diff --git a/src/tools/index.ts b/src/tools/index.ts
index 52bdf8e3..47a0395b 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -1,6 +1,7 @@
 import { tool as base64FileConverter } from './base64-file-converter';
 import { tool as base64StringConverter } from './base64-string-converter';
 import { tool as basicAuthGenerator } from './basic-auth-generator';
+import { tool as smartTextReplacer } from './smart-text-replacer';
 import { tool as pdfSignatureChecker } from './pdf-signature-checker';
 import { tool as numeronymGenerator } from './numeronym-generator';
 import { tool as macAddressGenerator } from './mac-address-generator';
@@ -155,7 +156,15 @@ export const toolsByCategory: ToolCategory[] = [
   },
   {
     name: 'Text',
-    components: [loremIpsumGenerator, textStatistics, emojiPicker, stringObfuscator, textDiff, numeronymGenerator],
+    components: [
+      loremIpsumGenerator,
+      textStatistics,
+      emojiPicker,
+      stringObfuscator,
+      textDiff,
+      numeronymGenerator,
+      smartTextReplacer,
+    ],
   },
   {
     name: 'Data',
diff --git a/src/tools/smart-text-replacer/index.ts b/src/tools/smart-text-replacer/index.ts
new file mode 100644
index 00000000..a0f93fde
--- /dev/null
+++ b/src/tools/smart-text-replacer/index.ts
@@ -0,0 +1,13 @@
+import { Search } from '@vicons/tabler';
+import { defineTool } from '../tool';
+import { translate } from '@/plugins/i18n.plugin';
+
+export const tool = defineTool({
+  name: translate('tools.smart-text-replacer.title'),
+  path: '/smart-text-replacer',
+  description: translate('tools.smart-text-replacer.description'),
+  keywords: ['smart', 'text-replacer', 'linebreak', 'remove', 'add', 'split', 'search', 'replace'],
+  component: () => import('./smart-text-replacer.vue'),
+  icon: Search,
+  createdAt: new Date('2024-04-03'),
+});
diff --git a/src/tools/smart-text-replacer/smart-text-replacer.vue b/src/tools/smart-text-replacer/smart-text-replacer.vue
new file mode 100644
index 00000000..74b7695b
--- /dev/null
+++ b/src/tools/smart-text-replacer/smart-text-replacer.vue
@@ -0,0 +1,204 @@
+<script setup lang="ts">
+import { useCopy } from '@/composable/copy';
+
+const str = ref('Lorem ipsum dolor sit amet DOLOR Lorem ipsum dolor sit amet DOLOR');
+const findWhat = ref('');
+const replaceWith = ref('');
+const matchCase = ref(false);
+const keepLineBreaks = ref(true);
+const addLineBreakPlace = ref('before');
+const addLineBreakRegex = ref('');
+const splitEveryCharacterCounts = ref(0);
+
+// Tracks the index of the currently active highlight.
+const currentActiveIndex = ref(0);
+// Tracks the total number of matches found to cycle through them.
+const totalMatches = ref(0);
+
+const highlightedText = computed(() => {
+  const findWhatValue = findWhat.value.trim();
+  let strValue = str.value;
+
+  if (!strValue) {
+    return strValue;
+  }
+
+  if (!keepLineBreaks.value) {
+    strValue = strValue.replace(/\r?\n/g, '');
+  }
+
+  if (addLineBreakRegex.value) {
+    const addLBRegex = new RegExp(addLineBreakRegex.value, matchCase.value ? 'g' : 'gi');
+    if (addLineBreakPlace.value === 'before') {
+      strValue = strValue.replace(addLBRegex, m => `\n${m}`);
+    }
+    else if (addLineBreakPlace.value === 'after') {
+      strValue = strValue.replace(addLBRegex, m => `${m}\n`);
+    }
+    else if (addLineBreakPlace.value === 'place') {
+      strValue = strValue.replace(addLBRegex, '\n');
+    }
+  }
+  if (splitEveryCharacterCounts.value) {
+    strValue = strValue.replace(new RegExp(`[^\n]{${splitEveryCharacterCounts.value}}`, 'g'), m => `${m}\n`);
+  }
+
+  if (!findWhatValue) {
+    return strValue;
+  }
+
+  const regex = new RegExp(findWhatValue, matchCase.value ? 'g' : 'gi');
+  let index = 0;
+  const newStr = strValue.replace(regex, (match) => {
+    index++;
+    return `<span class="${match === findWhatValue ? 'highlight' : 'outline'}">${match}</span>`;
+  });
+
+  totalMatches.value = index;
+  // Reset to -1 to ensure the first match is highlighted upon next search
+  currentActiveIndex.value = -1;
+  return newStr;
+});
+
+// Automatically highlight the first occurrence after any change
+watchEffect(async () => {
+  if (highlightedText.value) {
+    await nextTick();
+    updateHighlighting();
+  }
+});
+
+watch(matchCase, () => {
+  // Use nextTick to wait for the DOM to update after highlightedText re-reaction
+  nextTick().then(() => {
