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Inavertent file compression in DFP2

Thread began 8/05/2009 5:58 am by phil130821 | Last modified 9/29/2009 7:05 pm by Eric Mittman | 1781 views | 5 replies |

phil130821

Inavertent file compression in DFP2

Has anyone else had the following problem:

I have implemented DFP2 (latest fix) and specified none for adjusting the dimensions and also left the format parameter as "keep same format" but have noticed that the upload is compression the images quite heavily.. for example an 11kb thumb is now 3kb online!

Thanks in advance,

Phil Oligario

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Eric Mittman

There is no compression implemented by DFP for image uploads, it will resample the images for resizing but it does not do any compression.

I have not seen or heard of any other reports from users regarding this. Is the image the same image that you uploaded? Have you tried using a larger image that is more than 100k? Please test it out with a larger image and check the uploaded image to see it's size and quality.

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phil130821

Hi Eric,

I have resolved the issue by unticking the "keep same format" option on the first page of the DFP2 wizard.

For some reason when that was ticked, it was shrinking the filesize down and the images suffered a loss of quality. I'll try with larger images and see if the problem still occurs.

Thanks,

Phil

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Eric Mittman

Thats odd that adjusting the web images option for 'keep same format' would get you a different result. In my testing I had that option set this way and did not see any resampling of the image. After you perform your other test let us know what your result is.

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coryk246725

Same thing here

I noticed the same thing when using "keep existing format." After switching to "convert to JPG" - 90 quality, the uploaded images now look noticeably better.

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Eric Mittman

Do you have an example image file that you got this result with? I have not been able to reproduce this in my testing with the images I'm using. I'm wondering if it has to do with a particular type of image or some other aspect of the image itself. Please post back with an example image and I will perform some testing to try and figure out what is going on.

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