SEO Tools

Mastering Image Placement in Blog Posts Using SEMRush: A Guide for Bloggers

Posted by Mark Luz - Softlist.io Writer
Posted on April 4, 2025
Updated on April 10, 2025

Key Takeaways

Strategic Image Placement Enhances SEO & User Experience: Properly placed images improve readability, engagement, and search rankings. Using SEMRush, bloggers can analyze content structure and optimize image positioning for maximum impact.
Image Optimization is Essential for Speed & Accessibility: Compressing images, using next-gen formats like WebP, and implementing lazy loading prevent slow load times. Alt text and proper file naming improve accessibility and help search engines understand the content.
Choosing the Right Images Matters: High-quality, relevant visuals enhance blog credibility and engagement. Bloggers should prioritize legally sourced images from royalty-free platforms or original graphics to avoid copyright issues.
SEMRush Tools Help Improve Image SEO: Features like the Site Audit tool identify missing alt text, large file sizes, and other optimization opportunities, while Traffic Analytics tracks image-driven traffic for performance insights.
Avoid Common Mistakes that Hurt Image SEO: Oversized images, missing alt text, and excessive visuals can harm user experience and rankings. Regular audits and best practices ensure images contribute positively to blog performance.

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Role of Images in Blog SEO

Enhancing User Experience – High-quality and relevant images make blog posts visually appealing, breaking up large text blocks and keeping readers engaged. A well-structured post with images reduces bounce rates, signaling to search engines that the content is valuable.
Improving Readability & Content Flow – Images help illustrate key points, making complex information easier to digest. Infographics, charts, and screenshots add clarity and make content more interactive.
Boosting Search Visibility with Image SEO—Optimized images can rank in Google Image Search, driving additional traffic. Proper file names, alt text, captions, and structured data improve image discoverability.
Increasing Social Media Shares—Posts with compelling visuals are more likely to be shared on social platforms, expanding their reach and generating backlinks, contributing to SEO.
Reducing Load Time with Proper Optimization – Large images can slow down a website, negatively impacting rankings. Compressing images, using next-gen formats like WebP, and implementing lazy loading enhance page speed and SEO performance.
Supporting Accessibility & Inclusivity – Alt text helps visually impaired users understand images, improving accessibility and aligning with Google’s guidelines for a better user experience.

Finding the Right Images for Your Blog

Choosing the right visuals for your blog isn’t just about aesthetics, engagement, readability, and SEO. The right image can attract readers, reinforce your message, and improve your blog’s search rankings. But how do you find high-quality, relevant images that add real value?

Here’s what to keep in mind when selecting images for your blog:

Relevance is Key – Your images should complement your content, not distract from it. Choose visuals that enhance understanding and reinforce your message.
High-Quality Matters – Blurry or pixelated images reduce credibility. Opt for crisp, high-resolution visuals to maintain professionalism.
Stay Legal – Using copyrighted images without permission can lead to legal trouble. Stick to royalty-free sites like Unsplash or Pexels, or use tools like SEMRush to analyze competitor image sources.
Optimize for Speed – Large image files slow down page load time, which can hurt user experience and rankings. Compress images without sacrificing quality using tools like TinyPNG.

Once you’ve selected the right images, the next step is strategic placement to maximize engagement and SEO benefits.

How to Optimize Image Placement for Maximum ImpactStrategic image placement can make or break a blog post. Poorly positioned visuals can disrupt readability, while well-placed images enhance engagement, break up text, and guide readers through your content. Here’s how to optimize image placement for maximum impact.

Mastering Image Placement in Blog Posts Using SEMRush: A Guide for Bloggers Softlist.io

Source: Canva Pro1. Align Images with Your Content FlowImages should feel natural within your content, not like afterthoughts. Place visuals where they reinforce key points and improve comprehension. For example:

Use introductory photos at the beginning to set the tone.

Insert step-by-step visuals next to instructional content.

Place graphs and infographics near data-heavy sections for better readability.

