Choosing the right images for your website

by | Jun,2024

The Ultimate Guide to Using the Right Images for Your Website

Using the correct images is a crucial component in capturing attention and conveying your brand message. However, using images effectively involves more than just choosing visually appealing pictures. It’s about understanding image size, file formats, SEO, legal considerations, and performance impacts. This comprehensive guide will walk you through best practices for using images on your website, helping you optimize for both aesthetics and functionality.

Why Image Optimization Matters

Before diving into the specifics, let’s discuss why image optimization is essential:

  • Improved Website Performance: Large, unoptimized images can slow down your website, leading to a poor user experience and higher bounce rates.
  • Enhanced SEO: Properly optimized images can boost your search engine rankings, making it easier for potential customers to find you.
  • Legal Compliance: Using images without proper permissions can lead to legal issues. Understanding the rules of image ownership and licensing is crucial.
  • Professional Appearance: High-quality, well-optimized images make your website look professional and trustworthy.

1. Choosing the Right Image Size

One of the most common mistakes website owners make is using images that are too large. Large photos can drastically slow down your website. Here’s how to choose the right size:

Best Practices:

  • Determine the Maximum Display Size: Determine the maximum size an image will display on your site and resize it accordingly.
  • Use Responsive Images: Implement responsive images to ensure they look good on all devices. Use the srcset attribute in HTML to provide different image sizes for different screen resolutions.


If your website’s main content area is 800px wide, there’s no need to upload images wider than that.

2. Selecting the Right File Formats

Different image formats serve different purposes. Here’s a quick rundown of the most common formats:


  • Best For: Photographs and images with many colors.
  • Pros: Good quality with relatively small file sizes.
  • Cons: Lossy compression can reduce quality if over-compressed.


  • Best For: Images with transparency, such as logos.
  • Pros: Lossless compression retains quality.
  • Cons: Larger file sizes compared to JPEG.


  • Best For: Web images requiring both high-quality and small file sizes.
  • Pros: Superior compression and quality.
  • Cons: Not supported by all browsers.


  • Best For: Simple graphics and animations.
  • Pros: Supports animation and transparency.
  • Cons: Limited to 256 colors, resulting in lower quality for photographs.

3. SEO Considerations for Images

Optimizing images for SEO involves several factors, including file names, alt text, and captions. Here’s how to do it right:

File Names:

  • Use descriptive, keyword-rich file names.
  • Avoid generic names like image1.jpg.

Alt Text:

  • Provide alternative text descriptions for all images.
  • Ensure alt text is descriptive and includes relevant keywords.


  • Use captions to provide context for images.
  • Captions are often read more than the main body text, so make them informative.


Instead of naming an image IMG1234.jpg, use blue-widget-product.jpg if the image is of a blue widget.

4. Legal Considerations

Using images without proper rights can lead to legal troubles. Here are some guidelines to ensure you’re using images legally:

Sources for Legal Images:

  • Stock Photos: Websites like Shutterstock and Adobe Stock offer licensed images.
  • Creative Commons: Use images from platforms like Unsplash or Pixabay, but always check the licensing terms.
  • Own Images: Whenever possible, use your own images or hire a photographer.


Always check the licensing agreement even when using images from free stock photo sites. Attribution may be required for some images.

5. Enhancing Website Performance

Optimizing images can significantly enhance your website’s performance. Here are some tips:


  • Use tools like TinyPNG or ImageOptim to compress images without losing quality.

Lazy Loading:

  • Implement lazy loading to defer the loading of images until they are needed. This reduces initial load time.

Content Delivery Networks (CDNs):

  • Use a CDN to serve images from a location closer to your user, speeding up load times.

Real-World Example

Let’s consider a real-world example. A blogger noticed their website was slow and upon investigation, found that their images were not optimized. By resizing images, switching to WebP format, and implementing lazy loading, they reduced their page load time from 5 seconds to 2 seconds, leading to improved user engagement and higher search rankings.


Using the right images for your website involves more than just picking pretty pictures. It requires careful consideration of image size, file formats, SEO, legalities, and performance. By following the best practices outlined in this guide, you can enhance your website’s performance, improve your search engine rankings, and provide a better user experience.

Call to Action

If you need further help with optimizing images for your website, feel free to book a call with me for personalized advice. If you found this guide helpful, please share it with your network!

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