diff --git a/public/workflows/defaultWorkflow.json b/public/workflows/defaultWorkflow.json
index 7890270..d54daac 100644
--- a/public/workflows/defaultWorkflow.json
+++ b/public/workflows/defaultWorkflow.json
@@ -61,7 +61,7 @@
         ],
         "title": "UI.Gallery",
         "properties": {
-          "tags": [],
+          "tags": ["gen"],
           "defaultValue": [],
           "index": 3,
           "updateMode": "append",
@@ -1694,7 +1694,7 @@
         ],
         "title": "UI.Gallery",
         "properties": {
-          "tags": [],
+          "tags": ["hr"],
           "defaultValue": [],
           "index": 1,
           "updateMode": "append",
diff --git a/src/lib/api.ts b/src/lib/api.ts
index 492aa2b..ec54872 100644
--- a/src/lib/api.ts
+++ b/src/lib/api.ts
@@ -101,6 +101,7 @@ export type ComfyUIPromptExtraData = {
 }
 
 type ComfyAPIEvents = {
+    // JSON
     status: (status: ComfyAPIStatusResponse | null, error?: Error | null) => void,
     progress: (progress: Progress) => void,
     reconnecting: () => void,
@@ -111,6 +112,9 @@ type ComfyAPIEvents = {
     execution_cached: (promptID: PromptID, nodes: ComfyNodeID[]) => void,
     execution_interrupted: (error: ComfyInterruptedError) => void,
     execution_error: (error: ComfyExecutionError) => void,
+
+    // Binary
+    b_preview: (imageBlob: Blob) => void
 }
 
 export default class ComfyAPI {
@@ -126,7 +130,7 @@ export default class ComfyAPI {
     }
 
     /**
-     * Poll status  for colab and other things that don't support websockets.
+     * Poll status for colab and other things that don't support websockets.
      */
     private pollQueue() {
         setInterval(async () => {
@@ -176,6 +180,7 @@ export default class ComfyAPI {
         this.socket = new WebSocket(
             `ws${window.location.protocol === "https:" ? "s" : ""}://${hostname}:${port}/ws${existingSession}`
         );
+        this.socket.binaryType = "arraybuffer";
 
         this.socket.addEventListener("open", () => {
             opened = true;
@@ -204,38 +209,64 @@ export default class ComfyAPI {
 
         this.socket.addEventListener("message", (event) => {
             try {
-                const msg = JSON.parse(event.data);
-                switch (msg.type) {
-                    case "status":
-                        if (msg.data.sid) {
-                            this.clientId = msg.data.sid;
-                            sessionStorage["Comfy.SessionId"] = this.clientId;
-                        }
-                        this.eventBus.emit("status", { execInfo: { queueRemaining: msg.data.status.exec_info.queue_remaining } });
-                        break;
-                    case "progress":
-                        this.eventBus.emit("progress", msg.data as Progress);
-                        break;
-                    case "executing":
-                        this.eventBus.emit("executing", msg.data.prompt_id, msg.data.node);
-                        break;
-                    case "executed":
-                        this.eventBus.emit("executed", msg.data.prompt_id, msg.data.node, msg.data.output);
-                        break;
-                    case "execution_start":
-                        this.eventBus.emit("execution_start", msg.data.prompt_id);
-                        break;
-                    case "execution_cached":
-                        this.eventBus.emit("execution_cached", msg.data.prompt_id, msg.data.nodes);
-                        break;
-                    case "execution_interrupted":
-                        this.eventBus.emit("execution_interrupted", msg.data);
-                        break;
-                    case "execution_error":
-                        this.eventBus.emit("execution_error", msg.data);
-                        break;
-                    default:
-                        console.warn("Unhandled message:", event.data);
+                if (event.data instanceof ArrayBuffer) {
+                    const view = new DataView(event.data);
+                    const eventType = view.getUint32(0);
+                    const buffer = event.data.slice(4);
+                    switch (eventType) {
+                        case 1:
+                            const view2 = new DataView(event.data);
+                            const imageType = view2.getUint32(0)
+                            let imageMime: string
+                            switch (imageType) {
+                                case 1:
+                                default:
+                                    imageMime = "image/jpeg";
+                                    break;
+                                case 2:
+                                    imageMime = "image/png"
+                            }
+                            const imageBlob = new Blob([buffer.slice(4)], { type: imageMime });
+                            this.eventBus.emit("b_preview", imageBlob);
+                            break;
+                        default:
+                            throw new Error(`Unknown binary websocket message of type ${eventType}`);
+                    }
+                }
+                else {
+                    const msg = JSON.parse(event.data);
+                    switch (msg.type) {
+                        case "status":
+                            if (msg.data.sid) {
+                                this.clientId = msg.data.sid;
+                                sessionStorage["Comfy.SessionId"] = this.clientId;
+                            }
+                            this.eventBus.emit("status", { execInfo: { queueRemaining: msg.data.status.exec_info.queue_remaining } });
+                            break;
+                        case "progress":
+                            this.eventBus.emit("progress", msg.data as Progress);
+                            break;
+                        case "executing":
+                            this.eventBus.emit("executing", msg.data.prompt_id, msg.data.node);
+                            break;
+                        case "executed":
+                            this.eventBus.emit("executed", msg.data.prompt_id, msg.data.node, msg.data.output);
+                            break;
+                        case "execution_start":
+                            this.eventBus.emit("execution_start", msg.data.prompt_id);
+                            break;
+                        case "execution_cached":
+                            this.eventBus.emit("execution_cached", msg.data.prompt_id, msg.data.nodes);
+                            break;
+                        case "execution_interrupted":
+                            this.eventBus.emit("execution_interrupted", msg.data);
+                            break;
+                        case "execution_error":
+                            this.eventBus.emit("execution_error", msg.data);
+                            break;
+                        default:
+                            console.warn("Unhandled message:", event.data);
+                    }
                 }
             } catch (error) {
                 console.error("Error handling message", event.data, error);
diff --git a/src/lib/components/ComfyApp.ts b/src/lib/components/ComfyApp.ts
index 97abc08..0f0369c 100644
--- a/src/lib/components/ComfyApp.ts
+++ b/src/lib/components/ComfyApp.ts
@@ -651,6 +651,10 @@ export default class ComfyApp {
             }
         });
 
