Windows or Firefox changes xmp to xml when downloading

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1

Starting today when I click on an xmp file to download it, the extension gets changed to xml in the download box. I am using Windows 10 and Firefox. Anyone else having this problem?

2

You are quite right. The link is an xmp but when I save as Firefox wants to save it as xml. Have you tried changing the extension and seeing whether it contains the same contents?

Are dt xmps xml-friendly triggering Firefox’s desire to change it to xml?

3

I assumed they would work if I changed it back to xmp, but I haven’t tested one yet. I downloaded a bunch yesterday, no problem. Suddenly today, problem.

4

I don’t like recent Firefox changes. E.g. pop up notice is gone; was useful to detect them and quickly allow them on the individual basis without allowing all. E.g. it keeps on crashing on my phone.

5

Its annoying, but XMP is XML. Just change the extension.

6

Super pain in the neck.

7

You could try adding a MIME entry to Firefox to see if it overrides this behaviour.

8

First step: learn what a MIME entry is. I’ll work on that.

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9

Could it be the upgrade?

Maybe the server is sending the content type as text/xml and Firefox is being too smart.

I mean, in previous version the server maybe didn’t set the “right” content type header.

/cc @darix

10

https://www.iana.org/assignments/media-types/media-types.xhtml

11

I found an example:

You can simply create the registry entries for those types for your code to read

in regedit go to HKEY_LOCAL_MACHINE\Software\Classes (the central part of HKCR)
right click Classes, New Key - call it .pdf
right click on the right hand side, New String - "Content Type", "application/pdf"

But I don’t know what I would do to make Firefox recognize the xmp file type and stop changing it. I have a post in the Firefox support community. I think it was the Firefox update that caused this.

I have tested a sidecar that I changed from xml to xmp, and it worked.

I download all the xmps in each Play Raw that I look at and work through all of them. I have a programmable keyboard and have a macro now that once I change the file type to all files, the macro changes the name. So that has made this less annoying.

12

It takes me a while to jog the noggin. No need to play with the registry.

1 Go to %AppData%\Mozilla\Firefox\Profiles.
2 Choose the profile folder that is currently in use and edit handlers.json.
3 Add xmp like so and remember to save as UTF-8.

        "text/xml": {
            "action": 2,
            "extensions": [
                "xml",
                "xsl",
                "xbl",
                "xmp"
            ],
            "ask": true
        },

4 Restart Firefox.

13

I finally smartened up and tried downloading with Edge. It kept the file as an xmp, so it is not Windows.

14

I have tried modifying the file as indicated. It follows a different format, everything in one line. I may not have added the new information properly. What happens is upon restarting Firefox, it marks the file as corrupt and creates a new one. I would upload the file, but pixls will not allow it. This is the tail end of the text with my addition:

“mailto”:{“action”:4,“handlers”:[null,{“name”:“Yahoo! Mail”,“uriTemplate”:“https://compose.mail.yahoo.com/?To=%s"},{“name”:“Gmail”,“uriTemplate”:“https://mail.google.com/mail/?extsrc=mailto&url=%s”}]}}},“text/xml”:{“action”:2,“extensions”:[“xml”,“xsl”,“xbl”,“xmp”],"ask”: true}

15

This part is essential reading

Perhaps, you also have to be careful about newline carriages and add a empty last line. I suggest using apps like Notepad++, etc.

I “tidied” the json. Plenty of websites can do that for you.

16

In the meantime, I received a reply on Firefox support that points out an issue with “the server is not sending a Content-Type header with the file…” Perhaps this is something that can be changed, @paperdigits. A Firefox add-on was also offered as a remedy.
https://support.mozilla.org/en-US/questions/1319324

This was never an issue until a couple days ago. Only @afre has responded saying he had the issue until he fixed it apparently. Why just us?

17

I did that first, and it was rejected. I removed my addition and saved it as a UTF-8, and it was rejected again. I saved it as a text file, and without my addition, and it was accepted. I’ll try Notepad. You said you tidied the json. I don’t understand.

I’ll have to get it first.

18

First web result for key words “tidy json”: Tidy JSON Online. Try it.

19

@afre: Tidied, changed with Notepad++, saved as UTF-8. No joy :frowning_face:

   "mailto": {
        "action": 4,
        "handlers": [
            null,
            {
                "name": "Yahoo! Mail",
                "uriTemplate": "https://compose.mail.yahoo.com/?To=%s"
            },
            {
                "name": "Gmail",
                "uriTemplate": "https://mail.google.com/mail/?extsrc=mailto&url=%s"
            }
        ]
    }
},
"text/xml": {
    "action": 2,
    "extensions": [
        "xml",
        "xsl",
        "xbl",
        "xmp"
    ],
    "ask": true
}

}
Never mind. The add-on fixed it.

20

So Firefox is the culprit. I downloaded CR3 and NEF yesterday. I got MP4 and TIFF. Had to rename them back to CR3 and NEF.

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