AI continuous monitoring keeps your pages tuned, and reports your Agentic Browsing readiness.
AI monitoring Agentic Browsing Why speed matters Why us How it works Pricing FAQ
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AI powered optimization

Website Speedy AI makes any website fast for humans and readable for AI agents - continuously improving performance and protecting your sales.

Website Speedy works out how your pages should load: what to defer, what to paint first, what to hold back. It applies that on every visit and re-tunes itself as your site changes. That work is graded twice now, because PageSpeed Insights scores your pages for agents as well as people.

See plans How it works
★★★★★ Rated 5 stars across Trustpilot, Capterra and G2 · 20,000+ sites
Works on and more
pagespeed_insights.report · bigbuda.ca after Website Speedy
Performance · scored 0 to 100
96
Mobilewas 30
99
Desktopwas 65
0.039
CLSwas 0.457

Agentic Browsing

1/3→3/3
✓ Layout stability (CLS) fixed for you
✓ llms.txt fixed for you
! Accessibility tree our team fixes it
One click integrations for every major platform
What you get

Website Speedy AI monitors and fixes performance issues as they happen, for humans and AI agents

Six outcomes. Four you already know. Two did not exist eighteen months ago, because your page now has a third audience: software acting on a person's behalf.

For people ↑

More conversions

Faster pages mean fewer drop offs between landing and checkout, so more of the traffic you already pay for turns into orders.

For people ↓

Lower bounce rate

Visitors leave slow pages before they load. A quicker first paint keeps them on the site long enough to engage.

For search SEO

Stronger rankings

Core Web Vitals (LCP, INP and CLS) are a confirmed part of Google's ranking systems, and a real edge when you and a competitor are otherwise close.

For ads ROAS

Better ad efficiency

Google and Meta reward fast landing pages with lower CPC and CPM, so the same ad budget reaches further.

For agents CLS

Agents click the right thing

Agents screenshot pages and calculate click targets. A layout that jumps mid read makes them tap the wrong button, or give up. Layout stability is one of the three checks Google's Agentic Browsing category grades.

For agents Accessibility Tree

Agents can read your page

Agents parse the accessibility tree rather than your visuals, because it is far cheaper than reasoning over raw HTML. Unlabelled buttons and images of text are invisible to them. Website Speedy identifies what agents cannot use and our team corrects it.

Always on

AI continuous monitoring and optimization

Performance work usually decays. A theme edit, a new app, a campaign banner, and the gains quietly disappear. Website Speedy watches for that and corrects it, on every page view, instead of leaving you to notice months later.

01

It measures real visits, not just lab tests

Loading behaviour is tracked continuously from actual visitors on real devices and connections. That is the same field data Google uses to report your Core Web Vitals.

02

It tunes each page type differently

A product page, a blog post and a filtered collection page slow down for different reasons, so each template gets its own settings rather than one global config.

03

It catches regressions as your site changes

Install an app or publish a new theme and something usually slows down or starts shifting. The engine spots it and adjusts, so one change does not quietly cost you months of performance.

The fifth score

PageSpeed Insights grades your site for humans and for agents

Google added an Agentic Browsing category to Lighthouse 13.3 in May 2026, and PageSpeed Insights picked it up within two weeks. It sits next to Performance, Accessibility, Best Practices and SEO, and it asks one question none of those do: if an AI agent landed on this page with a task, could it understand the page and complete it?

pagespeed.web.dev · categories
94Performance
97Accessibility
100Best Practices
100SEO
2/3Agentic Browsing

// it reports a pass ratio, not a score out of 100
// it is marked "under development", so the audits will change
// it does not feed into your Performance or SEO score
// WebMCP, the fourth audit, reads "not applicable" in the PageSpeed lab

01

Layout stability (CLS)

Agents take screenshots and compute click coordinates. If your layout shifts while they are reading it, they click the wrong element or abandon the task. Same metric as Core Web Vitals, now with a second job.

