SEO
Alt text
Alt text, also called alternative text, is the text displayed in place of an image. This text matters in search engine optimization (SEO) because it also tells Google what can be seen in the image.
For accessibility, too, it is recommended to always fill in the alt tag so that screen readers can describe the content of an image. More about alt-Tags and how to use them can be found in the “Alt Decision Tree” from the W3C.
A good alt text describes what can be seen in the image in a concise sentence. The file name is not suitable for this: „dsc08277“ means nothing to either a search engine or a screen reader.
Purely decorative images do not need alt text; an empty attribute is correct there. WordPress stores it in the Media Library for each image. Caution: some Page Builder copy the text when it is inserted into the element; later changes in the media library then no longer take effect.
How we continuously optimize websites for search engines is shown by our SEO support.
Other topics
Interested in other topics? Here we have a few more suitable explanations.