diff --git a/src/parser/copycode.ts b/src/parser/copycode.ts
new file mode 100644
index 0000000..cb611b9
--- /dev/null
+++ b/src/parser/copycode.ts
@@ -0,0 +1,30 @@
+import MarkdownIt from 'markdown-it';
+import octicons from '@primer/octicons';
+
+const copyIcon = octicons['copy'].toSVG({ class: 'icon-copy' });
+const checkIcon = octicons['check'].toSVG({ class: 'icon-check' });
+const xIcon = octicons['x'].toSVG({ class: 'icon-x' });
+
+export default function copycode(md: MarkdownIt) {
+    const defaultRender = md.renderer.rules.fence!;
+    md.renderer.rules.fence = (tokens, idx, options, env, self) => {
+        const renderedPreBlock = defaultRender(tokens, idx, options, env, self);
+        const content = tokens[idx].content;
+        return `
+<div class="pre-wrapper" style="position: relative">
+    ${renderedPreBlock}
+    <div class="copy-wrapper">
+        <button class="copy-button" data-clipboard-text="${content.replaceAll('"', '&quot;')}">
+            ${copyIcon}
+        </button>
+        <div class="copy-success">
+            ${checkIcon}
+        </div>
+        <div class="copy-fail">
+            ${xIcon}
+        </div>
+    </div>
+</div>
+`;
+    };
+}
diff --git a/src/parser/markdown.ts b/src/parser/markdown.ts
index 9a0fe9d..ffdadeb 100644
--- a/src/parser/markdown.ts
+++ b/src/parser/markdown.ts
@@ -1,5 +1,6 @@
 import MarkdownIt from 'markdown-it';
 import anchor from 'markdown-it-anchor';
+import copycode from './copycode.js';
 import frontMatter from 'markdown-it-front-matter';
 import highlight from './highlight.js';
 import graphviz from './dot.js';
@@ -68,6 +69,7 @@ mdit.use(anchor, {
         placement: 'before',
     }),
 });
+mdit.use(copycode);
 mdit.use(graphviz);
 mdit.use(githubAlerts);
 mdit.use(mermaid);
diff --git a/src/routes/viewer.ts b/src/routes/viewer.ts
index b53e80a..ec569c4 100644
--- a/src/routes/viewer.ts
+++ b/src/routes/viewer.ts
@@ -88,6 +88,8 @@ router.get(/.*/, async (req: Request, res: Response) => {
             </script>
             ${config.scripts ? `<script type="text/javascript">${config.scripts}</script>` : ''}
             <script type="module" src="/static/client.mjs"></script>
+            <script type="text/javascript" src="/static/copycode/clipboard.min.js"></script>
+            <script type="text/javascript" src="/static/copycode/client.js"></script>
         </html>
     `);
 });
diff --git a/static/colors.css b/static/colors.css
index d3bf14c..a101441 100644
--- a/static/colors.css
+++ b/static/colors.css
@@ -19,6 +19,13 @@
     --icon-file: var(--text-secondary);
     --icon-back: var(--text-secondary);
 
+    --copy-button-fg: #aaa;
+    --copy-button-bg: #333;
+    --copy-success-fg: #ddffcc;
+    --copy-success-bg: #5c993d;
+    --copy-fail-fg: #ffcccc;
+    --copy-fail-bg: #993d3d;
+
     --syntax-text: var(--text-primary);
     --syntax-keyword: #aed7ff;
     --syntax-entity: #aeafff;
@@ -69,6 +76,13 @@
         --icon-file: #636c76;
         --icon-back: var(--text-secondary);
 
+        --copy-button-fg: #1f2328;
+        --copy-button-bg: #e7e9eb;
+        --copy-success-fg: #154000;
+        --copy-success-bg: #c7e6b8;
+        --copy-fail-fg: #400000;
+        --copy-fail-bg: #e6b8b8;
+
         /* source for light mode syntax theme:
          * https://github.com/highlightjs/highlight.js/blob/main/src/styles/github.css
          * */
diff --git a/static/copycode/client.js b/static/copycode/client.js
new file mode 100644
index 0000000..bb0080f
--- /dev/null
+++ b/static/copycode/client.js
@@ -0,0 +1,26 @@
+document.querySelectorAll('.copy-success, .copy-fail').forEach((element) => {
+    element.style.display = 'none';
+});
+
+const Notify = {
+    Success: '.copy-success',
+    Fail: '.copy-fail',
+};
+
+let clipboard = new ClipboardJS('.copy-button');
+
+clipboard.on('success', function (e) {
+    showNotification(e.trigger, Notify.Success);
+});
+
+clipboard.on('error', function (e) {
+    showNotification(e.trigger, Notify.Fail);
+});
+
+function showNotification(btn, notify) {
+    const notificationElement = btn.parentElement.querySelector(notify);
+    notificationElement.style.display = 'flex';
+    setTimeout(() => {
+        notificationElement.style.display = 'none';
+    }, 2000);
+}
diff --git a/static/copycode/clipboard.min.js b/static/copycode/clipboard.min.js
new file mode 100644
index 0000000..1103f81
--- /dev/null
+++ b/static/copycode/clipboard.min.js
@@ -0,0 +1,7 @@
+/*!
