A fast website comes from three layers plus the host underneath: a caching plugin so pages skip PHP and the database (WP Rocket, LiteSpeed Cache, FlyingPress); image optimisation to cut page weight (ShortPixel, Imagify, Optimole); and a CDN to serve assets from near each visitor (Bunny.net, KeyCDN, QUIC.cloud). All-in-one services (NitroPack, Uxify) bundle all of it for a hands-off Core Web Vitals win. This guide groups the major tools by the layer they fix so you pick the right one rather than stacking duplicates. HostList is independent and accepts no sponsorship or affiliate commission from the tools listed.
Stores rendered pages and assets so repeat requests skip PHP and the database. The single biggest WordPress speed lever.
A free, full-featured caching plugin that uses server-level caching on LiteSpeed hosts, often the fastest option.
A long-established, highly configurable free caching plugin with every cache layer exposed for tuning.
A simple, lightweight caching plugin with a free tier that covers the basics and a Premium for optimisation.
The most popular premium WordPress caching plugin, tuned to improve Core Web Vitals out of the box.
Bundles caching, code, image, and sometimes CDN optimisation into one tool or service, aimed at Core Web Vitals with minimal setup.
A caching and optimisation plugin built by a Core Web Vitals specialist, favoured for real-world load speed.
An all-in-one performance SaaS that bundles caching, a CDN, and image and code optimisation to lift Core Web Vitals fast.
A lightweight optimisation plugin that disables bloat and unloads unused scripts, complementing a caching plugin.
A performance service focused on Core Web Vitals, applying server-side and edge optimisation to lift real-user scores.
A three-in-one plugin combining database cleanup, page caching, and image compression from the UpdraftPlus team.
Compresses images and converts them to WebP/AVIF. Images are usually the heaviest part of a page, so this is a fast win.
Image compression and WebP/AVIF conversion from the WP Rocket team, with a simple plugin and free tier.
A cloud image optimisation service that serves resized, next-gen images from its own CDN, on the fly.
A popular image optimisation service that compresses and converts to WebP/AVIF, via a WordPress plugin or API.
Serves assets (and sometimes pages) from edge locations worldwide, cutting latency for distant visitors. Complements a cache.
A fast, developer-friendly CDN with simple pay-as-you-go pricing, popular for speeding up sites affordably.
A straightforward, pay-as-you-go CDN with HTTP/3, image processing, and a developer-friendly control panel.
The CDN and edge-caching network built for LiteSpeed Cache, adding image optimisation and full-page edge caching.
Three levers deliver most of the win, in order: a caching plugin so pages skip PHP and the database (WP Rocket, LiteSpeed Cache on LiteSpeed servers, or FlyingPress), image optimisation to cut page weight (ShortPixel, Imagify, Optimole), and a CDN to serve assets from near each visitor (Bunny.net, KeyCDN, QUIC.cloud). Fixing the host underneath matters too: a slow server response (TTFB) caps everything a plugin can do.
They do different jobs and work together. A caching plugin generates and optimises pages at your origin so requests skip PHP; a CDN distributes those files (and sometimes pages) from edge locations worldwide to cut latency for distant visitors. Most fast sites run both: a cache like WP Rocket or LiteSpeed Cache plus a CDN like Bunny.net or Cloudflare.
All-in-one services (NitroPack, Uxify, and to a degree FlyingPress) bundle caching, code optimisation, image optimisation, and often a CDN into a single tool or cloud service, aiming to lift Core Web Vitals with minimal setup. They trade some control for convenience and a fast result. The alternative is assembling a caching plugin, an image optimiser, and a CDN yourself, which gives more control on your own stack.
Only partly. Caching, images, and a CDN reduce work and distance, but they cannot fully hide a slow server response time (TTFB). If your host is slow to generate the first byte, even a perfectly optimised site stays sluggish. That is why HostList ranks hosts on measured performance: the tools here build on top of the host, they do not replace a good one.
No paid placement and no fabricated scores. This is an editorial guide organised by category and use case, not a pay-to-appear list. Tools are grouped so you can pick the right one for the layer you need rather than stacking duplicates.