An image is an element like any other: it goes into any stack, of a simple block, a card, a tab or a step. You pick it in Joomla's media manager.
The alternative text
The Opus image field carries the alternative text and the decorative image box. The alternative text describes what the image shows, for those who cannot see it. Leave it empty only if the image is purely decorative, and tick the box in that case.
Weight and dimensions
Under the file path, Opus shows its dimensions and its weight. It warns you when the image is heavy, or much wider than the space it will fill. Weight is not set in Opus, it is observed: resize the image before placing it, in the media manager or with Iris.
The settings behind the cog
| Setting | What it does |
|---|---|
| Caption | The text shown under the image, and repeated under the enlarged image in the viewer. It is not the alternative text: the caption comments, for everyone. |
| Format | Free keeps the file's proportions. Panoramic 16:9, Landscape 4:3, Square and Portrait 3:4 crop, so that all images in a row have the same shape. |
| Fit | When a format is imposed: Fill crops the image, Whole shows all of it and leaves empty space on the sides. |
| Framing | Framed (the template's border and corner), Bare, Round, or Icon, which removes both and sets an icon size of 3 rem. |
| Width | Full width of the block, or Capped by a Maximum width, in rem or in pixels. The rem follows the visitor's text size: that is what a photo needs. The pixel suits a logo or an icon placed at an exact size. |
| Placement | In a card only. In the body, the image behaves like the other elements; As a banner, it sticks to the top edge of the card, without margin. It must then be the first element of the stack. |
| Loading | Deferred for everything below the first screen. Immediate for the image at the top of the page: otherwise it arrives after the text, and the page jumps. |
No style in the module
The border, the corner and the shadow of an image belong to the template. Opus picks a framing, and the template says what it looks like. Changing the site's design therefore changes every Opus image, without touching a single one.
Up to date for Opus 1.5.