Hey there Sea Changers and welcome to my series of affiliate marketing 101 how tos as we explore how to add images to a blog post. We all know the old saying- A picture paints a thousand words – and when it comes to affiliate marketing and blogging, this cannot be more true.
Afterall – we can write all we like about a particular product but a simple picture of it in use can really push interest to another level. Furthermore, an image of you as the reviewer using the product can provide any necessary authority as well.
So, if adding images is something that you are wondering about, or need some help with, read on…
- Choose High-Quality and Relevant Images
- Optimize Your Images
- Configure for SEO
- Consider Image Placement
- Adding the Image to A Blog Post
How To Add Images To A Blog Post
As you have probably guessed, adding images to blog posts is more than simply taking a photo and pasting it into your editor. In fact, that is the easy part.
So here I will take you through everything you need to know and understand about adding images to a blog post.
1. Choose High-Quality and Relevant Images
This first part is the most important and where you need to really pay the most attention. In the simplest of terms then, you need to ensure that the images you use are high-quality and relevant to the content of your blog post.
The biggest mistake that many new bloggers make is adding images that don't really match the content. And just because it matches the niche, doesn't always mean it matches the blog post either.
For example, say your site is about dog grooming and you are reviewing a pair of dog clippers. A stock photo of kids playing with a dog whilst discussing the specs of the clipper is close, but may or may not not really resonate with a reader thinking of purchasing that particular brand.
Additionally, the images must also be on “high quality” (we will elaborate on this later) and these create a positive user experience and keep visitors engaged with your content. Avoid:
- Blurry or pixelated images
- Badly cropped images, overexposure, or underexposure
- Images with cluttered backgrounds that distract from the main subject
- Images that are over-editing with excessive contrast or unnatural colors
Where to Find High-Quality Images:
- Your Own Photos – Original images make your blog unique and authentic. They help personalize your content and make it more relatable to your audience. To be honest, if you can take a good photo and crop with well, then this should be your first port of call.
- Stock Photo Websites – Sites like Unsplash, Pexels, and Pixabay offer high-quality, royalty-free images – still, be sure to check the licensing terms before using them. Modify stock photos to make them more relevant if you can (and it is within the licensing terms) otherwise the risk here is that your image looks like every other blog on the internet.
- Custom Graphics – Tools like Canva or Adobe Express allow you to create branded graphics, infographics, or social media visuals that align with your brand identity.
If you’re using images from external sources, ensure they are properly credited according to their license.
- For Creative Commons images, provide attribution as required.
- Avoid using copyrighted images without permission. Check licensing terms before using any external images.
As I write this, more and more AI options are available that can create unique, realistic images that can really help enhance your post if you can't find a good option from the above. The trick here is to find a good creator that will be able to make something really relevant, so take your time to learn how to do this before throwing half baked AI images onto your blog roll.

2. Optimize Your Images
Once you have that perfect image, the next most important job is to optimize it for online use. We discussed above the need for high quality images. However, you must be aware of the difference between high quality and high resolution.
An image can be high resolution but still poor quality (e.g., a well-sized but poorly lit or blurry photo). Likewise, an image can be high quality but low resolution (e.g., a well-composed image that looks good at small sizes but pixelates when enlarged).
For blog posts, you need both high-quality (visually appealing) and high-resolution (sharp, scalable) images for the best user experience.
Image File Formats
The format of your image affects its quality and loading speed. Hence the best way to ensure that you can have both high quality and high resolution images all the while keeping the size small is to choose the right format. The following formats have been designed specifically for use as online media:
- JPEG – Best for photographs and images with lots of color. It provides good quality at a smaller file size.
- PNG – Best for images requiring transparency (e.g., logos, illustrations). However, PNG files are typically larger than JPEGs.
- WebP – A modern format that offers high quality with smaller file sizes compared to JPEG and PNG. WebP is increasingly supported by browsers and helps improve loading times.
Image Optimization Options
Regardless of the file format that you have used, there are some instances – such as extremely high resolution photographs etc. – where image files are still too large for online use. To assist here, there are some other optimizing options that can be undertaken to ensure fast loading speeds without sacrificing quality.
These include:
- Resize images before uploading using tools like TinyPNG or ImageOptim.
- Compress images without losing quality using WordPress plugins like Smush or ShortPixel.
- Use responsive images so they adjust to different screen sizes, ensuring the best display on mobile and desktop devices.
3. Configure for SEO
As we have discussed above, large image files slow down your website, negatively affecting user experience and SEO rankings. However, they are not the only things we can do to ensure that our websites maintain the best chances of ranking on search engines.
Image File Names
Just as you use keywords and relevant content in your blog posts, using the same behaviors when creating file names helps search engines understand what the image is about, improving your blog’s SEO.
Instead of generic names like IMG_1234.jpg
, rename your files with descriptive keywords relevant to your content. Example: best-pellet-smoker-recipe.jpg
is more SEO-friendly than photo1.jpg
.
Alt Text
Much like Metadata for a blog post, alternative text (alt text) is a key element for images as they help search engines understand the image content. Additionally, they also help describe an image for visually impaired users which is another green tick for search engines.
Best practices for alt text:
- Be descriptive but concise (e.g., “Grilled steak on a Traeger pellet smoker”).
- Avoid using “image of” or “picture of”—just describe the content.
- Include relevant keywords naturally but avoid keyword stuffing.
Captions
Captions provide additional context for images and improve engagement. If an image needs an explanation, include a caption below it.
- Captions can summarize an image’s relevance or highlight key points related to your content.
- Ensure captions are clear and concise without being redundant.

4. Consider Image Placement
Images should enhance the readability of your blog, not disrupt it. Strategically placed images break up large blocks of text, making content more visually appealing and easier to digest. They also reinforce key points, provide visual explanations, and evoke emotions that can strengthen the message of the post.
Well-placed images, such as feature images at the top and in-content visuals to illustrate key concepts can significantly improve reader retention and click-through rates. Additionally, properly optimized images contribute to SEO, helping the post rank better in search results.
Effective image placement ensures that visuals complement the content rather than distract from it, creating a seamless and engaging reading experience. For image placement, the following tips can be helpful:
Follow these placement tips:
- Use images to illustrate key points or add value to the content.
- Align images properly (left, right, or center) to maintain a clean, professional layout.
- Avoid overloading your blog with too many images, as this can distract readers and slow down your site.
Featured Images
A featured image is the primary image associated with a blog post or webpage, typically displayed at the top of the article, on the homepage, in search engine results, and when the post is shared on social media. Additionally, it plays a role in SEO and branding, making the post more recognizable across platforms.
Choose an eye-catching, relevant image that fits your blog’s aesthetic as well as matching the content of the blog post.
5. Adding the Image to A Blog Post
Ok, so keeping all of the above in mind, the instructions below will take you through the steps to load an image into a blog post (well, this one to be honest – haha).
The image is a screen shot that I have taken as a demonstration which I will add to this site below. I am using the WordPress with a block editor. You may need to do some research into adding images to your own blog post as you follow these instructions.
- Select whatever tool you have to add an image to a blog post.

2. Select You upload option (I use the media library myself) to open the page to upload and select your image.

3. Add your relevant alt text and description.

4. Click Select and to add the image to your blog post.
Conclusion
And there you have it – how to add images to a blog post. I hope it has been helpful and as usual, please do not hesitate to comment below if you have any questions, need some advice or have any experiences to share.
Do you want further assistance with any of the above or need help to build your own affiliate website?
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