You should know that choosing eye-catching images is key to creating an engaging blog post or web page.
But did you also know that optimizing your images for search engines is just as important?
The images on your site are a vital part of your content and SEO strategy. If you want your images to rank well in Google image search and help boost your overall search rankings, you need to implement some best practices.
In this article, I will walk you through the essential image optimization techniques that will get your site found. By following these simple tips, you'll be well on your way to image SEO success and higher traffic from search.
The Importance of Images for SEO
Images are crucial for search engine optimization (SEO) and ranking well in Google search results.
1. Including relevant images enhances user experience, and makes your content more visually appealing and engaging.
2. Optimized images increase the likelihood of appearing in visual search results, driving additional traffic to your website.
3. Images offer additional ranking opportunities, especially in image search. This would expand your visibility in search engine results pages (SERPs).
4. Alt (alternative) attributes improve accessibility for visually impaired users and help search engines understand image content, potentially boosting ranking.
5. Engaging images contribute to reduced bounce rates by keeping users on webpages longer, signaling relevance to search engines.
How to Make your Site Images SEO Optimized
These are not steps, they are things you should know and try to make sure they are all well implemented on your site.
Use Descriptive File Names
Give your image a name that accurately describes what it is. Use hyphens or underscores instead of spaces, and avoid generic terms like "image1"," img-00023". Good examples are "woman-laughing.jpg" or "new-york-city-skyline.png".
Adopt Using Morden Standard File Format
Adopting modern standard file formats for images, such as WebP or AVIF, aids SEO by reducing image file sizes, improving page load speed, and enhancing user experience, all of which are factors considered by search engines for ranking websites.
Following the Webp or AVIF, the two next search engine-friendly image formats are JPEG and PNG.
JPEG is best for photographs, while PNG is better for graphics like logos.
Webp is the most recommended. It uses a complex lossless compress technology. This makes Webp images small in size and quality is not affected unlike other formats.
Avoid using GIFs, BMPs or TIFFs where possible.
To know which format your image is in, check the file extension.
Examples
.webp, .png, .jpeg, .jpg, .gif
Add Alt Text
Alt text also called in full 'Alternate text' appears when an image can't be displayed. It's also used by screen readers for the visually impaired. Keep alt text short but descriptive, e.g. "Woman laughing with friends" or "Skyline of New York City at dusk".
Example:
<img src="https://via.placeholder.com/300" alt="Placeholder Image">
In this example:
src="https://via.placeholder.com/300": Specifies the image source.
alt="Placeholder Image": Specifies the alt text for the image. In this case, it's "Placeholder Image", which is a short description of what the image represents.
Alt text is important for accessibility, as it provides text alternatives for users who cannot view the image.
Use Title and Caption
A title and caption provide context for your image. The title should be a few words, e.g. "Joyful Friends" or "The City That Never Sleeps". The caption can be 1-2 sentences describing the image in more detail.
Example:
<figure> <img src="https://via.placeholder.com/300" alt="Placeholder Image" title="Title of the Image"> <figcaption>Caption for the Image</figcaption> </figure>
In this example:
title="Title of the Image" provides a title for the image, which typically appears as a tooltip when the user hovers over the image.
<figcaption> contains the caption for the image. This is where you can provide additional context or description for the image content.
Compress Your Images
Compress images to reduce their file size without reducing quality. Smaller image sizes mean faster page load times and a better user experience. Use a tool like TinyPNG or Kraken.io to compress JPEGs and PNGs.
These are the top Image Compressor Online and Image Compressor programs you can download.
Set Image Dimensions
Image dimensions refer to the width and height of an image, typically measured in pixels (px).
Providing the appropriate dimensions for your images not only help in SEO, but also improve page load speed, responsive design, accessibility and user experience.
You should know how It Helps
Example:
<img src="example.jpg" alt="Example Image" width="800" height="600">
In This Example:
width="800" and height="600": Specify the dimensions of the image in pixels.
Make Sure your Images are Responsive
Image responsiveness refers to the ability of an image to adapt and display correctly across various screen sizes and devices.
Making your images responsive enhances SEO by improving user experience, which reduces bounce rates and increases user engagement. This signals to search engines the relevance and quality of the content, and this ultimately contribute to better rankings.
Read all About Making Responsive Images
Add Schema Markup
Image schema markup, like the ImageObject type, provides additional information to help search engines understand your images. It can improve ranking and display in image search results. You'll need to add HTML with schema.org syntax to your page.
Example:
<figure itemscope itemtype="https://schema.org/ImageObject">
<img src="https://via.placeholder.com/300" alt="Placeholder Image" itemprop="contentUrl">
<figcaption itemprop="caption">Caption for the Image</figcaption>
<meta itemprop="description" content="Description of the image">
</figure>
In this Example:
<figure> is used to group the image and its associated content.
itemscope attribute indicates that the HTML element contains structured data.
itemtype="https://schema.org/ImageObject" specifies the type of structured data, which is an ImageObject according to schema.org.
<img> tag represents the image and uses itemprop="contentUrl" to specify the image URL.
<figcaption> contains the caption for the image, with itemprop="caption" indicating that it's the caption for the ImageObject.
<meta itemprop="description" content="Description of the image"> provides a description of the image, which can help search engines understand the image content better.
This structured data markup can improve the visibility and understanding of your images by search engines, potentially leading to better ranking and display in image search results.
Please note the implementation of Schema markup must be done right and correct or else your images would be giving errors to search engines. You would see this error in Search Console as well.
