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https://Psifos-participa.uchile.cl/psifos

Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
4
REVIEW
6
PASS
13
INFO
4

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

6.60 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

7.36 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

626 ms

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.

8.32 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.

8.03 s

Page Load Progression

565 ms
1.1 s
1.7 s
2.3 s
2.8 s
3.4 s
4.0 s
4.5 s
Checks
27
13 PASS 6 REVIEW 4 FIX
F
Page Weight Budget
Action
3.8 MB transferred, 18 requests
FIX
3.8 MB transferred, 18 requests
Warning::
Page weighs 6.5 MB (3.8 MB transferred)
Warning::
Images are 2.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.5 MB
Warning::
JavaScript is 834 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 834 KB
Info::
Fonts are 400 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 400 KB
Info::
18 HTTP requests
Info::
Estimated 0.80 g CO2 per page load
3.8 MB / 2.4 MB budget
3.8 MB transferred
18 requests
0.80 g CO2 per page load
Images 2.5 MiB 65%
JavaScript 834.5 KiB 21%
Fonts 399.6 KiB 10%
CSS 69.9 KiB 2%
Other 28.6 KiB 1%
Other 10.1 KiB 0%
HTML 1.1 KiB 0%
Other 439 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

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.

Why this matters

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.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

F
JS Bundles
Action
4 scripts, 641 KB unused
FIX
4 scripts, 641 KB unused
Warning::
https://psifos-participa.uchile.cl/assets/index-Bf...: 641 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 641 KB
641 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://psifos-participa.uchile.cl/assets/index-BfOl8RJD.js822 KB641 KB (78%)✓1st
https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js6 KB—✓3rd
https://kit.fontawesome.com/c67b07b3fc.js6 KB—✓3rd
https://psifos-participa.uchile.cl/node_modules/@creativebulma/bulma-collapsible/dist/js/bulma-collapsible.min.js1 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
18 resources · 3.8 MB · 641 KB savings available
FIX
18 resources · 3.8 MB · 641 KB savings available
Warning::
Page weight 3.8 MB exceeds 1 MB target by 2.8 MB
Got: 3.8 MB Expected: ≤ 1 MB
Info::
~641 KB of savings available
Info::
9 third-party resources (1% of weight)
Info::
3 resources over 200KB
18 resources · 3.8 MiB · 9 third-party 2.8 MiB over 1MB target
Image 66% · 2.5 MiB
JavaScript 21% · 834.5 KiB
Font 10% · 399.6 KiB
CSS 3% · 98.5 KiB
Document 0% · 1.1 KiB
Other 0% · 439 B

~641.3 KiB of savings available

Remove unused JavaScript: 641.3 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
JS Execution Cost
Action
1230ms total JS execution
REVIEW
1230ms total JS execution
Warning::
https://psifos-participa.uchile.cl/assets/index-Bf...: 739ms CPU time
Warning::
Unattributable: 397ms CPU time
Info::
https://psifos-participa.uchile.cl/psifos: 94ms CPU time
Info::
Third-party scripts: 397ms (32% of total)

Main Thread Breakdown

Script Evaluation 59% Other 32% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
https://psifos-participa.uchile.cl/assets/index-BfOl8RJD.js739ms718ms9ms1st
Unattributable397ms9ms0ms3rd
https://psifos-participa.uchile.cl/psifos94ms4ms0ms1st
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (40.1 KiB of 3.8 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 2.5 MB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (400 KB)
PASS
1 fonts (400 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

