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Compression of Images

Thread began 4/14/2010 12:12 am by adam106173 | Last modified 5/06/2010 3:25 pm by Jimmy Wu | 1783 views | 14 replies |

adam106173

Compression of Images

I noticed that the image compression for the thumb and full size image is of poorer quality than what I initially created. Where can I control this setting?

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Jimmy Wu

The product image is made to fit in a 400x400 pixel box and the thumbnail image is made to fit in a 200x200 pixel box. If your images fit in that before uploading, they wont be altered.

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adam106173

My large images are 400 x 287 and thumbs 150 x 150. The images sizes seem correct on the pages, but the compression isn't. It looks to be 70 or 80 compression setting. Is there a place where this setting is implemented?

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adam106173

There is for sure some kind of image compression going on. I replaced an image directly by uploading it into the imagesuploaded folder. I had that webpage opened, then just refreshed the page and watched the image quality improve. Where is the setting to control image compression? It's gotta be somewhere.

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Jimmy Wu

There shouldn't be any compression of the images unless you chose web images only and convert to jpg or convert to PNG. Have you specified either of those options? Could you post up the two images so I can see the difference?

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adam106173

This post has been deleted.

adam106173

I'm not even sure where the web images only option exists. I don't see it. Here are two images. The original source image and the one I pulled off the webpage. You can see the little "wormy" low rez artifacts happening on it.

Thanks,

Adam

Attached Files
sample.zip
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Jimmy Wu

If you go into your page on Dreamweaver and open the Server Behaviors panel, there should be one for the upload behavior you applied. If you double click on that, there is a web images only checkbox that you can check.

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adam106173

I could not see the server behavior you mentioned when opened to the product_insert page in the admin. Also, I am using only jpg and gifs when uploaded.

I found this code:

<?php
// WA_UploadResult1 Params Start
$WA_UploadResult1_Params = array();
// WA_UploadResult1_1 Start
$WA_UploadResult1_Params["WA_UploadResult1_1"] = array(
'UploadFolder' => "../imagesupload/",
'FileName' => "[FileName]",
'DefaultFileName' => "",
'ResizeType' => "1",
'ResizeWidth' => "400",
'ResizeHeight' => "400",
'ResizeFillColor' => "#FFFFFF" );
// WA_UploadResult1_1 End
// WA_UploadResult1 Params End?>
<?php
// WA_UploadResult2 Params Start
$WA_UploadResult2_Params = array();
// WA_UploadResult2_1 Start
$WA_UploadResult2_Params["WA_UploadResult2_1"] = array(
'UploadFolder' => "../imagesupload/",
'FileName' => "[FileName]",
'DefaultFileName' => "",
'ResizeType' => "1",
'ResizeWidth' => "200",
'ResizeHeight' => "200",
'ResizeFillColor' => "#FFFFFF" );
// WA_UploadResult2_1 End
// WA_UploadResult2 Params End
?>

Since my images fit within the dimensions, though not exact, you say nothing should be done, right? Neither image exceeds those dimensions.

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Jimmy Wu

Sorry, I didn't take into account that you might not have Digital File Pro. Which version of PowerStore are you using? What kind of image formats are you uploading?

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