Performance
· 26 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.
8.73 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
28.93 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.01 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.035
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
17.61 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.
32.09 s
Page Load Progression
FPage Weight BudgetAction8.6 MB transferred, 98 requestsFIX
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
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
FJS Execution CostAction6769ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://tag.goadopt.io/injector.js?website_code=83c6ae62-0926-450e-a47d-9fcf609403bf | 1987ms | 1039ms | 496ms | 3rd |
| https://www.caixa.gov.br/_layouts/15/core.js?rev=9kCBQNkpbQYAoiVcZpdkJA%3D%3DTAG0 | 1012ms | 610ms | 59ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-NDBHSL | 980ms | 796ms | 63ms | 3rd |
| Unattributable | 745ms | 9ms | 0ms | 1st |
| https://www.caixa.gov.br/Paginas/home-caixa.aspx | 716ms | 56ms | 10ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-PD5EBJFQ7X&cx=c>m=4e65k1 | 412ms | 332ms | 70ms | 3rd |
| https://scripts.clarity.ms/0.8.64/clarity.js | 342ms | 306ms | 9ms | 3rd |
| https://www.caixa.gov.br/Style%20Library/js/jquery-ui.min.js | 187ms | 86ms | 99ms | 1st |
| https://www.caixa.gov.br/_layouts/15/init.js?rev=RHfoRxFuwXZ%2BOo2JABCoHA%3D%3DTAG0 | 101ms | 65ms | 34ms | 1st |
| https://www.caixa.gov.br/Style%20Library/js/swiper-bundle.min.js | 100ms | 31ms | 33ms | 1st |
Showing top 10 of 13 scripts
DJS BundlesAction29 scripts, 403 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.caixa.gov.br/_layouts/15/core.js?rev=9kCBQNkpbQYAoiVcZpdkJA%3D%3DTAG0 | 119 KB | 108 KB (91%) | ✓ | 1st |
| https://www.caixa.gov.br/Style%20Library/js/jquery-ui.min.js | 89 KB | 77 KB (87%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-PD5EBJFQ7X&cx=c>m=4e65k1 | 169 KB | 68 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NDBHSL | 156 KB | 59 KB (38%) | ✓ | 3rd |
| https://www.caixa.gov.br/_layouts/15/init.js?rev=RHfoRxFuwXZ%2BOo2JABCoHA%3D%3DTAG0 | 76 KB | 54 KB (72%) | ✓ | 1st |
| https://www.caixa.gov.br/Style%20Library/js/swiper-bundle.min.js | 62 KB | 37 KB (61%) | ✗ | 1st |
| https://tag.goadopt.io/injector.js/v2/0072?website_code=83c6ae62-0926-450e-a47d-9fcf609403bf | 943 KB | — | ✓ | 3rd |
| https://www.caixa.gov.br/Style%20Library/js/slick.min.js | 15 KB | — | ✓ | 1st |
| https://www.caixa.gov.br/WebResource.axd?d=tSn0Tfbshk3gR-CnFveKRteygcT3hOonS0dgStc4kkYcWld2vuXgEEqbUsN8k1xpX3tQnstIMbjApUnWjvg4I9rQJwaj6l5A6vtQvWy1rMI1&t=638337626647498686 | 6 KB | — | ✓ | 1st |
| https://www.caixa.gov.br/Style%20Library/js/cabecalho.js | 4 KB | — | ✓ | 1st |
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
DPage Weight InventoryAction98 resources · 8.6 MB · 403 KB savings availableFIX
~403.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 98 resources | 8.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction34 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
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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact16% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (376 KB)PASS
Web fonts
5
376 KB total
Render-blocking
0
of 5
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
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 ~159 KB and ~318 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall98 requests over 9487msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
tag.goadopt.io tag.goadopt.io | Other | 1987ms | 1 KB | — | R$6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 980ms | 156 KB | 38% | R$3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 412ms | 169 KB | 40% | R$1/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 342ms | 25 KB | — | R$1/mo | Costly |
cdn.rybena.com.br cdn.rybena.com.br | Other | 72ms | 33 KB | — | R$0/mo | Optional |
These scripts may cost more than they're worth
- tag.goadopt.io adds 1987ms and costs ~R$6/month
- Google Tag Manager adds 980ms and costs ~R$3/month
- Google Tag Manager adds 412ms and costs ~R$1/month
- Microsoft Clarity adds 342ms and costs ~R$1/month
56% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
tag.goadopt.io takes 1987ms 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
Google Tag Manager takes 980ms 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
Google Tag Manager takes 412ms 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
Microsoft Clarity takes 342ms 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
Image Optimization62 images, 4805 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
62
Total Size
4805 KB