HTML src attributes & File names are mismatched

Problem

When using this extension to retrieve my website https://polyapp.tech I encountered a problem with the downloaded images. The image URLs and other blobs on my website are very unusually formatted: https://polyapp.tech/blob/assets/AdvEblIPeH4YqkvzwwzM/Custom%20Computer%20Programming%20Services_Website%20Builder_vzIHXFJTaafUaotePCHFNZeDh_BodyBlobtgVDgEXakrysXdBB6uNuOzt47

When downloaded, this image is saved with an extension, ".jpg", and also the %20 characters are converted to spaces when saving the file.

Is this intended? I think this is a good thing since it makes the file easier to open on the destination computer and the file name easier to read.

Despite the benefits, there is now a problem when I transfer the file and try to serve it with a simple web server in Go:

package main

import (
    "net/http"
)

func main() {
    http.Handle("/", http.FileServer(http.Dir("./polyapp.tech")))
    http.ListenAndServe(":3500", nil)
}

Although most of the page loads, the images do not:

The problem is a mismatch in the easy to read file name which is downloaded by this extension and the HTML "src" attribute in the downloaded file which is still using the harder-to-read file name which does not contain the ".jpg" extension.

up209d / ResourcesSaverExt

HTML src attributes & File names are mismatched #40

Problem

Suggested Solution