Autopilot that checks its own work
Publisher-safe changes only, verified with a rescan and rolled back if something goes wrong. At most one change set a day, and it never touches JavaScript delay, CSS removal, embeds or your media library.
An honest
comparison.
No made-up
benchmarks.
Built-in features only, checked
against each
plugin’s own
website and documentation.
What is included, side by side
Where a plugin relies on a separate product or package, we say so.
| Capability | Speed of LightVersion 1.5.32 | WP Rocket | FlyingPress |
|---|---|---|---|
| Page cache on diskReady-made HTML files | YesGzip and Brotli copies | Yes | Yes |
| Cache preloading | YesMost important 50,000 URLs first | YesSitemap-based | YesCrawls your site |
| Cloudflare cache purge | YesCombined and throttled | Yes | Yes |
| Full-page caching at the Cloudflare edgeOn Cloudflare's free plan | YesOne click, via Cache Rules | NoSyncs purges with APO or rules you set up | Yes |
| Redis object cache built in | YesFalls back safely if Redis is down | No | YesRedis, needs phpredis |
| WebP and AVIF conversion | YesOn your server, originals kept | Separate productImagify or similar | Yes |
| Critical CSS | YesOpt-in | Yes | YesPart of Remove Unused CSS |
| Remove unused CSS | YesOpt-in | YesUses its cloud service | YesUses its cloud service |
| Delay JavaScript until interaction | YesOpt-in, ad loaders protected | Yes | Yes |
| Self-host Google Fonts | Yes | Yes | Yes |
| Lazy loading and YouTube previews | Yes | Yes | Yes |
| Database clean-up | Yes | Yes | Yes |
| Real-user Core Web VitalsField data from your visitors | YesOn by default, privacy-bounded | NoLab tests via Rocket Insights | Yes |
| WP-CLI commands | YesBuilt in | PartlySeparate package to install | Yes |
YesPartlySeparate productNo
Competitor details come from each vendor's public website and documentation, checked on 20 October 2026. Features change, so please confirm on their sites before you decide. WP Rocket and FlyingPress are trademarks of their owners and are named here only to describe their products. We don't publish speed comparisons: results depend on your host, theme and plugins, so the fairest test is your own site.
Sources
- WP Rocket — features
- WP Rocket — page caching
- WP Rocket — Cloudflare
- WP Rocket — Cloudflare APO
- WP Rocket — object cache
- WP Rocket — WebP
- WP Rocket — Critical CSS
- WP Rocket — Remove Unused CSS
- WP Rocket — Google Fonts
- WP Rocket — YouTube preview
- WP Rocket — Rocket Insights
- WP Rocket — WP-CLI
- FlyingPress — features
- FlyingPress — where pages are cached
- FlyingPress — preloading
- FlyingPress — Cloudflare
- FlyingPress — Redis
- FlyingPress — images
- FlyingPress — Remove Unused CSS
- FlyingPress — delay JavaScript
- FlyingPress — Google Fonts
- FlyingPress — lazy loading
- FlyingPress — YouTube previews
- FlyingPress — database
- FlyingPress — Core Web Vitals
- FlyingPress — WP-CLI
Built to be left switched on.
Beyond the checklist, these are the parts of Speed of Light we think matter most when you choose.
Plans for desktop and phone
The cloud renders each page at both widths, so the LCP hint and layout-shift fixes match the screen your visitor is actually using.
Alerts in plain English
Each alert says what is happening, what visitors notice and the next step, then clears itself once fixed.
Careful defaults
A fresh install leaves your login page and admin alone and keeps the risky tools off until you choose them.
One plan, every feature
Cloud engine, Autopilot, edge caching and Redis are on every tier. You only choose how many sites.
Moving over takes a few minutes
Speed of Light never overwrites another plugin's cache files, so the order matters.
1
Deactivate the old cache plugin
Two page caches fight each other. Turn the old one off first.
2
Install and activate
The page cache switches on and preloading starts straight away.
3
Let the cloud scan
Connect your license or trial, then review Insights and Recommendations.
Before you switch
Can I run Speed of Light next to WP Rocket or FlyingPress?
Not for page caching. Two full-page caches conflict, so deactivate the other plugin first. If another plugin still owns the page-cache drop-in, Speed of Light pauses its own page cache and tells you, rather than replacing or deleting the other plugin's file.
Where does this comparison come from?
From each vendor's public features pages and documentation, checked on 20 October 2026. The sources are listed under the table. If something has changed, email help@speedoflight.pro and we will update the page.
Why don't you publish speed benchmarks?
Results depend on your host, theme, plugins and traffic, so a chart from someone else's site tells you very little about yours. The 7-day free trial lets you measure on your own site instead.
Will my settings come across?
Speed of Light does not import other plugins' settings. On activation it starts with careful defaults, and Recommendations suggests changes tuned to your host, theme and plugins, each with a reason.
Test it on your own site.
Every feature for 7 days. Measure before and after, then decide.