diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 2d51ac0..5c717ca 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -7,9 +7,6 @@
       <option name="GROUP_STDLIB_IMPORTS" value="true" />
       <option name="LOCAL_PACKAGE_PREFIXES" />
     </GoCodeStyleSettings>
-    <HTMLCodeStyleSettings>
-      <option name="HTML_ALIGN_TEXT" value="true" />
-    </HTMLCodeStyleSettings>
     <JSCodeStyleSettings version="0">
       <option name="FORCE_SEMICOLON_STYLE" value="true" />
       <option name="USE_DOUBLE_QUOTES" value="false" />
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 876a1b2..e6ce300 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -3,6 +3,7 @@
     <option name="myName" value="Project Default" />
     <inspection_tool class="DuplicatedCode" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="ES6MissingAwait" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
+    <inspection_tool class="HtmlFormInputWithoutLabel" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="SpellCheckingInspection" enabled="true" level="TYPO" enabled_by_default="true">
       <option name="processCode" value="false" />
       <option name="processLiterals" value="false" />
diff --git a/README.md b/README.md
index 5092b44..6db1792 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,7 @@ Add `?qr=1` to enable QR code generation for paste link.
 |`read-limit`|The maximum access count|
 |`qrcode`|Toggle QR code generation|
 |`paste-type`|Set paste type|
+|`title`|File's title|
 
 #### For raw request,
 
@@ -129,6 +130,7 @@ Add `?qr=1` to enable QR code generation for paste link.
 |`x-pass`|Paste's password|
 |`x-read-limit`|The maximum access count|
 |`x-paste-type`|Set paste type|
+|`x-qr`|Toggle QR code generation|
 
 The request body contains the upload content.
 
@@ -139,7 +141,7 @@ The request body contains the upload content.
 |`paste`|Normal paste content|
 |`link`|URL link to be redirected|
 
-### GET /\<uuid\>/\<option\> (Not implemented)
+### GET /\<uuid\>/\<option\>
 
 Fetch the paste (code) in rendered HTML with syntax highlighting  
 Add `?qr=1` to enable QR code generation for paste link.  
diff --git a/paste.html b/paste.html
index 3e30194..563d0d0 100644
--- a/paste.html
+++ b/paste.html
@@ -34,51 +34,75 @@
   The source code is available in my GitHub repository <a href="https://github.com/rikkaneko/paste">[here]</a>.<br>
   This webpage is designed for upload files only.
   For other operations like changing paste settings and deleting paste, please make use of the
-  <a href="https://pb.nekoul.com/api">API call</a> with <a href="https://wiki.archlinux.org/title/CURL">curl</a>.
+  <a href="https://github.com/rikkaneko/paste#api-specification">API call</a> with <a
+    href="https://wiki.archlinux.org/title/CURL">curl</a>.
 </p>
 
