How to Optimise Images for a News Website: A Complete SEO Guide

Images are an essential part of modern news publishing. A strong photograph can attract attention, explain a story, increase engagement and make a news article more appealing to readers. However, large, poorly named or incorrectly formatted images can also slow down a website and create a poor user experience.

For news websites publishing several articles every day, image optimisation is especially important. A single article may contain a featured image, several story photographs, screenshots, graphics and related images. If these files are not properly optimised, they can quickly increase page size and affect website performance.

Learning how to optimise images for a news website can help publishers create faster pages, improve accessibility, strengthen image search visibility and provide a better experience for readers on both desktop and mobile devices.

Why Image Optimisation Matters for News Websites

News websites depend heavily on visual content. Readers often notice the featured image before they start reading the headline or article.

However, high-resolution photographs from cameras and smartphones can be several megabytes in size. Uploading these files directly to a website can unnecessarily increase the amount of data visitors have to download.

Image optimisation helps reduce this problem by preparing images for the web without unnecessarily sacrificing visual quality.

The main benefits include:

• Faster page loading
• Better mobile experience
• Reduced bandwidth usage
• Improved website performance
• Better accessibility
• Improved Google Images visibility
• More efficient use of hosting resources
• Better user engagement

Google also recommends optimising images for speed and quality because images can contribute significantly to page size.

For news publishers, this is particularly important because visitors may be accessing stories using mobile networks with limited bandwidth.

1. Choose the Right Image Format

One of the first steps in image optimisation is choosing an appropriate file format.

Common formats include JPEG, PNG, WebP and AVIF.

JPEG

JPEG remains useful for photographs, particularly when compatibility and relatively small file sizes are important.

It is suitable for:

• News photographs
• Event photographs
• Political rallies
• Sports images
• Interviews
• Landscape photographs

PNG

PNG is useful when an image needs transparency or requires lossless quality.

It can be suitable for:

• Logos
• Screenshots
• Graphics
• Icons
• Images containing sharp text

However, PNG can produce much larger files than modern formats when used for ordinary photographs.

WebP

WebP is a modern image format that can provide good image quality at smaller file sizes.

For many WordPress news websites, WebP can be an excellent choice for photographs and other web images.

AVIF

AVIF can provide highly efficient image compression and is increasingly supported by modern browsers and web technologies.

For publishers with an advanced optimisation workflow, AVIF can be considered alongside WebP.

The important point is not simply to choose the newest format. Test your images, maintain good quality and ensure your website provides appropriate fallbacks where necessary.

2. Compress Images Before Uploading

One of the biggest mistakes news publishers make is uploading original camera or smartphone photographs directly to WordPress.

A photograph may look excellent at 5 MB, but the website may only need a fraction of that file size.

Image compression reduces unnecessary data while attempting to maintain acceptable visual quality.

Before uploading an image, consider:

1. Resize it to the dimensions actually required.
2. Remove unnecessary image data where appropriate.
3. Compress the image.
4. Convert it to an efficient web format.
5. Check the final quality before publishing.

Avoid compressing an image so aggressively that faces become blurry, text becomes unreadable or important details disappear.

For news organisations, image quality still matters. A photograph of an important public event should remain clear enough for readers to understand what they are seeing.

3. Resize Images to the Required Dimensions

Uploading a 6,000-pixel-wide photograph when your article content displays it at approximately 1,200 pixels wide wastes resources.

The browser may have to download a much larger image than necessary.

Instead, determine the maximum display size required by your website.

For example, if your article content is approximately 1,200 pixels wide, there may be little benefit in serving a 6,000-pixel-wide image to ordinary visitors.

News websites should also consider different image sizes for:

• Homepage featured images
• Article pages
• Category pages
• Search results
• Related posts
• Mobile devices
• Social media previews

Responsive image techniques allow browsers to select an appropriate image size for the visitor’s device. Google recommends responsive approaches such as srcset and sizes for serving suitable image versions.

