Performance
· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.19 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.28 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
20 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.096
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.04 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
3.63 s
Page Load Progression
FPage Weight BudgetAction4.2 MB transferred, 278 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction141 scripts, 551 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.shopify.com/extensions/01a08568-79c3-7928-8c39-cd18f57f52b0/version_7b9bd968-2026-09-09_16h03m/assets/bss-b2b-js.js | 178 KB | 141 KB (79%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WJF8HFJ0XB&cx=c>m=4e6930 | 189 KB | 124 KB (65%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WJF8HFJ0XB | 189 KB | 72 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1455602919 | 145 KB | 65 KB (45%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 107 KB | 51 KB (48%) | ✓ | 3rd |
| https://valera.com/cdn/wpm/b80079e4cw22952a98p55856082md4f1b6b4m.js | 72 KB | 36 KB (51%) | ✓ | 3rd |
| https://d1dgtlbp2q4h7t.cloudfront.net/location-selector-storefront/dist/location-selector-storefront.js | 70 KB | 32 KB (46%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a08568-79c3-7928-8c39-cd18f57f52b0/version_7b9bd968-2026-09-09_16h03m/assets/bss-b2b-jquery-341.js | 54 KB | 29 KB (55%) | ✗ | 3rd |
| https://valera.com/web-pixels@80079e4cw22952a98p55856082md4f1b6b4/app/web-pixel-844529975@a3321ca85cf5aaf6b57585fcd8d67b3a~2/pixel.modern.js | 6 KB | — | ✓ | 3rd |
| https://valera.com/cdn/shop/t/26/assets/modules-basis.js?v=7117348240208911571751980154 | 2 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction278 resources · 4.2 MB · 551 KB savings availableFIX
~550.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 278 resources | 4.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization39 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1508ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://valera.com/en-fr | 435ms | 34ms | 12ms | 3rd |
| Unattributable | 288ms | 9ms | 0ms | 1st |
| https://cdn.shopify.com/extensions/01a08568-79c3-7928-8c39-cd18f57f52b0/version_7b9bd968-2026-09-09_16h03m/assets/bss-b2b-js.js | 129ms | 98ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WJF8HFJ0XB | 124ms | 84ms | 40ms | 3rd |
| https://valera.com/cdn/wpm/b80079e4cw22952a98p55856082md4f1b6b4m.js | 122ms | 67ms | 5ms | 3rd |
| https://js-eu1.hs-analytics.net/analytics/1788961800000/26266674.js | 118ms | 90ms | 2ms | 3rd |
| https://scripts.clarity.ms/0.8.69/clarity.js | 97ms | 89ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1455602919 | 83ms | 55ms | 27ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 57ms | 42ms | 9ms | 3rd |
| https://d1dgtlbp2q4h7t.cloudfront.net/location-selector-storefront/dist/location-selector-storefront.js | 54ms | 23ms | 10ms | 3rd |
CDocument CompressionActionDocument response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading9 fonts (720 KB)PASS
Web fonts
9
720 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
Fixing the unchecked items could save ~493 KB and ~986 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
AAsset Compression1 of 5 asset hosts still on gzipPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Network Waterfall278 requests over 4865msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
valera.com valera.com | Other | 435ms | 95 KB | — | €7/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 129ms | 178 KB | 79% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 124ms | 189 KB | 38% | €2/mo | Optional |
valera.com valera.com | Other | 122ms | 72 KB | 51% | €2/mo | Optional |
js-eu1.hs-analytics.net js-eu1.hs-analytics.net | Other | 118ms | 43 KB | — | €2/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 97ms | 25 KB | — | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 83ms | 145 KB | 45% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 57ms | 107 KB | 48% | €1/mo | Optional |
d1dgtlbp2q4h7t.cloudfront.net d1dgtlbp2q4h7t.cloudfront.net | Other | 54ms | 70 KB | 46% | €1/mo | Optional |
These scripts may cost more than they're worth
- valera.com adds 435ms and costs ~€7/month
81% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
valera.com takes 435ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
79% of cdn.shopify.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
51% of valera.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization64 images, 250 KB total, 118 KB wastedINFO
Image Optimization Audit
Total Images
64
Total Size
250 KB
Oversized
3
Wasted
118 KB