1. Is there a way to auto-post (sharing) with a WP shortcut link (provided by Jetpack) instead of full link?
Not at the moment, but that’s on our radar. You can follow our progress here:
https://github.com/Automattic/jetpack/issues/261
2. Is there a way to change or prevent the picture when posting to social media?
When you share a post on Facebook, or when Jetpack Publicize publishes a post to your Facebook page, Facebook crawls the page and looks for Open Graph meta tags in the head to build a complete post preview (with an image, title, description, …).
Jetpack automatically creates these Open Graph Meta tags for you, and will generate an image tag based on the images you’ve inserted into your posts.
If you’re not happy with the images selected by the Jetpack plugin, you can use another Open Graph plugin instead. As soon as you enable another Open Graph plugin, Jetpack’s Open Graph Meta Tags will be disabled.
Another alternative would be to use the jetpack_open_graph_tags filter to modify the output of the Jetpack OG Meta Tags.
Here are a few examples of how you can use that filter:
https://jetpack.me/tag/open-graph/
3. Is there a way to control the content how much allow to post?
You can use the Publicize box appearing right above the Publish button to customize what’s going to be pushed to Facebook. If you set a custom message there, that’s what will be displayed on Facebook.
4. Like feature seems long loading on live post. How do I fix it?
Could you post your site URL here, so I can have a look?
If you want it to remain private, you can also contact us via this contact form:
https://jetpack.me/contact-support/
