separate image conversions

src/seqta/utils/imageConversions.ts

@@ -0,0 +1,19 @@
+export function base64toblobURL(base64: string) {
+  // Extract base64 data from the data URI
+  const base64Index = base64.indexOf(',') + 1;
+  const imageBase64 = base64.substring(base64Index);
+
+  // Convert base64 to blob
+  const byteCharacters = atob(imageBase64);
+  const byteNumbers = new Uint8Array(byteCharacters.length);
+  for (let i = 0; i < byteCharacters.length; i++) {
+    byteNumbers[i] = byteCharacters.charCodeAt(i);
+  }
+  const byteArray = new Uint8Array(byteNumbers);
+  const blob = new Blob([byteArray], { type: 'image/png' });
+
+  // Convert blob to blob URL
+  const imageUrl = URL.createObjectURL(blob);
+
+  return imageUrl;
+}