Who can help answer why this is about html2canvas

[cyfung1031]

toDataURL: Returns a Base64 encoded string.
toBlob: Returns a Blob object.

toDataURL can be slower and memory intensive for large images because Base64 encoding increases the size of the data by approximately 33%.
toBlob is typically more efficient for handling binary data directly.

Use toDataURL when you need to embed the image in HTML/CSS or send it as part of a text-based format.
Use toBlob when you need to upload the image to a server or perform operations on the binary data.

For the measurement, it is incorrect.
You are comparing sync function and async function.

sync function can use all the resource and power to do the process
async function would not

If you want to compare A and B. It must be apple to apple. orange to orange. don't compare sync function to async function.