Image Alt Test
What is it?
Check if images on your webpage are using alt attributes. If an image cannot be displayed (e.g., due to broken image source, slow internet connection, etc), the alt attribute provides alternative information. Using relevant keywords and text in the alt attribute can help both users and search engines better interpret the subject of an image.
Pass rate:
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Top 100 websites: 78%This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months).
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All websites: 29%This value indicates the percent of all websites analyzed in SEO Site Checkup (500,000+) in the past 12 months.
| 2021 | 71% |
|---|---|
| 2022 | 76% |
| 2023 | 71% |
| 2024 | 78% |
100
75
50
25
0
How do I fix it?
In order to pass this test you must add an alt attribute to every <img> tag used into your webpage.
An image with an alternate text specified is inserted using the following HTML line:
<img src="image.png" alt="text_to_describe_your_image">
Remember that the point of alt text is to provide the same functional information that a visual user would see. Search engines, users who disabled images in their browsers and other agents who are unable to see the images on your webpage can read the alt attributes assigned to the image since they cannot view it.
Learn more about optimizing images for SEO.