SEMRush’s Content Analyzer can help ensure your content, including images, is structured for optimal engagement.2. Avoid Overloading Your Post with ImagesWhile visuals improve readability, too many images can distract or slow your page. A good rule of thumb:

One image per 300-400 words keeps your blog visually appealing without overwhelming the text.

Use featured images for attention-grabbing appeal and social sharing.

Reserve decorative images for sections where they add value, not just filler.

3. Use the Right Image FormatDifferent image formats serve different purposes. Choosing the right one improves loading speed and quality:

JPEG – Best for photos with rich colors and gradients.

PNG – Ideal for transparent backgrounds and sharp graphics.

WebP – A modern format that offers high quality with reduced file size.

SEMRush’s Site Audit tool can detect heavy image files that might slow down your site and suggest optimizations.4. Implement Responsive Image SizingYour images must look great on all devices, from desktops to mobile screens. Best practices include:

Using CSS media queries to adjust image sizes dynamically.

Ensuring mobile-friendly aspect ratios so images scale appropriately.

Testing with SEMRush’s Mobile SEO Checker to see if images display correctly across different screen sizes.

5. Leverage Captions and Contextual PlacementCaptions help reinforce the message of an image and improve SEO. When appropriate:

Add descriptive captions that summarize the image’s purpose.

Use contextual placement, positioning images near the text they relate to for a seamless reading experience.

Image SEO Best Practices with SEMRushNow that you know where to place images, it’s time to optimize them for search engines. SEMRush offers several tools to help you master image SEO and boost your blog’s visibility. Here are a few best practices:

Source: Canva Pro1. Choose High-Quality Images That Fit Your Blog’s ThemeYou want your images to match your theme, but they must also be optimized. Large, uncompressed photos can slow your website, which doesn’t help with SEO. SEMRush offers helpful tools to check your site’s speed and correctly optimize images.2. Resize Images to the Ideal DimensionsThe width of the column in your blog’s layout will determine how wide your images should be. You may need to resize them before uploading. If your theme’s content area is 800px wide, don’t upload a 4000px image—it’s unnecessary and slows things down.3. Naming Your Image Files CorrectlyInstead of uploading an image named “IMG1234.jpg,” rename it to something descriptive, like “blog-image-seo-tips.jpg.” This helps Google understand the content of your blog page.4. Adding Alt Text & Image DescriptionsAn alt tag (alternative text) describes your image for Google and users who rely on screen readers. Use keywords naturally—don’t drag and stuff them in unnaturally!5. Choosing the Right Placement for Your ImagesPlacing images in a new blog post matters. Do you want them to align left or right of your text block, or should they be full-width? On platforms like WordPress and Squarespace, you can use the image block to position it anywhere. SEMRush can also analyze your blogging layout to suggest improvements.6. Setting a Featured ImageA featured image is the leading photo displayed when you share your article on social media. Ensure it’s the right size for your theme and doesn’t get cropped awkwardly.7. Using Image Compression & Lazy LoadingHigh-quality images are great, but they can slow down your site. Tools like SEMRush can help you optimize images without losing quality. Lazy loading ensures that pictures in your blog load only when a reader scrolls down.8. Using Captions and Wrapping TextSome images work well with a text block beside them, while others need to stand alone. WordPress and Squarespace let you add a caption or wrap text around an image using an image block.9. Checking Mobile ResponsivenessYour blog page should look good on both browsers and mobile devices. Test how your images display on different devices—sometimes, you may need to tweak the width or use a spacer for better alignment.10. Deleting Unused Images & Keeping Things CleanIf you have images in your blog that aren’t needed, delete them. This keeps your website fast and clutter-free.Tracking Image Performance with SEMRushIf you’ve optimized your blog images for SEO, the next step is to track their performance. SEMRush provides tools to analyze your blog images, helping you understand their impact on your website’s rankings, speed, and user engagement.

