Real-world monitoring, made simple

Continuous Website Performance Monitoring.

Understand how your website performs in the real world. Monitor speed, carbon impact, accessibility, and AI crawlability over time, not just in a single test.

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Free plan available. No credit card required.

8+ Core metrics tracked

100% Site-wide coverage

AI Powered insights

CO₂ Emissions tracked

What we do

Everything you need in one platform

Catch real-world Core Web Vitals issues

See how real users experience your site over time; not just one-off scores.

Make sustainability measurable

Track your website's carbon footprint and prove your commitment to reducing environmental impact.

Be visible to AI agents and search

Ensure your content is discoverable and usable by AI-powered search engines and agents.

Reduce legal and UX risk

Identify accessibility issues before they become compliance problems or hurt user experience.

Spot regressions

Catch performance issues automatically on every commit, not after users complain.

Prove improvements to stakeholders

Show concrete data on how your optimizations impact performance over time.

How it works

Insight in three simple steps

Connect your site

Add a URL and we handle the rest — no code, tags or scripts required.

We crawl & measure

PerfLeaf audits every page for speed, accessibility, security and emissions.

Get a plan of action

Receive a prioritised list of fixes with AI-powered recommendations and clear impact.

What we measure

One scan. 90+ datapoints. Zero guesswork.

Agencies juggle a Lighthouse run, an axe scan, an SEO crawler and a carbon calculator to report on a single client site. PerfLeaf collects it all in one automated crawl — audit-ready detail you can hand to clients or stakeholders as-is.

Core Web Vitals

8 metrics

LCP, CLS, FCP, TTFB, INP, TBT, SI and FID — the same signals Google uses to rank and rate real-world experience.

Page weight & assets

22 metrics

JS, CSS, image, font, video and audio breakdowns, third-party requests, caching, and a per-resource inventory of every request.

DOM & structure

9 metrics

Node count, tree depth, largest subtree and tag counts — catch bloated markup before it slows real users down.

Security posture

8+ checks

HTTPS, mixed content, CSP, security headers and cookie attributes — flag client risk before their customers do.

SEO & social metadata

16 fields

Titles, descriptions, canonicals, robots directives, Open Graph and Twitter cards, captured on every page you crawl.

Accessibility

WCAG scan

Automated violation scanning with severity, impacted elements and fix guidance — reduce legal exposure and prove compliance.

AI agent readiness (GEO)

15 signals

llms.txt, robots.txt and AI-crawler access analysis with a risk rating — future-proof clients for AI search and agents.

Carbon & sustainability

5 metrics

Every page's carbon footprint, calculated against green hosting status — turn ESG commitments into hard numbers.

90+ Datapoints per page, every scan

8 Categories of insight in one report

0 Scripts, tags or code to install

1 Crawl replaces a stack of point tools

Pricing

Start free. Scale as you grow.

No credit card required. Get core performance monitoring for free, then upgrade when you need more.

Sprout

Free

Free plan for small sites

Get Started

Monitor 1 site
Monitor 20 pages per site
Basic performance metrics
Single page crawling
Top Pages (GA4) crawling
Selected pages crawling
CO2 emissions tracking
Accessibility scan
AI Crawlibility
Monthly reports
Weekly reports
Git commit reports
AI-powered suggestions
AI action plan enrichment
Team logins

Grow

$69.99 /mo

Perfect for growing websites

Upgrade Now

Monitor 5 sites
Monitor 500 pages per site
Advanced performance metrics
Multi-page crawling
Top Pages (GA4) crawling
Selected pages crawling
CO2 emissions tracking
Accessibility scan
AI Crawlibility
Monthly reports
Weekly reports
Git commit reports
AI-powered suggestions
AI action plan enrichment
Team logins

Bloom

$199.99 /mo

For professional websites