Image SEO Best Practices (90% Smaller File Sizes + Free GPT for Alt Text)
🔥Faster load times and better image SEO, plus my free GPT for alt text
👉https://www.skool.com/theconversioncl...
In this video, I show you how I optimise images in WordPress so you can cut file size (often 3 to 10x), improve page speed, and tidy up alt text for search engine clarity and accessibility.
I cover WebP vs. JPEG vs. PNG, basic compression, and how to replace image files safely in your media library.
I also cover alt text that helps both accessibility and search engines, plus common image optimisation mistakes that slow down a browser or confuse Google Image.
I’ll also touch on when a content delivery network helps content delivery for image files across devices.
📣Free GPT for alt text (template mentioned in the video): https://chatgpt.com/g/g-nsEgJ2jgW-jrr...
⏩ Skip to Section
0:00 Image SEO best practices overview (filenames + alt text + speed)
0:37 Find the problem image in WordPress Media Library
0:48 Fix large file size first (before writing alt text)
0:53 Install Enable Media Replace to swap images safely
1:37 Locate the image from your SEO tool and download it
2:03 Compress and convert to WebP with TinyPNG (big file size drop)
2:29 Use the free GPT to generate alt text based on the page keyword
3:26 Replace the original image file in the Media Library (no broken links)
4:06 Paste, tidy, and update the alt text
📺More videos from The Conversion Clinic
3 Real Reasons Your Content Isn’t Ranking (And How to Fix It Today): • 3 Real Reasons Your Content Isn’t Ranking ...
How to Track Button Clicks on a Website (2-Minute Setup With Site Behavior): • How to Track Button Clicks on a Website (2...
📚 Related resources
5 Reasons Why You Should Optimise for Visual Search in 2025: https://josiahroche.co/blog/why-you-s...
Why You Need an SEO Audit — 4 Quick Wins That’ll Save You Thousands in Lost Sales: https://josiahroche.co/blog/why-you-n...
How to Use Chatgpt for Keyword Research in 3 Steps (with Actual Prompts): https://josiahroche.co/blog/how-to-us...
❓FAQs
Q1. What is image SEO?
It’s how I optimise images so they load fast, support search results, and can appear in image search.
Q2. What should I fix first, file size or alt text?
File size first, because slow images hurt load times and Core Web Vitals.
Q3. What’s the best image format for websites?
Usually WebP, then JPEG for photos, and PNG only when you need transparency.
Q4. How do I reduce file size without losing image quality?
Resize to the display size, then compress until it still looks sharp.
Q5. Does alt text help SEO?
Yes, it helps search engines understand the image and helps a screen reader.
Q6. What makes good alt text?
Plain, specific, and not stuffed. One sentence is enough.
Q7. Can images rank in Google Image?
Yes, with the right filename, alt text, and relevant page content.
Q8. Should I rename image files?
Yes, use clear words instead of random camera names.
Q9. Should I lazy load images?
Yes for below-the-fold images, but not for the main hero image.
Q10. When do I need a content delivery network?
When you’ve got lots of image files or visitors from different regions.
📞 Need help getting your marketing off the ground? Book a call: https://josiahroche.co/book-meeting/
👍 Subscribe to The Conversion Clinic: / @theconversionclinic
🌐 Connect with me
☑ Website -- https://josiahroche.co/
☑ LinkedIn -- / josiahroche
☑ Instagram -- / josiahroche.co
☑ Podcast -- https://open.spotify.com/show/2S4f67H...
☑ TikTok -- / jrrmarketing
#imageseo #pagespeed #alttext #imageoptimization