What’s the optimal image size for WordPress posts and pages?

Optimal image sizes depend on your theme and layout, but here are general guidelines:

• Featured images: 1200×628 pixels
• Blog post images: 800-1200 pixels wide
• Thumbnails: 150×150 pixels

To manage image sizes effectively, use Regenerate Thumbnails plugin to update existing images when changing dimensions. You can also define custom image sizes in your theme’s functions.php file:

Best practices:

• Maintain aspect ratios
• Consider responsive design requirements
• Don’t upload images larger than needed

Monitor your theme’s image sizes in WordPress Settings → Media and adjust accordingly.