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Sometimes I need to open XML files on my PC or in a network folder. If I open the file in the first tab in Firefox, it displays a neat and formatted rendering that makes it easier to read. However, if I open yet another tab, it displays a sequential text file that's difficult to read. How can I apply the style of the first tab to all open tabs? I've attached explanatory images (I hope). The second image shows how I'd like the XML file to always be displayed, regardless of the tab's position. Firefox 149.0.2 on windows 11

Its simple but I dont get it and firefox used to be able to it is simply like any website you have a file of anything you can slip it in just like Chrome edge opera fire fox to get it the file you have to like go in like not automatc more like MANUALLY

Why can't Firefox open .mht email extensions within its default browser? It has never done so to my knowledge. They always point to Internet Explorer or Microsoft Edge.

Often an email may not display images correctly and the ability to open them in a web browser is offered, "If there are problems with how this message is displayed, click here to view it in a web browser." This is certainly a development addition when people view their Gmail from Firefox or use Outlook. Not everybody uses APPS. People who don't want Microsoft Edge watching every move they make have made effective permanent changes in removing the deep embedded PUP by Microsoft.

Firefox version: 148.0

2025-09-04

I Am REOPENING the Topic from the following link , because it is NOT Resolved ...

"Opening local HTML files." LINK: https://support.mozilla.org/en-US/questions/1466164

The Original Article indicated that someone could not open "local .html files" that would be on the phone , such as using firefox , to open a "local .html file" that was located at "phone/folder/filename.html" ;

In the link above , the "Response" from the "moderator" called "Paul" said ...

[QUOTE] Hi It is currently not possible to open saved HTML files in Firefox for Android. There are no plans to allow this in the near future. [UNQUOTE]

That response is blatantly FALSE .

The PREVIOUS version of Firefox , namely "fennec" , CAN open "local .html files" , even at this very moment in time .

When using the PREVIOUS version of "Firefox for Android" , namely "fennec" , a "local .html file" AND a "local .txt file" could EACH be opened by CLICKING the "local file" , and then the "phone" would "DISPLAY A PROMPT" to open the "local file" using the phone's native "HTML VIEWER" , or using "FIREFOX" .

The PREVIOUS version of Firefox , CAN also upload images to "forums" .

This can easily be verified by uploading a discontinued version of "fennec" from the following link , or elsewhere ... https://download.mozilla.org/?product=fennec-latest&os=android&lang=multi ( The Link is found at ... "How can I download a previous version of Firefox for Android?" LINK: https://support.mozilla.org/en-US/questions/1300966 )

When using the CURRENT version of "Firefox for Android" , namely "fenix" , the "phone" just opens the "local .html file" or "local .txt file" using the phone's native "HTML VIEWER" .

The CURRENT version of "Firefox for Android" , namely "fenix (v110)" , will NOT Upload "local images" to forums , such as when an "upload button" is pressed on a "forum" , something that "fennec" can do ; and yes , the phone's "permissions" was granted to firefox to access the phone's "storage" .

As a side note , the previous "fennec" also Displayed a "button" at the top of a "page" to show a "simplified page view" , for those sites that offered "simplified page views" , something the "fenix" does not offer .

Is it a "BEHIND THE SCENES" Mystery , about why the previous "fennec" could do all those things , while the "new" "fenix" can not ?

P.S. The ONLY reason I changed FROM "fennec (v68)" , literally about TWO WEEKS AGO , to "fenix (v110)" , was because some "sites" were saying "browser outdated" , or some "sites" were displaying "jumbled pages" , presumably because the "sites" were "trying" to do more "fancy javascript" and other "unnecessary bling" .

PROBLEM : "fenix" will not open "local .html files" PROBLEM : "fenix" will not open "local .txt files" PROBLEM : "fenix" will not "upload images" to "forums" . SOLUTION: look at the PREVIOUS "fennec" , and then fix the CURRENT "fenix" .

To those whom it concerns , I Thank you for trying .

2025-09-04

While using Outlook.com email in my Firefox browser, I attach a zip file to send to someone.

They reported that the zip file is empty. This happened two more times.

I confirmed that the zip file that I was uploading from my hard drive did indeed have files included.

I then downloaded the attached zip file from the email in my "Sent" folder. It was empty.

When I tried using "Outlook.com" in the Chrome browser, I did not have the same problem.

I'm using Firefox ESR version 128.9.0, on Windows 10.

(The downloaded empty zip file also had "utf-8" added to the file name - that problem is addressed in other tickets and is being worked on. I am not asking about that.)

Suddenly every doc I download or preview is COVERED by something saying I "can now read and sign docs in Firefox" -- and I can't remove this popup -- or even relocate it so that I can SEE the doc I am trying to read.

Is this from my latest firefox upgrade?  Can I undo it?  

The whole popup thing is not even visible, so I can't find something to scroll down and say yes or no. Similarly I tried to play along with it and create a signature. I did that and clicked a "save signature" but again I cannot even see the whole thing so I cannot save it and get out of it. It won't let me take a screenshot so I can show you....

"Please create a new version of the browser app that supports the ability to use FileSystemAPI on directories, this is essential for working with a BeatBuddy project and SD cards that are saved on my computer using the online editor."

When i go into file explorer on computer running windows 11 all files were opening in firefox. Even files i scanned into my computer from my printer. I tried to change default to notepad. When i did, all files including images changed to unreadable computer script. Any fix?

just trying to remember howto set up Linux with Firefox ,Arduino, and python, python Serial Library plus all the other under lining principles of Ubuntu Extensions , Extensions ! I have a way's to go  !

When viewing a document on Ancestry there are blank squares such that I can read the whole document. This only happens on Fire Fox. When I use Google Chrome I can read the whole document. How do I fix this on Fire Fox.