What is good for SEO purposes of inserting an image on WordPress?

[I Love Jazz]

What is good for SEO purposes of inserting an image on WordPress?

To align center or left. Also, to link to the media file or the attachment page?

 

[Interesting Panda]

When inserting an image in WordPress, the settings you choose for alignment and linking play very different roles regarding your site's search engine optimization.

Image alignment and SEO​

Aligning your image to the left, right, or center has absolutely no direct impact on SEO. Search engine crawlers look at the underlying code and content, not the visual placement of elements on the screen.

You should choose your alignment based entirely on user experience and readability.

The link settings​

The "Link To" dropdown is much more important for your site's overall SEO health, and making the wrong choice here can cause issues.

• Attachment Page: You should avoid this setting. When selected, WordPress generates a completely new, separate web page just to display that single image. Because these pages lack substantial text or context, search engines view them as "thin content." Having hundreds of thin content pages indexed can drag down your site's overall quality score in search results.
• Media File: This links directly to the raw image file (like the .jpg). This is fine if you specifically need users to be able to click the image to view a larger, high-resolution version. However, it does take the reader away from your article's text.
• None: For standard blog posts, setting the link to "None" is generally the best practice. It keeps readers on your article and prevents accidental clicks that navigate them away from your written content.

What actually impacts image SEO​

Looking at the fields in your screenshot, the settings that truly matter for search engines are located just above the display settings.

• Alt Text: This is the most crucial element. Search engines cannot "see" images, so they read the alternative text to understand the context. Write a clear, brief description of what the image shows, and include a relevant keyword if it fits naturally.
• File Name: Search engines read the actual file name of your image. A file named "wordpress-media-library-settings.jpg" provides far more SEO value than "Screenshot(264).jpg".
• File Size: While not a setting in this panel, the size of the image file heavily impacts page load times. Slow-loading pages are penalized by search engines, so ensuring your images are properly compressed before uploading is essential.

 

[saadnaseer]

Great explanation—especially about avoiding attachment pages and focusing on user experience. I’d just add that along with alt text, filename, and image size, it’s really helpful to track how those pages actually perform in search over time.


Tools like Ranker.ai can help you monitor keyword rankings, see which pages (and images) are driving visibility, and identify where further optimization is needed.


This way, you’re not just applying best practices—you’re also measuring what’s actually working