+ * clipboard.js v2.0.11
+ * https://clipboardjs.com/
+ *
+ * Licensed MIT © Zeno Rocha
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return b}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),r=n.n(e);function c(t){try{return document.execCommand(t)}catch(t){return}}var a=function(t){t=r()(t);return c("cut"),t};function o(t,e){var n,o,t=(n=t,o="rtl"===document.documentElement.getAttribute("dir"),(t=document.createElement("textarea")).style.fontSize="12pt",t.style.border="0",t.style.padding="0",t.style.margin="0",t.style.position="absolute",t.style[o?"right":"left"]="-9999px",o=window.pageYOffset||document.documentElement.scrollTop,t.style.top="".concat(o,"px"),t.setAttribute("readonly",""),t.value=n,t);return e.container.appendChild(t),e=r()(t),c("copy"),t.remove(),e}var f=function(t){var e=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{container:document.body},n="";return"string"==typeof t?n=o(t,e):t instanceof HTMLInputElement&&!["text","search","url","tel","password"].includes(null==t?void 0:t.type)?n=o(t.value,e):(n=r()(t),c("copy")),n};function l(t){return(l="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t})(t)}var s=function(){var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:{},e=t.action,n=void 0===e?"copy":e,o=t.container,e=t.target,t=t.text;if("copy"!==n&&"cut"!==n)throw new Error('Invalid "action" value, use either "copy" or "cut"');if(void 0!==e){if(!e||"object"!==l(e)||1!==e.nodeType)throw new Error('Invalid "target" value, use a valid Element');if("copy"===n&&e.hasAttribute("disabled"))throw new Error('Invalid "target" attribute. 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t=o?(t=v(this).constructor,Reflect.construct(e,arguments,t)):e.apply(this,arguments),e=this,!(t=t)||"object"!==p(t)&&"function"!=typeof t?function(t){if(void 0!==t)return t;throw new ReferenceError("this hasn't been initialised - super() hasn't been called")}(e):t}}function v(t){return(v=Object.setPrototypeOf?Object.getPrototypeOf:function(t){return t.__proto__||Object.getPrototypeOf(t)})(t)}function m(t,e){t="data-clipboard-".concat(t);if(e.hasAttribute(t))return e.getAttribute(t)}var b=function(){!function(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Super expression must either be null or a function");t.prototype=Object.create(e&&e.prototype,{constructor:{value:t,writable:!0,configurable:!0}}),e&&y(t,e)}(r,i());var t,e,n,o=h(r);function r(t,e){var n;return function(t){if(!(t instanceof r))throw new TypeError("Cannot call a class as a function")}(this),(n=o.call(this)).resolveOptions(e),n.listenClick(t),n}return t=r,n=[{key:"copy",value:function(t){var e=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{container:document.body};return f(t,e)}},{key:"cut",value:function(t){return a(t)}},{key:"isSupported",value:function(){var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:["copy","cut"],t="string"==typeof t?[t]:t,e=!!document.queryCommandSupported;return t.forEach(function(t){e=e&&!!document.queryCommandSupported(t)}),e}}],(e=[{key:"resolveOptions",value:function(){var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:{};this.action="function"==typeof t.action?t.action:this.defaultAction,this.target="function"==typeof t.target?t.target:this.defaultTarget,this.text="function"==typeof t.text?t.text:this.defaultText,this.container="object"===p(t.container)?t.container:document.body}},{key:"listenClick",value:function(t){var e=this;this.listener=u()(t,"click",function(t){return e.onClick(t)})}},{key:"onClick",value:function(t){var e=t.delegateTarget||t.currentTarget,n=this.action(e)||"copy",t=s({action:n,container:this.container,target:this.target(e),text:this.text(e)});this.emit(t?"success":"error",{action:n,text:t,trigger:e,clearSelection:function(){e&&e.focus(),window.getSelection().removeAllRanges()}})}},{key:"defaultAction",value:function(t){return m("action",t)}},{key:"defaultTarget",value:function(t){t=m("target",t);if(t)return document.querySelector(t)}},{key:"defaultText",value:function(t){return m("text",t)}},{key:"destroy",value:function(){this.listener.destroy()}}])&&d(t.prototype,e),n&&d(t,n),r}()},828:function(t){var e;"undefined"==typeof Element||Element.prototype.matches||((e=Element.prototype).matches=e.matchesSelector||e.mozMatchesSelector||e.msMatchesSelector||e.oMatchesSelector||e.webkitMatchesSelector),t.exports=function(t,e){for(;t&&9!