Website Speedy fixes this automatically
02

llms.txt at your domain root

A map of your site: what it is, what matters, where to read more. Without a valid one, an agent works out your structure from scratch on every visit. Missing, malformed or stuffed with keywords all count against you, and all three fail quietly. Website Speedy handles it.

Website Speedy fixes this automatically
03

Accessibility tree

Checks that interactive elements carry programmatic labels, that ARIA roles (Accessible Rich Internet Applications, the labels that tell software what an element is) are valid, and that every clickable thing has text an agent can reference. A site can score 100 on SEO and still fail this, because an unlabelled <div onclick> simply does not exist to an agent.

We tell you what is wrong and our team fixes it for you
Real customer results

Before and after, on live stores

Real PageSpeed Insights scores from customer sites, measured before Website Speedy was installed and after.

discountelectronics.com BigCommerce
Before
45Mobile
81Desktop
→
After
73Mobile
97Desktop
LCP 2.5s to 0.1sTBT 3944ms to 12msCLS 0.878 to 0.231
abcaudio.co.uk Wix
Before
46Mobile
85Desktop
→
After
88Mobile
98Desktop
LCP 1.9s to 0.3sTBT 1580ms to 18msCLS 0.987 to 0.224
afterstory.co Shopify
Before
48Mobile
87Desktop
→
After
75Mobile
99Desktop
LCP 1.8s to 0.2sTBT 1340ms to 15msCLS 0.545 to 0.200
bigbuda.ca Webflow
Before
30Mobile
65Desktop
→
After
96Mobile
99Desktop
LCP 2.7s to 0.6sTBT 1530ms to 18msCLS 0.457 to 0.039
Illustrative example

What the agentic side of that looks like

The Agentic Browsing category does not return a score out of 100, so it does not belong in the same dial as Performance. It returns a pass ratio across three checks, so it is shown as a pass ratio here: where a typical site starts, and where it lands once Website Speedy is running.

Before
1/3
x CLS 0.31, layout shifts
x llms.txt check failing
✓ accessibility tree passes
→
After
3/3
✓ CLS 0.02, stable
✓ llms.txt check passing
✓ accessibility tree passes
Why speed matters

Google rewards fast sites. So do your customers, and now so do their agents.

Page speed used to shape two things: where you rank, and whether the visitor stays long enough to buy. There is a third now. Here is what the data actually says.

It is a real ranking signal

Core Web Vitals (LCP, INP and CLS) are a confirmed part of Google's ranking systems. They will not outrank great content, but when you and a competitor are otherwise close, the faster page wins.

A tiebreaker, not magic, but a measurable edge

It moves revenue, directly

Google's own web.dev case studies make the link plain. Rakuten 24 found that good LCP scores drove a 53% increase in revenue per visitor and a 33% lift in conversion rate.

+53% revenue per visitor, Rakuten 24, web.dev

Around one in five orders is already AI influenced

Visa's global holiday study found that ~47% of US consumers had used AI for at least one shopping task. Salesforce, working from 1.5 billion shoppers, put AI and agents behind ~20% of global online sales in the 2025 holiday season, worth ~262 billion dollars. Those shoppers still land on your pages, and increasingly so does software acting on their behalf.

~20% of holiday online sales were AI influenced, Salesforce 2025

Want the full breakdown? Read Google's own guide to Core Web Vitals and search, or Chrome's Agentic Browsing scoring documentation.

Common question

Isn’t this just a CDN or a caching plugin?

No, and on most platforms those are not even an option. CDNs and caching plugins make your page arrive faster. Website Speedy changes how the browser renders it once it gets there, which is the layer both Core Web Vitals and Agentic Browsing are actually measuring. Two different jobs, and which ones you can even use depends on your platform.

If you are on a hosted platform

You usually cannot run a caching plugin or a full CDN at all

Hosted platforms manage their own infrastructure, so you do not get the server access a caching plugin needs, or full control over a CDN layer. The standard speed toolkit is mostly off the table. Website Speedy works entirely from the front end, which is why it is a dependable option where those solutions cannot reach.