+    const matches = document.querySelectorAll('.outline, .highlight');
+    if (matches.length === 0) {
+      // No matches after change, reset
+      currentActiveIndex.value = -1;
+      totalMatches.value = 0;
+    }
+    else if (matches.length <= currentActiveIndex.value || currentActiveIndex.value === -1) {
+      // Current selection is out of range or reset, select the first match
+      currentActiveIndex.value = 0;
+      updateHighlighting(); // Ensure correct highlighting
+    }
+    else {
+      // The current selection is still valid, ensure it's highlighted correctly
+      updateHighlighting(); // This might need adjustment to not advance the index
+    }
+  });
+});
+
+// Function to add active highlighting
+function updateHighlighting() {
+  currentActiveIndex.value = (currentActiveIndex.value + 1) % totalMatches.value;
+  const matches = document.querySelectorAll('.outline, .highlight');
+  matches.forEach((match, index) => {
+    match.className = index === currentActiveIndex.value ? 'highlight' : 'outline';
+  });
+}
+
+function replaceSelected() {
+  const matches = document.querySelectorAll('.outline, .highlight');
+  if (matches.length > currentActiveIndex.value) {
+    const selectedMatch = matches[currentActiveIndex.value];
+    if (selectedMatch) {
+      const newText = replaceWith.value;
+      selectedMatch.textContent = newText;
+      selectedMatch.classList.remove('highlight');
+      currentActiveIndex.value--;
+      totalMatches.value--;
+    }
+  }
+  updateHighlighting();
+}
+
+function replaceAll() {
+  const matches = document.querySelectorAll('.outline, .highlight');
+  matches.forEach((match) => {
+    match.textContent = replaceWith.value;
+    match.classList.remove('highlight');
+    match.classList.remove('outline');
+  });
+  currentActiveIndex.value = -1;
+  totalMatches.value = matches.length;
+}
+
+function findNext() {
+  updateHighlighting();
+}
+
+const { copy } = useCopy({ source: highlightedText });
+</script>
+
+<template>
+  <div>
+    <c-input-text v-model:value="str" raw-text placeholder="Enter text here..." label="Text to search and replace:" clearable multiline rows="10" />
+
+    <div mt-4 w-full flex gap-10px>
+      <div flex-1>
+        <div>Find what:</div>
+        <c-input-text v-model:value="findWhat" placeholder="Search regex" @keyup.enter="findNext()" />
+      </div>
+      <div flex-1>
+        <div>Replace with:</div>
+        <c-input-text v-model:value="replaceWith" placeholder="(can include $1 or $<groupName>)" @keyup.enter="replaceSelected()" />
+      </div>
+    </div>
+
+    <div mt-4 w-full flex gap-10px>
+      <div flex-2 flex items-baseline gap-10px>
+        <c-button @click="findNext()">
+          <label>Find Next</label>
+        </c-button>
+        <n-checkbox v-model:checked="matchCase">
+          <label>Match case</label>
+        </n-checkbox>
+        <n-checkbox v-model:checked="keepLineBreaks">
+          <label>Keep linebreaks</label>
+        </n-checkbox>
+      </div>
+      <div flex flex-1 justify-end gap-10px>
+        <c-button @click="replaceSelected()">
+          <label>Replace</label>
+        </c-button>
+        <c-button @click="replaceAll()">
+          <label>Replace All</label>
+        </c-button>
+      </div>
+    </div>
+
+    <n-divider />
+
+    <div mt-4 w-full flex items-baseline gap-10px>
+      <c-select
+        v-model:value="addLineBreakPlace"
+        :options="[{ value: 'before', label: 'Add linebreak before' }, { value: 'after', label: 'Add linebreak after' }, { value: 'place', label: 'Add linebreak in place of' }]"
+      />
+
+      <c-input-text
+        v-model:value="addLineBreakRegex"
+        placeholder="Split text regex"
+      />
+    </div>
+    <div mt-4 w-full flex items-baseline gap-10px>
+      <n-form-item label="Split every characters:" label-placement="left">
+        <n-input-number v-model:value="splitEveryCharacterCounts" :min="0" />
+      </n-form-item>
+    </div>
+    <c-card v-if="highlightedText" mt-60px max-w-600px flex items-center gap-5px font-mono>
+      <div flex-1 break-anywhere text-wrap style="white-space: pre" v-html="highlightedText" />
+
+      <c-button @click="copy()">
+        <icon-mdi:content-copy />
+      </c-button>
+    </c-card>
+  </div>
+</template>
+
+<style lang="less">
+.highlight {
+  background-color: #ff0;
+  color: black;
+}
+</style>