More on Optimize Image File Names and Alt Text
Using descriptive names and alt text helps search engines understand your images and rank them appropriately. It also makes your content more accessible to visually impaired users.
Relevant File Names
Choose file names that accurately describe your image content and include important keywords. For example, use “happy-family-picnic.jpg” rather than “IMG123.jpg”. Keep file names concise but descriptive.
Alt Text
Alt text appears when an image cannot be displayed. It should reiterate the image content and include keywords. For example, use “A happy family enjoying a picnic in the park” rather than “Family photo”.
Keep alt text within 125 characters. Don't repeat the file name, but do include keywords and a brief image description. For example:
Happy family enjoying picnic in the park on a sunny day
Woman gardening in her vegetable garden with tomatoes and cucumbers
Architectural drawing of modern home design with large windows
Placement
Put keywords in your file names and alt text toward the beginning for the greatest impact. The first 2-3 words of your file name and the first 4-5 words of your alt text carry the most weight.
Optimizing your images for search and accessibility may seem tedious but is worth the effort. Descriptive file names and alt text, along with strategic keyword placement, helps search engines find and rank your images. It also makes your content more accessible and inclusive. Take the time to do it right!
More Focus on Image Size and Format
The size and format of your images directly impact their optimization for search engines. Keep these best practices in mind when choosing and editing images for your website:
Image Dimensions
For the best results, use images that are at least 1000 pixels wide. This provides enough detail for search engines to analyze the image content.
However, don't make images so large that they slow down page loading. A good rule of thumb is to keep images under 2MB in size. If your images are photographs, consider compressing them to reduce file size before uploading.
File Format
Webp is the the most recommended for it lightweight size and optimal quality. JPEG and PNG are also still SEO friendly if their file size won't get in the way.
JPEG is best for photographs, while PNG is better for graphics like logos.
Avoid using GIFs, BMPs or TIFFs where possible.
Take note of your Image Wrapping
Place your images within the flow of text on the page, rather than floating them on either side of the content. Images placed inline with text allow search engines to better associate the image with the surrounding content.
By following these key practices, you'll have perfectly optimized images that improve your search rankings and provide a great experience for your visitors.
More on Improving Page Load Speed With Image Compression
Image optimization is key for speeding up your page load times and providing a good user experience. One of the easiest ways to optimize your images is through compression.
Image Compression
Compressing your images reduces their file size without significantly impacting quality. This makes them load faster and takes up less bandwidth. There are a few ways to compress your images:
Use a tool like TinyPNG, Kraken.io or Compressor.io to compress PNG, JPG, GIF and SVG files. These are free, easy-to-use web and API services. Just upload your images and download the optimized versions.
Enable compression in your content management system or website builder. Many CMSs like WordPress, Squarespace and Wix have built-in options to automatically compress images on upload. Activate this feature to effortlessly optimize all new images.
Compress images before uploading. If you have design software like Photoshop, Pixellab, compress images by selecting “save for web” and choosing a lower quality setting. You want to aim for 60-80% quality for most images. This can achieve 30-50% size reduction with minimal quality loss.
Batch compress existing images. Use a desktop tool like ImageOptim, RIOT or Caesium to compress hundreds of images at once. This is perfect if you already have a library of images on your site that need optimizing.
Don’t compress the same image multiple times. This can cause quality degradation without significant additional size reduction. Only re-compress images if you make edits to them.
Optimizing your images for size and speed is a quick win to improve your site's SEO and user experience. Compression is a simple but effective tactic you can implement right away to accelerate your page load times. Faster sites mean happier visitors and higher rankings, so get optimizing!
Include Images in Sitemaps for Indexing
Including images in your sitemap helps search engines index the images on your site. This allows them to understand the content and context of each image, which can improve their ranking in image search results.
To add images to your sitemap:
Link images to product or Post pages
Make sure each image links directly to the product page it appears on. Search engines follow these links to understand what the image is about and index that content along with the image.
Optimize image file names
Use descriptive file names that include the product name and any relevant keywords. Something like “blue-widget-deluxe.jpg” is better than “img123.jpg”. This helps search engines determine what the image contains.
Include image metadata
Embed metadata like title, caption, and alt text directly in the image file. The alt attribute provides a textual description of the image. The title and caption provide more details. This metadata is read by search engines and used to understand and rank the image.
Submit a sitemap to search engines
Once you’ve ensured all images are properly linked, named, and tagged, submit an XML sitemap to search engines like Google and Bing. The sitemap should include both web pages and images. Most content management systems and ecommerce platforms can automatically generate a sitemap for you.
Consider using image schema markup
For the best results, implement image schema markup like JSON-LD for your product images. Schema markup provides additional details to search engines like the image subject, date published, author, license, and more. This can significantly improve image ranking and visibility.
Following these best practices for optimizing and indexing your product images will help boost your image search traffic and rankings over time. Be patient and consistent, and your image optimization efforts will pay off.
Conclusion
So there you have it, the key things you need to know to properly optimize your images for SEO and drive more traffic to your site.
It may seem like a lot of extra work, but the investment in time will pay off in the long run with higher rankings and more visibility.
By taking the time to choose engaging, high-quality images, create alt text that matches your keywords, use descriptive file names, compress your images, and add captions, you'll give your images the best chance to rank well in Google Image Search and beyond.
Optimizing your images is one of the most impactful things you can do for your SEO and overall content strategy. So get out there, take some amazing photos, curate the best images for your content, and implement these best practices.
Your future visitors and rankings will thank you! Keep testing and optimizing to find the right balance for your unique content and audience.
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