File size is important. Large image sizes slow down page loading speed — leading to lower SEO and viewer attrition (when viewers bounce off the page).
So, you always want to reduce file size. When you get a profile picture or a stock photo, the file is almost always much wider than it needs to be for display.
Two free tools to reduce image size
We like using Squoosh or BulkResize. Both tools are free.- Squoosh gives you more options.
- BulkResize can be faster if you usually resize to a preset width. For example, this link specifies resizing to a width of 400 pixels.
What width should I set for resizing images?
In general, resizing down to 400 pixels or 800 pixels width will deliver a sharp image and significantly reduce file size.
In Squoosh, if you pick the resize option, you can enter a width in pixels, and then you are good to go!