Skip to main content

Questions tagged [file-extension]

A file extension is an optional alphanumeric identifier which comes after the last found period in a file name. A file extension itself does not define what type of data is in a file, but it does give a hint as to what is *supposed* to be in the file.

Filter by
Sorted by
Tagged with
0 votes
1 answer
23 views

Does changing the program that a certain file extension opens with change the file type somehow?

I have a .pdf file of my CV and since I don't have any programs that are made for reading/editing PDFs, I set it so that .pdf files open with Chrome by default. Now, when I go to the Properties ...
cloud's user avatar
  • 11
0 votes
0 answers
7 views

Can I specify additional text/code file extensions for SharePoint Online? [migrated]

My workplace uses One Drive, which I usually access through the SharePoint web interface. I can of course open files in Microsoft formats, such as .pptx and .docx through the web interface. Microsoft'...
Ellen Spertus's user avatar
0 votes
1 answer
24 views

How to allow the download of files with custom extensions from a Plesk server?

I have a dedicated Plesk server with several domains. In one of them I want to make available a file called, say, "file.db" If I try to download that file from a web browser, I get a 403 ...
OMA's user avatar
  • 1,730
0 votes
0 answers
27 views

Program associated with custom file extension isn't receiving command line arguments

When Python is first installed, the extension .py is associated with C:\windows\py.exe, which runs the Python script. Now I do a lot of Python development, so I set it to open with my IDE instead, but ...
xenon134's user avatar
0 votes
1 answer
134 views

Does changing an .exe's file extension to .old make it no longer executable?

Some programs leave their old .exe files in place when updating. For instance, abc1.2.3.exe is left there when abc1.2.4.exe is installed. It's still useful to have the old file around for easy ...
MountainMan's user avatar
  • 5,858
1 vote
2 answers
2k views

APPINSTALLER File (.appinstaller) - Is there a way to extract or convert to EXE.MSI

I have an (.appinstaller) (file) application that I would like to be able to convert it to a traditional msi/exe package... I cant seem to find anything out there... Anyone able to help with this ...
Gino M's user avatar
  • 25
1 vote
1 answer
236 views

How can I convert text files with an unusual extension (.1 .2 .3 .4) into an image file?

Duplicate file names aren't saved as abc (1).jpeg, but instead abc.jpeg.1. They're inaccessible as an image; they're just text instead. I've tried a bunch of websites and so far only convertio has ...
koolcat's user avatar
  • 13
3 votes
2 answers
3k views

How to assign an icon to a specific file extension in Windows 11?

I added a new file extension to the windows compressed file using the following regedit script and it works perfectly (mostly) Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\.zab] @="...
Anna's user avatar
  • 31
0 votes
2 answers
892 views

How to change default app of .html extension in Windows 11?

The .html file extension does not show in the default apps settings. Here's the screenshot in default apps settings Now I tried searching for a solution and tried a program named 'FileTypeDiag' but I ...
Christian Villanueva's user avatar
0 votes
2 answers
183 views

MS Project saves to 2007 format, option to change is grayed out

I've got a user who has MS Project. This user noticed his file opened in compatibility mode. The file was saved in the 2007 format. I went into project settings >> save >> save files in ...
JavaValhalla's user avatar
1 vote
1 answer
186 views

Is there a simple way to specify whether a webp is lossy (like jpg), lossless (like png), or animated (like a gif)?

For example, is it possible to name something "file.lwebp" to explicitly designate that it is lossy, or "file.awebp" to designate it is animated? Or is there no such method, and ...
chausies's user avatar
  • 151
0 votes
1 answer
847 views

How to Rename Multiple Files at Once in Windows

So i'm trying to rename few videos in separate folders to same name and i did it without using cmd, so i just used the search box on the right side And searched to as mp4 files and named them to &...
Zolboo B's user avatar
1 vote
1 answer
320 views

How to Sort and Move Files Based on their Extensions on Windows

I'm trying to sort and move files based on their extensions within Windows, and am following this tutorial using: @echo off for %%a in (".\*") do ( if "%%~xa" NEQ "&...
Zolboo B's user avatar
1 vote
1 answer
975 views

How to associate "open with" programs exactly by file extension rather than file content format?

I use a system with Xubuntu 22.04 LTS. Now Thunar, the file explorer, does include an option where you can right-click a file and choose the (default) application to open a file type with. Problem is ...
Keyboard Penman's user avatar
0 votes
2 answers
638 views

Unable to remove entries in Windows File Explorer's New context menu which have no Registry ShellNew keys

On Windows File Explorer, I like to keep the New right-click context menu decluttered by removing most entries except those that I specifically want. Thus, in the Registry, I delete (replacing "...
WingedKnight's user avatar
1 vote
1 answer
1k views

Register a file extension for all users

Lets say, I belong to Administrators in Windows 10 and I want: I. All other existed users. Users not created yet. When anyone from the above list press "enter" on a PDF file, then PDF ...
Chameleon's user avatar
  • 217
0 votes
3 answers
293 views

Windows 10: how to prevent File Explorer from opening .IMG files?

