Resize Images on Upload

Automatically resize uploaded images to sensible maximum dimensions. Prevent 6000×4000px smartphone photos from consuming storage and slowing down your site — resize them to web-appropriate sizes on upload.

Use Cases#

• Automatically resize high-resolution phone photos to web-appropriate 1920px dimensions
• Prevent clients from uploading massive files that waste hosting storage
• Optimize mobile photos while maintaining quality and aspect ratio

How It Works#

1. Someone uploads an image larger than your maximum dimensions
2. The module resizes it to fit within those limits
3. The aspect ratio is preserved — no cropping or distortion
4. The oversized original is replaced with the resized version

If an image is already smaller than the limits, it uploads unchanged.

Settings#

Where to Find It#

Configure in Switchboard → Media → Resize Images on Upload. Once enabled, resizing happens automatically during any upload.

How Aspect Ratio Works#

Images are resized to fit within both max width and max height while maintaining their original proportions:

The module always uses the smaller calculated dimension to ensure the image fits within both limits.

Recommended Dimensions#

Skip Resizing for Specific Images#

Sometimes you need the full resolution. Add the exclusion suffix to any filename:

hero-banner-full.jpg    → Keeps original size
product-photo.jpg       → Resized to max dimensions
portfolio-full.png      → Keeps original size

The default suffix is -full but you can customize it.

Supported Formats#

The module resizes:

• JPEG — Resized as JPEG (90% quality)
• PNG — Stays PNG if transparent, converts to JPEG if not
• BMP — Converted to JPEG

GIFs and WebP are passed through unchanged.

Existing Images#

This module only affects new uploads. Images already in your media library keep their current sizes.

Works With WebP Conversion#

This module runs before WebP Conversion. The workflow:

1. Large image uploaded (6000×4000)
2. Resize module shrinks to 1920×1280
3. WebP module converts to WebP format
4. Result: Optimized WebP at sensible dimensions

Benefits#

Save Storage Space A 6000×4000 JPEG can be 10-15MB. Resized to 1920×1280, it’s typically under 1MB.

Faster Page Loads Smaller source files mean WordPress creates smaller thumbnails too.

Automatic No manual resizing needed — works on every upload without extra steps.

Quality Preserved High-quality resampling algorithms maintain image sharpness.

FAQ#