If you already run a CDN or a cache

You can use a CDN or a caching plugin together with Website Speedy

Keep them. They are not competing with Website Speedy, they are doing a different job. A CDN and a cache handle delivery: edge servers, cached HTML, compression. Website Speedy handles what happens in the browser once those files arrive: render blocking CSS, third party script execution, load order, the largest visible element, and whether the layout holds still. Running both is the normal setup, and nothing needs to be removed or reconfigured first.

Q. "If my site is already cached and behind a CDN, why does it still score badly, for humans and for agents?"

Because caching and CDNs solve delivery, getting the same file to the visitor quickly. They do not change what the browser does next: waiting on render blocking stylesheets, executing heavy third party scripts before showing content, or loading every image at once and shoving the layout around as they land. That is the rendering layer, and it is where LCP, INP and CLS are won or lost. It is also, not coincidentally, where the agentic checks live. An agent does not care how fast your HTML left the edge, it cares whether the button is where it was two hundred milliseconds ago. Website Speedy works on exactly that layer, which is why it can still move your scores on a site that is already "optimized".

What it does CDN (for example Cloudflare) Caching plugin Website Speedy
Serves files from a closer or faster source Yes Partial Not its job
Caches and compresses your HTML and assets Partial Yes Not its job
Defers render blocking CSS in the browser No Limited Yes
Holds and async reinjects third party scripts No Limited Yes
Prioritizes the largest visible element (LCP) No No Yes
Stabilizes layout shift (CLS) No No Yes
Audits the accessibility tree agents read No No Yes, and we fix it
Works on locked down hosted platforms Limited Usually no Yes

// CDNs and caching plugins are good at delivery. Website Speedy is built for the rendering layer they do not touch, the one both Google and AI agents are grading.

How it works

Three steps to a faster site, and what runs under the hood

Setup takes minutes. Behind the scenes, the engine applies eight loading optimizations that target the real reasons browsers feel slow, plus the layout instability that trips up agents.

1

Connect your site

Sign up, submit your key URLs, and add Website Speedy through your platform's app store or a single header snippet. No plugins, no refactor.

2

The AI works out your strategy

It reads each template, picks the right optimization profile, and applies it on every page view, then re-tunes as real visitor data comes back.

3

Your scores climb

Re-test on PageSpeed Insights, GTmetrix or Lighthouse. Most sites reach 90+ on desktop and 70+ on mobile, and your agent readiness report lands in the dashboard.

The eight levers the AI operates

These are the optimizations available on every site. What changes per template, how aggressively each one is applied and in what order, is what the engine decides for you.

01
Lazy loading everything

Images, iframes, videos, scripts and stylesheets load only when needed, as the visitor scrolls toward them, with space reserved so nothing jumps.

// stops the browser downloading the whole page at once
02
Render blocking CSS deferral

Stylesheets that force the browser to wait are delayed, so content appears first and full styling follows.

// visitors stop staring at a blank screen
03
Third party script deferral

Analytics, tag managers and pixels are held back, then reinjected with async so they never block first paint.

// other people's code stops slowing your page
04
LCP focused prioritization

The main visible element is identified so the browser can paint it first, holding other media back briefly.

// the thing that matters most shows up first
05
Layout shift containment

Dimensions are reserved for deferred media and late injected elements, so content does not jump as the page fills in.

// CLS stays low, for readers and for agents
06
Real time resource interception

A MutationObserver watches the page build. New scripts or images injected mid load are caught and held back.

// nothing sneaks in to bloat the initial load
07
Interaction based loading

Nothing extra loads until the visitor scrolls, taps or moves the mouse. That first interaction triggers the rest.

// the page stays light until someone uses it
08
Agent readiness audit

The llms.txt check is handled for you. Your accessibility tree is scanned for unlabelled controls, invalid ARIA and images of text, and our team works through what it finds with you.

// llms.txt handled for you, accessibility handled with you
⚖

A note on testing integrity: testing tools, search engines and AI agents all expect to get the same page a real visitor gets. Everything above changes how resources load for everyone. It never shows a tester or a bot a different experience than a customer. That is also why we report accessibility tree problems rather than patching labels at runtime, because a label that only exists during an audit helps nobody.

