You can achieve this with a template override of the file blog_item.php by changing the line

<?php echo LayoutHelper::render('joomla.content.intro_image', $this->item); ?>

to

<?php echo LayoutHelper::render('joomla.content.full_image', $this->item); ?>

I've never had a use-case, so far, where I want different images.

Ok, but others want to have different images. Having a small teaser image which is not shown in the article is quite common feature.

I've never had a use-case, so far, where I want different images.

Ok, but others want to have different images. Having a small teaser image which is not shown in the article is quite common feature.

There is another option when the article does not have an image, i.e. when you view the article, there is only text, no images, but in order for your article to be shared on social media, you need to add an image and for this the option "do not display image" on the "images and links" settings page would be very useful.

I think it would be a good idea if there were more options in the interface to handle images and articles with requiring php/css code. Would the three comments above cover most use cases:

1. One image uploaded to article. Acts as both preview and main article image (without requiring two different uploads of the same image.
2. Current situation - requires two images, where preview image is different from article image.
3. Image uploaded, but there is an option for it not to be displayed on the article. However this image appears when the article is shared on social media.

There is another option when the article does not have an image, i.e. when you view the article, there is only text, no images, but in order for your article to be shared on social media, you need to add an image and for this the option "do not display image" on the "images and links" settings page would be very useful.

1. Not true that you need an image
2. Facebook et al will always scrape your page to find an image. So even if there was a way to prevent the article image from being used Facebook et al will just grab the next image it finds on the page. In other words this option would not do what you expect. If you want to control which image Facebook et al will use then you need to define an og:image and there are many many ways to achieve this.

Not true that you need an image

Facebook et al will always scrape your page to find an image. So even if there was a way to prevent the article image from being used Facebook et al will just grab the next image it finds on the page. In other words this option would not do what you expect. If you want to control which image Facebook et al will use then you need to define an og:image and there are many many ways to achieve this.

for Joomla there are many 3rd party plugins that automatically take information from the Images and Links tab, so og:image can be used based on the image that is selected in the Images and Links tab, also Facebook takes the first image it finds on a website and this is most often the website Logo, and I want to specify a custom image for my article that would be displayed in the Facebook link instead of my website logo.

1. Not true that you need an image

2. Facebook et al will always scrape your page to find an image. So even if there was a way to prevent the article image from being used Facebook et al will just grab the next image it finds on the page. In other words this option would not do what you expect. If you want to control which image Facebook et al will use then you need to define an og:image and there are many many ways to achieve this.

for Joomla there are many 3rd party plugins that automatically take information from the Images and Links tab, so og:image can be used based on the image that is selected in the Images and Links tab, also Facebook takes the first image it finds on a website and this is most often the website Logo, and I want to specify a custom image for my article that would be displayed in the Facebook link instead of my website logo.

Image uploaded, but there is an option for it not to be displayed on the article. However this image appears when the article is shared on social media.

Webmasters have been asking for this option since they started creating pages on Social Media, but Joomla still doesn't have a don't display image option, which is very disappointing and every time someone asks a question like this, everyone is advised to use overrides for CSS and all that, which is an even more frustrating experience using CMS.

They tell every person who asks about this option over the years: "You are the only one who needs this, so this option will never be in the CMS", which makes the CMS less convenient for daily use.

Ok, but others want to have different images. Having a small teaser image which is not shown in the article is quite common feature.

It is more about the same image in different sizes, not different images.

The feature request is about automatic resizing, kind of: user upload 1 image, and it is automatically resized for the teaser view.

Currently it is not really possible, unless we do resizing with CSS.
Or something like Brian suggested in his comment #45453 (comment)

It is more about the same image in different sizes, not different images.

The feature request is about automatic resizing, kind of: user upload 1 image, and it is automatically resized for the teaser view.

I've never had a use-case, so far, where I want different images. Instead, I'd like the option of when I'd add the larger image, for the small image to be automatically populated. As a new casual user, I'd like to have this option in the menu, rather than having resort to CSS snippets.

I requested this feature 5 years ago and described it well: #27813

Image uploaded, but there is an option for it not to be displayed on the article. However this image appears when the article is shared on social media.

I also requested a don't display image option 5 years ago and described it well: #27768

Joomla still has these problems with adding an image to an article, which is very frustrating when you have already added over 10 thousand articles to the website in 300 different categories and over 600 tags.

I want to make adding images more automated so I don't have to add custom HTML code to my articles every time because I still don't use the Images and Links tab to add images to my articles.
Joomla still doesn't allow me to automate the process of adding images to articles.