diff --git a/avatar/src/index.js b/avatar/src/index.js
index 0b6fb3f8..47135a13 100644
--- a/avatar/src/index.js
+++ b/avatar/src/index.js
@@ -158,8 +158,15 @@ You can't use this directly unfortunately since all requests are signed and may
       );
     }
 
-    const size = searchParams.get("size");
-    const resizeToTiny = size === "tiny";
+    const allowedWidths = [26, 34, 42, 52];
+    const requestedSize = searchParams.get("size");
+
+    let width = null;
+    if (requestedSize === "tiny") {
+      width = 32;
+    } else if (allowedWidths.includes(Number(requestedSize))) {
+      width = Number(requestedSize);
+    }
     const format = searchParams.get("format") || "webp";
     const validFormats = ["webp", "jpeg", "png"];
     const outputFormat = validFormats.includes(format) ? format : "webp";
@@ -245,7 +252,7 @@ You can't use this directly unfortunately since all requests are signed and may
         });
 
         const bgColor = stringToColor(actor);
-        const size = resizeToTiny ? 32 : 128;
+        const size = width ?? 128;
         const svg = `<svg width="${size}" height="${size}" viewBox="0 0 ${size} ${size}" xmlns="http://www.w3.org/2000/svg"><rect width="${size}" height="${size}" fill="${bgColor}"/></svg>`;
         const svgData = new TextEncoder().encode(svg);
 
@@ -261,11 +268,11 @@ You can't use this directly unfortunately since all requests are signed and may
 
       // Fetch and optionally resize the avatar
       let avatarResponse;
-      const cfOptions = outputFormat !== "webp" || resizeToTiny ? {
+      const cfOptions = outputFormat !== "webp" || width ? {
         cf: {
           image: {
             format: outputFormat,
-            ...(resizeToTiny ? { width: 32, height: 32, fit: "cover" } : {}),
+            ...(width ? { width, height: width, fit: "cover" } : {}),
           },
         },
       }: {};