diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index cc03389..e2cfa8d 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,15 +4,9 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="b30e2810-c4c1-4aad-b134-794e52cc1c7d" name="Changes" comment="feat: csv to json">
+    <list default="true" id="b30e2810-c4c1-4aad-b134-794e52cc1c7d" name="Changes" comment="refactor: use ToolContent">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/components/ToolContent.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/components/ToolContent.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/pages/tools/number/arithmetic-sequence/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/number/arithmetic-sequence/index.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/pages/tools/string/create-palindrome/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/string/create-palindrome/index.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/pages/tools/string/create-palindrome/meta.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/string/create-palindrome/meta.ts" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/pages/tools/string/extract-substring/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/string/extract-substring/index.tsx" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/pages/tools/string/split/meta.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/string/split/meta.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/tools/defineTool.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/tools/defineTool.tsx" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -339,15 +333,7 @@
       <workItem from="1740880919391" duration="4395000" />
       <workItem from="1740923024259" duration="23000" />
       <workItem from="1740933006573" duration="3679000" />
-      <workItem from="1741475969294" duration="6527000" />
-    </task>
-    <task id="LOCAL-00102" summary="fix: ctrl v">
-      <option name="closed" value="true" />
-      <created>1740267666455</created>
-      <option name="number" value="00102" />
-      <option name="presentableId" value="LOCAL-00102" />
-      <option name="project" value="LOCAL" />
-      <updated>1740267666455</updated>
+      <workItem from="1741475969294" duration="6863000" />
     </task>
     <task id="LOCAL-00103" summary="feat: update readme">
       <option name="closed" value="true" />
@@ -733,7 +719,15 @@
       <option name="project" value="LOCAL" />
       <updated>1741480927080</updated>
     </task>
-    <option name="localTasksCounter" value="151" />
+    <task id="LOCAL-00151" summary="refactor: use ToolContent">
+      <option name="closed" value="true" />
+      <created>1741483345639</created>
+      <option name="number" value="00151" />
+      <option name="presentableId" value="LOCAL-00151" />
+      <option name="project" value="LOCAL" />
+      <updated>1741483345639</updated>
+    </task>
+    <option name="localTasksCounter" value="152" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -792,7 +786,6 @@
     <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="fix: bg" />
     <MESSAGE value="chore: handle enter press on search" />
     <MESSAGE value="chore: show tooloptions in example" />
     <MESSAGE value="refact: examples" />
@@ -817,7 +810,8 @@
     <MESSAGE value="chore: update meta" />
     <MESSAGE value="feat: change pgn opacity" />
     <MESSAGE value="feat: csv to json" />
-    <option name="LAST_COMMIT_MESSAGE" value="feat: csv to json" />
+    <MESSAGE value="refactor: use ToolContent" />
+    <option name="LAST_COMMIT_MESSAGE" value="refactor: use ToolContent" />
   </component>
   <component name="XSLT-Support.FileAssociations.UIState">
     <expand />
diff --git a/src/pages/tools/string/extract-substring/index.tsx b/src/pages/tools/string/extract-substring/index.tsx
index a5b7a5e..43756a0 100644
--- a/src/pages/tools/string/extract-substring/index.tsx
+++ b/src/pages/tools/string/extract-substring/index.tsx
@@ -1,17 +1,13 @@
-import { Box } from '@mui/material';
-import React, { useState, useRef } from 'react';
+import React, { useState } from 'react';
 import ToolTextInput from '@components/input/ToolTextInput';
 import ToolTextResult from '@components/result/ToolTextResult';
-import ToolOptions, { GetGroupsType } from '@components/options/ToolOptions';
+import { GetGroupsType } from '@components/options/ToolOptions';
 import { extractSubstring } from './service';
 import TextFieldWithDesc from '@components/options/TextFieldWithDesc';
 import CheckboxWithDesc from '@components/options/CheckboxWithDesc';
-import ToolInputAndResult from '@components/ToolInputAndResult';
-import ToolExamples, {
-  CardExampleType
-} from '@components/examples/ToolExamples';
+import { CardExampleType } from '@components/examples/ToolExamples';
 import { ToolComponentProps } from '@tools/defineTool';
-import { FormikProps } from 'formik';
+import ToolContent from '@components/ToolContent';
 
 const initialValues = {
   start: '1',
@@ -48,7 +44,7 @@ const exampleCards: CardExampleType<typeof initialValues>[] = [
     title: 'Multi-line Extraction with Reversal',
     description: 'Extract characters 1-3 from each line and reverse them.',
     sampleText: 'First line\nSecond line\nThird line',
-    sampleResult: 'riF\neS\nihT',
+    sampleResult: 'riF\nceS\nihT',
     sampleOptions: {
       ...initialValues,
       start: '1',
@@ -62,7 +58,6 @@ const exampleCards: CardExampleType<typeof initialValues>[] = [
 export default function ExtractSubstring({ title }: ToolComponentProps) {
   const [input, setInput] = useState<string>('');
   const [result, setResult] = useState<string>('');
-  const formRef = useRef<FormikProps<typeof initialValues>>(null);
 
   const computeExternal = (
     optionsValues: typeof initialValues,
@@ -128,25 +123,20 @@ export default function ExtractSubstring({ title }: ToolComponentProps) {
   ];
 
   return (
-    <Box>
-      <ToolInputAndResult
-        input={<ToolTextInput value={input} onChange={setInput} />}
-        result={<ToolTextResult title={'Extracted text'} value={result} />}
-      />
-      <ToolOptions
-        compute={computeExternal}
-        getGroups={getGroups}
-        initialValues={initialValues}
-        input={input}
-        formRef={formRef}
-      />
-      <ToolExamples
-        title={title}
-        exampleCards={exampleCards}
-        getGroups={getGroups}
-        formRef={formRef}
-        setInput={setInput}
-      />
-    </Box>
+    <ToolContent
+      title={title}
+      initialValues={initialValues}
+      getGroups={getGroups}
+      compute={computeExternal}
+      input={input}
+      setInput={setInput}
+      inputComponent={
+        <ToolTextInput title={'Input text'} value={input} onChange={setInput} />
+      }
+      resultComponent={
+        <ToolTextResult title={'Extracted text'} value={result} />
+      }
+      exampleCards={exampleCards}
+    />
   );
 }