Question: How many pixels do I need for sharing photos online?
Answer: When posting photos online, you do not need nearly as many pixels as you do for printing. This also goes for images that will only be viewed on-screen such as in a slide show or presentation.
Having too many pixels makes it difficult to view photos on a monitor and it makes the file size much larger--something you need to avoid when posting photos on the Web or sending them by email. Remember, not everyone has a high speed Internet connection or a large monitor, so sizing photos down before sharing them is the courteous thing to do. The recipient can always ask for a larger file if they wish to print it--this is always better then sending large files without asking first.
When putting your photos on the Web or sending them by email, the smaller you can get them, the better. There are three things you can do to make your pictures smaller for sharing online:
Since PPI and DPI are only relevant to print size and quality, when dealing with digital photos for the Web, you need only look at pixel dimensions. Most 24-inch desktop monitors today have a resolution of 1920 by 1080 pixels, so your images need not be larger than this for on-screen viewing. Laptops and older computers will have an even lower screen resolution, so keep that in mind as well. The smaller the pixel dimensions of an image, the smaller the file size will be.
- When sharing photos online, 1200 by 800 pixels is a good average size to go with.
- If you wish to reduce file size even further, reduce your images down to 800 by 600 or even 640 by 480.
- If you're sure your recipients or Web site visitors won't mind waiting a little longer, you may want to go as large as 2000 pixels wide, but anything larger than that is going to be too large to see in the majority of computer monitors without scrolling.
For details on how to resize and compress photos for online use, see the next FAQ: How do I reduce the size of photos for online use?