Settings – Resizing

Overview

Image Optimizer provides an automatic image resizing feature for images uploaded to your site. This guide explains how to use the configuration interface shown in the plugin settings.

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Available Options

Automatic Resizing

  • Description: Enables or disables automatic resizing of uploaded images.
  • Behavior:
    • When enabled (green toggle), all new images uploaded to the site are automatically resized according to the maximum dimensions set.
    • When disabled, images are saved without resizing.

Max. width (px)

  • Field: numeric value (in pixels).
  • Function: sets the maximum allowed width for images.
  • Example: setting 1000 ensures that any image wider than 1000 px will be proportionally resized.

Max. height (px)

  • Field: numeric value (in pixels).
  • Function: sets the maximum allowed height for images.
  • Example: setting 1000 ensures that any image taller than 1000 px will be proportionally resized.

Disable Big Image Threshold

  • Description: since WordPress 5.3, large uploaded images are automatically resized to a maximum of 2560 px in width or height.
  • Behavior:
    • When disabled (grey toggle), the WordPress default limit remains active.
    • When enabled, this limit is disabled, and images can exceed 2560 px (depending on the Max. width/height values above).

Save Settings

  • Function: saves all changes.
  • Note: settings apply only to newly uploaded images after saving; existing images in the library are not modified retroactively.

Usage Flow

  1. Log in to your WordPress admin panel.
  2. Navigate to Image Optimizer → Optimize → Resizing.
  3. Enable/disable Automatic Resizing as needed.
  4. Enter your desired values for Max. width and Max. height.
  5. If you don’t want WordPress to automatically resize very large images, enable Disable Big Image Threshold.
  6. Click Save Settings to apply the changes.

Best Practices

  • Set values that match your site layout (e.g., 1400 px for full-width images).
  • Only enable Disable Big Image Threshold if you need to handle very high-resolution images (e.g., professional photography).
  • Remember that larger images affect page weight and site performance.