Source: Canva Pro1. Use SEMRush’s Site Audit to Identify Image IssuesSEMRush’s Site Audit tool scans your blog page for familiar image SEO problems, such as:

Large file sizes are slowing down load times

Missing alt text, which affects accessibility and rankings

Broken image links, which hurt user experience and SEO

Incorrect file formats, such as using PNG when WebP would be better

If the audit flags any issues, you can edit or resize the images to improve performance.2. Track Image Rankings in Google SearchWant to see if the images in your blog are ranking on Google? SEMRush’s Position Tracking tool helps you monitor:

Which pictures appear in search results

What keywords do they rank for

How do their positions change over time

If an image is not ranking well, consider updating the alt tag, improving its description, or adjusting its position within the text block.3. Check Page Load Speed and Mobile PerformanceLarge blog images can slow down your site, affecting rankings and user experience. SEMRush’s Performance Report helps you:

Measure your blog page’s load time

Identify slow-loading images in your blog.

Find out if compression, lazy loading, or caching can improve speed.d

On mobile, images should fit the width of the column and adjust appropriately to different screen sizes. If they are too large, they may not look good.4. Analyze User Engagement with Heatmaps

SEMRush integrates with heatmap tools to track where users click on your blog images. If your featured image or header image is not getting attention, you can:

Reposition it, such as moving it to the top or aligning it left or right

Improve its design by adjusting the color contrast or using a more engaging theme.

Test different sizes, like full-width or square images.

5. Compare Image Traffic Over TimeWith SEMRush’s Traffic Analytics, you can compare image-related traffic before and after optimizing your blogging strategy. This helps you see if your new blog post images attract more visitors.

Identify which blog images drive the most traffic.c

Measure how changes to your header image or blog page impact engagement.

Track how different platforms, such as WordPress and Squarespace, affect image performance.

Common Mistakes to AvoidEven well-intentioned bloggers make mistakes when using images. Avoid these pitfalls to ensure your visuals enhance rather than hinder your blog’s performance:

Using oversized images – Sws down page load time and harms SEO.

Ignoring image alt text – Misses an opportunity to improve search rankings and accessibility.

Not optimizing file names – Default names like “IMG123.jpg” don’t help search engines understand the image’s relevance.

Uploading copyrighted images – Risking legal issues and potential takedowns.

Overloading posts with visuals – Too many images can distract readers rather than enhance the content.

Skipping responsive optimization – Failing to adjust images for mobile users leads to poor UX.

Not leveraging image sitemaps – Makes it more challenging for search engines to discover and index your images.

Neglecting to track performance – Without analytics, you won’t know if your images are helping or hurting your SEO.

By avoiding these mistakes and leveraging SEMRush’s tools, you can ensure your images boost your blog’s visibility, engagement, and search rankings.Wrapping UpMastering image placement in your blog posts isn’t just about making them look good—it’s about boosting engagement, improving readability, and driving more traffic.With SEMRush, you have the tools to strategically position images for maximum impact strategically, helping your content rank higher and keep readers interested.By applying the strategies we’ve covered, you can take your blog to the next level and create a better experience for your audience.Want to save on powerful SEO tools? Get deals and promotions by subscribing to our website and staying updated on the latest discounts. Also, don’t miss our in-depth review of the Top 10 SEO Tools Software to find the best tools for optimizing your blog’s performance. Check it out now.Frequently Asked Questions

Should I Use Stock Images Or Original Graphics?

Original graphics are preferred as they provide unique value and improve branding. However, high-quality stock images can be optimized with relevant alt text.

How Do I Check If My Images Are Optimized For SEO?

SEMRush’s Site Audit tool helps identify issues like missing alt text, large image sizes, and improper formats. It provides actionable insights to enhance image SEO.

How Many Images Should I Include In A Blog Post?

The number of images depends on the content length and topic. Typically, one image per 300-500 words is recommended to maintain engagement without slowing page load speed.

Can I Use Infographics To Improve Blog Engagement?

Yes, infographics are highly engaging and shareable. SEMRush can help optimize them with proper keywords, alt text, and schema markup to boost their visibility.

Does Image Placement Affect SEO?

When ranking content, search engines consider image relevance, alt text, and structured data. Proper placement ensures images support your content, improve dwell time, and enhance accessibility.