4. Use Descriptive Image File Names

Do not upload every photograph with a filename such as:

IMG_4532.jpg

or:

DSC_00987.jpg

Instead, use a short and descriptive filename that identifies the subject.

For example:

kano-government-budget-meeting.jpg

is more useful than:

IMG_4532.jpg

A good filename should:

• Describe the image
• Be reasonably short
• Use relevant words
• Use hyphens between words
• Avoid unnecessary numbers
• Avoid keyword stuffing

Descriptive filenames provide additional context about an image and can help search engines understand what the image represents.

However, do not turn filenames into long keyword lists. Keep them natural and relevant to the actual photograph.

5. Write Useful Alt Text

Alt text is one of the most important elements of image SEO and accessibility.

It provides a textual description of an image for users who cannot see it and also gives search engines additional context.

For example, instead of:

alt="image"

use something descriptive such as:

alt="Kano State officials during a budget presentation"

The alt text should describe what is actually important about the image in the context of the article.

Avoid keyword stuffing.

For example, this is poor practice:

alt="Kano news Kano Nigeria news Kano politics latest Kano government news"

Instead, write naturally:

alt="Kano State officials during a government meeting"

Google specifically recommends useful, information-rich alt text and warns against filling alt attributes with keywords.

For decorative images that provide no meaningful information, an empty alt attribute may be more appropriate.

6. Add Captions to News Photographs

Captions are particularly valuable for news websites.

A good caption can tell readers:

• Who is shown
• What is happening
• Where the photograph was taken
• When appropriate, when it happened
• Who took the photograph

For example:

Poor caption:

“Officials at the event.”

Better caption:

“Officials during the opening of a new healthcare facility in Kano on Tuesday.”

Captions can improve the reader’s understanding of the story and provide additional context around the image.

For news organisations, always follow the publication’s editorial and photo-credit policies.

7. Preserve Photo Credits and Copyright Information

News publishers must pay particular attention to image ownership.

Do not simply download photographs from social media or another website and publish them without permission.

Where appropriate, maintain:

• Photographer name
• Agency credit
• Copyright information
• Licensing information
• Source information

Google provides guidance on image metadata, including creator, credit and copyright information.

This is especially important for professional newsrooms that publish photographs supplied by staff photographers, agencies, government institutions or third-party contributors.

8. Make Images Responsive

A news website needs to work well on phones, tablets and desktop computers.

A large desktop image should not automatically be delivered to every mobile visitor.

Responsive images allow the browser to select an appropriate version based on the available display size and device.

This is particularly important for Nigerian news websites because many readers access news primarily through smartphones.

A properly responsive image can help reduce unnecessary downloads while maintaining good visual quality.

9. Optimise the Featured Image

The featured image deserves special attention because it can appear in several locations.

It may be displayed on:

• The homepage
• Category pages
• The article page
• Search results
• Related articles
• Social media
• Google Discover
• Google Images

Therefore, create a high-quality featured image with an appropriate aspect ratio and sufficient resolution.

Google’s Article structured-data guidance recommends representative article images and notes that providing multiple high-resolution versions in common aspect ratios can be useful.

For publishers, it is also important to ensure that the featured image actually represents the article rather than being a generic image unrelated to the story.

10. Do Not Make Images Too Small

Image optimisation does not mean making every image as small as possible.

An image that is heavily compressed or too small can look blurry and unprofessional.

This is especially problematic for:

• Breaking news
• Political stories
• Court reports
• Sports coverage
• Investigative journalism
• Photo stories
• Interviews

The goal should be the smallest practical file size that still provides good visual quality.

Think of image optimisation as a balance between:

Quality + Dimensions + File Size + User Experience

11. Use Lazy Loading Carefully

Lazy loading can prevent images that are far below the visible part of a page from loading immediately.

This can reduce unnecessary initial downloads, particularly on long news articles containing many photographs.

However, publishers should be careful with important images that appear immediately when the page loads.

For example, the main article image may be important to the initial page experience and should not necessarily be treated the same way as an image several screens further down the article.

Modern web performance guidance includes lazy-loading as one of the techniques for reducing unnecessary image-related work.

