SEO

8 min read

April 1, 2025

Image SEO: How to Optimize Images for Google Rankings

Google Image Search is 22.6% of all web searches. Most sites ignore it completely.

[Descriptive phrase] + [keyword] + [context] — under 125 characters.

Bad: alt="image"

Bad: alt="compress image online free best tool 2025" (keyword stuffing)

Good: alt="Woman compressing a JPEG photo on a laptop"

File Naming

compress-image-online-free.webp (good) vs IMG_4821.jpg (bad). Use hyphens, not underscores.

Converting your hero image from JPG to WebP typically reduces LCP by 0.3–0.8 seconds — often moving PageSpeed from "Needs Improvement" to "Good."

A Pakistani fashion e-commerce site implemented: alt text on 3,200 images, file renaming, WebP conversion, image sitemap, width/height attributes.

Results after 90 days:

Google Image Search traffic: +40%

LCP: 4.2s → 2.1s

Overall organic traffic: +18%

Written by the GMC Tools team

Compress images without losing quality

Convert images to modern WebP format

Resize images to exact dimensions

Typing a question into Google feels instant — but behind that single search box is one of the most complex systems ever built.

Search engines are smart, but they still need help understanding what a page is really about. That's what schema markup provides.

That blue title and grey description under every Google result aren't random — they're carefully written meta tags.