Export Compression Rate

[sctrksales]

When exporting a PDF document into an Image can you change the compression rate or which is the best format to give me the smallest file?

[Paul - PDF-XChange]

Hi sctrksales,

take a look at the Options button next to the drop down list for the image file type.:




it has options for compression amongst other things. These options are specific to the image file type selected. Here is a sample from a png export.:




hth

[Paul - PDF-XChange]

I see this was posted twice. I have deleted the repeat post.

[Bhikkhu Pesala]

It depends on the data time. A lot of PDF files are mostly text, and text will usually give the best results using PNG format.

However, if the data is photographic images, JPG will give much smaller file sizes.

If the images are dialogue boxes, interface toolbars, etc., or other images with large areas of uniform colour, again PNG will give the best results. PNG format is lossless, while JPG always degrades the image to some extent. However, for most natural photos, the trade off is well worth while. Even at high compression rates, JPG photos still look OK. With text however, even the highest quality JPG images will usually look worse, and be much bigger than a PNG file.

Choose the resolution to suit your needs. If the image is to be used on a web page, look at the number of pixels rather than the resolution.

PNG images can be optimised further by using PNG Crush — saving about 15-20% on the file size.

[Jamie - Tracker Supp]

Thanks Bhikkhu!

[sctrksales]

Thank you Paul and Bhikkhu Pesala, information helped me some what, but the only problem with using a PNG or JPEG file I only get the option to turn each page into a separate image file and that wont work for what I am doing.

The document I am using is a 45 page doc that I have to turn into a single multi-page image that can be attached to a particular item inside a program that my company uses, so the PNG and JPEG won't work. I have been using the TIF format, but scanning it in using our companies copy machine that I guess has it's own compression set up. I found this program and thought I might be able to use it to convert the PDF files while still at my comp with out having to print them out and then scan them in as TIF files. Don't know if this will work for what I am trying to accomplish, but if any one has more suggestions I'm ready to read and learn.

[Paul - PDF-XChange]

Hi sctrksales,

you certainly can export the PDFs to TIF and as TIF supports multi-page image files this should work for you. If an image format supports multiple pages then the export dialogue will give you options in the section 'Export Mode'. When a single page format is selected the options change accordingly.

Supported multi-page formats include: TIF, GIF, JBIG2 and DCX. I do not have Bhikkhu's knowledge of the pros and cons of the various image file formats however.

I hope that helps.

[Bhikkhu Pesala]

The document I am using is a 45 page doc that I have to turn into a single multi-page image that can be attached to a particular item inside a program that my company uses, so the PNG and JPEG won't work.

Next time, please provide essential information up front to save those who might help you from wasting their time.

Yes, you can export a PDF to a multipage TIF image, and you can select the compression method on the TIF options dialogue. Deflate seems to be the default, which is lossless AFAIK. If the PDF file is mostly photos, try JPG for a small file size.