Posted by Dottie Short on December 14, 2010 at 1:53 PM
I thought it was time that I posted a head-shot of myself on my "personal data" page, but I can't get the file under 10 kb. First time I started with the max 48 px on the long side, then I tried 24 px on the long side. Each time I saved the jpeg, the kb were over the 10 kb max and quality was set at "0". What's going on?
Posted by Paul DeCesare on December 14, 2010 at 2:33 PM
Dottie, my guess is that the JPG isn't being reduced down to 72 dpi. Here's what I would try: open your original image back up, the select the crop tool and put in your dimensions (48 px on the long side if it isn't square), then put 72 in the Resolution box. Crop your image the way you want and then do Save For Web. You should get an image under 10KB now. Also make sure that "Convert to sRGB" is checked on the Save/Web form if your version of ACR has that. Try it and let us know!
Posted by David Bostedo on December 14, 2010 at 4:16 PM
Dottie, my guess is that the JPG isn't being reduced down to 72 dpi. Here's what I would try: open your original image back up, the select the crop tool and put in your dimensions (48 px on the long side if it isn't square), then put 72 in the Resolution box. Crop your image the way you want and then do Save For Web. You should get an image under 10KB now. Also make sure that "Convert to sRGB" is checked on the Save/Web form if your version of ACR has that. Try it and let us know!
The DPI in NO WAY affects the size of the file - only the pixel dimensions matter. See this posting for a more detailed explanation and discussion.
What's likely happening is that you still have profile or metadata (EXIF or IPTC) in the file. This amount of information won't change with file size, and can be larger than 10 kB. I believe "Save for Web" in PS strips this all away, so that should help - but you do need to make sure the settings in "Save for Web" are correct. Other programs can probably do something similar.
Posted by Dottie Short on December 14, 2010 at 5:19 PM
Thanks for both your responses. As you can see My mug is now on the NPN site.
Posted by Paul DeCesare on December 17, 2010 at 5:41 PM
Hey David, does the dpi affect the size of the file at all?
I think from this point on I'm going to make a galliant effort to understand resolution once and for all, lol!
Posted by Paul DeCesare on December 17, 2010 at 5:43 PM
The funny part: I read and responded to that post back in Mayand even thanked you for the info. I suppose I need to REMEMBER what I read, ya think?!?
Hey Dottie, nice mug!
Posted by Paul DeCesare on December 17, 2010 at 5:51 PM
Dottie, David's right, I just cropped a file at 72dpi and at 300dpi and saved them as a PNG file, and the filesizes are identical. I did say it was a "guess", and boy that was a wrong guess. David, I'm re-reading that article tonight.
Discussion
7 repliesThe DPI in NO WAY affects the size of the file - only the pixel dimensions matter. See this posting for a more detailed explanation and discussion.
What's likely happening is that you still have profile or metadata (EXIF or IPTC) in the file. This amount of information won't change with file size, and can be larger than 10 kB. I believe "Save for Web" in PS strips this all away, so that should help - but you do need to make sure the settings in "Save for Web" are correct. Other programs can probably do something similar.
I think from this point on I'm going to make a galliant effort to understand resolution once and for all, lol!
Hey Dottie, nice mug!
Sandy