diff --git a/src/UI/UIWindowProgress.js b/src/UI/UIWindowProgress.js
new file mode 100644
index 000000000..85dc5da9f
--- /dev/null
+++ b/src/UI/UIWindowProgress.js
@@ -0,0 +1,125 @@
+/**
+ * Copyright (C) 2024 Puter Technologies Inc.
+ *
+ * This file is part of Puter.
+ *
+ * Puter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import UIWindow from './UIWindow.js'
+import Placeholder from '../util/Placeholder.js';
+import Button from './Components/Button.js';
+
+/**
+ * General purpose progress dialog.
+ * @param operation_id If provided, is saved in the data-operation-id attribute, for later lookup.
+ * @param show_progress Enable a progress bar, and display `(foo%)` after the status message
+ * @param on_cancel A callback run when the Cancel button is clicked. Without it, no Cancel button will appear.
+ * @returns {Promise<{set_progress: *, set_status: *, close: *, element: Element}>} Object for managing the progress dialog
+ * @constructor
+ * TODO: Error display
+ * TODO: Debouncing logic (show only after a delay, then hide only after a delay)
+ */
+async function UIWindowProgress({
+    operation_id = null,
+    show_progress = false,
+    on_cancel = null,
+} = {}){
+    const placeholder_cancel_btn = Placeholder();
+
+    let h = '';
+    h += `<div ${operation_id ? `data-operation-id="${operation_id}"` : ''}>`;
+        h += `<div style="display: flex; align-items: center;">`;
+            // spinner
+            h += `<svg style="margin-right: 7px; overflow: visible;" xmlns="http://www.w3.org/2000/svg" height="24" width="24" viewBox="0 0 24 24"><title>circle anim</title><g fill="#212121" class="nc-icon-wrapper"><g class="nc-loop-circle-24-icon-f"><path d="M12 24a12 12 0 1 1 12-12 12.013 12.013 0 0 1-12 12zm0-22a10 10 0 1 0 10 10A10.011 10.011 0 0 0 12 2z" fill="#212121" opacity=".4"></path><path d="M24 12h-2A10.011 10.011 0 0 0 12 2V0a12.013 12.013 0 0 1 12 12z" data-color="color-2"></path></g><style>.nc-loop-circle-24-icon-f{--animation-duration:0.5s;transform-origin:12px 12px;animation:nc-loop-circle-anim var(--animation-duration) infinite linear}@keyframes nc-loop-circle-anim{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}</style></g></svg>`;
+            // Progress report
+            h += `<div style="font-size:15px; overflow: hidden; flex-grow: 1; text-overflow: ellipsis; white-space: nowrap;">
+                <span class="progress-msg">${i18n('preparing')}</span>`;
+            if (show_progress) {
+                h += ` (<span class="progress-percent">0%</span>)`;
+            }
+            h += `</div>`;
+        h +=`</div>`;
+        if (show_progress) {
+            h += `<div class="progress-bar-container" style="margin-top:20px;">`;
+                h += `<div class="progress-bar"></div>`;
+            h += `</div>`;
+        }
+        if (on_cancel) {
+            h += `<div style="display: flex; justify-content: flex-end;">`;
+                h += placeholder_cancel_btn.html;
+            h += `</div>`;
+        }
+    h += `</div>`;
+
+    const el_window = await UIWindow({
+        uid: null,
+        is_dir: false,
+        body_content: h,
+        has_head: false,
+        selectable_body: false,
+        draggable_body: true,
+        allow_context_menu: false,
+        is_resizable: false,
+        is_droppable: false,
+        init_center: true,
+        allow_native_ctxmenu: false,
+        allow_user_select: false,
+        window_class: 'window-progress',
+        width: 450,
+        dominant: true,
+        window_css:{
+            height: 'initial',
+        },
+        body_css: {
+            padding: '22px',
+            width: 'initial',
+            'background-color': `hsla(
+                var(--primary-hue),
+                var(--primary-saturation),
+                var(--primary-lightness),
+                var(--primary-alpha))`,
+            'backdrop-filter': 'blur(3px)',
+        }    
+    });
+
+    if (on_cancel) {
+        const cancel_btn = new Button({
+            label: i18n('cancel'),
+            style: 'small',
+            on_click: () => {
+                $(el_window).close();
+                on_cancel();
+            },
+        });
+        cancel_btn.attach(placeholder_cancel_btn);
+    }
+
+    return {
+        element: el_window,
+        set_status: (text) => {
+            el_window.querySelector('.progress-msg').innerHTML = text;
+        },
+        set_progress: (percent) => {
+            el_window.querySelector('.progress-bar').style.width = `${percent}%`;
+            el_window.querySelector('.progress-percent').innerText = `${percent}%`;
+        },
+        close: () => {
+            $(el_window).close();
+        },
+        // TODO: show_error(), which replaces the window content with a title, error message, and OK button
+    };
+}
+
+export default UIWindowProgress;
\ No newline at end of file
diff --git a/src/css/style.css b/src/css/style.css
index faa21aba9..69a19e30d 100644
--- a/src/css/style.css
+++ b/src/css/style.css
@@ -2708,17 +2708,19 @@ fieldset[name=number-code] {
     }
 }
 
-.upload-progress-bar-container, .download-progress-bar-container {
+.progress-bar-container, .upload-progress-bar-container, .download-progress-bar-container {
+    box-sizing: border-box;
     width: 100%;
-    height: 15px;
+    height: 17px;
     border: 1px solid rgb(40 109 157);
+    border-radius: 3px;
     background-color: white;
     box-shadow: inset -1px 3px 4px #dfdfdf;
 }
 
-.upload-progress-bar, .download-progress-bar {
+.progress-bar, .upload-progress-bar, .download-progress-bar {
     width: 0;
-    height: 15px;
+    height: 100%;
     background-color: rgb(0 137 255);
     transition: 0.4s width;
     background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.05));
@@ -3937,4 +3939,4 @@ fieldset[name=number-code] {
 .taskmgr-task-title {
     flex-grow: 1;
     padding-left: calc(2.5 * var(--scale));
-}
\ No newline at end of file
+}