canvas.toBlob()和canvas.toDataURL是否正在压缩PNG?

canvas.toDataURL

当我尝试获取图像时,出现以下错误: Error: cURL error 61: Unrecognized content encoding type. libcurl understands deflate, gzip, br content encodings

然后,我使用以下方式将其导出为PNG:

const dataURL = canvas.toDataURL({
    width: canvas.width,
    height: canvas.height,
    left: 0,
    top: 0,
    format: 'png'
})

async function uploadPNG(dataURL, filePath) {
  const buf = Buffer.from(dataURL.replace(/^data:image\/\w+;base64,/, ""),'base64')

  const uploadParams = {
    Bucket: bucketName,
    ContentType: 'image/png',
    ContentEncoding: 'base64',
    Body: buf,
    Key: filePath
  }

  return await s3.upload(uploadParams).promise()
}

https://s3.eu-central-1.amazonaws.com/cdn.blankt.com/product/s/AY6AJSHMXnf2ReCZOu.png

以下是该API请求的一部分:

{
  "name": "AY6AJSHMXnf2ReCZOu",
  "type": "variable",
  "regular_price": "9.90",
  "sku": "AY6AJSHMXnf2ReCZOu",

  ...

  ],
  "images": [
    {
      "src": "https://s3.eu-central-1.amazonaws.com/cdn.blankt.com/product/s/AY6AJSHMXnf2ReCZOu.png"
    }
  ],
  "attributes" : [
    {
      "name"      : "Size",
      "variation" : true,
      "visible"   : true,
      "options"   : [ "A3", "A4", "A5" ]
    }
  ]
}

这个问题似乎只出现在我尝试使用API上传图像时,如果我手动下载并上传图像到WooCommerce,就没有问题。