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Image cache compression ?

PitchOu Total Posts: 39 Joined: 2008-02-04 Villeneuve d'Ascq, France Ignore user	Hi all magento team and users ! Is there a compression level set somewhere for cached images ? The quality of all my cached images is far less worse thant the original ones ! Please see the 2 images attached for comparison : small1.jpg --> /shop/media/catalog/product/s/m/small.jpg (not cached) small2.jpg --> /shop/media/catalog/product/cache/1/small_image//135x135/s/m/small.jpg (cached) Can I set or change this compression factor ? Thanks for your help ! Image Attachments Click thumbnail to see full-size image
	Posted: April 2 2008 \| top

PitchOu Total Posts: 39 Joined: 2008-02-04 Villeneuve d'Ascq, France Ignore user	Finally I modified lib/Varien/Image/Adapter/Gd2.php The jpeg images are generated using the php imagejpeg function using the default quality, which is 75% (= sometimes not enough to get a good quality). So I hardcoded a quality that suits my needs, thus : - I upload images in jpeg 100% in the product creation process - they are processed by the system (resizing, watermark if any, ...) - they are saved in the media / cache folders ... using imagejpeg with the new quality parameter and I got nice pictures now ! Do do it right I should have had a “jpeg quality” parameter in the admin but I don’t have the time now ... I have a shop to open
	Posted: April 2 2008 \| top \| # 1

mr_dimsum Total Posts: 35 Joined: 2008-01-28 Ignore user	Be great if you can go a bit extensive to let us know how about you managed to modify the compression quality. :D
	Posted: April 20 2008 \| top \| # 2

FOOMAN Total Posts: 452 Joined: 2007-12-13 Auckland, New Zealand Ignore user	Hi Dimsum, You can up the quality of the thumbnails generated in this file /lib/Varien/Image/Adapter/Gd2.php Look for: `case IMAGETYPE_JPEG: imagejpeg($this->_imageHandler, $fileName); break;` and change it to `case IMAGETYPE_JPEG: imagejpeg($this->_imageHandler, $fileName, 100); break;` More info on imagejpeg and related image handlers can be found here Signature My Magento Store \| Extensions by FOOMAN Extensions \| Speedster \| PdfCustomiser \| GoogleAnalyticsPlus \| OrderManager \| All \| Support
	Posted: April 27 2008 \| top \| # 3

(ok) Total Posts: 8 Joined: 2008-04-15 Oregon, United States Ignore user	Is it possible to disable this feature completely. I prefer to compress my image on a image by image basis. And another question, is there a easy way to switch to a different “viewer” for images. Something more like the slide-style viewer on The Climbing Shop.
	Posted: May 7 2008 \| top \| # 4

aDy Total Posts: 25 Joined: 2008-05-09 France Ignore user	Hi ! I think is a very good idea for the next releases of Magento, we can disable easely the jpg compression, because when i save the pictures with photoshop they are already optimized ! Sorry for my english, and thanks for your reading Amically, Ady
	Posted: July 6 2008 \| top \| # 5

norbolig Total Posts: 328 Joined: 2008-03-15 Ignore user	@FOOMAN: Excellent! This solved my problem with poor quality images in my store view. The inbuilt compression worked well on bigger images, but I got problems on small images, especially that I had to resize before I uploaded. After this fix, I can have Photoshop take care of the image optimizing. Thanks a lot.
	Posted: July 7 2008 \| top \| # 6

00christian00 Total Posts: 87 Joined: 2008-05-02 Ignore user	In version 1.1 the code has changed. To up the quality change the line 68 `call_user_func($this->_getCallback('output'), $this->_imageHandler, $fileName);` to `if (IMAGETYPE_JPEG === $this->_fileType)call_user_func($this->_getCallback('output'), $this->_imageHandler, $fileName,90); else call_user_func($this->_getCallback('output'), $this->_imageHandler, $fileName);` 90 is my quality,change to your preference.Remember to clear the image cache to test.
	Posted: July 31 2008 \| top \| # 7

doctorlogos Total Posts: 178 Joined: 2008-05-06 Ignore user	I also think that the compression rate must be a configurable option from the admin, so I don´t have to change the code. I optimize all the images from Fireworks, so it´s already compressed. I hope for the next realise.
	Posted: August 7 2008 \| top \| # 8

bozmac Total Posts: 18 Joined: 2008-06-17 Ignore user	Line 174 of Mage_Media_Model_File_Image $result = imagejpeg($object->getTmpImage(), $object->getFilePath(true), 80); change to 100 for no compression but big file sizes.
	Posted: September 25 2008 \| top \| # 9

mayerwin Total Posts: 181 Joined: 2008-01-15 France Ignore user	Solution here: http://www.magentocommerce.com/boards/viewthread/6158/P15/ Signature I have finally found the best web hosting ever for Magento! 1 second max pageload with my website, for less than 15€ a month… And a very good support. I strongly advise you to try them : Rackspeed.de, there is even a 7 days free trial. Erwin Mayer Foundation
	Posted: October 6 2008 \| top \| # 10

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