Many new WordPress users don’t understand the difference between an image file taken directly from a digital camera and images that are used on the web. If they don’t understand the difference you can bet that training them to use an image editor to decrease the size of the photo is a lost cause
The problem: Large digital camera images can take over 5 seconds to download and make the website REALLY slow.
The solution: Use Resize at Upload Plus to automatically optimize photos as they are uploaded.
Specify a max height and width in the plugin settings and you are good to go. If the user is struggling to create WordPress photo galleries we recommend reading this post.
Note: This plugin does not appear to update very often, but it has always worked for us.
Other Search terms for this problem include…
- Prevent large images WordPress
- Oversized images WordPress
- Decrease image size WordPress