Dear fellow Windows warriors, I've stumbled across an interesting problem. A user in fairly pristine Windows 10 has received a suspicious file by e-mail, and due to momentary lack of concentration, ...
frr's user avatar
  • 293
1 vote
1 answer
307 views

Something overwriting some settings set in HKCR for image files

What I'm trying to achieve: Change the file type description that is shown in the explorer file type column, when creating a new file etc. What I tried to do but failed: Until now, I have been doing ...
thisistemporary's user avatar
2 votes
3 answers
4k views

Slow Context menu in windows 11

Context menu in W11 is so sluggish (specially on video files) i uninstalled everything that i suspected to be the cause and used the tool called "This Is Windows 11" to uninstall all the ...
Kareem's user avatar
  • 93
0 votes
0 answers
83 views

How can I add files to the hidden files list in Windows 10 locally without modifying the file?

If anybody else has used AutoCAD before, I'm sure you're well aware that it generates an enormous number of backup files (.bak). This is great and useful because it's a bloated program prone to ...
audiFanatic's user avatar
1 vote
2 answers
103 views

Unknown file extension, nothing helps. Help please?

All i know it is some kind of texture files, either contains textures of layers of something. Nothing can open it, identifiers say it's .abr but none of the Photoshop versions could open it. Not CS2,...
Adam's user avatar
  • 13
0 votes
1 answer
2k views

Setting file extensions from uppercase to lowercase in Windows by default

I'm wondering if it's possible to set by default the lowercase file extension in Windows 10. When I create a new txt file, the extension is uppercase TXT. How can I set the option lowercase by default?...
Gennaro Arguzzi's user avatar
2 votes
1 answer
271 views

What file extension do OpenOffice Dictionary files have?

I have a program that supports importing OpenOffice Dictionary files for use with its own spell checker, which I would like to do since the language I want to write in isn't available as a built-in ...
Newbyte's user avatar
  • 146
0 votes
1 answer
342 views

Batch script remove last specific file extension or use special replacement rules

How do I setup a .bat script to remove and replace a specific file extension from all files in current folder with the following replacement logic? Simply what I want is always remove last extension ...
taraz's user avatar
  • 13
0 votes
5 answers
1k views

Windows CMD - How to append .txt to the names of all no-extension files in a folder and its nested subfolders?

I copied all my files from Ubuntu to a new Windows 10 computer. Many of these files (literally thousands of them) are plain text files without extensions ... Every time I try to open one of these ...
Fred Flintstone's user avatar
1 vote
1 answer
39 views

Need assistance with strange progressive numbering on file extension

In this image: you can see that I was using Powershell to count the number of files by type, however, I noticed something unusual in the counts. That is, there are file extensions with progressive ...
Yndrel Bösch's user avatar
2 votes
0 answers
457 views

How to view file extension in macOS 'Save As' dialogue box in web browser

In macOS (Monterey), when I save files in a web browser (ex. Chrome or Safari), I cannot view the file extension in the save dialogue box. This means I must download the file before finding out the ...
Mac Enthusiast's user avatar
0 votes
3 answers
2k views

Many video file extensions not registered by VLC and unable to register them manually

tl;dr A recent installation of VLC VideoLAN on freshly installed Windows 11 revealed that many popular video file extensions are not registered with this player (many, many others are). I am unable to ...
trejder's user avatar
  • 11.4k
0 votes
1 answer
75 views

Prove which application is used for opening log files: assoc and ftype seem unreliable on Windows-10

My customer has a problem with logfiles, which become too large: on their PC (windows-Server 2016) Notepad.exe is used as the application for opening such files. I've altered this to Notepad++.exe, ...
Dominique's user avatar
  • 2,283
1 vote
1 answer
699 views

What is the autosave powerpoint file extension

Following a windows PC crash, when asked if I wanted to save an autosave powerpoint presentation, I accidentally clicked no. All my work was lost and the autorecover folder C:\Users\<user>\...
SeanJ's user avatar
  • 183
0 votes
0 answers
45 views

Audit Request for Complete List of Recognized Filename Extensions in FFMPEG FFPROBE FFPLAY

I understand FFMPEG has a list of supported codecs and some users will be tempted to dismissively handwave my request by telling me to do my own research on codecs. Those responses will be treated ...
raccoon's user avatar
  • 115
0 votes
0 answers
120 views

Can someone help me open this .file file?

I found an old file of mine and I'm wondering if someone could identify its extension and help me open it. Every time I open it it opens Notepad with `½18f%y_W}ÿuìGŽu–7Sƒ²+kÝqéÚ‘…ÓÎ,™ÂŠþ5WDuùxq­*...
Cole's user avatar
  • 11
0 votes
2 answers
824 views

Windows 10: how to always use this app to open files w/o filename extension?

When you open file w/ extension for the 1st time you see this: When you open file w/o extension for the 1st time you see this: So, where is "Always use this app to open files w/o filename ...
pmor's user avatar
  • 368
3 votes
1 answer
6k views

What are the VMware's vm.scoreboard files?

