diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 5d8fccb..4a8295d 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,11 +4,10 @@
     <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="fix:">
       <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/pages/tools/time/crontab-guru/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/time/crontab-guru/index.tsx" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/time/crontab-guru/meta.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/time/crontab-guru/meta.ts" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -41,178 +40,178 @@
     &quot;state&quot;: &quot;OPEN&quot;
   }
 }</component>
-  <component name="GitHubPullRequestState"><![CDATA[{
-  "prStates": [
+  <component name="GitHubPullRequestState">{
+  &quot;prStates&quot;: [
     {
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-        "id": "PR_kwDOMJIfts51PkS9",
-        "number": 22
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts51PkS9&quot;,
+        &quot;number&quot;: 22
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+      &quot;lastSeen&quot;: 1741207144695
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     {
-      "id": {
-        "id": "PR_kwDOMJIfts6NiNYl",
-        "number": 32
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6NiNYl&quot;,
+        &quot;number&quot;: 32
       },
-      "lastSeen": 1741209723869
+      &quot;lastSeen&quot;: 1741209723869
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6Nheyd",
-        "number": 31
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6Nheyd&quot;,
+        &quot;number&quot;: 31
       },
-      "lastSeen": 1741213371410
+      &quot;lastSeen&quot;: 1741213371410
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6NmRBs",
-        "number": 33
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6NmRBs&quot;,
+        &quot;number&quot;: 33
       },
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+      &quot;lastSeen&quot;: 1741282429036
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-      "id": {
-        "id": "PR_kwDOMJIfts5zyFTs",
-        "number": 15
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts5zyFTs&quot;,
+        &quot;number&quot;: 15
       },
-      "lastSeen": 1741535540953
+      &quot;lastSeen&quot;: 1741535540953
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6QQB3c",
-        "number": 59
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6QQB3c&quot;,
+        &quot;number&quot;: 59
       },
-      "lastSeen": 1743018960900
+      &quot;lastSeen&quot;: 1743018960900
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6QMPEg",
-        "number": 58
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6QMPEg&quot;,
+        &quot;number&quot;: 58
       },
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+      &quot;lastSeen&quot;: 1743019452983
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     {
-      "id": {
-        "id": "PR_kwDOMJIfts6QZvRI",
-        "number": 61
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6QZvRI&quot;,
+        &quot;number&quot;: 61
       },
-      "lastSeen": 1743103196866
+      &quot;lastSeen&quot;: 1743103196866
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-        "id": "PR_kwDOMJIfts6QqPrQ",
-        "number": 73
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6QqPrQ&quot;,
+        &quot;number&quot;: 73
       },
-      "lastSeen": 1743265865001
+      &quot;lastSeen&quot;: 1743265865001
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6Qp5nI",
-        "number": 72
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6Qp5nI&quot;,
+        &quot;number&quot;: 72
       },
-      "lastSeen": 1743338472110
+      &quot;lastSeen&quot;: 1743338472110
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6QsjlS",
-        "number": 76
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6QsjlS&quot;,
+        &quot;number&quot;: 76
       },
-      "lastSeen": 1743352150953
+      &quot;lastSeen&quot;: 1743352150953
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-      "id": {
-        "id": "PR_kwDOMJIfts6Q0JBe",
-        "number": 82
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6Q0JBe&quot;,
+        &quot;number&quot;: 82
       },
-      "lastSeen": 1743470267269
+      &quot;lastSeen&quot;: 1743470267269