+        this.api.addEventListener("b_preview", (imageBlob: Blob) => {
+            queueState.previewUpdated(imageBlob);
+        });
+
         const config = get(configState);
 
         if (config.pollSystemStatsInterval > 0) {
diff --git a/src/lib/components/ComfyBoxWorkflowsView.svelte b/src/lib/components/ComfyBoxWorkflowsView.svelte
index 4fd5430..722a1dd 100644
--- a/src/lib/components/ComfyBoxWorkflowsView.svelte
+++ b/src/lib/components/ComfyBoxWorkflowsView.svelte
@@ -386,6 +386,9 @@
                 <span style="display: inline-flex !important; padding: 0 0.75rem;">
                     <Checkbox label="Auto-Add UI" bind:value={$uiState.autoAddUI}/>
                 </span>
+                <span style="display: inline-flex !important; padding: 0 0.75rem;">
+                    <Checkbox label="Hide Previews" bind:value={$uiState.hidePreviews}/>
+                </span>
                 <!-- <span class="label" for="ui-edit-mode">
                      <BlockTitle>UI Edit mode</BlockTitle>
                      <select id="ui-edit-mode" name="ui-edit-mode" bind:value={$uiState.uiEditMode}>
diff --git a/src/lib/components/ComfyQueue.svelte b/src/lib/components/ComfyQueue.svelte
index 31719e2..a9c50a9 100644
--- a/src/lib/components/ComfyQueue.svelte
+++ b/src/lib/components/ComfyQueue.svelte
@@ -1,18 +1,3 @@
-<script lang="ts" context="module">
- export type QueueUIEntryStatus = QueueEntryStatus | "pending" | "running";
-
- export type QueueUIEntry = {
-     entry: QueueEntry,
-     message: string,
-     submessage: string,
-     date?: string,
-     status: QueueUIEntryStatus,
-     images?: string[], // URLs
-     details?: string, // shown in a tooltip on hover
-     error?: WorkflowError
- }
-</script>
-
 <script lang="ts">
  import queueState, { type CompletedQueueEntry, type QueueEntry, type QueueEntryStatus } from "$lib/stores/queueState";
  import ProgressBar from "./ProgressBar.svelte";
@@ -20,7 +5,7 @@
  import Spinner from "./Spinner.svelte";
  import PromptDisplay from "./PromptDisplay.svelte";
  import { List, ListUl, Grid } from "svelte-bootstrap-icons";
- import { convertComfyOutputToComfyURL, convertFilenameToComfyURL, getNodeInfo, truncateString } from "$lib/utils"
+ import { getNodeInfo, type ComfyImageLocation } from "$lib/utils"
  import type { Writable } from "svelte/store";
  import type { QueueItemType } from "$lib/api";
  import { Button } from "@gradio/button";
@@ -31,7 +16,7 @@
  import ComfyQueueListDisplay from "./ComfyQueueListDisplay.svelte";
  import ComfyQueueGridDisplay from "./ComfyQueueGridDisplay.svelte";
 	import { WORKFLOWS_VIEW } from "./ComfyBoxWorkflowsView.svelte";
-	import uiQueueState from "$lib/stores/uiQueueState";
+	import uiQueueState, { type QueueUIEntry } from "$lib/stores/uiQueueState";
 
  export let app: ComfyApp;
 
@@ -125,7 +110,7 @@
  let showModal = false;
  let expandAll = false;
  let selectedPrompt = null;
- let selectedImages = [];
+ let selectedImages: ComfyImageLocation[] = [];
  function showPrompt(entry: QueueUIEntry) {
      if (entry.error != null) {
          showModal = false;
diff --git a/src/lib/components/ComfyQueueGridDisplay.svelte b/src/lib/components/ComfyQueueGridDisplay.svelte
index 8ca6509..ce8e5c3 100644
--- a/src/lib/components/ComfyQueueGridDisplay.svelte
+++ b/src/lib/components/ComfyQueueGridDisplay.svelte
@@ -1,6 +1,6 @@
 <script lang="ts">
  import type { QueueItemType } from "$lib/api";
- import { showLightbox } from "$lib/utils";
+ import { convertComfyOutputToComfyURL, showLightbox } from "$lib/utils";
  import type { QueueUIEntry } from "./ComfyQueue.svelte";
  import queueState from "$lib/stores/queueState";
 
