Render page result is more drak then origin pdf?

[frideal]

convert_from_path(inputfilepath, 150, outputfolderpath ,fmt="PNG",output_file=outputfilename,size=(None,1080),thread_count=10)

i use convert_from_path to render each page to png files.but i find render result is more drak then origin pdf look at the camel and bull

render result:

origin pdf look in Adobe Acrobat Reader DC(32bit)

origin:

pdf2image render result:

[mara004]

Maybe these images have a colour profile embedded into the PDF that pdftoppm does not preserve?

[Belval]

@mara004 response might be one thing, but you can also clearly see that pdftoppm is smoothing the output whereas Adobe is not.

Unfortunately pdf2image is just a wrapper around pdftoppm so I don't think anything can be done on my side :(