# 11 sharp tools. One faster web.

Measure real-user performance, isolate bottlenecks, optimize delivery, and model the business impact without leaving the SpeedVitals workflow.

**Performance workspace** 11 tools

## 01 Measure

### Core Web Vitals Checker

Read the real-world LCP, INP, and CLS experienced by Chrome users, with current and historical CrUX data.

**LCP** **2.1s**  
**INP** **164ms**  
**CLS** **0.08**  
28-day field trend

## 02 Measure at scale

### Batch Core Web Vitals Checker

Audit up to 500 URLs together and turn site-wide field data into a clear optimization queue.

| URL  | LCP  | INP  |
|------|------|------|
| /**  | 2.2s | 178ms|
| /shop| 3.1s | 164ms|
| /blog| 2.4s | 238ms|

## 03 Optimize

### Image Compressor

Compress, resize, and convert images locally to AVIF, WebP, JPEG XL, and other modern formats.

| Format | Size    | Reduction |
|--------|---------|-----------|
| PNG    | 1.84 MB | −68%      |
| AVIF   | 586 KB  |           |

## 04 Benchmark

### CDN Performance Tracker

Compare CDN response times across providers, regions, percentiles, and historical windows.

| Provider    | Global p75 TTFB |
|-------------|------------------|
| Edge 01    | 178 ms           |
| Edge 02    | 246 ms           |
| Edge 03    | 413 ms           |

## 05 Model impact

### Web Performance ROI Calculator

Translate an LCP improvement into projected conversion lift, monthly gain, and annual net value.

**Estimated net impact** **$14,139**/ month  
**Conversion uplift** **+11.39%**

## 06 Diagnose

### HAR File Analyzer

Inspect request waterfalls, payload weight, status codes, and bottlenecks without uploading your HAR file.

0 ms8001.6 s

| File        | Status  |
|-------------|---------|
| document    |         |
| app.js      |         |
| hero.avif   |         |
| analytics   |         |

## 07 Optimize

### Critical CSS Generator

Extract above-the-fold styles for the viewports that matter and reduce render-blocking CSS.

```css
.hero { display: grid; min-height: 80vh;}
```
14.2 KB extracted

## 08 Validate

### HTTP/3 Checker

Verify QUIC, Alt-Svc, ALPN, DNS, and transport support instead of trusting a single response header.

01 **Browser** Client hello

| Protocol  | Status |
|-----------|--------|
| UDP 443   | QUIC   |
| Edge      | ALPN h3|

## 09 Diagnose

### LCP Finder

Identify the Largest Contentful Paint element across mobile, tablet, and desktop with visual evidence.

**LCP** **2.1s**  
**INP** **164ms**  
**CLS** **0.08**  
28-day field trend

## 10 Diagnose

### CLS Finder

Replay layout shifts frame by frame and isolate the elements causing visual instability on each viewport.

**LCP** **2.1s**  
**INP** **164ms**  
**CLS** **0.08**  
28-day field trend

## 11 Audit

### SEO Analyzer

Audit metadata, headings, links, structured data, crawlability, and other essential on-page signals.

```css
.hero { display: grid; min-height: 80vh;}
```
14.2 KB extracted

## Not sure where to begin?

### Start with what real users experience.

Check your Core Web Vitals first, then use the rest of the suite to explain and improve the result.