@@ -19,7 +19,7 @@
      allEntries = []
      for (const entry of entries) {
          for (const image of entry.images) {
-             allEntries.push([entry, image]);
+             allEntries.push([entry, convertComfyOutputToComfyURL(image, true)]);
          }
      }
      allImages = allEntries.map(p => p[1]);
@@ -56,6 +56,7 @@
                     <img class="grid-entry-image"
                          on:click={(e) => handleClick(e, entry, i)}
                     src={image}
+                    loading="lazy"
                     alt="thumbnail" />
                 </div>
             {/each}
@@ -130,6 +131,8 @@
  .grid-entry-image {
      aspect-ratio: 1 / 1;
      object-fit: cover;
+     width: 100%;
+     max-width: unset;
 
      &:hover {
          cursor: pointer;
diff --git a/src/lib/components/ComfyQueueListDisplay.svelte b/src/lib/components/ComfyQueueListDisplay.svelte
index 751a9f8..d8dd4ab 100644
--- a/src/lib/components/ComfyQueueListDisplay.svelte
+++ b/src/lib/components/ComfyQueueListDisplay.svelte
@@ -1,8 +1,8 @@
 <script lang="ts">
  import type { QueueItemType } from "$lib/api";
- import { showLightbox, truncateString } from "$lib/utils";
- import type { QueueUIEntry } from "./ComfyQueue.svelte";
+ import { convertComfyOutputToComfyURL, showLightbox, truncateString } from "$lib/utils";
  import queueState from "$lib/stores/queueState";
+ import type { QueueUIEntry } from "$lib/stores/uiQueueState";
 
  export let entries: QueueUIEntry[] = [];
  export let showPrompt: (entry: QueueUIEntry) => void;
@@ -39,11 +39,13 @@
                     <div class="list-entry-images"
                          style="--cols: {Math.ceil(Math.sqrt(Math.min(entry.images.length, 4)))}" >
                         {#each entry.images.slice(0, 4) as image, i}
+                            {@const imageURL = convertComfyOutputToComfyURL(image, true)}
                             <div>
                                 <!-- svelte-ignore a11y-click-events-have-key-events -->
                                 <img class="list-entry-image"
                                      on:click={(e) => showLightbox(entry.images, i, e)}
-                                src={image}
+                                src={imageURL}
+                                loading="lazy"
                                 alt="thumbnail" />
                             </div>
                         {/each}
diff --git a/src/lib/components/PromptDisplay.svelte b/src/lib/components/PromptDisplay.svelte
index b96e2c7..ee9de16 100644
--- a/src/lib/components/PromptDisplay.svelte
+++ b/src/lib/components/PromptDisplay.svelte
@@ -8,7 +8,7 @@
  import Gallery from "$lib/components/gradio/gallery/Gallery.svelte";
  import { ImageViewer } from "$lib/ImageViewer";
  import type { Styles } from "@gradio/utils";
- import { comfyFileToComfyBoxMetadata, comfyURLToComfyFile, countNewLines } from "$lib/utils";
+ import { comfyFileToComfyBoxMetadata, comfyURLToComfyFile, countNewLines, type ComfyImageLocation, convertComfyOutputToComfyURL } from "$lib/utils";
  import ReceiveOutputTargets from "./modal/ReceiveOutputTargets.svelte";
  import workflowState, { type ComfyBoxWorkflow, type WorkflowReceiveOutputTargets } from "$lib/stores/workflowState";
  import type { ComfyReceiveOutputNode } from "$lib/nodes/actions";
@@ -17,7 +17,7 @@
  const splitLength = 50;
 
  export let prompt: SerializedPromptInputsAll;
- export let images: string[] = []; // list of image URLs to ComfyUI's /view? endpoint
+ export let images: ComfyImageLocation[] = [];
  export let isMobile: boolean = false;
  export let expandAll: boolean = false;
  export let closeModal: () => void;
@@ -36,10 +36,7 @@
  let litegraphType = "(none)"
 
  $: if (images.length > 0) {
-     // since the image links come from gradio, have to parse the URL for the
-     // ComfyImageLocation params
-     comfyBoxImages = images.map(comfyURLToComfyFile)
-                            .map(comfyFileToComfyBoxMetadata);
+     comfyBoxImages = images.map(comfyFileToComfyBoxMetadata);
  }
  else {
      comfyBoxImages = []
@@ -199,7 +196,7 @@
         <div class="image-container">
             <Block>
                 <Gallery
-                    value={images}
+                    value={images.map(convertComfyOutputToComfyURL)}
                     label=""
                     show_label={false}
                     style={galleryStyle}
diff --git a/src/lib/nodes/widgets/ComfyGalleryNode.ts b/src/lib/nodes/widgets/ComfyGalleryNode.ts
index 1267d18..0896a67 100644
--- a/src/lib/nodes/widgets/ComfyGalleryNode.ts
+++ b/src/lib/nodes/widgets/ComfyGalleryNode.ts
@@ -9,7 +9,8 @@ import ComfyWidgetNode from "./ComfyWidgetNode";
 export interface ComfyGalleryProperties extends ComfyWidgetProperties {
     index: number | null,
     updateMode: "replace" | "append",
-    autoSelectOnUpdate: boolean
+    autoSelectOnUpdate: boolean,
+    showPreviews: boolean
 }
 
