01 · URL
Enter the page URL
Check a homepage, landing page, catalog, or product card. Milten runs a browser audit and accounts for selected region, network, and device.
SSLhttps://your-site.com
Website speed test and Core Web Vitals
Milten runs a page audit in a real browser, shows LCP, INP, CLS, and builds a clear fix plan: what slows the site down, what to fix first, and what uplift to expect after optimization.
Advanced settingsDevice, network, CPU, and page access
Launch profile
Match the scan to a real user
Milten applies the selected viewport, user agent, network profile, CPU slowdown, and regional node.
DeviceiPhone 13 Pro Max · 428x926 · DPR 3
ConditionsSlow 4G · 4
Geo🇳🇱 Amsterdam
Configured device
Network
CPU
How it works
How a website speed audit works
From one URL to a developer-ready task list: Milten shows not only a score, but also the specific causes of performance drops.
02 · SCAN
Scan speed and frontend
Lighthouse, Core Web Vitals, network, heavy scripts, layout shifts, and HTML semantics are combined into one mobile and desktop report.
Analysis42%
03 · PLAN
Get a fix plan
The report groups issues by impact: what will improve LCP, INP, CLS, user experience, and the final speed score fastest.
88
✓Fix CLS in cards+14
✓Preload hero font+6
✓Split SVG sprite+3
What we measure
What the Core Web Vitals check shows
Milten splits the overall score into clear loading, interactivity, and layout stability metrics so the team sees the cause, not just a number.
Speed index
First Contentful Paint
0.3s
Largest Contentful Paint
1.0s
Speed Index
0.9s
Cumulative Layout Shift
0.00
Interaction to Next Paint
100ms
Total Blocking Time
0ms
Tools
Tools for speed, code, and SEO audits
Run focused checks or combine them into one report: performance, accessibility, meta tags, JavaScript, CSS, and markup quality in one interface.
Speed scanner
LCP, INP, CLS, and website acceleration recommendations
INP debuggerFind long interactions and heavy handlers
BFCache testWhy the page is not restored from browser cache
SSR checkServer render and available HTML validation
CSS auditUnused styles, unstable blocks, and CLS risks
HTML validatorHTML errors, semantics, and basic SEO signals
AccessibilityWCAG, contrast, focus, and interface accessibility
Meta inspectorTitle, description, OpenGraph, and social cards
Design tokensToken, color, typography, and UI pattern checks
JS scannercoming soon
Memory leakscoming soon
React scannercoming soon
Comparison
Why Milten is more useful than a regular speed check
Classic services show a score. Milten adds prioritization, history, monitoring, and a working task list for the team.
| Feature | Milten | GTmetrix | PageSpeed | Pingdom |
|---|---|---|---|---|
| AI recommendations | Yes | No | No | No |
| Detailed prioritized report | Yes | Partial | Partial | No |
| Scans from multiple regions | Yes | Partial | No | Partial |
| Run history | Yes | Partial | No | Partial |
| Wide toolset | Yes | No | No | No |
| Monitoring and alerts | Yes | Yes | No | Yes |
| API access | Yes | No | Partial | No |
| Real user monitoring | Yes | No | No | No |
| Free plan | Yes | Yes | Yes | Partial |
24/7 monitoring
Website speed monitoring after releases
Connect important pages once. Milten will regularly check Core Web Vitals, record regressions after deploys, and send alerts before the drop becomes visible to users.
Regular checks
Keep result history to see speed trends, release impact, and seasonal load changes.
Regression alerts
If LCP, INP, or CLS crosses a threshold, the team gets a notification in Telegram, Slack, or through a webhook.
Release comparison
Every deploy becomes a point on the chart, making it easier to find the problematic version and roll it back.
Performanceexample-shop.com/catalog
88current score
1.7sLCP after rollback
24hobservation window
0006121824
TGLCP: 3.2s · regression after deploy #1204Telegram · #alerts-frontend14:32
SLCLS on /catalog rose to 0.18Slack · #performance14:35
OKRecovery: LCP 1.7s, score returned to 88auto · rollback #120515:18
FAQ
Frequently asked questions
What people usually ask about Core Web Vitals and the service.
What are Core Web Vitals and how do they affect SEO?+
Core Web Vitals are three key Google metrics (LCP, CLS, INP) used to evaluate real user experience. Since 2021 they have been a ranking factor. Improving CWV directly helps search visibility, especially on mobile.
How do I check my website speed?+
Enter the URL in the form above, choose Mobile or Desktop, and click “Run scan”. The scanner runs Lighthouse, HAR, and CrUX in the selected region and returns a report with 6 metrics, a waterfall, and a prioritized fix plan. No registration required.
What should I do with a low LCP value?+
Find the LCP element in the report, usually a hero image or heading, and work on it: preload fonts/images, reduce weight, use CDN, and remove render-blocking resources. Milten highlights the LCP element directly on the page screenshot.
How long does a website analysis take?+
One run takes 30–60 seconds. If 3 median runs are selected for accuracy, it takes 2–3 minutes. With 5 runs and slow-3G throttling, it can take up to 5 minutes.
How do I fix CLS issues?+
Three core rules: set width/height or aspect-ratio for all media, do not insert content above visible content, and use font-display: swap plus preload for fonts. The report shows each element that caused a shift and its contribution to total CLS.
Check website speed in a minute
Run a free Milten audit and get a report on Core Web Vitals, frontend issues, and first optimization steps.
Start analysis