ImageEn Forum - PDF image compression

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PDF image compression

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AScomp

Germany
18 Posts

Posted - Feb 25 2022 : 19:13:49

Hi,

is there a way to compress images in a PDF file with ImageEN?

I would like to open a specific PDF file, reduce quality of images included in the PDF file and save the PDF (to reduce PDF file size).

Kind regards

Andreas

xequte

38608 Posts

Posted - Feb 26 2022 : 17:19:53

Hi Andreas

If the PDF only contains images, then yes (with caveats). If it contains text and other content that you don't want rasterized, then no.

Nigel
Xequte Software
www.imageen.com

yeohray2

Malaysia
106 Posts

Posted - Sep 09 2022 : 20:18:35

I'm exploring this too - I have PDFs where users embed images with 300dpi resolution unnecessarily. Ideally, I would like to extract those images, reduce the resolution, then replace the original images with these resampled images. Is that possible using ImageEn?

Thanks in advance.

Ray

xequte

38608 Posts

Posted - Sep 10 2022 : 00:27:08

Hi Ray

Specifically speaking, ImageEn can do this:

1. Load the pages of the PDF as images (using PDFium). Note that this includes the whole page, so you would need to crop them in some way, e.g. using:

https://www.imageen.com/help/TImageEnProc.AutoCrop.html

2. Resample the images to lower the resolution:

https://www.imageen.com/help/TImageEnProc.Resample.html

3. Save the set of images as a new PDF (ImageEn native PDF support):

https://www.imageen.com/help/TImageEnIO.CreatePDFFile.html

It is not an ideal solution. I expect there are better/easier ways to do this.

Nigel
Xequte Software
www.imageen.com

yeohray2

Malaysia
106 Posts

Posted - Sep 14 2022 : 18:12:39

Hi Nigel,

Thanks, will try this.

Ray

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