Images are often the largest assets on a page and can quietly slow sites, cost bandwidth, and frustrate visitors—especially on mobile. Optimole is a WordPress-focused service that aims to fix that automatically: shrinking files, delivering them from a CDN, and choosing the best format and size per visitor. I’ve used Optimole for several years and ran tests to evaluate what it does, how it feels to use, its performance, and where it falls short.
What Optimole is
Optimole began as an image optimization plugin and has grown into a broader media optimization and delivery platform for WordPress. Its core components are:
– Automatic image optimization (real-time compression, smart resizing, multi-format delivery such as WebP/AVIF).
– A global CDN that serves images from 450+ edge locations.
– A cloud media library for centralized asset management and basic editing.
Why image optimization matters
Images can account for the majority of a page’s payload—often 70–85%. That big hero image or several unoptimized photos can make a page feel slow. Image optimization reduces file sizes without ruining visual quality, serves modern formats when available, provides appropriately sized images for different devices, and lazy-loads offscreen images. Together these changes reduce load times and improve perceived performance on slower connections.
Key features and how they work
– Automatic optimization: Uploaded images stay as originals while Optimole serves optimized versions, so you can roll back if needed. It balances quality and size automatically.
– Real-time resizing and format selection: Images are resized per visitor screen size and delivered in the best format supported by the browser. It can also adapt quality based on device and connection speed.
– Global CDN: With 450+ edge locations, images are served from a nearby edge, cutting latency for international visitors.
– One-click WordPress setup: Install the plugin, connect via an API key, and Optimole starts working with minimal configuration.
– Smart lazy loading: Images load only when needed, reducing initial page weight while trying to avoid heavy JavaScript.
– Centralized media library: Offload your media to Optimole’s cloud and manage, tag, or edit files (resizing, brightness/contrast, watermarking) from the dashboard.
Using Optimole
Setup is straightforward: install the plugin from the WordPress repo, create or connect your Optimole account, and paste the API key into the plugin settings. After that images are optimized automatically. Settings include a master enable toggle, lazy loading and smart scaling controls, and an Image Storage option to offload media to Optimole’s cloud. The Advanced section offers presets like Speed Optimized, Quality Optimized, or Custom for fine-tuning compression and format preferences.
My tests: image compression
I ran a simple before-and-after test on ten images (five PNGs and five JPGs). Results showed strong compression across varied content:
– Most images shrank by 80–95%.
– Some very aggressive reductions reached ~97%.
– One image reduced by only ~45%, depending on its original characteristics.
This sample indicates Optimole handles both JPGs and PNGs well across different contrast and color profiles.
Page load tests
I placed the test images on a single blog page and measured load times from multiple locations with Optimole off vs on. Highlights:
– Page size dropped roughly 716 KB in my tests.
– Load times improved substantially, with U.S. tests showing reductions up to ~650 ms.
– Key metrics like LCP, FCP, and Speed Index generally improved.
– TTFB was slightly worse in some runs (likely due to network variance), but visual load times improved enough that the tradeoff was acceptable in most cases.
– Improvements were smaller in Europe when the origin server was already located there, since there was less room for CDN gains.
Pricing and plans
Optimole has a usable free tier and several paid plans. The free plan supports up to 2,000 visits per month, gives unlimited image size/bandwidth, and includes the CDN, auto-scaling, and smart lazy-loading. The visit cap is the main limitation—fine for small or new sites but restrictive as traffic grows. Paid plans raise the visit cap and add features. Compared to competitors (EWWW, Imagify, WP Smush, ShortPixel), Optimole’s differentiator is bundling CDN delivery, on-the-fly transforms, and cloud offload/asset management. Some competitors may be cheaper if you only want local optimization, but few combine CDN + cloud offload as seamlessly.
Pros
– Truly automatic optimization with minimal ongoing work.
– Per-visitor real-time resizing and format selection.
– Large global CDN (450+ edges) for faster delivery worldwide.
– Smart lazy loading and connection-aware quality adjustments.
– Cloud library with basic editing and watermarking.
– Simple WordPress setup and helpful presets.
Cons
– Free plan limited to 2,000 visits/month.
– Paid plans can be more expensive than single-feature alternatives.
Bottom line
Optimole is a polished, all-in-one image optimization and delivery solution for WordPress. It compresses images effectively while keeping originals safe, serves them via a fast global CDN, and adds a cloud media library with editing tools. The free tier is a low-risk way to try it on small sites. For growing sites with international visitors or anyone who wants to offload media and simplify responsive image delivery, Optimole’s combination of CDN, real-time transforms, and asset management makes it a compelling choice. If you only need local optimization and want the cheapest option, some competitors may be a better fit, but few match Optimole’s integrated CDN and cloud features.
Have you tried Optimole? I’m interested to hear whether it became your image optimizer of choice and how it performed for your site.