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Lesson 30: Images – Website SEO Tutorial

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Images, graphics and other visual material influence the search engine optimization in several ways. On the one hand, the use of images leads to a higher dwell time and a lower jump rate, because complicated facts can be displayed simplified or because they graphically underline a topic. The Google image search is also a traffic tool, which can not be underestimated, which can be fully exploited by simple optimization.

Lesson 30: Images - Website SEO Tutorial - Lesson 30: Images - Website SEO Tutorial - Lesson 30: Images - Website SEO Tutorial - Length of Stay

What is also a side-effect of images: appealing images, high-quality infographics or useful animations can serve as a supplier of backlinks. Infographics are particularly suitable for this, since they are often shared in the course of content marketing. In social networks, images and infographics often serve as magnets for high-quality traffic.

When using images, you should always ensure that the file size is as small as possible, because images are still the PageSpeed risk number one. In addition, the name should be “talking”, meaning something about the picture.

  • Good names for image files: “seo.jpg”, “webdesign_berlin.jpg”, “coca-cola.jpg”
  • Bad names for image files: “00000.jpg”, “abx23kd.jpg”, “funny.jpg”

Images are provided in HTML with the following meta-specifications. If possible, all these meta-statements should be used to make an indexing and evaluation of the file as simple as possible:

<Img src = “seo.jpg” title = “Search Engine Optimization” alt = “Image SEO” width = “400” height = “300”>

The img tag indicates that an image file is to be included. The title tag defines a title that is usually visible only to the search engine crawlers.

The alt tag describes what is shown in the picture. This information was intended for people with a visual impairment, but is also used for SEO, as the search engine can describe the content of the image.

The width and height specifies the width and height of the image in pixels, which is less interesting for the search engines because they can extract the image size directly from the image itself.

Rather, this information serves the benefit of the visitor. If a page is too slow and an image is being loaded, this may cause the page to jump while watching. This is annoying for the visitor of the already reading, since then he may need to search the line again. If the size has been fixed before, the page will be left blank when the image is loaded.

In general, it can be said that the images, which should be eg article pictures or should serve as a background image, should be saved in the .jpg format, since smaller losses do not matter and the size of the files is kept small. If transparency or loss-freeness is demanded – as with logos, for example – the PNG format (Portable Network Graphics) is the best choice.

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