BMP256 not supported

I get this "Warning: Image format 'bmp256' will not be supported in a future release. " on my code when saving graphics to bmp format.

Is there a work around possible?

[Altaïr]

Het @Philip Chin,

Here's what I did in MATLAB R2025a to export the current figure in bmp format. However, I did not face any warnings.

fig = getframe(gcf);            % Capture the current figure as an image
rgbImage = fig.cdata;           % Extract the RGB image data

% Convert to indexed image with 256 colors
[indexedImage, cmap] = rgb2ind(rgbImage, 256);

% Save as BMP file
imwrite(indexedImage, cmap, 'myfigure.bmp', 'bmp');

If you still face the warning please attach a simplified code that can be executed to reproduce the warning.