Email and overall file size is a big factor in acquisition email. V12′s recommended email file size for improving Inbox delivery is 50-70k (images and text included) Therefore, it’s important to optimize images in a graphics manager program. There are many graphics manager programs available and one of the most popular is Photoshop. You are able to control and manipulate image size, type, resolution and overall file size. Below is a good explanation on overall image properties in converting images for print ads to email. V12 does offer this service to clients so assistance is available by our Creative Services Team
Source: http://www.pptxtreme.com
When dealing with graphics files there are 3 properties that go into determining the resolution of a file.
Pixels: The exact number of ‘dots’ both horizontally and vertically that make up the file. This is the actual resolution of the file. DPI and Inches affect only the size of the image as it is displayed or printed, but the actual pixels is finite in a bitmapped file.
DPI (Dots per inch):Â Â The number of ‘dots’ or pixels per each inch of a printed or scanned document.
Inches: The actual size (either printed or scanned) of an image.
These three parameters have direct effect on one another. With any 2 of the parameters known a simple mathmatical formula will give you the third. Let’s look at a simple example:
An image created in Photoshop at 300 x 300 (that’s 300 pixels wide by 300 pixels high) with a DPI of 100 is exactly 3″ x 3″.
Inches = Pixels/DPI
300 /Â 100 =Â 3
If you look at the Image Size Menu in Photoshop you can see a little easier how these relate.
Notice the Resample Image check box. This determines whether you want to actually resize the image. With this box UNchecked, when you enter a new DPI, Photoshop shwill automatically change the DPI to compensate and vice-versa.
DPI = Resolution – A common mistake
Many people think DPI is all that matters. They couldn’t be more wrong! A person creating graphics for print often says “I need it at 300 DPI.” That really doesn’t tell us much.
For example, if I am scanning something for that person that is 2″ x 2″ and I scan at 300 DPI, I will get an image that is 600 x 600 pixels. If my original was 8″ x 10″, I will get a result of 2400 x 3000 pixels. That is quite a difference in both resolution AND FILE SIZE. What else is missing here. Well, it doesn’t really matter what the original size of the image is (in inches), what matters is what the size of the output will be. So if the person asking for 300 DPI also added that this image (when printed) will be 2″ by 2″, then we can do the math! We know know that they want a final resolution of 600 x 600 pixels! We can do the math when we scan based on the size of the original, or scan at a high enough resolution and resize it in Photoshop (or any graphics program).
Sometimes, there are issues with the file types being imported. JPG files will sometimes have the DPI and inches in them, GIF’s will ONLY have the pixel information, and PNGs will ALWAYS (when exported from Photoshop) change the DPI to 72 no matter what resolution you were working in with Photoshop.
You must belogged in to post a comment.