Not sure what image size on FB you need pero try mo magresize here. May edit function to zoom-crop into the section you want. Source: almost 2 years ago

To design your images, you can use Canva, paired with an Image Resizer if you don't have access to Canva Pro and need to tweak the size of the picture. - Source: dev.to / about 2 years ago

Have you tried online tools like https://promo.com/tools/image-resizer? Source: over 2 years ago

Not sure how to do it in photoshop but you can try this free tool to do just that. LMK if it works for you. https://promo.com/tools/image-resizer/. Source: over 2 years ago

Alternatively, you can use an online markdown editor like StackEdit or HackMD. - Source: dev.to / 5 months ago

Use https://stackedit.io/ in the browser :). Source: 7 months ago

Markdown is awesome! But, when writing 1000 words+ articles, I quickly feel the need for a better experience. For years, I’ve used StackEdit — an open-source, in-browser Markdown editor — for editing all kinds of long-format Markdown text. That said, given my recent experience with WYSIWYG editors, I thought I could do something better. - Source: dev.to / 11 months ago

This is especially annoying as when I export from stackedit.io to HTML, then it just cuts off anything which is outside the greyed in code window! Source: 11 months ago

StackEdit[0] pretty much perfected what I needed out of a markdown editor - I just need somewhere to write my tickets/docs that wasn't Github so that I could format it properly while writing. I still use it from time to time [0]: https://stackedit.io/. - Source: Hacker News / 12 months ago