![]() My guess is that I would save the image to the highest quality/resolution first for the print version - say 300 Pixels per Inch, then save a copy at a lower resolution of 72 Pixels per inch in Jpeg for the opencart web ? However I also wanted to save a copy (also stored localy on Pc) for the opencart site. I successfully obtain the true size of the product for print, by using the 'document size' option in PS7 and alter to 300 PPI. I need to use images for print purposes (typicaly 30mm x 65mm, true size of the produt itself) in a file format that allows layers for posible re-editing at some point ie: PNG? ![]() That little engine will not consistently know what do do with 60 mb of extreme dpi at extreme color fidelity, so give it <1mb at 96 dpi at reasonable color fidelity, uploaded into /image/data/, for it to toss its own way into /image/cache/data/ for display. Those of us who are really-really fussy work routinely with enormous raw and other file formats (in several scores of mb), and give OC not only suitably standardized /image/data/ files but ALSO suitably premade /image/cache/data/ files so that the OC little engine that can is outmaneuvered and won't. The originals in /image/data/ are not shown as product shots, what OC does FROM them is shown as product shots. Give it 96 (or for that matter 72) dpi rather than something complicated or oddball, and as close to no lossiness as posssible, to start with. The "sweet spot" for lossiness in the ORIGINAL files put into /image/data/ is none or as close to none as "zero" compression affords, FROM WHICH the OC thumbnail-maker does what it does in populating /image/cache/data/, preferably given standardized files to start with, BECAUSE the OC thumbnail-maker is itself not a graphics program of first rank, and is understandably a bit half-witted. Even now some of those plant 'em pixel-wise or dot-wise, and even now some of those screw up either or both of images' inherent X x Y or html-preset X' x Y' sizes (in some instances along the way that has been ludicrous enough to warrant banning Safari and Chrome). Screen rendering depends upon operating systems and browsers. Use it? Like it? Want to support it but don't know how? Send a donation to show your appreciation.ĭaniel's PayPal address - Paypal address - The 96 is not a "printer" setting, it relates to essential pc/Apple differences and most graphics programs follow suit, and the pixel/inch (dpi) count relates to information stored inside the file (every pixel has moreover a color count, which for practical reasons can actually be sharpened in appearance when dropped for good cause shown all the way down to 256), thus, also to file content and overall file size. You can change all your default images sizes for pop-ups, thumbnails, category, additional products, etc., by going to System -> Settings -> Image in your OpenCart administration panel. ![]() They always render images at a 1:1 pixel ratio.Īn image with a 72 dpi setting will look the same on the web as one with a 600 dpi setting, and it has no affect on the file size for our purposes. JPG files at 80% compression is right around the "sweetspot" in sharpness to filesize for web images.Īny more compression becomes noticeably visible, and any less compression doesn't give a good enough return in sharpness for the increase in filesize.Ĭropping large images to show small sections in better detail is the best way to go for really intricate/large pictures.Īny decent/basic image editor should allow you to crop, and export a JPG with your choice of compression setting.Ī good image editor will let you select multiple images at once, and batch them to the correct size and settings with a couple clicks, saving a ton of time both on resizing individual images and uploading them later.Īlso, unless your images are meant to be printed at a certain size, you can safely ignore the dpi setting. That's big enough to show good overall details, but small enough to keep the file size down. Labeshops and butte had good recommendations on 500x500 or 600圆00 pixel dimensions.
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