 <form id="upload_file_form" action="https://pb.nekoul.com" method="POST" enctype=multipart/form-data>
   <div>
     <div>
       <h4>Upload file</h4>
-      <input id="upload_file" type="file" name="u">
+      <input id="upload_file" type="file" name="u" style="font-size: 14px">
     </div>
     <div>
       <h4>Upload text</h4>
-      <textarea id="text_input" style="width: 30%; max-width: 100%; " rows="5" cols="50"
-                name="u" placeholder="Paste text or URL link here..." spellcheck="false"></textarea>
-    </div>
-    <div>
-      <h4>Settings</h4>
-      <label for="pass_input">Password: </label>
-      <input id="pass_input" type="password" name="pass" style="margin-left: 7px;">
-      <input id="show_pass_button" type="checkbox">
-      <label for="show_pass_button">Show</label>
-    </div>
-    <div style="margin-top: 1px;">
-      <label for="read_limit_input">Read limit: </label>
-      <input id="read_limit_input" type="number" name="read-limit" min="1" style="margin-left: 2px; width: 3em">
-    </div>
-    <div style="margin-top: 2px;">
-      <input id="show_qr_checkbox" type="checkbox" name="qrcode" checked>
-      <label for="show_qr_checkbox">Show QR code on sumbitted</label>
-    </div>
-    <div>
-      <input id="gen_link" type="checkbox" name="paste-type" value="link">
-      <label for="gen_link">Generate as shorten URL link</label>
-    </div>
-    <br>
-    <div>
-      <input id="reset_button" type="reset" value="Reset">
-      <input id="sumbit_form_button" type="submit" value="Sumbit"> (<span id="file_stats">0 bytes</span>)
+      <div>
+        <textarea id="text_input"
+                  style="width: 50%; max-width: 80%; font-size: 14px; margin-top: 2px"
+                  rows="10" name="u" spellcheck="false"></textarea><br>
+        (<span id="text_length">0 characters</span>)
+      </div>
+  
     </div>
+    <h4>Settings</h4>
+    <table style="padding-bottom: 2px;">
+      <tr>
+        <td>
+          <label for="title_input">Title: </label>
+        </td>
+        <td>
+          <input id="title_input" type="text" name="title" spellcheck="false">
+        </td>
+      </tr>
+      <tr>
+        <td>
+          <label for="pass_input">Password: </label>
+        </td>
+        <td>
+          <input id="pass_input" type="password" name="pass">
+          <input id="show_pass_button" type="checkbox">
+          <label for="show_pass_button">Show</label>
+        </td>
+      </tr>
+      <tr>
+        <td>
+          <label for="read_limit_input">Read limit: </label>
+        </td>
+        <td>
+          <input id="read_limit_input" type="number" name="read-limit" min="1" style="width: 3em">
+        </td>
+      </tr>
+    </table>
+    <input id="show_qr_checkbox" type="checkbox" name="qrcode" checked>
+    <label for="show_qr_checkbox">Show QR code on sumbitted</label>
+  </div>
+  <div>
+    <input id="gen_link" type="checkbox" name="paste-type" value="link">
+    <label for="gen_link">Generate as shorten URL link</label>
+  </div>
+  <br>
+  <div>
+    <input id="reset_button" type="reset" value="Reset" style="font-size: 14px">
+    <input id="sumbit_form_button" type="submit" value="Sumbit" style="font-size: 14px"> (<span
+      id="file_stats">0 bytes</span>)
+  </div>
   </div>
 </form>
 
 <script>
   function update_textarea() {
-    this.style.height = 'auto';
-    this.style.height = this.scrollHeight + 'px';
+    const length = document.getElementById('text_length');
+    length.textContent = `${this.value.length} characters`;
   }
 
   function update_file_status() {
@@ -111,8 +135,8 @@
     for (let i = 0; i < elements.length; i++) {
       elements[i].disabled = false;
     }
-    let size = document.getElementById('file_size');
-    size.innerHTML = '0 bytes';
+    let size = document.getElementById('file_stats');
+    size.textContent = '0 bytes';
   }
 
   function handle_submit_form(event) {
@@ -144,7 +168,7 @@
   document.getElementById('upload_file_form').addEventListener('submit', handle_submit_form, false);
 </script>
 <br>
-<a href="https://nekoul.com">[Homepage]</a><a href="https://pb.nekoul.com/api">[API]</a>
+<a href="https://nekoul.com">[Homepage]</a><a href="https://github.com/rikkaneko/paste#api-specification">[API]</a>
 <p>&copy; 2022 rikkaneko</p>
 </body>
 </html>
diff --git a/src/index.ts b/src/index.ts
index 68b22af..b40fb17 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -34,54 +34,6 @@ export interface Env {
   ENDPOINT: string;
 }
 
-const API_SPEC_TEXT =
-    `Paste service https://${SERVICE_URL}
-
-[API Specification]
-GET /                   Fetch the Web frontpage for uploading text/file [x]
-GET /api                Fetch API specification
-
-# Authentication support HTTP Basic access authentication (RFC 7617) or the x-pass header
-GET /<uuid>             Fetch the paste by uuid [x]
-
-# Currently, only the following options is supported for <option>,
-# "settings": Fetch the paste information, add \`?qr=1\` to enable QR code generation for paste link.
-# "download": Download paste as attachment
-# "raw": Display paste as plain text
-GET /<uuid>/<option>      Fetch the paste (code) in rendered HTML with syntax highlighting [ ]
-
-# Only support multipart/form-data and raw request
-# For form-data, u=<upload-data>, both title and content-type is deduced from the u
-# Add \`?qr=1\` or qrcode=(on|true) using form-data to enable QR code generation for paste link.
-# The following key is supported for both HTTP form request and headers, add the prefix "x-" for header keys in raw request
-# title: File title, i.e. main.py
-# content-type: The media type (MIME) of the data and encoding, i.e., text/plain; charset=UTF-8;
-# pass: Paste password
-# read-limit: Limit access times to paste to <read-limit>
-# paste-type: Set paste type (Available: paste, link)
-POST /                  Create new paste [x]
-
-DELETE /<uuid>          Delete paste by uuid [x]
-POST /<uuid>/settings   Update paste setting, i.e., passcode and valid time [ ]
-
-# For paste with password protected, all API call related to the pastes requires additional x-pass header
-
-* uuid: [A-z0-9]{${UUID_LENGTH}}
-
-Supported Features
-* Password protection
-* Limit access times
-* Generate QR code for paste link
-
-[ ] indicated not implemented
-
-Limitation
-* Max. 10MB file size upload
-* Paste will be kept for 28 days only by default
-
-Last update on 11 Sept.
-`;
-
 const gen_id = customAlphabet(
     '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', UUID_LENGTH);
 
