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Irfanview is unable to open WBMP images created by Photoshop

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    Solved Irfanview is unable to open WBMP images created by Photoshop

    I'm using Irfanview 4.54 on Windows 7 64 bit.

    When I try to open a WBMP image created by Photoshop I'll get an Error message: "Can't read file header ! Unkown file format, empty/damaged file or file not found !".

    The image is created by Photoshop through the "Save for Web" feature. Like this:


    Click image for larger version

Name:	SaveForWeb.png
Views:	1
Size:	142.1 KB
ID:	85320

    When I look at the folder that has the WBMP image, I noticed that the WBMP image has the .wbm file extention.
    This is strange, the WBMP format is supported by Irfanview (see formats over here: https://www.irfanview.com/main_formats.htm ).
    However a .wmb is not listed in the formats. This is strange.

    When I open the WBMP image in Photoshop it works perfectly, but in Irfanview it does not.

    The image can be downloaded from this source: http://juliandocumentary.com/irfanview/_MG_1555_.wbm

    What is causing the error? How can it be fixed?
    Last edited by julekker; 08.07.2020, 10:44 AM.

    #2
    As it says in i_plugins.txt

    Note: WBMP format hasn't a specific header and IrfanView can't recognize all such images. If you want to read WBMP images with
    IrfanView, the file extension MUST BE ".wbmp" !
    If you rename the extension, your image opens without any error.

    Click image for larger version

Name:	WBMP Image.png
Views:	1
Size:	123.2 KB
ID:	83473
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      #3
      Thanks for your support.

      I did what you suggested: I changed .wbm to .wbmp then I opened the file in IrfanView.
      A different error appeared: "Decode error ! Can't load PlugIn: "FORMATS.DLL" ! Please install or update PlugIns from IrfanView homepage and/or enable the PlugIn in 'Help->PlugIns' menu. (64 bit) ".

      --------------

      I followed the instructions IrfanView gave me; I downloaded the Formats.dll plugin ( from https://www.irfanview.com/plugins.htm ), and extracted it to the plugins directory on my harddisk.
      Then I changed the file extension of the image (from .wbm to .wbmp).

      It worked perfectly!

      Big thanks!
      Last edited by Bhikkhu Pesala; 10.07.2020, 11:17 AM. Reason: Fixed typos

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