diff --git a/README.md b/README.md
index b1114c5..097490c 100644
--- a/README.md
+++ b/README.md
@@ -19,16 +19,24 @@ bun run dev
 
 ## Tool List
 **General:**
+* % of number
+* Copy invisible character
 * humans.txt generator
 * Table to Markdown table
 * Table to Mediawiki table
 
 **Docker:**
+* Convert run compose
 * Rename volume
 
 **Go:**
 * JSON to Go struct
 
+**Generators:**
+* Dummy image
+* IBAN generator
+* QR code
+
 **JSON:**
 * JSON formatter
 * JSON minifier
@@ -55,16 +63,14 @@ bun run dev
 * URL query viewer
 
 **Unix:**
-* .htaccess generator
 * Explain crontab
 * File base64 encode/decode
+* .htaccess generator
 * Sed generator
 * Unix timestamp
 
-**Generators:**
-* Dummy image
-* IBAN generator
-* QR code
+**YAML:**
+* YAML formatter
 
 ## Debug
 
diff --git a/src/views/strings/Hash.vue b/src/views/strings/Hash.vue
new file mode 100644
index 0000000..a59a1fb
--- /dev/null
+++ b/src/views/strings/Hash.vue
@@ -0,0 +1,121 @@
+<template>
+  <h2 class="tool-title">Hash</h2>
+
+  <hr class="mt-5 mb-5" />
+
+  <div class="input-group">
+    <label for="data">Data</label>
+    <textarea id="data" v-model="toolData.data" v-on:change="result"></textarea>
+  </div>
+
+  <div class="input-group mt-3">
+    <label for="algorithm">Algorithm</label>
+    <div>
+      <select id="algorithm" v-model="toolData.algorithm" v-on:change="result">
+        <option value="md5">MD5</option>
+        <option value="sha1">SHA-1</option>
+        <option value="sha256">SHA-256</option>
+        <option value="sha512">SHA-512</option>
+      </select>
+    </div>
+  </div>
+
+  <div class="input-group mt-3">
+    <label for="outputFormat">Output format</label>
+    <div>
+      <select id="outputFormat" v-model="toolData.outputFormat" v-on:change="result">
+        <option value="hex">Hex</option>
+        <option value="binary">Binary</option>
+        <option value="base64">Base64</option>
+        <option value="base64url">Base64 URL-safe</option>
+      </select>
+    </div>
+  </div>
+
+  <hr class="mt-5 mb-5" />
+
+  <div class="input-group">
+    <label for="result">Result</label>
+    <input
+      id="result"
+      class="input"
+      :value="toolResult"
+      type="text"
+      readonly
+    >
+  </div>
+</template>
+
+<script>
+export default {
+  data() {
+    return {
+      toolData: {
+        data: '',
+        algorithm: 'sha256',
+        outputFormat: 'hex',
+      },
+      toolResult: '',
+    };
+  },
+  methods: {
+    async result() {
+      const encoder = new TextEncoder();
+      const dataBuffer = encoder.encode(this.toolData.data);
+
+      let hashBuffer;
+      switch (this.toolData.algorithm) {
+        case 'md5':
+          hashBuffer = await crypto.subtle.digest('MD5', dataBuffer);
+          break;
+        case 'sha1':
+          hashBuffer = await window.crypto.subtle.digest('SHA-1', dataBuffer);
+          break;
+        case 'sha256':
+          hashBuffer = await window.crypto.subtle.digest('SHA-256', dataBuffer);
+          break;
+        case 'sha512':
+          hashBuffer = await window.crypto.subtle.digest('SHA-512', dataBuffer);
+          break;
+        default:
+          throw new Error(`Unsupported algorithm: ${this.toolData.algorithm}`);
+      }
+
+      let hash;
+      switch (this.toolData.outputFormat) {
+        case 'hex':
+          hash = this.arrayBufferToHex(hashBuffer);
+          break;
+        case 'binary':
+          hash = this.arrayBufferToBinary(hashBuffer);
+          break;
+        case 'base64':
+          hash = btoa(String.fromCharCode(...new Uint8Array(hashBuffer)));
+          break;
+        case 'base64url':
+          hash = btoa(String.fromCharCode(...new Uint8Array(hashBuffer)))
+            .replace(/\+/g, '-')
+            .replace(/\//g, '_')
+            .replace(/=+$/, '');
+          break;
+        default:
+          throw new Error(`Unsupported output format: ${this.toolData.outputFormat}`);
+      }
+
+      this.toolResult = hash;
+    },
+    arrayBufferToHex(buffer) {
+      return [...new Uint8Array(buffer)]
+        .map((b) => b.toString(16).padStart(2, '0'))
+        .join('');
+    },
+    arrayBufferToBinary(buffer) {
+      return [...new Uint8Array(buffer)]
+        .map((b) => b.toString(2).padStart(8, '0'))
+        .join('');
+    },
+  },
+};
+</script>
+
+<style lang="scss"></style>
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