SEO Basics: How to Optimize Images, Alt Tags + Page Speed (SEO 101 Part Two)

This post originally appeared on The Lean Green Bean blog, as part two of a series. If you missed part one, I recommend checking that out first- SEO 101: How to Increase Organic Search Traffic for Blog Posts. All caught up? Let’s dig in to part two.

You’ve installed an SEO plugin and fill out your title tags religiously. You spend time coming up with a catchy title and include at least one image with each post.

Now what?

alt text example SEO 201: How to Optimize Images, Alt Tags + Page Speed

Alt tags Even if you made a pretty title image, Google can’t read the text. So if you want it to show up in search, you have to help the search engines by filling in the alternative text. I like to do this as soon as I upload the photo so I don’t forget. If you want to go back and fill in alt tags for old photos, you can either click on the photo in each post, or go to your media gallery.

Don’t stuff this area with keywords! Either use your post title or a relevant phrase or sentence.

If you use a share button for Pinterest, the alt text is often what will show up in the description for the pin, so this is another great reason to be filling it in!

Photo NameThis is an often overlooked area of optimization. Just like you want to optimize the URL for your blog post, you want to optimize the name of your photo, which turns into a URL of its own once it’s hosted on your blog. The name should be short, simple and related to your post.

Title + Description What you fill in here will show up when you hover over the image or while the image is loading.

CaptionYou only need to fill this out if you want a description to show up under your photo in your blog post.


Compressing Photos

Images are one of the biggest culprits for slow page load time, which affects everything from reader retention and engagement to SEO rankings.

Here are three ways you can shrink your images and optimize them for the web:

Plugin optionsInstall the WP Smush.It plugin to optimize your images. This plugin will optimize each new photo you add behind the scenes, and you can also run all existing photos through the plugin in your media library.

smush it plugin SEO 201: How to Optimize Images, Alt Tags + Page Speed

Manual OptionsSave your images as PNG files and upload to Then download and upload to your blog. If you’re creating your image with Picmonkey, like many bloggers these days, you’ll see the formatting option when you hit “save.”

tinypng SEO 201: How to Optimize Images, Alt Tags + Page Speed

Save for Web If you’re using photo editing software like Photoshop, you can choose the “save for web” option.


Page Load Time

According to, “40% of people abandon a website that takes more than 3 seconds to load.”

Test your load time with GT Metrix. GT Metrix also gives you a detailed report of what you can do to improve your speed. I recommend having a developer take a look and help you make the changes. Some of them can be technical and require understanding code.

WordPress can install the WP-Cache 3 plugin. “W3 Total Cache improves the user experience of your site by increasing server performance, reducing the download times and providing transparent content delivery network (CDN) integration.”

Here are 26 other tools to improve your site’s speed.

Want to expedite your blog rankings and traffic? Join my brand new, FREE 6-day Challenge

I’m hosting my very first online challenge and I’d love for you to join us.

SEO Made Simple Free Email Challenge to Boost Website Traffic

SEO Made Simple Free Email Challenge to Boost Website Traffic

seo basics how to optimize images alt tags and page speed

Danielle Zeigler

I'm Danielle, an SEO and Digital Marketing Strategist on a mission to help creatives and entrepreneurs harness their strengths, personality, and energy to easily + authentically market their work to exactly the people who need it.
I specialize in SEO and content marketing as ways to attract clients TO you. I'm extremely introverted, so I'm allll about the inbound marketing!