WPMUDev Smush Pro: worth it for convenience, not compression alone

WPMUDev Smush Pro is a good image optimization suite, but it is not an automatic buy. It compresses images on upload or in bulk, resizes oversized files, adds missing image dimensions, supports lazy loading, converts images to WebP and AVIF, and can deliver media through its own CDN. It also includes Directory Smush for optimizing images outside the normal WordPress Media Library. That combination makes it much easier to improve a neglected image-heavy site without stitching together several plugins.

Its strongest feature is convenience. The interface is approachable, the settings cover the common PageSpeed recommendations, and current releases include background processing, activity logging, automatic resizing, LCP image handling, and exclusions for images that should not be lazy-loaded. The plugin works with common setups including Gutenberg, Elementor, WPBakery, WooCommerce, and multisite. WPMU DEV also has an unusually extensive documentation library and dedicated support, which matters when image delivery involves caching, sliders, page builders, or CDN rewrites.

There are useful concrete limits to know. The free version skips images over 5MB, while Smush Pro supports images up to 256MB. Pro also includes WebP and AVIF delivery and the Smush CDN; the official documentation lists membership CDN allowances ranging from 50GB on Basic to 500GB on Premium. The current pricing page lists the entry Pro plan at a promotional $36 per year, normally shown as $60 per year, and bundles Smush Pro with the rest of WPMU DEV’s Pro plugins. That is potentially excellent value for an agency, but less compelling if Smush is the only product you actually need.

The main weakness is overlap and complexity. Lazy loading and CDN rewriting can conflict with sliders, caching plugins, third-party CDNs, and themes that manipulate image attributes. WordPress.org support threads specifically document broken or missing slider images, dummy.png placeholders, SSL-related lazy-load failures, and cases where another CDN interfered. Recent changelog entries also show recurring fixes for CDN queries, Elementor integration, image resizing, bulk processing, and broken-image prevention. These are not reasons to avoid Smush outright, but they mean you should test it on a staging copy and avoid enabling multiple image-CDN or lazy-load systems at once.

Compared with ShortPixel and Imagify, Smush is usually easier to position as an all-in-one workflow, while those alternatives can be more attractive if compression results and usage-based pricing are your priority. EWWW Image Optimizer is the better fit when you want more local processing and greater control over where optimization happens. If you already pay for WPMU DEV, Smush Pro is an obvious choice because the bundle reduces the marginal cost and centralizes support. If you are buying only an image optimizer, start by testing the free Smush version and compare its actual file savings against ShortPixel, Imagify, and EWWW on your own media library.

Verdict: Smush Pro is worth it for hands-off optimization, CDN delivery, and multi-site management. It is situational rather than universally recommended because its biggest advantage is convenience and ecosystem integration, not a clearly unbeatable compression advantage.