Image resize on mobile IOS App

Site URL: https://www.tastytravellife.com/

Hello,

I just started my blog and I noticed that I can easily resize my images on web with my computer. I mostly use my iPad to update my blog, but can not find a way to resize in the same way. Webbrowser on iPad is crashing if I try and app is not showing the same dot. see pictures for web version on laptop and app version on iPad. Is there a way to get my pictures resized on the app to get them aligned if I put text above one of them. (See blog posts on site to get idea what I want) just annoying to grab my laptop just for resizing before I can publish it.

Thank you is advance.