### ImageMagick version

7.1.1-24

### Operating system

Windows

### Operating system, version and so on

Windows 11

### Description

The APNG format specifier cant be used on images from the web.

### Steps to Reproduce

ImageMagick does support urls:

```
magick identify https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
```

But specifying it as an apng makes ImageMagick unable to open the image:

```
magick identify apng:https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
```
```
identify: unable to open image 'https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png': Invalid argument @ error/blob.c/OpenBlob/3572.
```

### Images

https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
APNG specifier cant be used on images from the web
This is a GitHub Issue
repo:ImageMagick
owner:ImageMagick
Title : APNG specifier cant be used on images from the web
Issue date:

--- start body ---
### ImageMagick version

7.1.1-24

### Operating system

Windows

### Operating system, version and so on

Windows 11

### Description

The APNG format specifier cant be used on images from the web.

### Steps to Reproduce

ImageMagick does support urls:

```
magick identify https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
```

But specifying it as an apng makes ImageMagick unable to open the image:

```
magick identify apng:https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
```
```
identify: unable to open image 'https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png': Invalid argument @ error/blob.c/OpenBlob/3572.
```

### Images

https://em-content.zobj.net/source/microsoft-teams/363/grinning-face_1f600.png
--- end body ---
