFormat === 'mp3') {
     args.push(
diff --git a/src/pages/tools/audio/merge-audio/index.tsx b/src/pages/tools/audio/merge-audio/index.tsx
index 1a98cd8..09acd35 100644
--- a/src/pages/tools/audio/merge-audio/index.tsx
+++ b/src/pages/tools/audio/merge-audio/index.tsx
@@ -106,7 +106,7 @@ export default function MergeAudio({
       getGroups={getGroups}
       setInput={setInput}
       compute={compute}
-      toolInfo={{ title: `What is a ${title}?`, description: longDescription }}
+      toolInfo={{ title: `What is ${title}?`, description: longDescription }}
     />
   );
 }
diff --git a/src/pages/tools/audio/merge-audio/meta.ts b/src/pages/tools/audio/merge-audio/meta.ts
index 3420eb9..dc1775a 100644
--- a/src/pages/tools/audio/merge-audio/meta.ts
+++ b/src/pages/tools/audio/merge-audio/meta.ts
@@ -4,7 +4,7 @@ import { lazy } from 'react';
 export const tool = defineTool('audio', {
   name: 'Merge Audio',
   path: 'merge-audio',
-  icon: 'mdi:music-note-multiple',
+  icon: 'fluent:merge-20-regular',
   description:
     'Combine multiple audio files into a single audio file by concatenating them in sequence.',
   shortDescription: 'Merge multiple audio files into one (MP3, AAC, WAV).',
diff --git a/src/pages/tools/audio/merge-audio/service.ts b/src/pages/tools/audio/merge-audio/service.ts
index d0ba10d..3c9da4e 100644
--- a/src/pages/tools/audio/merge-audio/service.ts
+++ b/src/pages/tools/audio/merge-audio/service.ts
@@ -36,7 +36,7 @@ export async function mergeAudioFiles(
   await ffmpeg.writeFile(fileListName, fileListContent);
 
   // Build FFmpeg arguments for merging
-  let args: string[] = ['-f', 'concat', '-safe', '0', '-i', fileListName];
+  const args: string[] = ['-f', 'concat', '-safe', '0', '-i', fileListName];
 
   // Add format-specific arguments
   if (outputFormat === 'mp3') {
diff --git a/src/pages/tools/audio/trim/index.tsx b/src/pages/tools/audio/trim/index.tsx
index c3bd84b..07fed95 100644
--- a/src/pages/tools/audio/trim/index.tsx
+++ b/src/pages/tools/audio/trim/index.tsx
@@ -122,7 +122,7 @@ export default function Trim({ title, longDescription }: ToolComponentProps) {
       getGroups={getGroups}
       setInput={setInput}
       compute={compute}
-      toolInfo={{ title: `What is a ${title}?`, description: longDescription }}
+      toolInfo={{ title: `What is ${title}?`, description: longDescription }}
     />
   );
 }
diff --git a/src/tools/index.ts b/src/tools/index.ts
index 3ebd631..1cd3684 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -1,7 +1,7 @@
 import { stringTools } from '../pages/tools/string';
 import { imageTools } from '../pages/tools/image';
 import { DefinedTool, ToolCategory } from './defineTool';
-import { capitalizeFirstLetter } from '../utils/string';
+import { capitalizeFirstLetter } from '@utils/string';
 import { numberTools } from '../pages/tools/number';
 import { videoTools } from '../pages/tools/video';
 import { audioTools } from 'pages/tools/audio';
@@ -15,17 +15,17 @@ import { pdfTools } from '../pages/tools/pdf';
 
 const toolCategoriesOrder: ToolCategory[] = [
   'image-generic',
-  'string',
-  'json',
   'pdf',
+  'string',
   'video',
+  'time',
+  'audio',
+  'json',
   'list',
   'csv',
   'number',
   'png',
-  'time',
-  'gif',
-  'audio'
+  'gif'
 ];
 export const tools: DefinedTool[] = [
   ...imageTools,
@@ -121,7 +121,7 @@ const categoriesConfig: {
   },
   {
     type: 'audio',
-    icon: 'rivet-icons:audio',
+    icon: 'ic:twotone-audiotrack',
     value:
       'Tools for working with audio – extract audio from video, adjusting audio speed, merging multiple audio files and much more.'
   }