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.
1.48 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.17 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
80 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.190
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.02 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.
7.27 s
Page Load Progression
FPage Weight BudgetAction9.0 MB transferred, 78 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
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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DPage Weight InventoryAction78 resources · 9.0 MB · 126 KB savings availableFIX
~126.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 78 resources | 9.0 MiB | ||||||
CImage OptimizationAction33 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
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
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
CJS Execution CostAction1055ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.sp.gov.br/sp | 443ms | 11ms | 7ms | 3rd |
| Unattributable | 249ms | 34ms | 0ms | 3rd |
| https://www.sp.gov.br/statics/js/jquery-3.3.1.min.js | 186ms | 108ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-G3W3M6971H&cx=c>m=4e64h1 | 94ms | 70ms | 22ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WNLJX84Q | 84ms | 69ms | 14ms | 3rd |
BJS Bundles15 scripts, 126 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-G3W3M6971H&cx=c>m=4e64h1 | 157 KB | 66 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WNLJX84Q | 122 KB | 61 KB (50%) | ✓ | 3rd |
| https://www.sp.gov.br/statics/js/agenda.js | 3 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/statics/slick/slick/slick.min.js | 11 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/statics/js/bootstrap.bundle.min.js | 22 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/statics/js/custom.js | 4 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/contenthandler/!ut/p/digest!7DcSxmKZu2u-iNfSnQE-eA/mashup/ra:collection?themeID=ZJ_086423G0313SC06QD0S50410V0&locale=en&locale=pt-BR&locale=pt&mime-type=text%2Fjavascript&lm=1774411296000&entry=wp_client_main__0.0%3Ahead_js&entry=wp_client_ext__0.0%3Ahead_js&entry=wp_client_logging__0.0%3Ahead_js&entry=wp_client_tracing__0.0%3Ahead_js&entry=wp_modules__0.0%3Ahead_js&entry=wp_photon_dom__0.0%3Ahead_js&entry=wp_toolbar_common__0.0%3Ahead_js&entry=wp_dialog_util__0.0%3Ahead_js&entry=wp_dialog_draggable__0.0%3Ahead_js&entry=wp_dialog_main__0.0%3Ahead_js&entry=wp_a11y__0.0%3Ahead_js&entry=wp_state_page__0.0%3Ahead_js&entry=wp_theme_portal_85__0.0%3Ahead_js&entry=wp_theme_utils__0.0%3Ahead_js&entry=wp_toolbar_viewframe_validator__0.0%3Ahead_js&entry=wp_analytics_aggregator__0.0%3Ahead_js | 26 KB | — | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js | 18 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/statics/js/script-acessibilidade.js | 1 KB | — | ✓ | 3rd |
| https://www.sp.gov.br/contenthandler/!ut/p/digest!Dal1CObNXebH8jDfutHTCA/mashup/ra:collection?themeID=ZJ_086423G0313SC06QD0S50410V0&locale=en&locale=pt-BR&locale=pt&mime-type=text%2Fjavascript&lm=1776657877115&entry=wp_portal__0.0%3Aconfig_config_static&entry=wcm_config__0.0%3Aconfig_config_static&entry=wcm_inplaceEdit__0.0%3Aconfig_config_static | 3 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
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 Loading7 fonts (711 KB)PASS
Web fonts
7
711 KB total
Render-blocking
0
of 7
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
- 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
- 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
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 ~492 KB and ~984 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
AHTTP Cachingmax-age=600 (10 minutes)PASS
public, max-age=600
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 600 | Cache for 10 minutes |
Network Waterfall78 requests over 5816msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.sp.gov.br www.sp.gov.br | Other | 443ms | 24 KB | — | R$1/mo | Costly |
Unattributable Unattributable | Other | 249ms | 0 KB | — | R$1/mo | Costly |
www.sp.gov.br www.sp.gov.br | Other | 186ms | 30 KB | — | R$1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 94ms | 157 KB | 42% | R$0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 84ms | 122 KB | 50% | R$0/mo | Optional |
These scripts may cost more than they're worth
- www.sp.gov.br adds 443ms and costs ~R$1/month
- Unattributable adds 249ms and costs ~R$1/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.sp.gov.br takes 443ms 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 249ms 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
50% of Google Tag Manager'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