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-      "id": {
-        "id": "PR_kwDOMJIfts6UE9-x",
-        "number": 102
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6UE9-x&quot;,
+        &quot;number&quot;: 102
       },
-      "lastSeen": 1747171977348
+      &quot;lastSeen&quot;: 1747171977348
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6XPua_",
-        "number": 117
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6XPua_&quot;,
+        &quot;number&quot;: 117
       },
-      "lastSeen": 1747929835864
+      &quot;lastSeen&quot;: 1747929835864
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6XY-mZ",
-        "number": 119
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6XY-mZ&quot;,
+        &quot;number&quot;: 119
       },
-      "lastSeen": 1748028108508
+      &quot;lastSeen&quot;: 1748028108508
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6Xdz4n",
-        "number": 120
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6Xdz4n&quot;,
+        &quot;number&quot;: 120
       },
-      "lastSeen": 1748282672214
+      &quot;lastSeen&quot;: 1748282672214
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6X_zxl",
-        "number": 131
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6X_zxl&quot;,
+        &quot;number&quot;: 131
       },
-      "lastSeen": 1748881279494
+      &quot;lastSeen&quot;: 1748881279494
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6bhieT",
-        "number": 152
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6bhieT&quot;,
+        &quot;number&quot;: 152
       },
-      "lastSeen": 1751848489082
+      &quot;lastSeen&quot;: 1751848489082
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6dOyRk",
-        "number": 154
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6dOyRk&quot;,
+        &quot;number&quot;: 154
       },
-      "lastSeen": 1751849436454
+      &quot;lastSeen&quot;: 1751849436454
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6cHjNi",
-        "number": 153
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6cHjNi&quot;,
+        &quot;number&quot;: 153
       },
-      "lastSeen": 1751849501498
+      &quot;lastSeen&quot;: 1751849501498
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6Zs1FN",
-        "number": 145
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6Zs1FN&quot;,
+        &quot;number&quot;: 145
       },
-      "lastSeen": 1751849770308
+      &quot;lastSeen&quot;: 1751849770308
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6bgKi9",
-        "number": 150
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6bgKi9&quot;,
+        &quot;number&quot;: 150
       },
-      "lastSeen": 1751850367300
+      &quot;lastSeen&quot;: 1751850367300
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6dv21R",
-        "number": 162
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6dv21R&quot;,
+        &quot;number&quot;: 162
       },
-      "lastSeen": 1751893739514
+      &quot;lastSeen&quot;: 1751893739514
     },
     {
-      "id": {
-        "id": "PR_kwDOMJIfts6dwQJi",
-        "number": 163
+      &quot;id&quot;: {
+        &quot;id&quot;: &quot;PR_kwDOMJIfts6dwQJi&quot;,
+        &quot;number&quot;: 163
       },
-      "lastSeen": 1751893861615
+      &quot;lastSeen&quot;: 1751893861615
     }
   ]
-}]]></component>
+}</component>
   <component name="GithubPullRequestsUISettings">{
   &quot;selectedUrlAndAccountId&quot;: {
     &quot;url&quot;: &quot;https://github.com/iib0011/omni-tools.git&quot;,
@@ -244,56 +243,56 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "ASKED_ADD_EXTERNAL_FILES": "true",
-    "ASKED_SHARE_PROJECT_CONFIGURATION_FILES": "true",
-    "Docker.Dockerfile build.executor": "Run",
-    "Docker.Dockerfile.executor": "Run",
-    "Playwright.Create transparent PNG.should make png color transparent.executor": "Run",
-    "Playwright.JoinText Component.executor": "Run",
-    "Playwright.JoinText Component.should merge text pieces with specified join character.executor": "Run",
-    "RunOnceActivity.OpenProjectViewOnStart": "true",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "RunOnceActivity.git.unshallow": "true",
-    "Vitest.compute function (1).executor": "Run",
-    "Vitest.compute function.executor": "Run",
-    "Vitest.mergeText.executor": "Run",
-    "Vitest.mergeText.should merge lines and preserve blank lines when deleteBlankLines is false.executor": "Run",