 export default class ComfyGalleryNode extends ComfyWidgetNode<ComfyBoxImageMetadata[]> {
@@ -18,7 +19,8 @@ export default class ComfyGalleryNode extends ComfyWidgetNode<ComfyBoxImageMetad
         defaultValue: [],
         index: 0,
         updateMode: "replace",
-        autoSelectOnUpdate: true
+        autoSelectOnUpdate: true,
+        showPreviews: true
     }
 
     static slotLayout: SlotLayout = {
diff --git a/src/lib/stores/configDefs.ts b/src/lib/stores/configDefs.ts
index 4cd07b2..01ceb92 100644
--- a/src/lib/stores/configDefs.ts
+++ b/src/lib/stores/configDefs.ts
@@ -119,6 +119,36 @@ const defNotifications: ConfigDefEnum<"notifications", NotificationState> = {
     }
 };
 
+export enum OutputThumbnailsMode {
+    Auto,
+    AlwaysThumbnail,
+    AlwaysFullSize
+}
+
+const defOutputThumbnails: ConfigDefEnum<"outputThumbnails", OutputThumbnailsMode> = {
+    name: "outputThumbnails",
+    type: "enum",
+    defaultValue: OutputThumbnailsMode.Auto,
+    category: "ui",
+    description: "If enabled, send back smaller sized output image thumbnails for gallery/queue/history. Enable if you have slow network or are using Colab.",
+    options: {
+        values: [
+            {
+                value: OutputThumbnailsMode.Auto,
+                label: "Autodetect"
+            },
+            {
+                value: OutputThumbnailsMode.AlwaysThumbnail,
+                label: "Always use thumbnails"
+            },
+            {
+                value: OutputThumbnailsMode.AlwaysFullSize,
+                label: "Always use full size"
+            },
+        ]
+    }
+};
+
 const defAlwaysStripUserState: ConfigDefBoolean<"alwaysStripUserState"> = {
     name: "alwaysStripUserState",
     type: "boolean",
@@ -207,6 +237,7 @@ export const CONFIG_DEFS = [
     defComfyUIHostname,
     defComfyUIPort,
     defNotifications,
+    defOutputThumbnails,
     defAlwaysStripUserState,
     defPromptForWorkflowName,
     defConfirmWhenUnloadingUnsavedChanges,
diff --git a/src/lib/stores/layoutStates.ts b/src/lib/stores/layoutStates.ts
index bae1f34..31c4457 100644
--- a/src/lib/stores/layoutStates.ts
+++ b/src/lib/stores/layoutStates.ts
@@ -615,6 +615,14 @@ const ALL_ATTRIBUTES: AttributesSpecList = [
                 validNodeTypes: ["ui/gallery"],
                 defaultValue: true
             },
+            {
+                name: "showPreviews",
+                type: "boolean",
+                location: "nodeProps",
+                editable: true,
+                validNodeTypes: ["ui/gallery"],
+                defaultValue: true
+            },
 
             // ImageUpload
             {
diff --git a/src/lib/stores/queueState.ts b/src/lib/stores/queueState.ts
index 9e45774..f716630 100644
--- a/src/lib/stores/queueState.ts
+++ b/src/lib/stores/queueState.ts
@@ -22,6 +22,7 @@ type QueueStateOps = {
     executionCached: (promptID: PromptID, nodes: ComfyNodeID[]) => void,
     executionError: (error: ComfyExecutionError) => CompletedQueueEntry | null,
     progressUpdated: (progress: Progress) => void
+    previewUpdated: (imageBlob: Blob) => void
     getQueueEntry: (promptID: PromptID) => QueueEntry | null;
     afterQueued: (workflowID: WorkflowInstID, promptID: PromptID, number: number, prompt: SerializedPromptInputsAll, extraData: any) => void
     queueItemDeleted: (type: QueueItemType, id: PromptID) => void;
@@ -88,6 +89,11 @@ export type QueueState = {
      */
     runningNodeID: ComfyNodeID | null;
 
+    /*
+     * Currently executing prompt if any
+     */
+    runningPromptID: PromptID | null;
+
     /*
      * Nodes which should be rendered as "executing" in the frontend (green border).
      * This includes the running node and all its parent subgraphs
@@ -98,6 +104,12 @@ export type QueueState = {
      * Progress for the current node reported by the frontend
      */
     progress: Progress | null,
+
+    /*
+     * Image preview URL
+     */
+    previewURL: string | null,
+
     /**
      * If true, user pressed the "Interrupt" button in the frontend. Disable the
      * button and wait until the next prompt starts running to re-enable it
@@ -115,6 +127,7 @@ const store: Writable<QueueState> = writable({
     runningNodeID: null,
     executingNodes: new Set(),
     progress: null,
+    preview: null,
     isInterrupting: false
 })
 
