diff --git a/quadratic-client/src/app/grid/actions/clipboard/clipboard.ts b/quadratic-client/src/app/grid/actions/clipboard/clipboard.ts
index 2e7e433fea..47e9eb22aa 100644
--- a/quadratic-client/src/app/grid/actions/clipboard/clipboard.ts
+++ b/quadratic-client/src/app/grid/actions/clipboard/clipboard.ts
@@ -31,6 +31,7 @@ export const copyToClipboardEvent = async (e: ClipboardEvent) => {
   debugTimeReset();
   const jsClipboard = await quadraticCore.copyToClipboard(sheets.getRustSelection());
   await toClipboard(jsClipboard.plainText, jsClipboard.html);
+  pixiApp.copy.changeCopyRanges();
   debugTimeCheck('copy to clipboard');
 };
 
@@ -111,6 +112,7 @@ export const copyToClipboard = async () => {
   debugTimeReset();
   const jsClipboard = await quadraticCore.copyToClipboard(sheets.getRustSelection());
   await toClipboard(jsClipboard.plainText, jsClipboard.html);
+  pixiApp.copy.changeCopyRanges();
   debugTimeCheck('copy to clipboard');
 };
 
diff --git a/quadratic-client/src/app/grid/sheet/Sheet.ts b/quadratic-client/src/app/grid/sheet/Sheet.ts
index 9ccc21b7f2..a6d2d6f190 100644
--- a/quadratic-client/src/app/grid/sheet/Sheet.ts
+++ b/quadratic-client/src/app/grid/sheet/Sheet.ts
@@ -149,9 +149,14 @@ export class Sheet {
   }
 
   // @returns screen rectangle for a column/row rectangle
-  getScreenRectangle(column: number, row: number, width: number, height: number): Rectangle {
-    const topLeft = this.getCellOffsets(column, row);
-    const bottomRight = this.getCellOffsets(column + width, row + height);
+  getScreenRectangle(
+    column: number | BigInt,
+    row: number | BigInt,
+    width: number | BigInt,
+    height: number | BigInt
+  ): Rectangle {
+    const topLeft = this.getCellOffsets(Number(column), Number(row));
+    const bottomRight = this.getCellOffsets(Number(column) + Number(width), Number(row) + Number(height));
     return new Rectangle(topLeft.left, topLeft.top, bottomRight.left - topLeft.left, bottomRight.top - topLeft.top);
   }
 
