diff --git a/static/index.html b/static/index.html
index 22b214f..d9c3e9d 100644
--- a/static/index.html
+++ b/static/index.html
@@ -97,7 +97,9 @@ <h2>Issue creation</h2>
                         </label>
                     </fieldset>
 
-                    <button type="button" id="print-button">Send to print</button>
+                    <button type="button" id="print-button">
+                        <span class="loader">⧖</span> Send to print
+                    </button>
                     <button type="button" id="save-button">Save*</button>
                     <p style="grid-column: span 2; text-align: right; margin-top: -0.5rem;">
                         <small>
diff --git a/static/main.js b/static/main.js
index eb15edd..e2f3b26 100644
--- a/static/main.js
+++ b/static/main.js
@@ -168,13 +168,31 @@ function prepareIssue() {
     });
 }
 
+function startLoader() {
+    var button = document.getElementById("print-button");
+    var loaders = button.getElementsByClassName("loader");
+    for (let loader of loaders) {
+        loader.style.display = "inline-block";
+    }
+    button.disabled = true;
+}
+
+function stopLoader() {
+    var button = document.getElementById("print-button");
+    var loaders = button.getElementsByClassName("loader");
+    for (let loader of loaders) {
+        loader.style.display = "none";
+    }
+    button.disabled = false;
+}
+
 async function generatePDF() {
-    document.getElementById("print-button").disabled = true;
+    startLoader();
 
     var resp;
     var respJson;
-    const resourceUrl = "/api/issue/";
-    //const resourceUrl = "http://127.0.0.1:8001/issue/";
+    //const resourceUrl = "/api/issue/";
+    const resourceUrl = "http://127.0.0.1:8001/issue/";
 
     try {
         resp = await fetch(resourceUrl, {
@@ -208,5 +226,5 @@ async function generatePDF() {
         console.error("Failed to generate PDF");
     } 
 
-    document.getElementById("print-button").disabled = false;
+    stopLoader();
 }
diff --git a/static/style.css b/static/style.css
index 01ab7ed..fdaf90c 100644
--- a/static/style.css
+++ b/static/style.css
@@ -99,3 +99,14 @@ button.inline-button {
 #image-list span {
     overflow-wrap: break-word;
 }
+
+/* Loading animation */
+@keyframes spin {
+    from {transform: rotateZ(0deg);}
+    to {transform: rotateZ(360deg);}
+}
+.loader {
+    display: none;
+    animation: spin 5s linear infinite;
+    font-size: 2rem;
+}