Performance
· 15 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.
1.86 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.37 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
309 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.71 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.
4.67 s
Page Load Progression
859 ms
1.7 s 2.6 s
3.4 s
4.3 s
5.2 s 6.0 s
6.9 sFPage Weight BudgetAction8.2 MB transferred, 461 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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
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 CostAction4852ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.tradingview.com/ | 1455ms | 87ms | 6ms | 3rd |
| https://static.tradingview.com/static/bundles/41966.06597657fc835f300662.js | 1379ms | 242ms | 5ms | 3rd |
| Unattributable | 591ms | 7ms | 0ms | 3rd |
| https://static.tradingview.com/static/bundles/29365.438fd979971c174d6b81.js | 468ms | 210ms | 3ms | 3rd |
| https://static.tradingview.com/static/bundles/main_page.9f3d3122f5dfbd8e53ed.js | 419ms | 316ms | 3ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604130101/pubads_impl.js | 171ms | 67ms | 13ms | 3rd |
| https://static.tradingview.com/static/bundles/base.ab928edb76c0f6dab3d9.js | 160ms | 147ms | 0ms | 3rd |
| https://static.tradingview.com/static/bundles/lightweight-minichart-social.6188708e25142beea670.js | 71ms | 51ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YVVRYGL0E0 | 70ms | 57ms | 11ms | 3rd |
| https://static.tradingview.com/static/bundles/70071.d4a1dac32e09c927c721.js | 70ms | 69ms | 0ms | 3rd |
DJS BundlesAction130 scripts, 427 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604130101/pubads_impl.js | 188 KB | 142 KB (76%) | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/toast-layer.2803415bcfcb3ab3cde1.js | 78 KB | 77 KB (99%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 96 KB | 71 KB (75%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YVVRYGL0E0 | 157 KB | 65 KB (42%) | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/41966.06597657fc835f300662.js | 60 KB | 25 KB (43%) | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/99827.1a1981536d95e5aad54c.js | 35 KB | 24 KB (72%) | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/26731.1752bf88905d9db6ef4e.js | 36 KB | 22 KB (61%) | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/89019.fbcfc31d8eb19d75690d.js | 10 KB | — | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/track-ui-events.e1c7e9639e2b5d921b02.js | 6 KB | — | ✓ | 3rd |
| https://static.tradingview.com/static/bundles/en.11788.fbc54db47d6ca20d59fb.js | 8 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 InventoryAction461 resources · 8.2 MB · 427 KB savings availableFIX
~427.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 461 resources | 8.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization113 images, 0 KB saveableREVIEW
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 Loading1 fonts (19 KB)PASS
Web fonts
1
19 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall461 requests over 4548msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.tradingview.com www.tradingview.com | Other | 1455ms | 219 KB | — | €23/mo | Costly |
static.tradingview.com static.tradingview.com | Other | 1379ms | 60 KB | 43% | €22/mo | Costly |
Unattributable Unattributable | Other | 591ms | 0 KB | — | €9/mo | Costly |
static.tradingview.com static.tradingview.com | Other | 468ms | 46 KB | — | €7/mo | Costly |
static.tradingview.com static.tradingview.com | Other | 419ms | 46 KB | — | €7/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 171ms | 188 KB | 76% | €3/mo | Optional |
static.tradingview.com static.tradingview.com | Other | 160ms | 2 KB | — | €3/mo | Optional |
static.tradingview.com static.tradingview.com | Other | 71ms | 10 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 70ms | 157 KB | 42% | €1/mo | Optional |
static.tradingview.com static.tradingview.com | Other | 70ms | 11 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.tradingview.com adds 1455ms and costs ~€23/month
- static.tradingview.com adds 1379ms and costs ~€22/month
- Unattributable adds 591ms and costs ~€9/month
- static.tradingview.com adds 468ms and costs ~€7/month
- static.tradingview.com adds 419ms 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.tradingview.com takes 1455ms 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
static.tradingview.com takes 1379ms 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
Unattributable takes 591ms 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
static.tradingview.com takes 468ms 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
static.tradingview.com takes 419ms 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
76% of securepubads.g.doubleclick.net'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