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What DPI to use for web images?
72 DPI
As in, “images for the web should be 72 DPI while images for print should be at least 300 DPI”.
Does PPI matter for web?
There are reasons why the pixel per inch resolution matters for print, but the 72 ppi rule for web images is a myth, although it did have a reason at one time in history. On a screen, pixels are pixels and the pixels don’t change size unless you change the resolution setting of your monitor.
What resolution should I use for web images?
72 PPI
It’s best to look at the pixel dimension of your images as you’re making them. As long as they’re at least about 1024 pixels wide (for a horizontal image) they should be fine for teaching. The standard resolution for web images is 72 PPI (often called “screen resolution”).
Are there any images that do not have a PPI setting?
In fact, many web images such as png, gif, jpg may not even store a ppi setting in their internal data and rely on width and height settings. A 100 pixel x 100 pixel image displays as that on the web regardless of any PPI/DPI setting. This is why images for retina displays are saved at 2x size, rather than an increased ppi setting.
What kind of DPI do web images need to be?
If you’ve ever had to communicate with someone about creating/resizing images for the web, I’ll bet you’ve heard a lot about “72 DPI”. As in, “images for the web should be 72 DPI while images for print should be at least 300 DPI”.
How much DPI / PPI do you need for an 8×10 photo?
In our Library of Congress digital preservation resources we recommend 300 dpi/ppi for 4×8, 5×7 and 8×10 photos but why not 1000 dpi/ppi? 2,000 dpi/ppi? 10,000 dpi/ppi? Is there a threshold beyond which the pixel density is of little or no additional value to us?
What does it mean to have a resolution of 300 ppi?
Scanners and cameras contain pixels and “sample” the image at a “sampling rate” depending on the distance between the camera and the image. So when people talk about “resolution” using 300 ppi or 600 ppi or 3000 ppi they are actually using the “sampling rate” of the device.