==t.nodeType;){if("function"==typeof t.matches&&t.matches(e))return t;t=t.parentNode}}},438:function(t,e,n){var u=n(828);function i(t,e,n,o,r){var 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f=n(879),l=n(438);t.exports=function(t,e,n){if(!t&&!e&&!n)throw new Error("Missing required arguments");if(!f.string(e))throw new TypeError("Second argument must be a String");if(!f.fn(n))throw new TypeError("Third argument must be a Function");if(f.node(t))return c=e,a=n,(u=t).addEventListener(c,a),{destroy:function(){u.removeEventListener(c,a)}};if(f.nodeList(t))return o=t,r=e,i=n,Array.prototype.forEach.call(o,function(t){t.addEventListener(r,i)}),{destroy:function(){Array.prototype.forEach.call(o,function(t){t.removeEventListener(r,i)})}};if(f.string(t))return t=t,e=e,n=n,l(document.body,t,e,n);throw new TypeError("First argument must be a String, HTMLElement, HTMLCollection, or NodeList");var o,r,i,u,c,a}},817:function(t){t.exports=function(t){var e,n="SELECT"===t.nodeName?(t.focus(),t.value):"INPUT"===t.nodeName||"TEXTAREA"===t.nodeName?((e=t.hasAttribute("readonly"))||t.setAttribute("readonly",""),t.select(),t.setSelectionRange(0,t.value.length),e||t.removeAttribute("readonly"),t.value):(t.hasAttribute("contenteditable")&&t.focus(),n=window.getSelection(),(e=document.createRange()).selectNodeContents(t),n.removeAllRanges(),n.addRange(e),n.toString());return n}},279:function(t){function e(){}e.prototype={on:function(t,e,n){var o=this.e||(this.e={});return(o[t]||(o[t]=[])).push({fn:e,ctx:n}),this},once:function(t,e,n){var o=this;function r(){o.off(t,r),e.apply(n,arguments)}return r._=e,this.on(t,r,n)},emit:function(t){for(var e=[].slice.call(arguments,1),n=((this.e||(this.e={}))[t]||[]).slice(),o=0,r=n.length;o<r;o++)n[o].fn.apply(n[o].ctx,e);return this},off:function(t,e){var n=this.e||(this.e={}),o=n[t],r=[];if(o&&e)for(var i=0,u=o.length;i<u;i++)o[i].fn!==e&&o[i].fn._!==e&&r.push(o[i]);return r.length?n[t]=r:delete 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\ No newline at end of file
diff --git a/static/markdown.css b/static/markdown.css
index e15c326..0587506 100644
--- a/static/markdown.css
+++ b/static/markdown.css
@@ -180,6 +180,50 @@ blockquote {
     color: var(--alert-caution);
 }
 
+/* --------------------------------------------------------------------------
+ * COPY-CODE-BUTTON --------------------------------------------------------- */
+
+.copy-wrapper {
+    position: absolute;
+    top: 0.5rem;
+    right: 0.5rem;
+}
+.copy-button, .copy-success, .copy-fail {
+    position: absolute;
+    top: 0;
+    right: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 2rem;
+    width: 2rem;
+    padding: 0.4rem;
+    border: 0;
+    border-radius: 0.4rem;
+    background: none;
+    fill: var(--copy-button-fg);
+    cursor: pointer;
+    transition: opacity 0.2s, background 0.2s;
+}
+.copy-button {
+    opacity: 0;
+}
+pre:hover + .copy-wrapper > .copy-button {
+    opacity: 0.3;
+}
+.copy-button:hover {
+    opacity: 1;
+    background-color: var(--copy-button-bg);
+}
+.copy-success {
+    background: var(--copy-success-bg);
+    fill: var(--copy-success-fg);
+}
+.copy-fail {
+    background: var(--copy-fail-bg);
+    fill: var(--copy-fail-fg);
+}
+
 /* --------------------------------------------------------------------------
  * MISCELLANEOUS ------------------------------------------------------------ */