@@ -115,14 +67,6 @@ export default {
       });
     }
 
-    if (path === '/api' && method == 'GET') {
-      return new Response(API_SPEC_TEXT, {
-        headers: {
-          'cache-control': 'public, max-age=172800',
-        },
-      });
-    }
-
     if (path === '/') {
       switch (method) {
           // Fetch the HTML for uploading text/file
@@ -159,6 +103,7 @@ export default {
             const formdata = await request.formData();
             const data = formdata.get('u');
             const type = formdata.get('paste-type');
+            const file_title = formdata.get('title');
             if (data === null) {
               return new Response('Invalid request.\n', {
                 status: 422,
@@ -175,6 +120,7 @@ export default {
               mime_type = 'text/plain; charset=UTF-8;';
             }
 
+            if (typeof file_title === 'string') title = file_title;
             if (typeof type === 'string') paste_type = type;
 
             // Set password
@@ -206,16 +152,15 @@ export default {
             mime_type = headers.get('x-content-type') || undefined;
             password = headers.get('x-pass') || undefined;
             paste_type = headers.get('x-paste-type') || undefined;
-            const count = headers.get('x-read-limit') || undefined;
-            if (typeof count === 'string') {
-              const n = parseInt(count);
-              if (isNaN(n) || n <= 0) {
-                return new Response('x-read-limit must be a positive integer.\n', {
-                  status: 422,
-                });
-              }
-              read_limit = n;
+            need_qrcode = headers.get('x-qr') === '1';
+            const count = headers.get('x-read-limit') || '';
+            const n = parseInt(count);
+            if (isNaN(n) || n <= 0) {
+              return new Response('x-read-limit must be a positive integer.\n', {
+                status: 422,
+              });
             }
+            read_limit = n;
             buffer = await request.arrayBuffer();
           }
 
@@ -242,6 +187,12 @@ export default {
               });
           }
 
+          // Check file title rules
+          if (title && /^.*[\\\/]/.test(title))
+            return new Response('Invalid title', {
+              status: 422,
+            });
+
           // Check password rules
           if (password && !check_password_rules(password)) {
             return new Response('Invalid password. ' +
@@ -321,7 +272,7 @@ export default {
       if (option === 'settings') {
         switch (method) {
           case 'GET': {
-            const need_qrcode = searchParams.get('qr') === '1';
+            const need_qrcode = searchParams.get('qr') === '1' || headers.get('x-qr') === '1';
             return await get_paste_info(uuid, descriptor, env, is_browser, need_qrcode);
           }
 
@@ -518,11 +469,11 @@ async function get_paste_info(uuid: string, descriptor: PasteIndexEntry, env: En
   let content = dedent`
     id: ${uuid}
     link: ${link}
+    type: ${descriptor.type}
     title: ${descriptor.title?.trim() || '-'}
     mime-type: ${descriptor.mime_type ?? '-'}
     size: ${descriptor.size} bytes (${to_human_readable_size(descriptor.size)})
     password: ${(!!descriptor.password)}
-    editable: ${descriptor.editable ? descriptor.editable : true}
     remaining read count: ${descriptor.read_count_remain !== undefined ?
       descriptor.read_count_remain ? descriptor.read_count_remain : `0 (expired)` : '-'}
     created at ${created.toISOString()}
@@ -623,7 +574,7 @@ interface PasteIndexEntry {
   last_modified: number,
   size: number,
   password?: string,
-  editable?: boolean, // Default: True
+  editable?: boolean, // Default: False (unsupported)
   read_count_remain?: number
   type?: string;
 }
\ No newline at end of file