WordPress SEO for Images: 6 Tactics to Optimize Photos

Quick Summary: Image optimization is often overlooked in SEO plans that focus on text-based pages and posts.

hand with magnifier on search engineIn this article, we’re sharing our most essential tactics on WordPress SEO for images so you can boost your rankings and improve your organic traffic.

Why do the images on your WordPress site matter for SEO? Let’s start with why images matter for humans—readability.

If you want people to stick around long enough to read your whole, your content must be easily readable.

That’s where images come in.

Why Image SEO is a Top Priority

Image optimization is often overlooked in SEO plans that focus on text-based pages and posts. Still, if you aren’t making image SEO a key part of your marketing strategies, you may be missing opportunities to increase engagement, boost search engine rankings and build brand awareness.

Incorporating images help your readability and SEO by highlighting important information and breaking up your text. This makes it easier for search engines to crawl and humans to read.

One more thing to consider is that web pages that contain images and videos generate 94% more impressions than pages with text alone.

YouTube video

Image SEO Improves Search Rankings

Visual content can improve a site’s rankings, but that depends on the images and videos that appear there. Purely decorative elements don’t do much for a site’s visibility, but useful, relevant images do, especially when paired with relevant, keyword-rich text. Properly optimized, high-quality images inserted at appropriate points can amplify the message of a post or page and boost the site’s rank in multiple ways.

The text has always been an essential part of most websites, and text-based pages, posts, and documents still play an influential role in building a site’s rankings in Google and other search engines.

But visual content of all kinds – images, slideshows, infographics, and videos – draw viewer interest in different ways, working with text to create a synergy that generates more engagement and SEO value than text alone can do.

Website visitors want the best possible experience online – one that offers them the most relevant information in the most accessible format, delivered in the shortest amount of time. And while Google’s much-amended algorithms lean heavily toward rewarding meaty, long-form articles that include long-tail keywords and natural language, the world’s largest search engine also loves images – and rewards sites with the right kind of images, properly optimized, in the same way.

When Google crawls webpages for indexing, it looks for keywords and how and where they are used, both in text and visual content. And just as it does with text, it considers the value that content adds to the site and the experience of users who visit. The same criteria apply: images need to be high quality, optimized for SEO in multiple ways, mobile responsive, and relevant to a user’s search query. Visual content that meets those standards can enhance the ranking potential of the page or post to which it’s attached, and the content itself can generate quality backlinks as it’s shared and searched with tools like Google Image Search.

And nearly ⅓ of internet marketers worldwide say that visual images are the most important type of content for their business. Images encourage people to stay and read—and share—your articles. And yes, social shares do help with SEO.

The other reason images matter for SEO is that they give search engines more content to crawl and index.

We talk about alt text below, which strengthens the message of your articles with search engine spiders and improves the accessibility of your website.

Looking for some help with your image SEO? Our team of expert digital marketers can help you get started. 

Where to find the best images for your WordPress website


Total stock image. Can you tell?

While using cookie-cutter stock images may be tempting because they are so easy to find, please try to use original imagery on your website. Google loves original content, including images.

If you don’t have original images to use, there are plenty of places to find free pictures and imagery that don’t feel so stock-ish.

SplitShire and Unsplash are two websites for finding unique images. Hubspot put together a nice list of other free websites for stock photos.

We often use Shutterstock for images because it has the most extensive imagery database and includes photos and graphics.

We search their database just like we search in Google for information and usually find exactly what we need for images.

6 Image SEO Tips for WordPress

Images make your website more exciting and attractive — and they play a valuable role in your site’s SEO.

The process you use to name and tag your images is just as necessary as the words you use in links and the search terms you incorporate into page and blog post headlines.

Make your images a part of your SEO strategy by paying careful attention to the keywords you associate with those images, file sizes, and other factors below.

1. Optimize Image Size and Quality

Uploading large images to your website can make your site sluggish. Make sure your site loads quickly by optimizing the size of your images.

Generally, images should be smaller than 100 kb and resized to the size you want them displayed. We like this plugin to help resize images quickly.

Image SEO Plugin: EWWW Image Optimizer.

Your website’s load time and readability are huge factors that optimizing your images for SEO will help with. A free tool you can use right now to check your website’s speed is Pingdom.

If you’re worried about your images slowing down your pages, check out our guide on how optimizing images can speed up your website.

[Bonus: here’s how to go beyond images and improve your website’s Google PageSpeed score.]

Think about your own experience…girl waiting for slow website to load

What is your first thought if you go to a website and sit for just a few seconds while it loads?

You have little patience for a slow website and a good reason if you’re anything like me.

There are just too many websites out there for us to sit around and wait for one to load.

Leave it, and move on to the next.

Google and your visitors want your website to load faster than they can blink. If your website is slow to load and other similar websites load faster, those other websites could outrank you.

And this is just one of many reasons why image size and quality throughout your website matter.

