Compression gives me a black background

[Minaboussabi]

Hello,

I'm using the free trial for spire pdf 5.1.0 java version, when trying to compress a file it gives me a black baground, the source file contains white backgroud. this apears only in some files.
Is compression related to image type within the pdf file? if so, is there a way to get image's type to skip them?

Thanks

[Triste.Dai]

Hi,

Thanks for your inquiry.
We appreciate your feedback regarding our free PDF product and we're sorry to hear that you are experiencing issues when compressing the document.

We recommend that you try our latest commercial version of our Spire.PDF_9.5.6, which includes improvements to image compression and processing. We have also introduced a new compression API that allows you to set the compression options for images or not. Please refer to the following code.

Here is an example code snippet that demonstrates how to use the new compression API to compress a document while disabling image compression:

Code: Select all

PdfCompressor compressor = new PdfCompressor("test.pdf");
// Set don't compress images
compressor.getOptions().getImageCompressionOptions().setCompressImage(false);
compressor.compressToFile("result.pdf");

We hope that this solution will address any concerns you may have had. Please let us know if you have any further questions or require additional assistance.

Best regards,
Triste
E-iceblue support team

[Triste.Dai]

Hi,

Greetings from E-iceblue.
How is the issue now? Is it been solved? If not, please share us with your test document to help us investigate further.
We are looking forward to your feedback.

Best regards,
Triste
E-iceblue support team