Yes, ResizeFly is free to use. It is available as a free plugin on WordPress.org.

How many websites use ResizeFly?

ResizeFly has 10 active installations as tracked by WordPress.org.

What are the best ResizeFly alternatives?

Popular alternatives to ResizeFly include Image Rotation Fixer, Disable JPEG Compression, Dynamic Image Resizer. You can compare them side-by-side on our comparison pages.

Does ResizeFly work with the latest WordPress?

ResizeFly has been tested up to WordPress 5.6.17. It requires WordPress 4.7.0+ and PHP 5.6+.

PluginSift

ResizeFly

Name: ResizeFly
Rating: 5 (5 reviews)
Author: alpipego

Dynamically resize your WordPress images on the fly. Upload them once and don't worry about missing or new image sizes.

By alpipego·Jpg·Free

5(5 reviews)

·10 active installs·Updated 5 years ago

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As of April 2026, ResizeFly is a WordPress jpg plugin with 10 active installations and a 5/5 rating from 5 reviews. It has been downloaded 9.1K+ times in total. Requires WordPress 4.7.0+ and PHP 5.6+. Available on WordPress.org since 2016. Last updated 5 years ago — may have compatibility concerns. Top alternative: Image Rotation Fixer.

5/55 reviews

10active installs

9.1K+total downloads

10 yearssince 2016

Overview

Instead of creating image sizes on upload, this plugin only creates them when requested.

Normally after activating a new theme or plugin that adds new image sizes, you will have to use a tool like Regenerate Thumbnails to create the newly registered image sizes. Depending on the size of the media library and the “power” of your server, this might take a while or even take several tries to process all your images; and in the end, you don’t even know if you’ll need all of the resized images.

This plugin takes care of the resizing dynamically and creates the requested size the moment it is first requested—and only when it is requested.