File Name Extension

How to Show and Change a File Name Extension in Vista

information   Information
A file name extension is a set of characters added to the end of a file name that identifies the file type or format which determines what program should open it. This will show you how to Hide or Show and Change file extensions in Vista.
Note   Note
This will not work for the .lnk shortcut file extension since you cannot see it by default. For how to see this file extension, see: File Name Extension





OPTION ONE
How to Show or Hide File Name Extensions

1. Open Folder Options.​
2. To Show File Name Extensions
A) Uncheck Hide extensions for known file types. (See screenshot below step 4)​
B) Go to step 4.​

3. To Hide File Name Extensions
A) Check Hide extensions for known file types.​

4. Click on OK.​
Hide_Extensions.jpg






OPTION TWO
How to Change a File Name Extension

1. Make sure you have Folder Options set to show file name extensions. (See step 2 in STEP ONE above)​
2. Right click on the file and click on Rename. (See screenshot below)​
Rename1.jpg

3. Press the right arrow key once. (See screenshot below)​
Right_Arrow_Key.jpg

4. Press the Delete key until the file name extension is deleted. (See screenshow below)​
Delete_Key.jpg

5. Type in the new file name extension you want to use and press Enter. (See screenshot below)​
NOTE: I used the BAT extension as example here for batch files.
Change.jpg

6. Click on Yes to change the file name extension. (See screenshot below)​
Confirmation.jpg

7. Notice that the icon has changed to match the file name extension. (See screenshot below)​
Renamed.jpg

That's it,
Shawn




 

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If you wish to show the '.lnk' extension for shortcuts, then the above method will not work. To do this, you need to edit the registry. Click on the start orb and type 'regedit' into the search box. Right click on the program, select 'Run as administrator' and provide administrative credentials. When the registry editor opens, browse to the following key:'HKEY_CLASSES_ROOT\lnkfile' (see image below).
Capture.JPG
You will see an entry 'NeverShowExt'. Right click on this entry and select 'Delete'.
Capture1.JPG
Click 'Yes' to confirm that you wish to delete this value.
Capture2.JPG
The registry at this location will now look like the image below.
Capture3.JPG
Close the registry editor. You will need to restart your system for changes to take effect.

To hide this extension again, open the registry editor and browse to the same key as above. In the right hand panel, right click on a blank space and select 'New' and then 'String Value'.
Capture4.JPG
Capture5.JPG
Give this value the name you had previously deleted, i.e 'NeverShowExt' and press enter/return. The registry at this location will once again look like the following image.
Capture.JPG
Close the registry editor. You will need to restart your system for changes to take effect.
 

My Computer

System One

  • Manufacturer/Model
    Dwarf Dwf/11/2012 r09/2013
    CPU
    Intel Core-i5-3570K 4-core @ 3.4GHz (Ivy Bridge) (OC 4.2GHz)
    Motherboard
    ASRock Z77 Extreme4-M
    Memory
    4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
    Graphics card(s)
    MSI GeForce GTX770 Gaming OC 2GB
    Sound Card
    Realtek High Definition on board solution (ALC 898)
    Monitor(s) Displays
    ViewSonic VA1912w Widescreen
    Screen Resolution
    1440x900
    Hard Drives
    OCZ Agility 3 120GB SATA III x2 (RAID 0) Samsung HD501LJ 500GB SATA II x2 Hitachi HDS721010CLA332 1TB SATA II Iomega 1.5TB Ext USB 2.0 WD 2.0TB Ext USB 3.0
    PSU
    XFX Pro Series 850W Semi-Modular
    Case
    Gigabyte IF233
    Cooling
    1 x 120mm Front Inlet 1 x 120mm Rear Exhaust
    Mouse
    Microsoft Comfort Mouse 3000 for Business (USB)
    Keyboard
    Microsoft Comfort Curve Keyboard 3000 (USB)
    Internet Speed
    NetGear DG834Gv3 ADSL Modem/Router (Ethernet) ~4.0 Mb/s (O2)
    Other Info
    Optical Drive: HL-DT-ST BD-RE BH10LS30 SATA Bluray Lexmark S305 Printer/Scanner/Copier (USB) WEI Score: 8.1/8.1/8.5/8.5/8.25 Asus Eee PC 1011PX Netbook (Windows 7 x86 Starter)
Thank you Dwarf. It has been link in the tutorial for this. :geek:

Shawn
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro 64-bit
    Manufacturer/Model
    Custom
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2, 4TB Samsung 990 PRO PRO M.2, 8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Mouse
    Logitech MX Master 3
    Keyboard
    Logitech wireless K800
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Other Info
    Logitech Z625 speaker system, Logitech BRIO 4K Pro webcam, HP Color LaserJet Pro MFP M477fdn, APC SMART-UPS RT 1000 XL - SURT1000XLI, Galaxy S23 Plus phone
  • Operating System
    Windows 10 Pro
    Manufacturer/Model
    HP Envy Y0F94AV
    CPU
    i7-7500U @ 2.70 GHz
    Memory
    16 GB DDR4-2133
    Sound Card
    Conexant ISST Audio
    Monitor(s) Displays
    17.3" UHD IPS touch
    Screen Resolution
    3480 x 2160
    Hard Drives
    512 GB M.2 SSD
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