diff --git a/components.d.ts b/components.d.ts
index 3e65c3cc..c0279130 100644
--- a/components.d.ts
+++ b/components.d.ts
@@ -82,6 +82,7 @@ declare module '@vue/runtime-core' {
     FormatTransformer: typeof import('./src/components/FormatTransformer.vue')['default']
     GitMemo: typeof import('./src/tools/git-memo/git-memo.vue')['default']
     'GitMemo.content': typeof import('./src/tools/git-memo/git-memo.content.md')['default']
+    GzipDecompressor: typeof import('./src/tools/gzip-decompressor/gzip-decompressor.vue')['default']
     HashText: typeof import('./src/tools/hash-text/hash-text.vue')['default']
     HmacGenerator: typeof import('./src/tools/hmac-generator/hmac-generator.vue')['default']
     'Home.page': typeof import('./src/pages/Home.page.vue')['default']
@@ -91,6 +92,7 @@ declare module '@vue/runtime-core' {
     IbanValidatorAndParser: typeof import('./src/tools/iban-validator-and-parser/iban-validator-and-parser.vue')['default']
     'IconMdi:brushVariant': typeof import('~icons/mdi/brush-variant')['default']
     'IconMdi:kettleSteamOutline': typeof import('~icons/mdi/kettle-steam-outline')['default']
+    IconMdiArrowRightBottom: typeof import('~icons/mdi/arrow-right-bottom')['default']
     IconMdiChevronDown: typeof import('~icons/mdi/chevron-down')['default']
     IconMdiChevronRight: typeof import('~icons/mdi/chevron-right')['default']
     IconMdiClose: typeof import('~icons/mdi/close')['default']
@@ -98,6 +100,7 @@ declare module '@vue/runtime-core' {
     IconMdiEye: typeof import('~icons/mdi/eye')['default']
     IconMdiEyeOff: typeof import('~icons/mdi/eye-off')['default']
     IconMdiHeart: typeof import('~icons/mdi/heart')['default']
+    IconMdiRefresh: typeof import('~icons/mdi/refresh')['default']
     IconMdiSearch: typeof import('~icons/mdi/search')['default']
     IconMdiTranslate: typeof import('~icons/mdi/translate')['default']
     IconMdiTriangleDown: typeof import('~icons/mdi/triangle-down')['default']
@@ -129,19 +132,36 @@ declare module '@vue/runtime-core' {
     MenuLayout: typeof import('./src/components/MenuLayout.vue')['default']
     MetaTagGenerator: typeof import('./src/tools/meta-tag-generator/meta-tag-generator.vue')['default']
     MimeTypes: typeof import('./src/tools/mime-types/mime-types.vue')['default']
+    NAlert: typeof import('naive-ui')['NAlert']
     NavbarButtons: typeof import('./src/components/NavbarButtons.vue')['default']
     NCheckbox: typeof import('naive-ui')['NCheckbox']
+    NCode: typeof import('naive-ui')['NCode']
     NCollapseTransition: typeof import('naive-ui')['NCollapseTransition']
+    NColorPicker: typeof import('naive-ui')['NColorPicker']
     NConfigProvider: typeof import('naive-ui')['NConfigProvider']
     NDivider: typeof import('naive-ui')['NDivider']
+    NDynamicInput: typeof import('naive-ui')['NDynamicInput']
     NEllipsis: typeof import('naive-ui')['NEllipsis']
+    NForm: typeof import('naive-ui')['NForm']
+    NFormItem: typeof import('naive-ui')['NFormItem']
+    NGi: typeof import('naive-ui')['NGi']
+    NGrid: typeof import('naive-ui')['NGrid']
     NH1: typeof import('naive-ui')['NH1']
     NH3: typeof import('naive-ui')['NH3']
     NIcon: typeof import('naive-ui')['NIcon']
+    NImage: typeof import('naive-ui')['NImage']
+    NInputGroup: typeof import('naive-ui')['NInputGroup']
