Exporting with border issues

[eric_0395]

Why is it that when I export an image from lightroom mobile it can be a relatively large (10-25mb) file, but if I add a border it's around 1mb or less for the same exact file? why can I not export a photo with a border and have it remain the same file size? 

additionally, there is no option in my lightroom on desktop to add a border. I have seen online options for a stroke border or developer settings, but these do not exist in my lightroom and do not show up in searches? 

[kglad]

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from using the community bugs">