@@ -171,6 +184,19 @@ function progressUpdated(progress: Progress) {
     })
 }
 
+function previewUpdated(imageBlob: Blob) {
+    console.debug("[queueState] previewUpdated", imageBlob?.type)
+    store.update(s => {
+        if (s.runningNodeID == null) {
+            s.previewURL = null;
+            return s;
+        }
+
+        s.previewURL = URL.createObjectURL(imageBlob);
+        return s;
+    })
+}
+
 function statusUpdated(status: ComfyAPIStatusResponse | null) {
     console.debug("[queueState] statusUpdated", status)
     store.update((s) => {
@@ -296,6 +322,7 @@ function executingUpdated(promptID: PromptID, runningNodeID: ComfyNodeID | null)
                 entry.nodesRan.add(runningNodeID)
             }
             s.runningNodeID = runningNodeID;
+            s.runningPromptID = promptID;
 
             if (entry?.extraData?.workflowID) {
                 const workflow = workflowState.getWorkflow(entry.extraData.workflowID);
@@ -337,7 +364,9 @@ function executingUpdated(promptID: PromptID, runningNodeID: ComfyNodeID | null)
                 console.debug("[queueState] Could not find in pending! (executingUpdated)", promptID)
             }
             s.progress = null;
+            s.previewURL = null;
             s.runningNodeID = null;
+            s.runningPromptID = null;
             s.executingNodes.clear();
         }
         entry_ = entry;
@@ -362,7 +391,9 @@ function executionCached(promptID: PromptID, nodes: ComfyNodeID[]) {
         }
         s.isInterrupting = false; // TODO move to start
         s.progress = null;
+        s.previewURL = null;
         s.runningNodeID = null;
+        s.runningPromptID = null;
         s.executingNodes.clear();
         return s
     })
@@ -380,7 +411,9 @@ function executionError(error: ComfyExecutionError): CompletedQueueEntry | null
             console.error("[queueState] Could not find in pending! (executionError)", error.prompt_id)
         }
         s.progress = null;
+        s.previewURL = null;
         s.runningNodeID = null;
+        s.runningPromptID = null;
         s.executingNodes.clear();
         return s
     })
@@ -416,6 +449,7 @@ function executionStart(promptID: PromptID) {
         }
         s.isInterrupting = false;
         s.runningNodeID = null;
+        s.runningPromptID = promptID;
         s.executingNodes.clear();
         return s
     })
@@ -480,7 +514,9 @@ function queueCleared(type: QueueItemType) {
             s.queuePending.set([]);
             s.queueRemaining = 0;
             s.runningNodeID = null;
+            s.runningPromptID = null;
             s.progress = null;
+            s.previewURL = null;
             s.executingNodes.clear();
         }
         else {
@@ -535,6 +571,7 @@ const queueStateStore: WritableQueueStateStore =
     historyUpdated,
     statusUpdated,
     progressUpdated,
+    previewUpdated,
     executionStart,
     executingUpdated,
     executionCached,
diff --git a/src/lib/stores/uiQueueState.ts b/src/lib/stores/uiQueueState.ts
index a361c22..d16af8a 100644
--- a/src/lib/stores/uiQueueState.ts
+++ b/src/lib/stores/uiQueueState.ts
@@ -1,7 +1,8 @@
 import type { PromptID, QueueItemType } from '$lib/api';
+import type { ComfyImageLocation } from "$lib/utils";
 import { get, writable } from 'svelte/store';
 import type { Readable, Writable } from 'svelte/store';
-import queueState, { type CompletedQueueEntry, type QueueEntry } from './queueState';
+import queueState, { QueueEntryStatus, type CompletedQueueEntry, type QueueEntry } from './queueState';
 import type { WorkflowError } from './workflowState';
 import { convertComfyOutputToComfyURL } from '$lib/utils';
 
@@ -13,7 +14,7 @@ export type QueueUIEntry = {
     submessage: string,
     date?: string,
     status: QueueUIEntryStatus,
-    images?: string[], // URLs
+    images?: ComfyImageLocation[], // URLs
     details?: string, // shown in a tooltip on hover
     error?: WorkflowError
 }
@@ -94,13 +95,12 @@ function convertPendingEntry(entry: QueueEntry, status: QueueUIEntryStatus): Que
 
     const thumbnails = entry.extraData?.thumbnails
     if (thumbnails) {
-        result.images = thumbnails.map(convertComfyOutputToComfyURL);
+        result.images = [...thumbnails]
     }
 
     const outputs = Object.values(entry.outputs)
         .filter(o => o.images)
         .flatMap(o => o.images)
-        .map(convertComfyOutputToComfyURL);
     if (outputs) {
         result.images = result.images.concat(outputs)
     }
@@ -114,7 +114,6 @@ function convertCompletedEntry(entry: CompletedQueueEntry): QueueUIEntry {
     const images = Object.values(entry.entry.outputs)
         .filter(o => o.images)
         .flatMap(o => o.images)
-        .map(convertComfyOutputToComfyURL);
     result.images = images
 
