Everything a
fast
WordPress
site needs.
Switched
on safely.

Page cache, Cloudflare
edge, a real-Chrome cloud
engine and an Autopilot
that checks its own work.

Start 7-day free trialRead the docs
Fast first byte

Pages that are ready before anyone asks.

Your pages are built once, stored on disk and served before WordPress even loads. Everything personal stays live.

Page cache on disk

Ready-made HTML with gzip and Brotli copies made once at cache time. New installs refresh pages every 10 hours, and pages that carry a security token are always rebuilt within 10 hours, so guest forms and add-to-cart keep working.

Safe bypasses, built in

Some pages must never be shared. Speed of Light serves them fresh every time.

  • Logged-in users, even with a custom login cookie name
  • Carts, checkout, previews and password-protected pages
  • Responses that set a cookie or are marked private
  • Health names the cookie or header that stopped caching

Cloudflare edge, one click

Full-page edge caching on the free Cloudflare plan through Cache Rules. Purges are combined, staging copies can't touch the live zone, and deactivating removes the rules the plugin created.

Redis object cache, included

Speeds up the admin, logged-in visits and checkout. The connection is tested before it is enabled, and if Redis goes away WordPress falls back to database transients.

A preloader built for large sites

A database-backed queue warms the 50,000 most important URLs first and slows down by itself when your server is busy. The rest are cached on their first visit.

  1. Home page
  2. Recently changed
  3. Main archives
  4. Newest first
Autopilot

Speed fixes that check their own work.

On licensed and trial sites, Autopilot applies a short list of publisher-safe changes, rescans your pages and rolls back anything that causes a problem.

Scan

The cloud renders your real pages in headless Chrome at desktop and phone widths.

Apply

Only changes on the publisher-safe list, at most one change set per day.

Verify

A rescan checks the result. Problems are rolled back and blocked for 14 days.

What Autopilot may change

  • Page cache and static asset cache
  • LCP preload and fetch priority
  • Image dimensions and responsive image serving
  • Font optimization
  • Instant navigation

What it never touches

  • JavaScript delay
  • Critical CSS and Remove Unused CSS
  • Video embeds and their facades
  • Your media library files
  • Any setting you changed yourself
Core Web Vitals

Measured on real pages. Explained in plain English.

The cloud engine looks at what visitors actually see on a laptop and on a phone, then turns it into a plan for each page.

Cloud engine: desktop and phone renders

Each page is rendered in headless Chrome at both widths to produce critical and used CSS, the LCP element for each viewport, layout-shift fixes, and image and font plans. Pages that haven't been scanned yet can borrow a plan from pages of the same template, which matters on large sites.

Insights and Recommendations

Insights explains LCP, INP, CLS and TTFB problems page by page. Recommendations lists changes tuned to your host, theme and plugins, each with a reason, and applies only what you choose.

Real-user monitoring, privacy-bounded

When you enable it, Speed of Light records Core Web Vitals from real visits and forwards short summaries to the cloud so plans reflect what people actually experience. No IP addresses, query strings or cookies are stored with the metrics.

  • LCP
  • INP
  • CLS
  • FCP
  • TTFB
Lighter pages

Smaller images, faster fonts, quicker clicks.

The everyday wins are on from the start. The powerful ones wait until you are ready.

WebP and AVIF, originals kept

Modern copies are made on your own server after upload. Your originals stay in place and can be restored. Lazy loading skips the hero image, and missing dimensions are added to content images.

Self-hosted fonts

Google Fonts are copied to your server in the background, never during a visitor's request, then preloaded with sensible font-display rules.

Instant navigation

The next page starts loading when a visitor hovers a link. Links that change state, like add-to-cart, are never prefetched.

Off until you switch them on

Power tools for the last few milliseconds

These can change how a page looks or behaves, so they are opt-in. Autopilot never enables them for you.

  • Critical CSSInline what the first screen needs.
  • Remove Unused CSSKeeps stylesheet order and modern CSS intact.
  • Delay JavaScriptAd loaders and consent tools are never held back.
  • HTML minifyFalls back to the original page if anything looks wrong.
  • Video facadesYouTube and Vimeo show a light preview until the visitor clicks play.
Alerts and health

Know when something needs you. Only then.

Plain-English alerts that wait until a problem persists, tell you the next step, and clear themselves when it is fixed.

Alerts centre

One calm notice in wp-admin, a badge in the admin bar and the dashboard widget. Critical problems can also be emailed, at most once per alert per day, with a follow-up when resolved.

Health, database and tidy-ups

  • Health checks explain what is working and what is not
  • Scoped database clean-up of revisions, trash and expired transients
  • Debloat options you pick, such as emoji or XML-RPC removal
  • Login page and admin tweaks stay off until you turn them on
Developers

Scriptable from deploy to purge.

Run it from CI, your terminal or your own dashboard. Hooks let you extend alerts, caching rules and the preloader.

  • WP-CLI for clearing, preloading and the object cache
  • REST API under sol/v1 for administrators
  • Filters and actions documented in the developer docs
Developer docs
Terminal
# Clear the cache after a deploy
wp sol clear
# Warm it again straight away
wp sol preload --run
# Check the Redis object cache
wp sol object-cache status

# Warm more URLs on a very large site
add_filter( 'sol_preload_max_urls', function () {
    return 100000;
} );
Fresh install

Sensible on day one.

Here is exactly what is on when you activate it, and what waits for your say-so.

On from the first minute
  • Page cache
  • Preloading
  • Gzip and Brotli
  • LCP hints
  • Lazy loading
  • Speculative prefetch
Yours to switch on
  • Critical CSS
  • Remove Unused CSS
  • JavaScript delay
  • HTML minify
  • Cloudflare edge
  • Login and admin tweaks
Questions

Good to know

Is every feature included on every plan?
Yes. There is one plan with every feature. The tiers only differ by how many sites you can use it on: 1 site, 50 sites or unlimited sites.
Will Autopilot change my site without asking?
Autopilot only applies publisher-safe changes such as page cache, LCP hints, image dimensions, font optimization and instant navigation. It verifies each change with a rescan, rolls back problems, makes at most one change set per day and never touches JavaScript delay, Critical CSS, Remove Unused CSS, embeds or your media library. You can switch it off, and Off stays off.
Do I need Cloudflare or Redis?
No. The page cache works on its own. Cloudflare edge caching and the Redis object cache are optional layers you can add when your setup supports them.
What happens if my license expires?
Page caching and the local optimizations keep working. Cloud optimization, Autopilot, scans, updates and support stop until you renew.
Does the free trial include the cloud features?
Yes. Sites on the 7-day free trial get cloud optimization and Autopilot, the same as paid sites. A card is required and the trial converts to a paid plan unless you cancel.
Every feature, every plan

Try the whole engine on your own site.

7 days free, then from $20 a year. Install it, let Autopilot do the safe work, and switch on the power tools when you are ready.

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