+    NInputGroupLabel: typeof import('naive-ui')['NInputGroupLabel']
+    NInputNumber: typeof import('naive-ui')['NInputNumber']
     NLayout: typeof import('naive-ui')['NLayout']
     NLayoutSider: typeof import('naive-ui')['NLayoutSider']
     NMenu: typeof import('naive-ui')['NMenu']
+    NProgress: typeof import('naive-ui')['NProgress']
+    NScrollbar: typeof import('naive-ui')['NScrollbar']
+    NSlider: typeof import('naive-ui')['NSlider']
     NSpace: typeof import('naive-ui')['NSpace']
+    NStatistic: typeof import('naive-ui')['NStatistic']
+    NSwitch: typeof import('naive-ui')['NSwitch']
     NTable: typeof import('naive-ui')['NTable']
     NumeronymGenerator: typeof import('./src/tools/numeronym-generator/numeronym-generator.vue')['default']
     OtpCodeGeneratorAndValidator: typeof import('./src/tools/otp-code-generator-and-validator/otp-code-generator-and-validator.vue')['default']
diff --git a/src/tools/gzip-decompressor/__test__/gzip-decompressor.e2e.spec.ts b/src/tools/gzip-decompressor/__test__/gzip-decompressor.e2e.spec.ts
new file mode 100644
index 00000000..37f482f7
--- /dev/null
+++ b/src/tools/gzip-decompressor/__test__/gzip-decompressor.e2e.spec.ts
@@ -0,0 +1,31 @@
+import { expect, test } from '@playwright/test';
+
+const validGzipBase64 = 'H4sIAAAAAAAAA/NIzcnJVwjPL8pJAQBWsRdKCwAAAA==';
+
+test.describe('Tool - Gzip decompressor', () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto('/gzip-decompressor');
+  });
+
+  test('Has correct title', async ({ page }) => {
+    await expect(page).toHaveTitle('Gzip decompressor - IT Tools');
+  });
+
+  test('Decompresses valid base64 string and shows output', async ({ page }) => {
+    const input = page.getByLabel('GZipped User Input');
+    const output = page.getByLabel('Decompressed Output');
+
+    await input.fill(validGzipBase64);
+
+    await expect(output).toHaveValue('Hello World');
+  });
+
+  test('Shows error for invalid input', async ({ page }) => {
+    const input = page.getByLabel('GZipped User Input');
+
+    await input.fill('invalid-base64');
+
+    const alert = page.getByRole('alert');
+    await expect(alert).toContainText('Decompression failed');
+  });
+});
diff --git a/src/tools/gzip-decompressor/__test__/gzip-decompressor.service.test.ts b/src/tools/gzip-decompressor/__test__/gzip-decompressor.service.test.ts
new file mode 100644
index 00000000..eb7ce15c
--- /dev/null
+++ b/src/tools/gzip-decompressor/__test__/gzip-decompressor.service.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, it } from 'vitest';
+import { decompress } from '../gzip-decompressor.service';
+
+const validGzipBase64 = 'H4sIAAAAAAAAA/NIzcnJVwjPL8pJAQBWsRdKCwAAAA==';
+
+describe('decompress', () => {
+  it('correctly decompresses valid gzip base64 string', async () => {
+    const result = await decompress(validGzipBase64);
+    expect(result).toContain('Hello World');
+  });
+
+  it('throws error on invalid base64 string', async () => {
+    await expect(() =>
+      decompress('not-a-valid-gzip-base64'),
+    ).rejects.toThrow();
+  });
+});
diff --git a/src/tools/gzip-decompressor/gzip-decompressor.service.ts b/src/tools/gzip-decompressor/gzip-decompressor.service.ts
new file mode 100644
index 00000000..9ea44390
--- /dev/null
+++ b/src/tools/gzip-decompressor/gzip-decompressor.service.ts
@@ -0,0 +1,8 @@