diff --git a/quadratic-client/src/app/grid/sheet/SheetCursor.ts b/quadratic-client/src/app/grid/sheet/SheetCursor.ts
index 01877d6cc4..4ceb43da0f 100644
--- a/quadratic-client/src/app/grid/sheet/SheetCursor.ts
+++ b/quadratic-client/src/app/grid/sheet/SheetCursor.ts
@@ -288,4 +288,14 @@ export class SheetCursor {
       return [];
     }
   }
+
+  getRanges(): CellRefRange[] {
+    const rangesStringified = this.jsSelection.getRanges();
+    try {
+      return JSON.parse(rangesStringified);
+    } catch (e) {
+      console.error(e);
+      return [];
+    }
+  }
 }
diff --git a/quadratic-client/src/app/gridGL/UI/UICopy.ts b/quadratic-client/src/app/gridGL/UI/UICopy.ts
new file mode 100644
index 0000000000..fe908d2d64
--- /dev/null
+++ b/quadratic-client/src/app/gridGL/UI/UICopy.ts
@@ -0,0 +1,95 @@
+import { events } from '@/app/events/events';
+import { sheets } from '@/app/grid/controller/Sheets';
+import { DASHED } from '@/app/gridGL/generateTextures';
+import { pixiApp } from '@/app/gridGL/pixiApp/PixiApp';
+import { drawDashedRectangleMarching } from '@/app/gridGL/UI/cellHighlights/cellHighlightsDraw';
+import { getCSSVariableTint } from '@/app/helpers/convertColor';
+import { CellRefRange } from '@/app/quadratic-core-types';
+import { Graphics } from 'pixi.js';
+
+const MARCH_TIME = 80;
+const ALPHA = 0.5;
+
+// walking rectangle offset
+const RECT_OFFSET = 1;
+
+export class UICopy extends Graphics {
+  private sheetId?: string;
+  private ranges?: CellRefRange[];
+  private time = 0;
+  private march = 0;
+  private dirty = false;
+
+  constructor() {
+    super();
+    events.on('changeSheet', this.updateNextTick);
+    events.on('viewportChanged', this.updateNextTick);
+    events.on('transactionStart', this.clearCopyRanges);
+  }
+
+  destroy() {
+    events.off('changeSheet', this.updateNextTick);
+    events.off('viewportChanged', this.updateNextTick);
+    events.off('transactionStart', this.clearCopyRanges);
+    super.destroy();
+  }
+
+  isShowing(): boolean {
+    return !!this.ranges && this.sheetId === sheets.sheet.id;
+  }
+
+  private updateNextTick = () => (this.dirty = true);
+
+  clearCopyRanges = () => {
+    this.clear();
+    pixiApp.setViewportDirty();
+    this.ranges = undefined;
+    this.sheetId = undefined;
+  };
+
+  changeCopyRanges() {
+    const range = sheets.sheet.cursor.getRanges();
+    this.ranges = range;
+    this.time = 0;
+    this.march = 0;
+    this.sheetId = sheets.sheet.id;
+  }
+
+  private draw() {
+    if (!this.ranges) return;
+    let render = false;
+    this.ranges.forEach((cellRefRange) => {
+      const color = getCSSVariableTint('primary');
+      render ||= drawDashedRectangleMarching({
+        g: this,
+        color,
+        march: this.march,
+        noFill: true,
+        alpha: ALPHA,
+        offset: RECT_OFFSET,
+        range: cellRefRange,
+      });
+    });
+    if (render) {
+      pixiApp.setViewportDirty();
+    }
+  }
+
+  update() {
+    if (!this.ranges) return;
+    if (this.sheetId !== sheets.sheet.id) {
+      this.clear();
+      return;
+    }
+    const drawFrame = Date.now() - this.time > MARCH_TIME;
+    if (drawFrame) {
+      this.march = (this.march + 1) % Math.floor(DASHED);
+      this.time = Date.now();
+    }
+    if (drawFrame || this.dirty) {
+      this.clear();
+      this.draw();
+      this.dirty = false;
+    }
+  }
+}
diff --git a/quadratic-client/src/app/gridGL/UI/cellHighlights/cellHighlightsDraw.ts b/quadratic-client/src/app/gridGL/UI/cellHighlights/cellHighlightsDraw.ts
index 6d8a665f59..c30c613bab 100644
--- a/quadratic-client/src/app/gridGL/UI/cellHighlights/cellHighlightsDraw.ts
+++ b/quadratic-client/src/app/gridGL/UI/cellHighlights/cellHighlightsDraw.ts
@@ -61,35 +61,43 @@ export function drawDashedRectangleMarching(options: {
   g: Graphics;
   color: number;
   march: number;
+  noFill?: boolean;
+  alpha?: number;
+  offset?: number;
   range: CellRefRange;
-}) {
-  const { g, color, march, range } = options;
+}): boolean {
+  const { g, color, march, noFill, alpha, offset = 0, range } = options;
 
   const selectionRect = getRangeScreenRectangleFromCellRefRange(range);
   const bounds = pixiApp.viewport.getVisibleBounds();
   if (!intersects.rectangleRectangle(selectionRect, bounds)) {
-    return;
+    return false;
   }
 
-  const minX = selectionRect.left;
-  const minY = selectionRect.top;
-  const maxX = selectionRect.right;
-  const maxY = selectionRect.bottom;
+  const minX = selectionRect.left + offset;
+  const minY = selectionRect.top + offset;
+  const maxX = selectionRect.right - offset;
+  const maxY = selectionRect.bottom - offset;
 
-  g.clear();
+  if (!noFill) {
+    g.clear();
+  }
 
   g.lineStyle({
     alignment: 0,
   });
-  g.moveTo(minX, minY);
-  g.beginFill(color, FILL_ALPHA);
-  g.drawRect(minX, minY, maxX - minX, maxY - minY);
-  g.endFill();
+  if (!noFill) {
+    g.beginFill(color, FILL_ALPHA);
+    g.drawRect(minX, minY, maxX - minX, maxY - minY);
+    g.endFill();
+  }
 