While editing your image for size, you should also rename the image. Keep reading.

WordPress Image SEO: Rename Files.

2. Rename Every Image Before You Put It On Your Website

Whether your image comes from, it will probably have a name that won’t do you much good from an SEO perspective.

Google wants to know what the image is about without even looking at it.

WordPress Image SEO: Default Image File Names.For example, if you downloaded the image from an image bank, it probably has a file number as the image name.

If you uploaded it from your camera, it might have a filename that starts with three letters and several numbers.

Either way, you’ll need to rename the photo to something more useful before uploading it to your website.

Give the photo a name that includes a search term and keywords that are relevant to your website.

Using your main keyphrase at the beginning of the file name is best.

WordPress Image SEO: Enable Media Replace plugin. Image SEO Pro Tip

If you forget to rename your image before uploading it, you’ll have to rename it on your desktop and upload it again.

You can also use Enable Media Replace, a handy WordPress plugin that helps you replace images in your website’s media library without having to delete them manually.

3. Use Hyphens in Image Names

When you rename photos, remember that using hyphens between the terms separates them, while underscores join them.

So if you want to boost your SEO for the term “red plaid shirt,” name the relevant image “red-plaid-shirt.”

If you use a “red_plaid_shirt,” Google will read it as “redplaidshirt” — and will search right over it.

(The same thing happens in URLs, too, so make sure your URLs use hyphens and not underscores.)

Here’s a quick video about that hyphens vs. underscores—

YouTube video

4. Keep Image SEO Simple

keep image seo simple professor doing math

KISS: Keep Image SEO Simple

Don’t get too fancy when naming an image, and don’t overload the image name with keywords. If it’s your company logo, a simple “XYZ-company-logo” is fine.

Treat image keywords like link keywords, and use different terms over time if necessary.

WordPress Image SEO: Title & Alt Fields.

5. Fill In the Title and Alt Fields

Though it may be small, alt text serves a considerable purpose in web design accessibility and SEO (unlike meta tags).

What the heck is the alt text, you ask? It stands for “alternative text.”

Our friends at Moz define alt text as follows:

“Alt text (alternative text), also known as “alt attributes”, “alt descriptions,” and technically incorrectly as “alt tags,” are used within an HTML code to describe the appearance and function of an image on a page.”

These fields are attached to your image after you’ve uploaded it to your website. Use a short sentence or keyphrase to describe the image, including the relevant SEO keywords you want Google and other search engines to see.

WordPress Image SEO: Image HTML.Alt text displays when there’s a problem loading the image, and special browsers that read websites for visually impaired visitors use alt text to describe what they “see.”

If you’re unsure if you’re doing your alt text correctly, contact us for help.

But simply put, your alt text should describe what is in the image so both search engines and people can make sense of it.

6. Make Changes When You Change Your SEO Strategy

man searching for seo strategy on cell phone

Sure, this is a stock image. But it makes this blog post more readable.

If your organization decides to revamp its SEO strategy, don’t forget that updating images must be part of the process.

It is an SEO strategy, after all.

Go back and change the ALT tags, and consider uploading newly renamed files.

While Google doesn’t disclose the weight images have on search results, I know traffic from Google Image searches resulted in about 15 to 20 percent of the traffic on my website.

That’s a big deal — because if people aren’t going to my site, they’re going somewhere else.

SEO is a constantly changing science, but remembering that images have a role to play will help you get the most out of your SEO efforts.

Pick relevant images, name them correctly, and fill in the necessary fields to get your images to work for you and help your website rank.

Bonus: Make Video Content Searchable

Video is arguably the most popular visual content on the web, and most videos can’t be directly optimized using a website’s tools because they’re generally embedded from another site. To make video content more searchable, optimize it on the site where it appears, such as YouTube or Vimeo. Consider creating and posting a transcript and a video sitemap to aid Google’s indexing.

Image and video content consistently outperforms text-based pages and posts in searches and engagement. In today’s content marketing world, images reign – and image SEO work with text-based content strategies to increase engagement and boost search rankings.

WordPress Image SEO: Google Images.

Final Thoughts

You can download an image from Google (assuming you have the rights) and upload it directly into WordPress without changing the image file.

But what if that image file size is too large, doesn’t have context for the visually impaired, or is named something out of context? Your SEO won’t reach its full potential.

Rock-solid SEO involves a bunch of factors, but you can consider image SEO “low hanging fruit.”

In other words, optimizing images for SEO in WordPress can be simple if you follow our tactics and advice above.

Further Reading

Yoast is one of the most popular SEO WordPress tools available today and is used by hundreds of thousands of WordPress websites.

We looked to Yoast for their best practices when it comes to image SEO, and here are a few articles you can use for further guidance on the topic:

Continue Reading

Start Your Image SEO Project Today

Image SEO doesn’t have to be complicated and you don’t have to do it alone. 3 Media Web is here to help you get started with a team of digital marketing experts.