12. Optimise Images for WordPress

WordPress makes image management easier, but publishers still need a proper workflow.

A practical WordPress news publishing process could look like this:

Step 1: Select the appropriate photograph.

Step 2: Crop it to the required composition.

Step 3: Resize it.

Step 4: Compress it.

Step 5: Convert it to an appropriate modern format where practical.

Step 6: Rename the file descriptively.

Step 7: Upload it to WordPress.

Step 8: Add descriptive alt text.

Step 9: Add a relevant caption and photo credit.

Step 10: Check the article on mobile and desktop.

Step 11: Test the page performance.

This workflow can become part of the newsroom’s standard publishing procedure.

13. Check Your Website Speed

After optimising your images, test the actual website.

Tools such as Google PageSpeed Insights can help identify performance issues.

Pay particular attention to:

• Large image downloads
• Proper image sizing
• Image format
• Largest Contentful Paint
• Cumulative Layout Shift
• Overall page performance

Images are not the only factor affecting website speed. Hosting, caching, JavaScript, CSS, advertising systems, third-party scripts and server response time can also affect performance.

Therefore, do not assume that compressing images alone will solve every speed problem.

Google’s current guidance stresses overall page experience rather than relying on one isolated optimisation.

14. Help Google Discover Your Images

Search engines need to be able to discover and access your images.

Google recommends using standard HTML image elements and notes that Google does not index images referenced only through CSS background images in the same way. Google also supports image sitemaps for helping it discover images that might otherwise be difficult to find.

For larger news websites, this becomes increasingly important because thousands of photographs may be published over time.

Make sure important images are:

• Accessible to search engines
• Not unnecessarily blocked by robots.txt
• Included on crawlable pages
• Served from stable URLs
• Associated with relevant article content

15. Optimise Images for Google Images and Discover

Image optimisation is not only about making pages faster.

A well-optimised image can also help your content become more discoverable through visual search experiences.

Google uses information from the image, the page surrounding it, filenames, alt text and other signals to understand image content.

For news publishers, this means your image should make sense together with:

• The headline
• Article text
• Caption
• Filename
• Alt text
• Page topic

Avoid trying to manipulate image search by adding unrelated keywords.

Instead, make every element accurately describe the story.

Common Image SEO Mistakes News Websites Should Avoid

Here are some of the most common problems:

• Uploading original 5–10 MB photographs
• Using generic filenames such as IMG_0012.jpg
• Leaving alt text empty on important news photographs
• Keyword stuffing alt text
• Using unnecessarily large dimensions
• Publishing blurry or heavily compressed images
• Ignoring mobile users
• Using images without proper permission
• Removing important copyright information
• Using irrelevant stock photographs
• Loading dozens of large images immediately
• Forgetting image captions and credits
• Blocking important image resources from search engines

Avoiding these mistakes can make image management much more effective.

News Website Image Optimisation Checklist

Before publishing a news article, ask:

☐ Is the image relevant to the story?

☐ Is the image properly resized?

☐ Has unnecessary file size been removed?

☐ Is the file format appropriate?

☐ Does the filename describe the image?

☐ Does the image have useful alt text?

☐ Is the caption accurate?

☐ Is the photographer or source properly credited?

☐ Does the image work well on mobile?

☐ Is the image accessible to search engines?

☐ Does the article load quickly?

☐ Have you checked the page after publishing?

Final Thoughts

For a modern news website, image optimisation should be part of the publishing process rather than something done only after a website becomes slow.

The best approach is to optimise images before they reach the website, use descriptive filenames and alt text, select suitable formats, serve responsive versions, maintain proper photo credits and regularly monitor page performance.

Most importantly, remember that image SEO is not about tricking Google. It is about helping search engines understand your images while giving readers a fast, accessible and high-quality experience.

For news publishers competing for visibility in Google Search, Google Images and other discovery surfaces, properly optimised images can become an important part of a broader SEO strategy.

A fast website with relevant, accessible and properly presented images is better for readers—and that should always be the primary goal of a successful news publishing website.