+  g.moveTo(minX, minY);
   g.lineStyle({
     width: CURSOR_THICKNESS,
     color,
     alignment: 0,
+    alpha,
   });
 
   const clamp = (n: number, min: number, max: number): number => {
@@ -132,4 +140,6 @@ export function drawDashedRectangleMarching(options: {
     g.moveTo(minX + DASHED_THICKNESS, clamp(y - DASHED / 2, minY, maxY));
     g.lineTo(minX + DASHED_THICKNESS, clamp(y, minY, maxY));
   }
+
+  return true;
 }
diff --git a/quadratic-client/src/app/gridGL/interaction/keyboard/keyboardViewport.ts b/quadratic-client/src/app/gridGL/interaction/keyboard/keyboardViewport.ts
index 5563e5f147..27c66ddd7b 100644
--- a/quadratic-client/src/app/gridGL/interaction/keyboard/keyboardViewport.ts
+++ b/quadratic-client/src/app/gridGL/interaction/keyboard/keyboardViewport.ts
@@ -68,6 +68,12 @@ export function keyboardViewport(event: React.KeyboardEvent<HTMLElement>): boole
 
   // Close overlay
   if (matchShortcut(Action.CloseOverlay, event)) {
+    // clear copy range if it is showing
+    if (pixiApp.copy.isShowing()) {
+      pixiApp.copy.clearCopyRanges();
+      return true;
+    }
+
     if (gridSettings.presentationMode) {
       setGridSettings({ ...gridSettings, presentationMode: false });
       return true;
diff --git a/quadratic-client/src/app/gridGL/pixiApp/PixiApp.ts b/quadratic-client/src/app/gridGL/pixiApp/PixiApp.ts
index 06c009f991..ad23e14538 100644
--- a/quadratic-client/src/app/gridGL/pixiApp/PixiApp.ts
+++ b/quadratic-client/src/app/gridGL/pixiApp/PixiApp.ts
@@ -13,6 +13,7 @@ import { GridLines } from '@/app/gridGL/UI/GridLines';
 import { HtmlPlaceholders } from '@/app/gridGL/UI/HtmlPlaceholders';
 import { UICellImages } from '@/app/gridGL/UI/UICellImages';
 import { UICellMoving } from '@/app/gridGL/UI/UICellMoving';
+import { UICopy } from '@/app/gridGL/UI/UICopy';
 import { UIMultiPlayerCursor } from '@/app/gridGL/UI/UIMultiplayerCursor';
 import { UIValidations } from '@/app/gridGL/UI/UIValidations';
 import { BoxCells } from '@/app/gridGL/UI/boxCells';
@@ -67,6 +68,7 @@ export class PixiApp {
   imagePlaceholders!: Container;
   cellImages!: UICellImages;
   validations: UIValidations;
+  copy: UICopy;
 
   renderer!: Renderer;
   momentumDetector: MomentumScrollDetector;
@@ -93,6 +95,7 @@ export class PixiApp {
     this.viewport = new Viewport();
     this.background = new Background();
     this.momentumDetector = new MomentumScrollDetector();
+    this.copy = new UICopy();
   }
 
   init() {
@@ -157,6 +160,7 @@ export class PixiApp {
     this.gridLines = this.viewportContents.addChild(new GridLines());
     this.boxCells = this.viewportContents.addChild(new BoxCells());
     this.cellImages = this.viewportContents.addChild(this.cellImages);
+    this.copy = this.viewportContents.addChild(this.copy);
     this.multiplayerCursor = this.viewportContents.addChild(new UIMultiPlayerCursor());
     this.cursor = this.viewportContents.addChild(new Cursor());
     this.htmlPlaceholders = this.viewportContents.addChild(new HtmlPlaceholders());
diff --git a/quadratic-client/src/app/gridGL/pixiApp/Update.ts b/quadratic-client/src/app/gridGL/pixiApp/Update.ts
index a95048619b..e85e8b6f78 100644
--- a/quadratic-client/src/app/gridGL/pixiApp/Update.ts
+++ b/quadratic-client/src/app/gridGL/pixiApp/Update.ts
@@ -103,6 +103,8 @@ export class Update {
     pixiApp.validations.update(pixiApp.viewport.dirty);
     debugTimeCheck('[Update] backgrounds');
     pixiApp.background.update(pixiApp.viewport.dirty);
+    debugTimeCheck('[Update] copy');
+    pixiApp.copy.update();
 
     if (pixiApp.viewport.dirty || rendererDirty) {
       debugTimeReset();