Images Can Boost Rankings

Using lightweight images strategically is important for mobile websites. Yet astonishingly, WordPress sites are using 4.8% more images by kilobytes in 2018 than in 2017. Here are seven ways to improve your SEO by reducing image size and using those images in a meaningful way that may help your search rankings. Read on to find out how Images Can Boost Rankings.

Download Speed and Semantic Meaning

One of the top concerns for mobile websites is speeding up the download speeds. An easy win is optimizing images. Another easy win is using images to communicate what the content is about.

Images are useful for breaking up the text and making the content easier to scan. That’s a user experience feature. You can still achieve a better user experience and boost your SEO strategy with images.

So rather than just use images to make a web page easier to read, it’s possible to do both by integrating the images with the content in a way that downloads quickly on mobile devices.

These tips will decrease download speed and help the search engines better understand what your content is about.

These are seven ways to boost your rankings with images:

  1. Simplify images
  2. Avoid mixing photographic images with fonts and graphic elements
  3. Save images in the correct formats
  4. Avoid the use of too many colors
  5. Compress images
  6. Make images support the content
  7. Give images meaningful context

WordPress Image Size Trends

The  year over year trend in WordPress image size shows that images are on average 4.8% higher in 2018 over 2017, according to

Images Can Boost RankingsWordPress image sizes have increased by 4.8% year over year from 2017 to 2018.

Statistics for the three month average ending August 15, 2018 show an increase of just .5%. This might be an indication that publishers are starting to shrink image sizes for mobile devices. Will your site be a part of this trend?

Illustration showing that WordPress images might be starting to trend to smaller sizes
Three month statistical trend indicates that WordPress image sizes may be starting to become smaller.

Simplify Images

Images that feature a lot of patterns, gradients, and small details tend to create larger files. For example, an image that has a spider web with dew on it or a person wearing a herringbone jacket will create a larger file than a more simpler image. Images with gradients or tiny details also tend to create larger file sizes.

Half the battle of using images with small file sizes can be won by simply choose simpler images.

Avoid Mixing Image Types

Images that are photographic and those that consist of illustrations (or letters) do not
mix well. Choose one or the other.

Images that are a mix of illustrations and fonts (letters/words) work well together. Fonts and photographic images do not work well together.

If you must use a photograph for your featured image or within the body of the content, do not use fonts/letters in the image in order to save file size.

Drop shadows and gradients make .png files larger. Try to avoid their use in .png illustration type images.

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If you must use a drop shadow, try not to make it a major feature of the image. I use drop shadows in .png files but by making them a minor feature they don’t substantially increase image file sizes.

Save Images in Correct Format

This is one of the most common mistakes. Save image files as jpg. Save illustration type files as .png files. You can also save them as .gif files but some sites classify .gif files as animation and will sometimes superimpose a “play” button on top of your image.

Avoid the Use of Too Many Colors

This tip applies to illustration type files and photographs. The more colors are in an image the larger the file size. Most people won’t notice if you desaturate the image.

For illustration type images, you can save file size by combining similar colors. Most times there is no need for eight shades of red in a single image. Using one shade of red is often enough.

For photographic images try to desaturate the image just a little bit. Or you can try choosing images that don’t feature too many colors.

Compress Images

This is the most important tip for saving image size. Do not use HTML or CSS to shrink a 1200 pixel image to 400 pixels. While the image may render as 400 pixels it will still carry the weight of a 1200 pixel size image. There is no weight saving.

It is a common mistake to use a large image size for a small image. Additionally, if an image is 900 pixels wide, would it look any worse if you shrunk it to 800 or 600 pixels?

Make Images Support the Content

What’s important is not the size of the image but what that image adds to how the user understands the content, whether it’s a product image or a step by step illustration. What matters is the content. Never use an image to simply make the page pretty. Always make that image support the content.

Give Images Meaningful Context

Consider adding alt text to your images to explain what the image is to blind visitors to your site. This might also help your SEO. Additionally, consider adding captions to your image to explain how that image relates to your content.

Images Are Important to SEO

Images can be used strategically for ranking. Properly considered, images can rank in position zero. Images can also rank in image search and lead to more visitors. Images can also help search engines understand what your content is about.

Don’t treat images as an afterthought. Images are content. All content should be carefully considered as part of an SEO strategy.

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