Image name is Important for SEO

    Hide any text, especially any important words in graphics. Search engines can only read text.
    Give each graph a descriptive file name.
      Bad: bild05.jpg
     Good: eiffelturm.jpg

    Give each graph a meaningful alternative text to describe its content in context. The alt text is not only important for visitors who have disabled the loading of images, but is also evaluated by search engines, such as by Google. Do not misuse the alt text but not to keyword spam accommodate it.

    Wrong: <img src="eiffelturm.jpg">
    Correct: <img src="eiffelturm.jpg" alt="Eiffelturm">
    Clever: <img src="eiffelturm.jpg" alt="Eiffelturm Paris">
    SPAM: <img alt="Paris holiday hotel room src="eiffelturm.jpg" Unterkunft">

    If an image is used as a link, the alternative text is especially important because it becomes the anchor text.

    Generally, you should look for keywords in alt-text to the following:
        If your picture contains text, it should also occur in the alt attribute, and not a completely different alt text can be specified.
        The old texts of layout graphics (backgrounds, gradients, blind gifs, etc.) should not contain keywords. Right here is alt = "".
        A graphic that is integrated on multiple pages should not have different old texts, but always the same.
    If it can not be avoided, that headline is a graph, then draw it out using HTML as such, even if the display is not affected. Also do not forget the alternative text:

    Wrong: <img src="ueberschrift.gif">
    Better <img src="ueberschrift.gif" alt="Überschrift">
    Perfect: <h3> <img src="ueberschrift.gif" alt="Überschrift"> </ h3>

    If the graphic is part of a graphic layout, it may be that through the award as HTML heading spacing or gaps occur. In this case, you must still use CSS indoor and outdoor distance to 0:  h3 {margin: 0; padding: 0}