diff --git a/lib/LaTeXML/resources/CSS/ltx-listings.css b/lib/LaTeXML/resources/CSS/ltx-listings.css
index 3dcf678ce9..c0f47215af 100644
--- a/lib/LaTeXML/resources/CSS/ltx-listings.css
+++ b/lib/LaTeXML/resources/CSS/ltx-listings.css
@@ -1,5 +1,56 @@
-
 .ltx_listing_data {
-  float:right; }  
+  float: right;
+}
 .ltx_listing_data a {
-  text-decoration:none; }
\ No newline at end of file
+  text-decoration: none;
+}
+.ltx_listing_copy2clip {
+  position: absolute;
+}
+.ltx_listing_button {
+  appearance: none;
+  background-color: #FAFBFC;
+  border: 1px solid rgba(27, 31, 35, 0.15);
+  border-radius: 6px;
+  box-shadow: rgba(27, 31, 35, 0.04) 0 1px 0, rgba(255, 255, 255, 0.25) 0 1px 0 inset;
+  box-sizing: border-box;
+  color: #24292E;
+  cursor: pointer;
+  height: 36px;
+  padding: 6px;
+  position: relative;
+  overflow: hidden;
+  width: 36px
+}
+.ltx_listing_button::before,
+.ltx_listing_button::after {
+  content: "";
+  position: absolute;
+  inset: 0;
+  background-position: center;
+  background-repeat: no-repeat;
+  background-size: 60%;
+  transition: opacity 0.6s ease-in-out;
+}
+.ltx_listing_button::before {
+  opacity: 1;
+  /* copy icon */
+  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444' fill='none'%3E%3Cdefs%3E%3CclipPath id='clip1'%3E%3Cpath d='M0 0h359v444H0zM37 97v310h225V97z'/%3E%3C/clipPath%3E%3CclipPath id='clip2'%3E%3Cpath d='M0 0h359v444H0zM97 37v310h225V37z'/%3E%3C/clipPath%3E%3C/defs%3E%3Crect x='37' y='97' width='225' height='310' fill='white'/%3E%3Crect x='37' y='97' width='225' height='310' fill='none' stroke='gray' stroke-linecap='round' stroke-linejoin='round' stroke-width='72' clip-path='url(%23clip1)'/%3E%3Crect x='97' y='37' width='225' height='310' fill='white'/%3E%3Crect x='97' y='37' width='225' height='310' fill='none' stroke='gray' stroke-linecap='round' stroke-linejoin='round' stroke-width='72' clip-path='url(%23clip2)'/%3E%3C/svg%3E");
+}
+.ltx_listing_button::after {
+  opacity: 0;
+}
+.ltx_listing_button.success::after {
+  opacity: 1;
+  /* success icon */
+  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444'%3E%3Ccircle cx='179.5' cy='222' r='178.3' fill='%2300a337'/%3E%3Cpath d='M235.3 109.5 L123.6 308.2 L155.7 305.4 L110.7 245.6 L96.7 227.7 L65.8 267.7 L80.5 283.0 L125.3 340.5 L143.7 364.9 L158.5 338.1 L270.2 138.8 L281.8 117.8 L247.0 87.9 Z' fill='white'/%3E%3C/svg%3E");
+}
+.ltx_listing_button.error::after {
+  opacity: 1;
+  /* error icon */
+  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444'%3E%3Ccircle cx='179.5' cy='222' r='178.3' fill='%23c33641'/%3E%3Cline x1='110.3' y1='138.3' x2='245.6' y2='305.4' stroke='white' stroke-linecap='square' stroke-width='56.1'/%3E%3Cline x1='247.0' y1='136.0' x2='111.6' y2='303.7' stroke='white' stroke-linecap='square' stroke-width='56.1'/%3E%3C/svg%3E");
+}
+.ltx_listing_button.success::before,
+.ltx_listing_button.error::before {
+  opacity: 0;
+}
\ No newline at end of file
diff --git a/lib/LaTeXML/resources/javascript/lstlisting.js b/lib/LaTeXML/resources/javascript/lstlisting.js
new file mode 100644
index 0000000000..a0dd3ca520
--- /dev/null
+++ b/lib/LaTeXML/resources/javascript/lstlisting.js
@@ -0,0 +1,39 @@
+// replace download links in lstlisting environments by copy to clipboard button
+// requires images/copy.svg and images/ok.svg
+// (c) Christoph Hauert 2025
+
+function copy2clip(button) {
+	try {
+		// temporarily hide line numbers in code listing
+	    const style = document.createElement('style');
+	    document.head.appendChild(style);
+	    const styleSheet = style.sheet;
+		var hideLine = styleSheet.insertRule(".ltx_tag_listingline { display: none; }");
+		var hideCopy = styleSheet.insertRule(".ltx_listing_data { display: none; }");
+	    const textToCopy = button.parentNode.parentNode.parentNode.innerText;
+		navigator.clipboard.writeText(textToCopy);
+		styleSheet.deleteRule(hideCopy);
+		styleSheet.deleteRule(hideLine);
+		button.classList.remove("error");
+		button.classList.add("success");
+	} catch (e) {
+		button.classList.remove("success");
+		button.classList.add("error");
+	}
+	setTimeout(() => {
+		button.classList.remove("success", "error");
+	}, 1200);
+}
+
+window.addEventListener("load", () => {
+	const elements = document.getElementsByClassName("ltx_listing_data");
+	const copyButton = '<div class="ltx_listing_copy2clip">' +
+		'<button class="ltx_listing_button" onclick="copy2clip(this)" title="Copy to clipboard">' +
+		'</button></div>';
+	Array.from(elements).forEach(el => {
+		if (el.firstChild) {
+			el.removeChild(el.firstChild);
+		}
+		el.insertAdjacentHTML('afterbegin', copyButton);
+	});
+});