What is alt image optimization in SEO

This time, I will explain the concept of alt image optimization in SEO measures. Many people who are serious about blogs and homepages say “I want to raise the search ranking” and “I want to study SEO measures”. I will explain the file name of the image considering SEO and the best practice of the ALT attribute.

I want to take SEO measures on the homepage and display it at the top of the search engine. Is it possible to take SEO measures for images? Of course you can! The key to SEO is to set each one carefully. This time, I will explain the SEO measures that can be applied to images.

Alt Image SEO measures for beginner Image SEO that can be used on blogs and homepages such as file names and ALT attributes.

SEO measures you want to implement for images


Images are part of an important SEO strategy. Instead of using images properly, use images that are closely related to the content and set appropriate file names and ALT attributes so that search engines can properly understand and evaluate the contents and pages of the images. Will be able to do it.

The main measures for the images introduced this time are as follows.

Main SEO measures that can be taken for images

  • Use a file name that outlines the image (Example weight-loss.png)
  • Explain the content of the image with the alt attribute (alt = ” how to weight loss In a month”)
  • ★ Use images that are strongly related to the content (do not use unrelated images)
  • Use an image with an appropriate file size and resolution (approximate width 1000px, weight 100-200KB)

There are various settings that can be set for images as well.  First of all, I will explain about SEO measures related to file names.
 

Highly rated images are also displayed on search engines

Rating images are also displayed on search engines.

For example, placing the right images in your content will help search engines recognize the importance

■ An example of searching for “WordPress permalink slug difference”. Images with strong relevance are picked up

■ An example of an image search using “WordPress Permalink Slug Difference”. Images with strong relevance are picked up

In the past, by adding figures and illustrations that supplement the content to articles on this site, the search ranking of the page has improved many times, and we are particular about creating images.

From here, we will introduce the main SEO that can be set for images for beginners.

[Image SEO measures 1] Show the outline of the image by file name

The first SEO measure for images is to use a file name that gives an overview of the image .

Show the outline of the image by file name

For example, for a “small dog” image, name the file in a concise and easy-to-understand way, such as “small-dog.jpg”.

Names like “IMG1122.jpg” and “Screenshot 2021 01 01 11 10” are not recommended. In the case of such a file name, the contents can not be conveyed unless you look at the image, but in the case of “how-to-weight-loss-in-a-month.jpg”, you can guess that it is an image of a weight loss.
 

■ Bad example

  • IMG1122.jpg
  • Screenshot 2021 01 01 11 10.jpg

The file name is also used as a basis for determining the theme of the image. For example, my-new-brown-shoes.jpg is more helpful in determining the theme than IMG1122.JPG.

In the case of a English file name such as “how-to-weight-loss-in-a-month.jpg”, it may be easy to understand from the SEO point of view, but the other language file name often causes troubles in display and operation depending on the environment. , This site uses a hyphen combination of half-width alphanumeric characters instead of other language file names.

[Image SEO measures 2] Explain the contents of the image with the alt attribute

The second SEO measure for images is to enter a text that represents the content of the image in the alt attribute (alt attribute) of the image tag.

"Supplementary explanation of image

The alt attribute is an important text-based item for Google to understand the content of an image.

What is the alt attribute of an image? The image is written in HTML as follows.
<img src = “Image path” alt = “Supplementary explanation of image”>

The alt attribute is used to describe the content of the image file. You can tell Google text-based image information.

Also, if the image is not displayed for some reason, the alt attribute is displayed instead, or it is used when reading a web page with a screen reader.

In the case of WordPress, you can enter the alt attribute in the text box called Alternate Text.

Google’s best practices for alt attributes and filenames The following are Google’s best practices for images of a Dalmatian cat you bring with you.

What is the alt attribute of an image? The image is written in HTML as follows.

Inappropriate example: <img src = “cat.jpg” alt = “”>

○ Appropriate example:
<img src = “cat.jpg” alt = “Cat”>

◎ Best example:
<img src = “cat.jpg” alt = “Dalmatian cat to bring”>

× Inappropriate example:
<img src = “puppy.jpg” alt = “Cat Baby Little cat Retriever Labrador Wolfhound Setter Pointer Jack Russell Teriya Cat Food Cheap Cat Food”>

In addition to alt text, Google uses computer vision algorithms and page content to understand image themes. Also, the image text alternative can be used as anchor text when using the image as a link.

When setting alt text, be sure to use keywords appropriately to create informative and useful content that is in context with the content of your page. Avoid listing keywords in the alt attribute (keyword abuse). This can reduce the user experience and make your site considered spam.

[Image SEO measures 3] Place images that are strongly related to the content

The third SEO measure for images is to “use images that are closely related to the title (theme) and content.”

Use an image that describes the title content (something that makes it easier to understand by looking at the image)

Placing images related to the surrounding text makes it easier for Google to understand the content of the images.

On the other hand, if you carelessly use contextual sentences and images without veins, the search engine will be confused and you will not be able to make a correct evaluation. Try to use images that are as relevant to the context as possible.

■ An example of searching for “WordPress permalink slug difference”. Images with strong relevance are picked up.

In addition, the title is also displayed when searching for images, so if you use an image that is closely related to the title, it will be easier for you to click on it.

Google extracts information about image themes from page content, such as image captions and titles. Whenever possible, try to place the image on the page related to the image theme, close to the relevant text.

[Image SEO measures 4] Use images with appropriate file size and resolution

The fourth is to adjust the file size and resolution to an appropriate level.

The best is “light size, beautiful and clear image”, but there is a trade-off relationship, so it is necessary to balance it.

As a guide, it is said that a width of 1000px and a file size of 100 to 200KB are recommended.

As a guide, it is said that a width of 1000px and a file size of 100 to 200KB are recommended.

However, the file size and sharpness will change depending on the content of the image even at the same 1000px, so this site uses images that exceed 1000px and images that have a file size of 400 to 500KB.


Images that are optimized for speed often result in large overall page sizes, slow page loads, and high communication costs. Use the latest image optimization and responsive image technology to ensure a high quality and fast user experience.
Google Image Search puts the AMP logo on pages that load smoothly and quickly for your convenience. Consider converting your image’s host page to AMP to reduce page load times (if your target page is the page that appears after you click a search result in Google Image Search).
Analyze your site’s load speed with Page Speed ​​Insights and visit the basic pages of the web for recommended methods and techniques to improve your website’s performance.

Add High Quality Photos High quality photos are
more interesting to users than blurry, obscure images. Also, crisp images stand out in the thumbnails of search results, making it easier to get user traffic.

There are several other ways to mark up images and image sitemaps, but I’ll omit them here because it’s a bit technical. If you are interested,please refer to “

SUMMARY:

It is a summary. This time, as an image SEO measure, I explained the image file name and ALT attribute best practices that take SEO into consideration.

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