This post explains the differences between the image alt attribute, image title text, and image file name, and provides tips on how to optimize each.

HTML img fügt ein Bild oder eine Grafik in HTML-Seiten ein. Nur zwei Attribute werden gebraucht: src, der Pfad zum Bild und alt, ein alternativer Text für Browser ohne Bilddarstellung.

ALT Alternate text Optional alternative text as an alternative to the graphics for display in text-only environments. The alt text can contain entities e.g. for accented characters or special symbols, but it can't contain markup. The latter is possible, however, with the FIG element. ISMAP.

See online demo and code What if the image does not load? The alt attribute. There may be a few reasons that images does not load, for example: The specified path in img src tag is not correct.

Alt-texts: The Ultimate Guide. Published 15 October 2017, by Daniel Göransson. This post contains everything you need to know about alt-texts! When to use them and how to perfectly craft them. By me, Daniel, a web developer with vision impairment who use a screen reader in my day-to-day life.

Alt text has a secondary purpose, too: it can help you, the author, make sure that the image you’ve selected communicates your intended purpose, which can help improve the overall quality of your content. You do not need to include alt text for images and graphics that are purely decorative. However, you should include an empty alt attribute.

If you care enough about accessibility to want to add alt text, you shouldn't be using background images with the title attribute where you should be using the img element with the alt attribute to begin with just so your pages can load faster. Loading faster at the expense of accessibility does not result in a better UX for those who rely on it.

dream hunter, if you are proposing an alternative way of centering an image using css, then you need to expand your question a bit. You could explain how and why this proposed alternative would be a better way to achieve the questioner's goal, perhaps including a link to the relevant documentation.

Wenn Sie ein Beispiel wünschen können Sie sich hier eine alte Programmierung für meine Anfangsseite ansehen. Sind irgendwo Fehler oder habe ich wichtige Dinge vergessen? Dann füllt doch schnell dieses Formular aus und schickt es mir zu, damit ich das beheben kann!

Mit "alt" legen Sie einen Alternativ-Text fest, der angezeigt wird, wenn das jeweilige Bild nicht geladen werden kann. Dieses Attribut sollten Sie immer festlegen, wenn Sie Bilder mit HTML einfügen.