     if (entry.message)
@@ -132,6 +131,8 @@ function updateFromQueue(queuePending: QueueEntry[], queueRunning: QueueEntry[])
         // newest entries appear at the top
         s.queuedEntries = queuePending.map((e) => convertPendingEntry(e, "pending")).reverse();
         s.runningEntries = queueRunning.map((e) => convertPendingEntry(e, "running")).reverse();
+        s.queuedEntries.sort((a, b) => a.entry.number - b.entry.number)
+        s.runningEntries.sort((a, b) => a.entry.number - b.entry.number)
         s.queueUIEntries = s.queuedEntries.concat(s.runningEntries);
         console.warn("[ComfyQueue] BUILDQUEUE", s.queuedEntries.length, s.runningEntries.length)
         return s;
diff --git a/src/lib/stores/uiState.ts b/src/lib/stores/uiState.ts
index e28bc90..2fb7e96 100644
--- a/src/lib/stores/uiState.ts
+++ b/src/lib/stores/uiState.ts
@@ -10,6 +10,7 @@ export type UIState = {
     autoAddUI: boolean,
     uiUnlocked: boolean,
     uiEditMode: UIEditMode,
+    hidePreviews: boolean,
 
     reconnecting: boolean,
     forceSaveUserState: boolean | null,
@@ -30,6 +31,7 @@ const store: Writable<UIState> = writable(
         autoAddUI: true,
         uiUnlocked: false,
         uiEditMode: "widgets",
+        hidePreviews: false,
 
         reconnecting: false,
         forceSaveUserState: null,
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 68bdff3..7b1df82 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -9,6 +9,7 @@ import workflowState, { type WorkflowReceiveOutputTargets } from "./stores/workf
 import { ImageViewer } from "./ImageViewer";
 import configState from "$lib/stores/configState";
 import SendOutputModal, { type SendOutputModalResult } from "$lib/components/modal/SendOutputModal.svelte";
+import { OutputThumbnailsMode } from "./stores/configDefs";
 
 export function clamp(n: number, min: number, max: number): number {
     if (max <= min)
@@ -300,31 +301,80 @@ export function convertComfyOutputToGradio(output: SerializedPromptOutput): Grad
 
 export function convertComfyOutputEntryToGradio(r: ComfyImageLocation): GradioFileData {
     const url = configState.getBackendURL();
-    const params = new URLSearchParams(r)
     const fileData: GradioFileData = {
         name: r.filename,
         orig_name: r.filename,
         is_file: false,
-        data: url + "/view?" + params
+        data: convertComfyOutputToComfyURL(r)
     }
     return fileData
 }
 
-export function convertComfyOutputToComfyURL(output: string | ComfyImageLocation): string {
+function convertComfyPreviewTypeToString(preview: ComfyImagePreviewType): string {
+    const arr = []
+    switch (preview.format) {
+        case ComfyImagePreviewFormat.JPEG:
+            arr.push("jpeg")
+            break;
+        case ComfyImagePreviewFormat.WebP:
+        default:
+            arr.push("webp")
+            break;
+    }
+
+    arr.push(String(preview.quality))
+
+    return arr.join(";")
+}
+
+export function convertComfyOutputToComfyURL(output: string | ComfyImageLocation, thumbnail: boolean = false): string {
     if (typeof output === "string")
         return output;
 
-    const params = new URLSearchParams(output)
+    const paramsObj = {
+        filename: output.filename,
+        subfolder: output.subfolder,
+        type: output.type
+    }
+
+    if (thumbnail) {
+        let doThumbnail: boolean;
+
+        switch (get(configState).outputThumbnails) {
+            case OutputThumbnailsMode.AlwaysFullSize:
+                doThumbnail = false;
+                break;
+            case OutputThumbnailsMode.AlwaysThumbnail:
+                doThumbnail = true;
+                break;
+            case OutputThumbnailsMode.Auto:
+            default:
+                // TODO detect colab, etc.
+                if (isMobileBrowser(navigator.userAgent)) {
+                    doThumbnail = true;
+                }
+                else {
+                    doThumbnail = false;
+                }
+                break;
+        }
+
+        if (doThumbnail) {
+            output.preview = {
+                format: ComfyImagePreviewFormat.WebP,
+                quality: 80
+            }
+        }
+    }
+
+    if (output.preview != null)
+        paramsObj["preview"] = convertComfyPreviewTypeToString(output.preview)
+
+    const params = new URLSearchParams(paramsObj)
     const url = configState.getBackendURL();
     return url + "/view?" + params
 }
 
-export function convertGradioFileDataToComfyURL(image: GradioFileData, type: ComfyUploadImageType = "input"): string {
-    const baseUrl = configState.getBackendURL();
-    const params = new URLSearchParams({ filename: image.name, subfolder: "", type })
-    return `${baseUrl}/view?${params}`
-}
-
 export function convertGradioFileDataToComfyOutput(fileData: GradioFileData, type: ComfyUploadImageType = "input"): ComfyImageLocation {
     if (!fileData.is_file)
         throw "Can't convert blob data to comfy output!"
@@ -336,18 +386,6 @@ export function convertGradioFileDataToComfyOutput(fileData: GradioFileData, typ
     }
 }
 
