Chrome extensions: how to get image data?

Question

assembler

How to get the image data of the picture on which the context menu was called (for subsequent sending to a third-party site)? I'm interested in getting "data", not the url of the picture.

Answer 1

Go through the digits, writing down the value of each digit. If it were hexadecimal then it would be possible to get by with bit shift and mask operations.
Find the remainder of division by 10 , write the character as the value of the character "0" plus the value of the remainder.
Convert the memory address for writing the string down. Then divide by 10 if it is greater than zero then repeat the cycle otherwise exit.

Answer 2

data to base64 ?

const toDataURL = url => fetch(url)
  .then(response => response.blob())
  .then(blob => new Promise((resolve, reject) => {
    const reader = new FileReader()
    reader.onloadend = () => resolve(reader.result)
    reader.onerror = reject
    reader.readAsDataURL(blob)
  }))


toDataURL('https://www.gravatar.com/avatar/d50c83cc0c6523b4d3f6085295c953e0')
  .then(dataUrl => {
    console.log('RESULT:', dataUrl)
  })