-    "Vitest.mergeText.should merge lines, preserve blank lines and trailing spaces when both deleteBlankLines and deleteTrailingSpaces are false.executor": "Run",
-    "Vitest.parsePageRanges.executor": "Run",
-    "Vitest.removeDuplicateLines function.executor": "Run",
-    "Vitest.removeDuplicateLines function.newlines option.executor": "Run",
-    "Vitest.removeDuplicateLines function.newlines option.should filter newlines when newlines is set to filter.executor": "Run",
-    "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",
-    "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",
-    "node.js.detected.package.eslint": "true",
-    "node.js.detected.package.tslint": "true",
-    "node.js.selected.package.eslint": "(autodetect)",
-    "node.js.selected.package.tslint": "(autodetect)",
-    "nodejs_package_manager_path": "npm",
-    "npm.build.executor": "Run",
-    "npm.dev.executor": "Run",
-    "npm.lint.executor": "Run",
-    "npm.prebuild.executor": "Run",
-    "npm.script:create:tool.executor": "Run",
-    "npm.test.executor": "Run",
-    "npm.test:e2e.executor": "Run",
-    "npm.test:e2e:run.executor": "Run",
-    "prettierjs.PrettierConfiguration.Package": "C:\\Users\\Ibrahima\\IdeaProjects\\omni-tools\\node_modules\\prettier",
-    "project.structure.last.edited": "Problems",
-    "project.structure.proportion": "0.0",
-    "project.structure.side.proportion": "0.2",
-    "settings.editor.selected.configurable": "refactai_advanced_settings",
-    "ts.external.directory.path": "C:\\Users\\Ibrahima\\IdeaProjects\\omni-tools\\node_modules\\typescript\\lib",
-    "vue.rearranger.settings.migration": "true"
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;ASKED_ADD_EXTERNAL_FILES&quot;: &quot;true&quot;,
+    &quot;ASKED_SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
+    &quot;Docker.Dockerfile build.executor&quot;: &quot;Run&quot;,
+    &quot;Docker.Dockerfile.executor&quot;: &quot;Run&quot;,
+    &quot;Playwright.Create transparent PNG.should make png color transparent.executor&quot;: &quot;Run&quot;,
+    &quot;Playwright.JoinText Component.executor&quot;: &quot;Run&quot;,
+    &quot;Playwright.JoinText Component.should merge text pieces with specified join character.executor&quot;: &quot;Run&quot;,
+    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.git.unshallow&quot;: &quot;true&quot;,
+    &quot;Vitest.compute function (1).executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.compute function.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.mergeText.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.mergeText.should merge lines and preserve blank lines when deleteBlankLines is false.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.mergeText.should merge lines, preserve blank lines and trailing spaces when both deleteBlankLines and deleteTrailingSpaces are false.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.parsePageRanges.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.removeDuplicateLines function.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.removeDuplicateLines function.newlines option.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.removeDuplicateLines function.newlines option.should filter newlines when newlines is set to filter.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.replaceText function (regexp mode).should return the original text when passed an invalid regexp.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.replaceText function.executor&quot;: &quot;Run&quot;,
+    &quot;Vitest.timeBetweenDates.executor&quot;: &quot;Run&quot;,
+    &quot;git-widget-placeholder&quot;: &quot;#167 on fork/AshAnand34/crontab-guru-tool&quot;,
+    &quot;ignore.virus.scanning.warn.message&quot;: &quot;true&quot;,
+    &quot;kotlin-language-version-configured&quot;: &quot;true&quot;,
+    &quot;last_opened_file_path&quot;: &quot;C:/Users/Ibrahima/IdeaProjects/omni-tools/src/pages/tools/json&quot;,
+    &quot;node.js.detected.package.eslint&quot;: &quot;true&quot;,
+    &quot;node.js.detected.package.tslint&quot;: &quot;true&quot;,
+    &quot;node.js.selected.package.eslint&quot;: &quot;(autodetect)&quot;,
+    &quot;node.js.selected.package.tslint&quot;: &quot;(autodetect)&quot;,
+    &quot;nodejs_package_manager_path&quot;: &quot;npm&quot;,
+    &quot;npm.build.executor&quot;: &quot;Run&quot;,