Basically the same ask as from here: I see a few new files beside usual guest file: vm.scoreboard vm-1.scoreboard vm-2.scoreboard etc. What are they? The answer there doesn't make sense to me: ...
xpt's user avatar
  • 8,851
0 votes
1 answer
956 views

Is it possible to configure Outlook in a way that it opens or previews any unknown file in a text editor (like VS Code or Notepad)

At times, I get emails with files that have an unknown file extension (for example .x-y-z). Because this extension is unknown to Outlook (and virtually everyone on the planet), I can neither open the ...
René Nyffenegger's user avatar
0 votes
1 answer
25 views

Is it possible to entirely replace one app from another in all defaults?

Let us say I want to replace PowerPoint with another presentation software for all the extensions it is currently the default application (.pptx,.ppt,.ppsx, etc.). Is it possible to do that all at ...
Martund's user avatar
  • 101
0 votes
1 answer
185 views

Is it ok to deselect these file types in advanced indexing options

Every single file type is selected in my indexing options for my Windows 10 PC. Only some of them are selected to index file contents as well, but they're all indexed at the very least with file ...
Mark Deven's user avatar
  • 1,660
2 votes
2 answers
347 views

How to associate a command with files that have no extension (Regedit)

I have several processes that generate files with no extension at all and would like to add a custom context menu menu (i.e. be able to right click on them and select 'open in Notepad' or 'make .txt ...
Martin's user avatar
  • 1,936
1 vote
2 answers
996 views

Audio Conversion through change of file extension (E-AC3)

Not sure if this i the right place to ask my question but I'll give it a go. I extracted an E-AC3 Audio track with MKVExtractGUI. The output file I get was .eac3. Another tool I used says it supports ...
AlphaInc.'s user avatar
  • 189
0 votes
1 answer
1k views

Detecting the type of a media file [duplicate]

How do I detect the file extension of a media file missing its file extension? I accidentally removed it. Self-Answer. The question has been asked already here and here, but the questions have been ...
Nils Lindemann's user avatar
0 votes
1 answer
806 views

Right Click + New XLSX Workbook Results In "Excel cannot open the file because the file format or extension is not valid."

Lately I have been having an issue that seems to have happened quite out of the blue where if I go into a folder from File Explorer to create a new .xlsx workbook using a right-click I will create a ...
GrayLiterature's user avatar
0 votes
1 answer
284 views

How do you create your own filename extension that works on Windows 10?

I created a .pdf file that I called dhwd7486.pdf, because I want to create something great (this is included), I renamed the file extension into .unused (cuz I use it occasionally), but I thought it ...
IDK's user avatar
  • 1
0 votes
0 answers
27 views

What are longest extension names functioning in actual programs? [duplicate]

I'm writing piece of code detecting file extensions and I was getting quite a lot of garbage like . Jones - Some Document Title just because file name was starting with Dr. Jones. So I decided to put ...
Lapsio's user avatar
  • 820
3 votes
2 answers
2k views

How can I open .dictionary files on OSX?

I'd like to have a look at the files that the Dictionary App that comes with macOS uses. I was able to locate the files, they're of the .dictionary format. How can I open them, if at all?
userjmillohara's user avatar
3 votes
2 answers
3k views

How to change .vhd file association to open with Windows Explorer?

I'm having an issue with .vhd files not opening with Windows Explorer liek the way .vhdx does. Before it was just unrecognized, now I've accedentally change it to Adobe Acrobat. I've tried changing it ...
GhostRavenstorm's user avatar
0 votes
1 answer
491 views

In Windows, what are the purposes of file extensions?

As far as I know, in Linux filename extensions don't have any special meaning to the operating system. It helps users to identify the file, of course, but the OS itself simply does not care about it (...
yyyyyyyan's user avatar
  • 101
0 votes
1 answer
97 views

Opening a .zbd file?

I have a .zbd file with sensitive information on it. I have downloaded the ZoomBrowser from Canon, it does not recognize it as a file. I downloaded the Zebedee Secure Tunnel, but that just creates a ...
Mark Saluta's user avatar
0 votes
1 answer
224 views

Double extension file

i don't know from where I got this file in my computer's temp folder C:\USERS\xxxxxxxxxx\APPDATA\LOCAL\TEMP\TMPE8FE.TMP.BAT is it some kind of malware? if yes, then how should i resolve this.
rapso's user avatar
  • 1
3 votes
1 answer
70 views

Identifying old files types

I have three files with these extensions ".mrf, .md5, .ptr" that were created in 2009, 2007 and apprx. 2012 respectively. I know that file types could be different than the extension. For example, ...
Kalimah's user avatar
  • 131
0 votes
1 answer
2k views

Anaconda can't launch python script with shebang line in Windows

I have an anaconda installation in windows that I think used to be able to run python scripts with shebang lines like: #!/usr/bin/env python print("hello python") at a prompt without typing "python" ...
Eli S's user avatar
  • 101

1
2 3 4 5
7