diff --git a/src/util.js b/src/util.js
index 93d48b4488def00cfa1641341435ea76516d9741..727ad1b3e6e668a8b34c8e544613710184cc9cd1 100644
--- a/src/util.js
+++ b/src/util.js
@@ -329,7 +329,9 @@ export function drawIconHalo(
     2 * haloWidth * spriteImageData.pixelRatio + spriteImageData.height,
   ];
   const imageCanvas = createCanvas(imgSize[0], imgSize[1]);
-  const imageContext = imageCanvas.getContext('2d');
+  const imageContext = imageCanvas.getContext('2d', {
+    willReadFrequently: true,
+  });
   imageContext.drawImage(
     spriteImage,
     spriteImageData.x,
@@ -379,7 +381,9 @@ function smoothstep(min, max, value) {
  */
 export function drawSDF(image, area, color) {
   const imageCanvas = createCanvas(area.width, area.height);
-  const imageContext = imageCanvas.getContext('2d');
+  const imageContext = imageCanvas.getContext('2d', {
+    willReadFrequently: true,
+  });
   imageContext.drawImage(
     image,
     area.x,