-export function convertFilenameToComfyURL(filename: string,
-    subfolder: string = "",
-    type: "input" | "output" | "temp" = "output"): string {
-    const params = new URLSearchParams({
-        filename,
-        subfolder,
-        type
-    })
-    const url = configState.getBackendURL();
-    return url + "/view?" + params
-}
-
 export function jsonToJsObject(json: string): string {
     // Try to parse, to see if it's real JSON
     JSON.parse(json);
@@ -413,6 +451,16 @@ export interface SerializedPromptOutput {
     [key: string]: any
 }
 
+export enum ComfyImagePreviewFormat {
+    WebP = "webp",
+    JPEG = "jpeg",
+}
+
+export type ComfyImagePreviewType = {
+    format: ComfyImagePreviewFormat,
+    quality: number
+}
+
 /** Raw output entry as received from ComfyUI's backend */
 export type ComfyImageLocation = {
     /* Filename with extension in the subfolder. */
@@ -420,7 +468,19 @@ export type ComfyImageLocation = {
     /* Subfolder in the containing folder. */
     subfolder: string,
     /* Base ComfyUI folder where the image is located. */
-    type: ComfyUploadImageType
+    type: ComfyUploadImageType,
+    /*
+     * Preview information
+     *
+     * "format;quality"
+     *
+     * ex)
+     * webp;50 -> webp, quality 50
+     * webp;50 -> webp, quality 50
+     * jpeg;80 -> rgb, jpeg, quality 80
+     *
+     */
+    preview?: ComfyImagePreviewType
 }
 
 /*
@@ -544,27 +604,54 @@ export function comfyBoxImageToComfyURL(image: ComfyBoxImageMetadata): string {
     return convertComfyOutputToComfyURL(image.comfyUIFile)
 }
 
+function parseComfyUIPreviewType(previewStr: string): ComfyImagePreviewType {
+    let split = previewStr.split(";")
+    let format = ComfyImagePreviewFormat.WebP;
+    if (split[0] === "webp")
+        format = ComfyImagePreviewFormat.WebP;
+    else if (split[0] === "jpeg")
+        format = ComfyImagePreviewFormat.JPEG;
+
+    let quality = parseInt(split[0])
+    if (isNaN(quality))
+        quality = 80
+
+    return { format, quality }
+}
+
 export function comfyURLToComfyFile(urlString: string): ComfyImageLocation | null {
     const url = new URL(urlString);
     const params = new URLSearchParams(url.search);
     const filename = params.get("filename")
     const type = params.get("type") as ComfyUploadImageType;
     const subfolder = params.get("subfolder") || ""
+    const previewStr = params.get("preview") || null;
+    let preview = null
+
+    if (previewStr != null) {
+        preview = parseComfyUIPreviewType(preview);
+    }
 
     // If at least filename and type exist then we're good
     if (filename != null && type != null) {
-        return { filename, type, subfolder }
+        return { filename, type, subfolder, preview }
     }
 
     return null;
 }
 
-export function showLightbox(images: string[], index: number, e: Event) {
+export function showLightbox(images: ComfyImageLocation[] | string[], index: number, e: Event) {
     e.preventDefault()
     if (!images)
         return
 
-    ImageViewer.instance.showModal(images, index);
+    let images_: string[]
+    if (typeof images[0] === "object")
+        images_ = (images as ComfyImageLocation[]).map(v => convertComfyOutputToComfyURL(v))
+    else
+        images_ = (images as string[])
+
+    ImageViewer.instance.showModal(images_, index);
 
     e.stopPropagation()
 }
diff --git a/src/lib/widgets/GalleryWidget.svelte b/src/lib/widgets/GalleryWidget.svelte
index c820d34..0ce01ee 100644
--- a/src/lib/widgets/GalleryWidget.svelte
+++ b/src/lib/widgets/GalleryWidget.svelte
@@ -11,7 +11,11 @@
  import { clamp, comfyBoxImageToComfyURL, type ComfyBoxImageMetadata } from "$lib/utils";
  import { f7 } from "framework7-svelte";
  import type { ComfyGalleryNode } from "$lib/nodes/widgets";
-	import { showMobileLightbox } from "$lib/components/utils";
+ import { showMobileLightbox } from "$lib/components/utils";
+ import queueState from "$lib/stores/queueState";
+ import uiState from "$lib/stores/uiState";
+ import { loadImage } from "./utils";
+ import Spinner from "$lib/components/Spinner.svelte";
 
  export let widget: WidgetLayout | null = null;
  export let isMobile: boolean = false;
@@ -25,6 +29,47 @@
 
  $: widget && setNodeValue(widget);
 
+ function tagsMatch(tags: string[] | null): boolean {
+     if(tags != null && tags.length > 0)
+         return node.properties.tags.length > 0 && node.properties.tags.every(t => tags.includes(t));
+     else
+         return node.properties.tags.length === 0;
+ }
+
+ let previewURL: string | null;
+ let previewImage: HTMLImageElement | null = null;
+ let previewElem: HTMLImageElement | null = null
+ $: {
+     previewURL = $queueState.previewURL;
+
+     if (previewURL && $queueState.runningPromptID != null && !$uiState.hidePreviews && node.properties.showPreviews) {
+         const queueEntry = queueState.getQueueEntry($queueState.runningPromptID)
+         if (queueEntry != null) {
+             const tags = queueEntry.extraData?.extra_pnginfo?.comfyBoxPrompt?.subgraphs;
+             if (tagsMatch(tags)) {
+                 loadImage(previewURL).then((img) => {
+                     previewImage = img;
+                 })
+             }
+             else {
+                 previewImage = null;
+             }
+         }
+         else {
+             previewImage = null;
+         }
+     }
+     else {
+         previewImage = null;
+     }
+ }
+
+ function showPreview() {
+ }
+
+ function hidePreview() {
+ }
+
  function setNodeValue(widget: WidgetLayout) {
      if (widget) {
          node = widget.node as ComfyGalleryNode
@@ -34,6 +79,8 @@
          imageHeight = node.imageHeight
          selected_image = node.selectedImage;
          forceSelectImage = node.forceSelectImage;
+         previewURL = null;
+         previewImage = null;
 