+export async function decompress(url: string) {
+  const ds = new DecompressionStream('gzip');
+  const response = await fetch(`data:application/octet-stream;base64,${url}`);
+  const blob_in = await response.blob();
+  const stream_in = blob_in.stream().pipeThrough(ds);
+  const blob_out = await new Response(stream_in).blob();
+  return await blob_out.text();
+}
diff --git a/src/tools/gzip-decompressor/gzip-decompressor.vue b/src/tools/gzip-decompressor/gzip-decompressor.vue
new file mode 100644
index 00000000..beafc33a
--- /dev/null
+++ b/src/tools/gzip-decompressor/gzip-decompressor.vue
@@ -0,0 +1,73 @@
+<script lang="ts" setup>
+import { ref } from 'vue';
+import { decompress } from './gzip-decompressor.service';
+
+const userInput = ref('');
+const decompressedOutput = ref('');
+const error = ref<string | null>(null);
+
+const inputKey = ref(0);
+const outputKey = ref(0);
+
+function clearAll() {
+  userInput.value = '';
+  decompressedOutput.value = '';
+  error.value = null;
+
+  inputKey.value++;
+  outputKey.value++;
+}
+
+watch(userInput, async (val) => {
+  error.value = null;
+  decompressedOutput.value = '';
+
+  if (!val.trim()) {
+    return;
+  }
+
+  try {
+    decompressedOutput.value = await decompress(val);
+  }
+  catch (err: any) {
+    error.value = 'Decompression failed. Please ensure the input is valid GZip.';
+  }
+});
+</script>
+
+<template>
+  <c-card title="GZip Decompressor">
+    <div class="mb-2">
+      GZipped User Input
+    </div>
+    <c-input-text
+      :key="inputKey"
+      v-model:value="userInput"
+      placeholder="Paste your GZipped string here..."
+      rows="6"
+      class="mb-6"
+      multiline autosize raw-text monospace max-h-64 overflow-y-auto
+    />
+
+    <c-alert v-if="error" type="error" title="Error while decompressing" class="mt-4">
+      {{ error }}
+    </c-alert>
+
+    <div class="mb-2 mt-2">
+      Decompressed Output
+    </div>
+    <c-input-text
+      :key="outputKey"
+      :value="decompressedOutput"
+      placeholder=""
+      rows="6"
+      readonly multiline autosize monospace max-h-128 overflow-y-auto
+    />
+  </c-card>
+
+  <div class="mt-2">
+    <c-button @click="clearAll">
+      Clear
+    </c-button>
+  </div>
+</template>
diff --git a/src/tools/gzip-decompressor/index.ts b/src/tools/gzip-decompressor/index.ts
new file mode 100644
index 00000000..76b8a0e9
--- /dev/null
+++ b/src/tools/gzip-decompressor/index.ts
@@ -0,0 +1,12 @@
+import { ArrowsShuffle } from '@vicons/tabler';
+import { defineTool } from '../tool';
+
+export const tool = defineTool({
+  name: 'Gzip decompressor',
+  path: '/gzip-decompressor',
+  description: 'Decompress GZip-encoded strings',
+  keywords: ['gzip', 'decompressor'],
+  component: () => import('./gzip-decompressor.vue'),
+  icon: ArrowsShuffle,
+  createdAt: new Date('2025-06-13'),
+});
diff --git a/src/tools/index.ts b/src/tools/index.ts
index 388cfaf4..3b24024e 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 gzipDecompressor } from './gzip-decompressor';
 import { tool as emailNormalizer } from './email-normalizer';
 
 import { tool as asciiTextDrawer } from './ascii-text-drawer';
@@ -116,6 +117,7 @@ export const toolsByCategory: ToolCategory[] = [
       xmlToJson,
       jsonToXml,
       markdownToHtml,
+      gzipDecompressor,
     ],
   },
   {