Performance
· 17 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.
5.38 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.74 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.58 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.20 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.
10.81 s
Page Load Progression
FPage Weight BudgetAction18.8 MB transferred, 119 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
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 Execution CostAction8405ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.snap.com/hls.min.1.5.18.js | 2154ms | 1067ms | 65ms | 3rd |
| Unattributable | 1952ms | 89ms | 0ms | 3rd |
| https://www.snap.com/mwp/chunks/chunk-LYIQRNA7.mjs | 1482ms | 1246ms | 1ms | 3rd |
| https://www.snap.com/ | 1420ms | 12ms | 74ms | 3rd |
| https://www.snap.com/mwp/chunks/chunk-HC527VHL.mjs | 733ms | 676ms | 0ms | 3rd |
| https://www.snap.com/mwp/chunks/dist-3QZ4CFYY.mjs | 609ms | 175ms | 1ms | 3rd |
| https://www.snap.com/mwp/main-5JCCQVRQ.mjs | 55ms | 39ms | 3ms | 3rd |
DJS BundlesAction34 scripts, 258 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.snap.com/hls.min.1.5.18.js | 160 KB | 92 KB (58%) | ✗ | 3rd |
| https://www.snap.com/mwp/main-5JCCQVRQ.mjs | 242 KB | 87 KB (36%) | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/dist-3QZ4CFYY.mjs | 60 KB | 43 KB (71%) | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-EA5DF6DX.mjs | 85 KB | 37 KB (43%) | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-HC527VHL.mjs | 2 KB | — | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-Z4XMHCXZ.mjs | 1 KB | — | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-2YTRTHV4.mjs | 18 KB | — | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-ESNOUB63.mjs | 3 KB | — | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-6RS35FE4.mjs | 1 KB | — | ✓ | 3rd |
| https://www.snap.com/mwp/chunks/chunk-IMUTJFGY.mjs | 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
DPage Weight InventoryAction119 resources · 18.8 MB · 258 KB savings availableFIX
~258.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 119 resources | 18.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction7 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
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
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
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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (342 KB)PASS
Web fonts
1
342 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~171 KB and ~342 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
Network Waterfall119 requests over 6486msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.snap.com www.snap.com | Other | 2154ms | 160 KB | 58% | €23/mo | Costly |
Unattributable Unattributable | Other | 1952ms | 0 KB | — | €21/mo | Costly |
www.snap.com www.snap.com | Other | 1482ms | 43 KB | — | €16/mo | Costly |
www.snap.com www.snap.com | Other | 1420ms | 81 KB | — | €15/mo | Costly |
www.snap.com www.snap.com | Other | 733ms | 2 KB | — | €8/mo | Costly |
www.snap.com www.snap.com | Other | 609ms | 60 KB | 71% | €7/mo | Costly |
www.snap.com www.snap.com | Other | 55ms | 242 KB | 36% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.snap.com adds 2154ms and costs ~€23/month
- Unattributable adds 1952ms and costs ~€21/month
- www.snap.com adds 1482ms and costs ~€16/month
- www.snap.com adds 1420ms and costs ~€15/month
- www.snap.com adds 733ms and costs ~€8/month
- www.snap.com adds 609ms and costs ~€7/month
100% 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
www.snap.com takes 2154ms 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
58% of www.snap.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
Unattributable takes 1952ms 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
www.snap.com takes 1482ms 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
www.snap.com takes 1420ms 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
www.snap.com takes 733ms 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
www.snap.com takes 609ms 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
71% of www.snap.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