          if ($nodeValue != null) {
              if (node.properties.index < 0 || node.properties.index >= $nodeValue.length) {
@@ -108,6 +155,11 @@
         <div class="wrapper comfy-gallery-widget gradio-gallery" style={widget.attrs.style || ""}>
             <Block variant="solid" padding={false}>
                 <div class="padding">
+                    {#if previewImage}
+                        <div class="comfy-gallery-preview" on:mouseover={hidePreview} on:mouseout={showPreview} >
+                            <img src={previewImage.src} bind:this={previewElem} on:mouseout={showPreview} />
+                        </div>
+                    {/if}
                     <Gallery
                         value={images}
                         label={widget.attrs.title}
@@ -153,6 +205,29 @@
              }
          }
      }
+
+     &:hover .comfy-gallery-preview {
+         opacity: 0%;
+     }
+ }
+
+ .comfy-gallery-preview {
+     position: absolute;
+     top: 0;
+     left: 0;
+     width: 100%;
+     height: 100%;
+     z-index: var(--layer-top);
+     pointer-events: none;
+     transition: opacity 0.1s linear;
+     opacity: 100%;
+
+     > img {
+         width: var(--size-full);
+         height: var(--size-full);
+         object-fit: contain;
+         border: 5px dashed var(--secondary-400);
+     }
  }
 
  .padding {
diff --git a/src/mobile/routes/gallery.svelte b/src/mobile/routes/gallery.svelte
index 9efe72a..5c40a5a 100644
--- a/src/mobile/routes/gallery.svelte
+++ b/src/mobile/routes/gallery.svelte
@@ -1,17 +1,11 @@
 <script lang="ts">
  import { Page, Navbar, Block, Tabs, Tab, NavLeft, NavTitle, NavRight, Link, f7 } from "framework7-svelte"
- import WidgetContainer from "$lib/components/WidgetContainer.svelte";
  import type ComfyApp from "$lib/components/ComfyApp";
- import { writable, type Writable } from "svelte/store";
- import type { IDragItem, WritableLayoutStateStore } from "$lib/stores/layoutStates";
- import workflowState, { type ComfyBoxWorkflow, type WorkflowInstID } from "$lib/stores/workflowState";
  import interfaceState from "$lib/stores/interfaceState";
- import { onMount } from "svelte";
- import GenToolbar from '../GenToolbar.svelte'
- import { partition, showLightbox } from "$lib/utils";
-	import uiQueueState, { type QueueUIEntry } from "$lib/stores/uiQueueState";
-	import { showMobileLightbox } from "$lib/components/utils";
-	import notify from "$lib/notify";
+ import { convertComfyOutputToComfyURL, partition, showLightbox } from "$lib/utils";
+ import uiQueueState, { type QueueUIEntry } from "$lib/stores/uiQueueState";
+ import { showMobileLightbox } from "$lib/components/utils";
+ import notify from "$lib/notify";
 
  export let app: ComfyApp
 
@@ -33,7 +27,7 @@
      const _allEntries = []
      for (const entry of entries) {
          for (const image of entry.images) {
-             _allEntries.push([entry, image]);
+             _allEntries.push([entry, convertComfyOutputToComfyURL(image, true)]);
          }
      }
      allEntries = partition(_allEntries, gridCols);
diff --git a/src/mobile/routes/queue.svelte b/src/mobile/routes/queue.svelte
index a3f6ecd..1127436 100644
--- a/src/mobile/routes/queue.svelte
+++ b/src/mobile/routes/queue.svelte
@@ -8,7 +8,7 @@
  import interfaceState from "$lib/stores/interfaceState";
  import { onMount } from "svelte";
  import GenToolbar from '../GenToolbar.svelte'
- import { partition, showLightbox, truncateString } from "$lib/utils";
+ import { convertComfyOutputToComfyURL, partition, showLightbox, truncateString } from "$lib/utils";
 	import uiQueueState, { type QueueUIEntry } from "$lib/stores/uiQueueState";
 	import { showMobileLightbox } from "$lib/components/utils";
 	import queueState from "$lib/stores/queueState";
@@ -68,7 +68,7 @@
 
  function getCardImage(entry: QueueUIEntry): string {
      if (entry.images.length > 0)
-         return entry.images[0]
+         return convertComfyOutputToComfyURL(entry.images[0])
      return "https://cdn.framework7.io/placeholder/nature-1000x600-3.jpg"
  }
 </script>