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8 best and free image CDN for WordPress 2021

Last updated on October 18, 2021 | By

We selected the best and free wordpress image CDN plugins and services that will help with fixing your image speed issues and consequently improve the Largest Contentful Paint (LCP). All plugins and services on the list have a free plan(features).

Jetpack (Free Unlimited Image CDN)

Jetpack has a free, unlimited bandwidth image CDN option with lazyload feature. To enable it, you need to install Jetpack and go to “Performance” and “Enable Site Accelerator” -> “Speed up Image load times”. 

Limitations: You need to have a wordpress.com login credential to use Jetpack services and enable these features. Jetpack plugin may add bloat code(CSS, JS)  to your website and need integration with your cache plugin(if installed). It doesn’t have SVG support, and you need manually add background images to the CDN.

It doesn’t have cache invalidations. If you want to “refresh” an image, you will need to change its file name or upload a new image.

Imagekit (Free 20GB/month)

Imagekit.io free plan offers 20GB of traffic monthly. It has SVG and an automatic background image CDN support. Support of older (3.3 or higher) WordPress versions is also a plus from the Imagekit plugin. Need integration with your cache plugin.

Imagekit offers free custom URL endpoints: “https://ik.imagekit.io/your_imagekit_id” 

Cloudflare (Unlimited reverse proxy CDN)

Cloudflare’s free plan offers CDN through a reverse proxy. A reverse proxy is a server that sits in front of web servers and forwards client (e.g. web browser) requests to those web servers from Cloudflare. Reverse proxies are typically implemented to help increase security, performance, and reliability. Using Cloudflare free CDN will greatly improve your image loading time.

Cloudflare offers Mirage image optimization which is currently available for Pro, Business, and Enterprise plans. It helps speed up image loading four key attributes:

Cloudflare also offers Automatic Platform Optimizations (APO) on paid plans, a service where Cloudflare serves your entire WordPress site from its network, including HTML.

Optimole (Free 5k visits/month)

Optimole plugin has a free 5,000 visits CDN image monthly plan. Need integration with your cache plugin. The plugin hosts your images on the cloud to improve their load time. Optimole has lazyload feature.

Nitropack CDN (Free 1GB/month)

Nitropack free plan has 1 GB CDN bandwidth per month. It optimizes and loads images on the CDN. Has lazyload support.

Start Nitropack with a 5% discount with our reflink, use coupon WPALPHA at checkout! ️‍🔥

Smush

Smush has lazyload, and a built-in free/unlimited compressing tool(up to 5Mb size) for optimizing your images. No CDN on the free plan.

Shortpixel

ShortPixel comes with 100 free credits/month for image optimization. No CDN on the free plan.

Squoosh.app (Not a plugin)

Squoosh is an image compressor website and PWA(Progressive Web App) from Google Chrome engineers. Upload your image and select the %(percentage) of optimization you want and the format you want to convert. See the image preview, and slide to see the image difference.

How to test my website image loading time?

You can use free services such as ByteCheck and compare the load times using the image URL.

wpalpha cdn speed test 2
Load time using Jetpack CDN
wpalpha cdn speed test 2
Load time using server URL(AWS)

In this case, using the Jetpack free CDN nets a better image loading time.

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