guide · image compression for SEO
Image compression helps SEO when it improves real page experience: lighter pages, faster loading, useful images and no hidden tricks.
SEO checklist
Smaller images can improve loading experience and reduce wasted bandwidth. That helps users and can support better technical performance signals.
Compression should not make the page less useful. If an image explains the content, keep enough detail for users to understand it.
Uploading a large original and shrinking it only with CSS still makes the browser download unnecessary bytes. Export a practical pixel size for the layout first.
For thumbnails, profile images and cards, smaller dimensions often matter more than small quality changes.
Use a relevant file name, visible page context and helpful alt text when the image has meaning. Decorative images can use empty alt text.
Do not hide text in images to manipulate keywords. Important content should be readable in HTML.
Compression is not a magic ranking switch. It helps when it improves real loading experience and keeps the page useful.
No. Important headings, instructions and navigation should be available as HTML text.
Updated September 4, 2026 · Source checked: 2026-09-04
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