400 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 6.6 s LCP 7.4 shttps://psifos-participa.uchile.cl/assets/Arial-DHXpgMHe.ttfArial-DHXpgMHe.ttf https://psifos-participa.uchile.cl/assets/Arial-DHXpgMHe.ttf — 399.6 KiB — 429 ms — font-display: swap
Arial-DHXpgMHe.ttf ttf swap
Size 400 KB
Load time 429 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
  • 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 ~320 KB and ~640 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
3 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
18 requests over 4486ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 6.6 s LCP 7.4 shttps://psifos-participa.uchile.cl/psifos/psifos https://psifos-participa.uchile.cl/psifos — 200 — 1.1 KiB — 659 ms — h2https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.jscdnjs.cloudflare.com/ajax/libs/unde... https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js — 200 — 5.8 KiB — 95 ms — h2https://kit.fontawesome.com/c67b07b3fc.jskit.fontawesome.com/c67b07b3fc.js https://kit.fontawesome.com/c67b07b3fc.js — 200 — 5.7 KiB — 341 ms — h2https://psifos-participa.uchile.cl/node_modules/@creativebulma/bulma-collapsible/dist/js/bulma-collapsible.min.js/node_modules/@creativebulma/bulma-... https://psifos-participa.uchile.cl/node_modules/@creativebulma/bulma-collapsible/dist/js/bulma-collapsible.min.js — 200 — 1.0 KiB — 640 ms — h2https://psifos-participa.uchile.cl/assets/index-BfOl8RJD.js/assets/index-BfOl8RJD.js https://psifos-participa.uchile.cl/assets/index-BfOl8RJD.js — 200 — 821.9 KiB — 1.6 s — h2https://psifos-participa.uchile.cl/assets/index-Dj2V825s.css/assets/index-Dj2V825s.css https://psifos-participa.uchile.cl/assets/index-Dj2V825s.css — 200 — 69.9 KiB — 1.0 s — h2https://psifos-participa.uchile.cl/manifest.json/manifest.json https://psifos-participa.uchile.cl/manifest.json — 200 — 439 B — 680 ms — h2https://ka-f.fontawesome.com/releases/v6.7.2/css/free.min.css?token=c67b07b3fcka-f.fontawesome.com/releases/v6.7.... https://ka-f.fontawesome.com/releases/v6.7.2/css/free.min.css?token=c67b07b3fc — 200 — 21.5 KiB — 125 ms — h3https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v4-shims.min.css?token=c67b07b3fcka-f.fontawesome.com/releases/v6.7.... https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v4-shims.min.css?token=c67b07b3fc — 200 — 4.7 KiB — 121 ms — h3https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v5-font-face.min.css?token=c67b07b3fcka-f.fontawesome.com/releases/v6.7.... https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v5-font-face.min.css?token=c67b07b3fc — 200 — 1.0 KiB — 89 ms — h3https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v4-font-face.min.css?token=c67b07b3fcka-f.fontawesome.com/releases/v6.7.... https://ka-f.fontawesome.com/releases/v6.7.2/css/free-v4-font-face.min.css?token=c67b07b3fc — 200 — 1.3 KiB — 116 ms — h3data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20404.64%2080.11'%3…www.w3.org/2000/svg'%20viewBox='0%2... data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20404.64%2080.11'%3… — 200 — 0 B — 0 ms — datahttps://psifos-participa.uchile.cl/assets/background-DFJqvO03.jpg/assets/background-DFJqvO03.jpg https://psifos-participa.uchile.cl/assets/background-DFJqvO03.jpg — 200 — 2.5 MiB — 2.0 s — h2data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20512%20512'%3e%3c!…www.w3.org/2000/svg'%20viewBox='0%2... data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20512%20512'%3e%3c!… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20448%20512'%3e%3c!…www.w3.org/2000/svg'%20viewBox='0%2... data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20448%20512'%3e%3c!… — 200 — 0 B — 0 ms — datahttps://psifos-participa.uchile.cl/assets/Arial-DHXpgMHe.ttf/assets/Arial-DHXpgMHe.ttf https://psifos-participa.uchile.cl/assets/Arial-DHXpgMHe.ttf — 200 — 399.6 KiB — 429 ms — h2https://psifos-participa.uchile.cl/favicon.ico/favicon.ico https://psifos-participa.uchile.cl/favicon.ico — 200 — 4.8 KiB — 32 ms — h2https://psifos-participa.uchile.cl/logo192.png/logo192.png https://psifos-participa.uchile.cl/logo192.png — 200 — 5.3 KiB — 608 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
32% of JavaScript execution is third-party
First-party Third-party 397ms · 0KB · CL$2939/mo
Unattributable
Other
Costly
Execution 397ms
Transfer 0 KB
Monthly Cost CL$2939/mo

These scripts may cost more than they're worth

  • Unattributable adds 397ms and costs ~CL$2939/month

Unattributable takes 397ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)

LCP (p75)

2711 ms

69% good

INP (p75)

0 ms

0% good

CLS (p75)

0.580

41% good

FCP (p75)

2295 ms

TTFB (p75)

828 ms

Image Optimization
1 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

0 KB

1 missing dimensions
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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