Live in about five minutes

No build step. No plugins to maintain. No code to rewrite. If you would rather not touch the header yourself, the support team will set it up for you.

  • Sign up, or add the app from your platform's app store
  • Install the provided tag in the site header
  • Website Speedy handles the rest, automatically
your site header
<!-- Paste the provided tag into your site header. -->
<script src="https://cdn.websitespeedy.com/ws.min.js" async></script>
<script src="https://cdn.websitespeedy.com/ws-agent.min.js" defer></script>
<script>window.wsKey = "YOUR-SITE-KEY";</script>

// from here, the browser will:
//  lazy load images, iframes, scripts and CSS
//  defer render blocking stylesheets
//  hold third party scripts, then async reinject
//  prioritize the main visible element
//  reserve space so the layout never jumps
//  wait for first interaction to load the rest
Common question

How is this different from the other speed apps?

Most speed tools stop where the human audience stops. Optimizing images, deferring scripts and caching pages is a solved category with several good products in it. The gap is not there. The gap is that none of them tell you anything about the audience Google started grading in May 2026.

Capability Bundled speed apps (NitroPack and similar) Caching or optimization plugin Agency or developer retainer Website Speedy
Lazy loading, script deferral, asset optimization Yes Yes Yes Yes
Works on locked down hosted platforms Varies by platform Usually no Bounded by the platform Yes
Optimization strategy chosen per template by a model Preset profiles Manual config Manual, once Yes
Re-tunes itself from how real visitors experience the site No No Only if you pay again Yes
Reports your Agentic Browsing failures No No No Yes
Handles the llms.txt check for you No No If you brief them Yes
Ongoing cost after the work is done Subscription Subscription Hourly, every time Subscription, cancel anytime

// The speed rows are table stakes and we will not pretend otherwise. The agentic rows are where the difference currently sits.
// Competitor columns describe publicly documented feature sets at the time of writing. Verify before you rely on them, because this category moves quickly.

Common question

Can’t I just hire a developer for this?

A developer fixes it once. Website Speedy keeps fixing it, on every page load and every agent visit. Hiring a dev to speed up your website is real work and it helps. But it is a one time job with a hard ceiling, and that ceiling got lower the moment your page acquired a third audience that re-reads it on every visit.

A one off developer job

The static, structural fixes

Useful, visible work, the surface layer of a speed audit:

  • ✓Compress and resize images
  • ✓Remove unused apps and theme bloat
  • ✓Minify CSS and JavaScript files
  • ✓Tidy up the theme's Liquid or template code
  • ✓Defer a handful of known scripts by hand
Where the ceiling is
  • xIt is a one time snapshot that decays the next time you add an app or edit the theme
  • xIt is bounded by the platform, since a dev cannot restructure Shopify's own checkout scripts or app injections
  • xIt cannot adapt per page load, with no logic that reacts to what apps inject after the job is done
  • xLayout shift is the first thing to come back. One new app that injects a banner and your CLS, and your agentic check, regress silently
Website Speedy, a DIY tool

The same groundwork, plus the runtime layer

Everything a dev's checklist achieves, then the part they fundamentally cannot:

  • ✓Lazy loads images, iframes, scripts and CSS automatically
  • ✓Defers render blocking stylesheets and third party scripts
  • +Picks a strategy per template, so your product page and your blog get different treatment, decided by a model rather than one global config
  • +Runs on every page view and re-tunes from real field data, so optimization does not decay when you add an app
  • +Watches the DOM in real time, catching and deferring resources apps inject after load, before they shove your layout
  • +Holds the layout still, which is what keeps the agentic check passing month after month
  • +Audits the accessibility tree and your llms.txt, so your dev fixes the right five things instead of guessing
  • +Works where devs are blocked, since it is entirely front end and platform lock down is not a wall
No ongoing dev hours
  • ✓Set up once in about five minutes, with no code to maintain
  • ✓Manual expert review available if a site needs extra tuning
Pricing

Flexible plans for every business

Every paid plan includes the full AI optimization engine and the agent readiness report. Plans differ on monthly page views and support, not on which optimizations you get.

