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.
9.10 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.95 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
290 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.188
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
14.99 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.
17.87 s
Page Load Progression
1.1 s 2.2 s 3.3 s 4.4 s 5.5 s
6.6 s
7.7 s
8.9 sDPage Weight BudgetAction2.2 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
DJS Execution CostAction2414ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gub.uy/ | 1006ms | 15ms | 1ms | 1st |
| Unattributable | 609ms | 107ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-RDFBN794BE&cx=c>m=4e64k0 | 318ms | 236ms | 77ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-135104282-1 | 284ms | 175ms | 87ms | 3rd |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.ZlnNfWVM8UsLarGKlGoh3dNb3Fc2byEO1gmMvRrHnaA.js?v=3.7.1 | 68ms | 52ms | 13ms | 1st |
| https://www.google-analytics.com/analytics.js | 66ms | 58ms | 7ms | 3rd |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.PMStFjTMwcunmsGxDk8q4czTJK7I2mysM8mvkmmWslk.js?v=10.5.8 | 63ms | 62ms | 0ms | 1st |
CImage OptimizationAction19 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.
Performance issues directly impact user engagement and conversion rates.
CJS BundlesAction39 scripts, 160 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-RDFBN794BE&cx=c>m=4e64k0 | 173 KB | 72 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-135104282-1 | 125 KB | 63 KB (51%) | ✓ | 3rd |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.ZlnNfWVM8UsLarGKlGoh3dNb3Fc2byEO1gmMvRrHnaA.js?v=3.7.1 | 42 KB | 24 KB (58%) | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_mFzUkjUxStqgHC8aG7xRbdL6fE1PCi6EiNgqsEIWhqc.bxyPhfnLun1IE7QwO-Vh3hFY7I0Sfc8Hj0t_QBztg_g.js?tdoiov | 1 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_W9oEQrizuFnkM4OzaceIe9tdyg1ldQr1_H63Eoob7vI.xApuvlNHjozIgntNtw3IhDttpD6BSWjTZOVdbbzYV50.js?tdoiov | 10 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_V1oRQ-kJlXBZaEklOtPUe_1t8-l0RS94HJ3gsqxKikc.U6aWXXJhraNr5dOKlkyy4ROQYgzeU6WT3MAg9oJL4xE.js?v=10.5.8 | 3 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.PMStFjTMwcunmsGxDk8q4czTJK7I2mysM8mvkmmWslk.js?v=10.5.8 | 1 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_WmhavmnC0K35xZ9vLX51qtRqFT74puvZXIMWnNUYpbM.FFsaoTajfWeDE8ooiOAvc4LUHZKnz3rtX43Vu2cp0wY.js?v=6.2.0 | 4 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_w0iO3No0CsyHgJmryEbhwpkh5zx6m6dhvawBt4ufwyA.zQjwZ2vZrEgWhTEKe2JOAVwYSudK7nQGqAe77b3z9Fk.js?v=1.0.1 | 1 KB | — | ✓ | 1st |
| https://www.gub.uy/sites/gubuy/files/js/optimized/js_auGPmS4cF9TsbGXFseYml5QbO8vj66-oK7c2Mf0ZoIw.-TOzCv2ZfEIjAxpKFMvUrV4AQ-u6PBzesjHQ7vJi-JU.js?tdoiov | 1 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
CPage Weight InventoryAction98 resources · 2.2 MB · 160 KB savings availableREVIEW
~159.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 98 resources | 2.2 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingmust-revalidate, no-cache, privateREVIEW
must-revalidate, no-cache, private
| Directive | Value | Meaning |
|---|---|---|
| must-revalidate | — | Must recheck with server after expiry |
| no-cache | — | Cache but always revalidate first |
| private | — | Only browser cache, not CDN/proxy |
A+Third-Party Impact15% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (54 KB)PASS
Web fonts
4
54 KB total
Render-blocking
0
of 4
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall98 requests over 10301msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 609ms | 0 KB | — | UY$337/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 318ms | 173 KB | 42% | UY$176/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 284ms | 125 KB | 51% | UY$157/mo | Costly |
Google Analytics www.google-analytics.com | Analytics | 66ms | 21 KB | — | UY$36/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 609ms and costs ~UY$337/month
- Google Tag Manager adds 318ms and costs ~UY$176/month
- Google Tag Manager adds 284ms and costs ~UY$157/month
53% 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
Unattributable 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
Google Tag Manager takes 318ms 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 284ms 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
51% 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