+    &quot;npm.dev.executor&quot;: &quot;Run&quot;,
+    &quot;npm.lint.executor&quot;: &quot;Run&quot;,
+    &quot;npm.prebuild.executor&quot;: &quot;Run&quot;,
+    &quot;npm.script:create:tool.executor&quot;: &quot;Run&quot;,
+    &quot;npm.test.executor&quot;: &quot;Run&quot;,
+    &quot;npm.test:e2e.executor&quot;: &quot;Run&quot;,
+    &quot;npm.test:e2e:run.executor&quot;: &quot;Run&quot;,
+    &quot;prettierjs.PrettierConfiguration.Package&quot;: &quot;C:\\Users\\Ibrahima\\IdeaProjects\\omni-tools\\node_modules\\prettier&quot;,
+    &quot;project.structure.last.edited&quot;: &quot;Problems&quot;,
+    &quot;project.structure.proportion&quot;: &quot;0.0&quot;,
+    &quot;project.structure.side.proportion&quot;: &quot;0.2&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;refactai_advanced_settings&quot;,
+    &quot;ts.external.directory.path&quot;: &quot;C:\\Users\\Ibrahima\\IdeaProjects\\omni-tools\\node_modules\\typescript\\lib&quot;,
+    &quot;vue.rearranger.settings.migration&quot;: &quot;true&quot;
   }
-}]]></component>
+}</component>
   <component name="ReactDesignerToolWindowState">
     <option name="myId2Visible">
       <map>
diff --git a/src/pages/tools/time/crontab-guru/index.tsx b/src/pages/tools/time/crontab-guru/index.tsx
index d5785db..11246e7 100644
--- a/src/pages/tools/time/crontab-guru/index.tsx
+++ b/src/pages/tools/time/crontab-guru/index.tsx
@@ -1,12 +1,11 @@
-import { Box, Typography, Alert, Button, Stack } from '@mui/material';
+import { Alert } from '@mui/material';
 import React, { useState } from 'react';
 import ToolContent from '@components/ToolContent';
 import { ToolComponentProps } from '@tools/defineTool';
 import ToolTextInput from '@components/input/ToolTextInput';
 import ToolTextResult from '@components/result/ToolTextResult';
-import { GetGroupsType } from '@components/options/ToolOptions';
 import { CardExampleType } from '@components/examples/ToolExamples';
-import { main, validateCrontab, explainCrontab } from './service';
+import { main, validateCrontab } from './service';
 
 const initialValues = {};
 
@@ -59,45 +58,21 @@ export default function CrontabGuru({
     setResult(main(input, values));
   };
 
-  const handleExample = (expr: string) => {
-    setInput(expr);
-    setHasInteracted(true);
-    setIsValid(validateCrontab(expr));
-    setResult(main(expr, initialValues));
-  };
-
   const handleInputChange = (val: string) => {
     if (!hasInteracted) setHasInteracted(true);
     setInput(val);
   };
 
-  const getGroups: GetGroupsType<InitialValuesType> | null = () => [];
-
   return (
     <ToolContent
       title={title}
       input={input}
       inputComponent={
-        <>
-          <ToolTextInput
-            value={input}
-            onChange={handleInputChange}
-            placeholder="e.g. 35 16 * * 0-5"
-          />
-          <Stack direction="row" spacing={1} mt={1}>
-            {exampleCards.map((ex, i) => (
-              <Button
-                key={i}
-                size="small"
-                variant="outlined"
-                onClick={() => ex.sampleText && handleExample(ex.sampleText)}
-                disabled={!ex.sampleText}
-              >
-                {ex.title}
-              </Button>
-            ))}
-          </Stack>
-        </>
+        <ToolTextInput
+          value={input}
+          onChange={handleInputChange}
+          placeholder="e.g. 35 16 * * 0-5"
+        />
       }
       resultComponent={
         <div style={{ position: 'relative', minHeight: 80 }}>
@@ -144,7 +119,7 @@ export default function CrontabGuru({
       }
       initialValues={initialValues}
       exampleCards={exampleCards}
-      getGroups={getGroups}
+      getGroups={null}
       setInput={setInput}
       compute={compute}
       toolInfo={{ title: `What is a ${title}?`, description: longDescription }}
diff --git a/src/pages/tools/time/crontab-guru/meta.ts b/src/pages/tools/time/crontab-guru/meta.ts
index 7ae5994..1ce0744 100644
--- a/src/pages/tools/time/crontab-guru/meta.ts
+++ b/src/pages/tools/time/crontab-guru/meta.ts
@@ -2,7 +2,7 @@ import { defineTool } from '@tools/defineTool';
 import { lazy } from 'react';
 
 export const tool = defineTool('time', {
-  name: 'Crontab Guru',
+  name: 'Crontab explainer',
   path: 'crontab-guru',
   icon: 'mdi:calendar-clock',
   description: