Bgcall is a wallpaper changer with multi-monitor support

Martin Brinkmann
Jul 11, 2013
Updated • Jan 17, 2017

Bgcall is a free program for devices running Windows that enables you to rotate a set of desktop background images easily on the system.

Microsoft has integrated basic wallpaper changing capabilities into the Windows 7 operating system. This comes as part of the operating systems themes functionality, and what you can use it for is rotate different background images on the desktop. The capabilities have been improved in Windows 8 to add support for multi-monitor systems.

While that is a great step in comparison to previous systems, it is still basic compared to some of the third party wallpaper changers out there.


bgcall multi-monitor wallpaper changer

Bgcall looks like any other program of this kind on first glance. What sets it apart from the majority are a couple of features. You will notice during installation that you can configure it to only run during system start to change the wallpaper.

That's great as it will exit after it has successfully changed the desktop background on the system so that it won't use up memory or processing power. It offers to place icons on the desktop that trigger the changing of the wallpaper, so that you can use it even while the system is running if you prefer to do so.

The first thing you will notice is that it supports multiple lists of wallpapers that you can add to the application. While not necessary, it provides you with options to group themed wallpapers for easier selection. It is however not necessary to do so as you can work with a single list as well if you prefer that.

Note that wallpapers are by default used based on their position. If you are using four lists with wallpapers, the program will by default pick wallpaper 1 from the first list, then wallpaper 1 from the second list, then the first from the third and fourth list, before selecting the second wallpaper from the first list. This can be useful if you want different wallpapers on different monitors, especially if they run in different resolutions.

You can add files or folders full of pictures to a list. If you select folders, all images in that folder will be added so make sure it only contains wallpaper images and not other pictures.

All images are displayed with their full path once added. You can select them here to see a small thumbnail preview of it in the lower half of the screen, or click on preview to display a full screen preview of how it looks like on your desktop.

Here you can also set wallpapers manually if you want which can be useful if you do not want the program to start with Windows.

Before you do, you may want to check the preferences displayed in the lower half and the settings of the program.

  • Calendar displays a calendar in the upper right corner of the screen. Change calendar settings, e.g. font, position, colors and holidays.
  • Select how you want smaller or larger wallpapers to be handled (e.g. enlarge and shrink).
  • Enable random mode which picks wallpapers randomly instead of chronologically.
  • Change the margin color.
  • Export or import lists.

The program supports the following input formats: bmp, png, jpeg, tiff and gif image files. It can be run from the command line, the following parameters are supported by it:

  • /s exit after changing the wallpaper
  • /d exit after updating the calendar
  • /z ignore execution delay settings

Bgcall is compatible with all recent Windows operating systems. Windows 8 is not mentioned on the authors website, a quick test however revealed that it appears to be fully compatible with Microsoft's latest operating system as well. A 32-bit version and 64-bit version of the wallpaper changer is made available.


Bgcall offers two core features that may make it interesting to Windows users. It first runs only when wallpapers are changed which is great if you are running a low-end system or do not want additional programs to run all the time on your system, especially if their functionality is not needed.

The second is support for multi-monitor systems. Thanks to its list system, it is easy to pick wallpapers for different monitor resolutions.

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  1. Dan Donx said on January 15, 2023 at 10:29 am

    What mental age of reader are you targeting with the first sentence? 10?

    Why not write an article on how to *avoid* upgrading from W10 to W11. Analogous to those like me who avoided upgrading from 7 to 10 for as long as possible.

    If your paymaster Microsoft permits it, of course.

  2. Dexter said on January 15, 2023 at 11:14 am

    5. Rufus
    6. Ventoy

    PS. I hate reading these “SEO optimized” articles.

    1. cdr said on January 15, 2023 at 3:32 pm

      I used Rufus to create an installer for a 6th gen intel i5 that had MBR. It upgraded using Setup. No issues except for Win 11 always prompting me to replace my local account. Still using Win 10 Pro on all my other PCs to avoid the bullying.

  3. sv said on January 15, 2023 at 6:40 pm

    bit pointless to upgrade for the sake of upgrading as you never know when you’ll get locked out because ms might suddenly not provide updates to unsupported systems.

    ps…. time travelling?
    written. Jan 15, 2023
    Updated • Jan 13, 2023

    1. Martin Brinkmann said on January 16, 2023 at 5:49 am

      This happens when you schedule a post in WordPress and update it before setting the publication date.

  4. Anonymous said on January 16, 2023 at 8:24 am

    Anyone willing to downgrade to this awful OS must like inflicting themselves with harm.

  5. basingstoke said on January 16, 2023 at 11:18 am

    I have become convinced now that anybody who has no qualms with using Windows 11/10 must fit into one of the following brackets:

    1) Too young to remember a time before W10 and W11 (doesn’t know better)

    2) Wants to play the latest games on their PC above anything else (or deeply needs some software which already dropped W7 support)

    3) Doesn’t know too much about how computers work, worried that they’d be absolutely lost and in trouble without the “”latest security””

    4) Microsoft apologist that tries to justify that the latest “features” and “changes” are actually a good thing, that improve Windows

    5) Uses their computer to do a bare minimum of like 3 different things, browse web, check emails, etc, so really doesn’t fuss

    Obviously that doesn’t cover everyone, there’s also the category that:

    6) Actually liked W7 more than 10, and held out as long as possible before switching, begrudgingly uses 10 now

    Have I missed any group off this list?

    1. Heinz Strunk said on September 19, 2023 at 3:57 pm

      You have missed in this group just about any professional user that uses business software like CAD programs or ERP Programs which are 99% of all professional users from this list.

      Linux doesn’t help anyone who is not a linux kid and apple is just a fancy facebook machine.

  6. ilev said on August 24, 2023 at 7:34 pm

    Microsoft has removed KB5029351 update

    1. EP said on August 24, 2023 at 9:21 pm

      only from windows update though
      KB5029351 is still available from the ms update catalog site

  7. Anonymous said on August 24, 2023 at 11:05 pm

    1. This update is labaled as PREVIEW if it causes issues to unintelligent people, then they shouldn’t have allowed Preview updates ot install.

    2. I have installed it in a 11 years old computer, and no problems at all.

    3. Making a big drama over a bluescreen for an updated labeled as preview is ridiculous.

    This is probably another BS internet drama where people ran programs and scripts that modified the registry until they broke Windows, just for removing stuff that they weren’t even using just for the sake of it.
    Maybe people should stop playing geeks and actually either use Windows 10 or Windows 11, but don’t try to modify things just for the sake of it.

    Sometimes removing or stopping things (like defender is a perfect example) only need intelligence, not scripts or 3rd party programs that might mess with windows.

  8. john said on August 24, 2023 at 11:17 pm

    Windows 11 was a pointless release, it was just created because some of the Windows team wanted to boost sales with some sort of new and improved Windows 10. Instead, Microsoft cannot support one version well let alone two.

    1. John G. said on August 25, 2023 at 12:08 pm

      Windows 11 is the worst ugly shame by Microsoft ever. They should release with every new W11 version a complete free version of Starallback inside just to make this sh** OS functionally again.

  9. EP said on August 25, 2023 at 3:10 pm

    motherboard maker MSI has recently released a statement regarding the “unsupported processor” blue screen error for their boards using Intel 600/700 series chipsets & to avoid the KB5029351 Win11 update:–UNSUPPORTED-PROCESSOR–Error-Message-of-Windows-11-Update-KB5029351-Preview-142215

  10. EP said on August 29, 2023 at 7:32 pm

    check out the following recent articles:

    Neowin – Microsoft puts little blame on its Windows update after UNSUPPORTED PROCESSOR BSOD bug:

    BleepingComputer – Microsoft blames ‘unsupported processor’ blue screens on OEM vendors:

  11. Leonard Britvolli said on August 30, 2023 at 10:33 pm

    While there may be changes or updates to the Windows 10 Store for Business and Education in the future, it is premature to conclude that it will be discontinued based solely on rumors.

  12. sembrador said on September 5, 2023 at 9:32 pm

    My advice, I left win 15 years ago. Now I’m a happy linux user (linuxmint) but there is Centos, Fedora, Ubuntu depending on your needs.

  13. EP said on September 6, 2023 at 11:55 am

    motherboard maker MSI has recently released new BIOS/firmware updates for their Intel 600 & 700 series motherboards to fix the “UNSUPPORTED_PROCESSOR” problem (Sept. 6):–UNSUPPORTED-PROCESSOR–caused-BSOD-on-MSI-s-Intel-700-and-600-Series-Motherboards-142277

  14. Raphael Benzo said on September 24, 2023 at 9:52 pm

    I try to disable the Diagnostics Tracking Service (Connected Devices Platform User Services) but it wont let me disable it, any help will be greatly appreciated.
    Tank you for your help

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