1 month free on yearly
Bigger than these plans?

Unlimited page views, subdomains, on premise installs and volume pricing

Tell us what you are running and we will put together a plan around it. Dedicated account manager, custom onboarding, a 24 hour speed fix warranty and volume based discounts.

14 day money back guarantee, no questions asked

14 day money back guarantee

Install it, measure it, and if the numbers do not move the way you expected, ask for your money back within 14 days. No questions asked.

All prices in USD. Cancel anytime, no contract and no minimum term.
Page views are counted by how often the Website Speedy script loads on your site.

Success stories

Faster pages, measured in revenue

Speed scores are the start. Here is what happened to the businesses behind them, within a single month of optimizing.

Born Outdoor
Outdoor gear · Wix
+167%orders
+101%gross sales
+33%conversion rate
+83%revenue

A slow site was losing shoppers before checkout. After optimization the store loaded faster and turned visitors into customers.

Certified MPT
Testing equipment · BigCommerce
+30%order rate
+55.8%revenue
+26.5%conversion rate
+19.7%avg order value

Slow load times were hurting Google rankings. Site performance improved by over 40%, lifting both traffic and on page engagement.

Hashtag Eyewear
Eyewear retail · Shopify
+21%gross sales
+6%orders
↓bounce rate
↑mobile speed

High ad spend was being wasted on a slow site. Faster pages and a smoother mobile experience recovered lost sales.

As seen on

Business Insider AP News NewsBreak Digital Journal The Globe and Mail

Over 20,000 signups for the Website Speedy AI PageSpeed Optimizer · 5 star rated on Trustpilot, Capterra and SourceForge

Questions

What teams ask before installing

Three concrete jobs, all live today. It reads each of your templates and picks an optimization strategy for that page type rather than applying one global config. It identifies the critical content and LCP element from the rendered page, so the right thing gets painted first. And it watches real visitor field data and re-tunes its own settings as your site changes. On the agentic side it also diagnoses what an AI agent cannot use on your page and tells you how to fix it.

Two of the three checks are handled for you automatically: layout stability and llms.txt. The third, the accessibility tree, lives in your markup, so we identify exactly which controls an agent cannot use and our team corrects them with you. How quickly you reach 3/3 depends on how much accessibility work your theme needs.

Not today. Google describes the category as experimental and it does not feed into your Performance, Accessibility, Best Practices or SEO scores. Treat it as an early signal rather than a ranking lever. The underlying work still pays off immediately, though, because CLS is a Core Web Vital and fixing it moves a metric that does count.

No. The same script will run the new engine. You will see it all in your new dashboard soon, without any reinstall or config change.

Yes. It is a DIY tool built for founders, marketers and developers alike. You submit your URLs, install it through your platform's app store or a single header snippet, and optimization runs automatically. If you would like help, the support team can set it up for you.

Yes, anywhere you can add a header script. That includes Shopify, Wix, BigCommerce, Webflow, Squarespace, WordPress, Ecwid, HubSpot, Duda and fully custom sites.

No. Website Speedy defers and reorders how resources load, it does not delete content. Everything still arrives, it just arrives in a smarter order, with space reserved so the layout does not jump and the rest loading on the first interaction.

It depends on your site, but most websites reach 90+ on desktop and 70+ on mobile. If you do not see the expected results, the team performs a manual review and makes further adjustments at no extra charge.

Your PageSpeed score improves immediately. Google's ranking signals, though, are based on real visitor data collected over a rolling window, so Core Web Vitals improvements in Search Console typically take about four to six weeks to show.

They keep working. Third party scripts are deferred, then reinjected with async after a short delay, so tracking continues to run without blocking your first paint.

Yes. Website Speedy only analyzes performance and loading times. It does not access or store sensitive information like login details or personal data.

Faster for people. Readable for agents.

Website Speedy tunes how every page loads, keeps it tuned as your site changes, and reports what AI browser agents can and cannot use.

See plans Talk to us

14 day money back guarantee on paid plans