Smaller PDF page contains white background while converting

[gopal-augment]

Prerequisites

• I have written a descriptive issue title
• I have searched open and closed issues to ensure it has not already been reported
• I have verified that I am using the latest version of ImageMagick

ImageMagick version

6

Operating system

Linux

Operating system, version and so on

20.04

Description

convert -density 150 -alpha remove -colorspace sRGB pdf[0].pdf -quality 100 out.jpg

After converting to JPG, it created with white background around it

Steps to Reproduce

convert -density 150 -alpha remove -colorspace sRGB pdf[0].pdf -quality 100 out.jpg

After converting to JPG, it created with white background around it

convert -density 150 -alpha remove -colorspace sRGB pdf[0].pdf -quality 100 out.jpg

After converting to JPG, it created with white background around it

[fmw42]

Please post your input PDF file.

[gopal-augment]

PDF.

Please get the PDF from the above link. And the page number 8 we are facing that white background around it, other pages looks fine.

[fmw42]

The histogram of that page shows a fully opaque alpha channel with white underneath it.

500559: (65535,65535,65535,65535) #FFFFFFFFFFFFFFFF white

So you cannot just turn off the alpha channel and expect anything other than white. You would have to fuzzy change white to black. But that would leave artifacts.

[gopal-augment]

Not understand. What should I change in my convert command. That should convert all types of PDFs to the correct image. Please let me know

[fmw42]

What does the "correct" image look like? What do you want in place of white?

[gopal-augment]

Should the same as on Pdf pages. don't want add any background or cutoff

[fmw42]

I do not understand. What do you see as the background? I just see white.

[gopal-augment]

On page 7, I can see white color around the image. So we dont want that

[fmw42]

That page is padded with transparency. You can add -trim to your command to remove it.

convert -density 150 -colorspace sRGB pdf[0].pdf -trim -quality 100 out.jpg

[gopal-augment]

If I use -trim, it will cut off the top and bottom in the last page pdf.

[fmw42]

I will have to leave this to the IM developers.

[gopal-augment]

Okay. I'm looking forward