not open bmp

FWIW, all the linked .bmp files are 8bit which as I mentioned are not supported in Monterey 12.6. They can be viewed and converted to something else with an app such as XnView MP.

jajacek wrote:

I reported, but they don't want to take care of it, blaming the fact that these are windows files

Well, that doesn't make much sense since they open in Monterey 12.5.1 and earlier. The 8bit .bmp files on this page https://eeweb.engineering.nyu.edu/~yao/EL5123/SampleData.html also open in Firefox & Brave but not Safari in Monterey 12.6.

[Edited by Moderator]

Just to add, they also open in GraphicConverter 11 along with the aforementioned XnView MP and can be converted to jpgs or pngs, etc.

If you have bmp files that you need to use immediately try GraphicConverter's demo version. It can open every image file type imaginable.

Updating from what version to what version?

Are you trying to open a bmp file by double-clicking? What exactly happens?

Did you try starting Preview and opening from within the application? What happens?

jajacek wrote:

It turns out that the Cupertino company is gradually limiting our freedom.

Or, it could just be a bug in 12.6.

You can file a bug report from the feedback page.

Feedback - macOS - Apple

Would it be possible to post one such file, so we can test? You could send it to yourself using wetransfer and post the link here.

Are you getting this error message?

Monterey 12.6 doesn't open bmp files that are less than 24bit.

Same problem here. I opened my keynote presentations to work on them and I was surprised that  there were missing images in my presentation. It shows squares with x's through in some of them. I saw somewhere in the apple forum:

"In order to check to see if the images are still in there:

Duplicate the file

Rename the duplicate so that it ends in .zip

Doubleclick the file"

So i discovered that the files that are not showing in my keynote presentation are the ones that have the .bmp extension.

by the way, my presentations are saved in iCloud, so when I open them in my older MacBook Pro 2012, it works fine.

I wasted my entire morning trying to solve this issue and I found this forum. So I can see that this might be the problem.

Apple should solve this issue ASAP, imagine to edit many pictures in several presentation to change the bmp format.

no way!

Wasted my whole morning trying to solve this.... =/

deuelpm wrote:

I did it the hard way, using VMware player and an eval of windows 10, saved my bmps as jpgs. :)

You're right. You did do it the hard way. 😎

Why did this change between 12.5.1 and 12.6? Why did it have to? The .bmp format - and support for it - goes back to the dawn of time. That it “opens in preview” doesn’t help for things like backgrounds - a pretty common use for BMPs. 

Let’s all report this bug to support; clearly they don’t have our user stories represented very well. 

…I might have tried Photoshop…

I was surprised SnagIt didn’t load it.

I did it the hard way, using VMware player and an eval of windows 10, saved my bmps as jpgs. :)

Now my background fades to the back once again instead of the seasick I was getting from that red/purple gradient thing that comes with 12.6.