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https://unam.mx

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
2
REVIEW
5
PASS
6
INFO
2

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

Mobile Desktop
62
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

996 ms

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

3.31 s

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

70 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.326

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.66 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.

3.34 s

Page Load Progression

636 ms
1.3 s
1.9 s
2.5 s
3.2 s
3.8 s
4.5 s
5.1 s
Checks
15
6 PASS 5 REVIEW 2 FIX
F
Page Weight Budget
Action
3.9 MB transferred, 104 requests
FIX
3.9 MB transferred, 104 requests
Warning::
Page weighs 8.2 MB (3.9 MB transferred)
Warning::
Images are 2.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.1 MB
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Warning::
104 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.82 g CO2 per page load
3.9 MB / 2.4 MB budget
3.9 MB transferred
104 requests
0.82 g CO2 per page load
Images 2.1 MiB 54%
JavaScript 1.4 MiB 36%
HTML 181.8 KiB 5%
CSS 146.0 KiB 4%
Fonts 68.6 KiB 2%
Other 10.0 KiB 0%
Other 1.5 KiB 0%
Other 1.1 KiB 0%
Other 0 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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Page Weight Inventory
Action
104 resources · 3.9 MB · 254 KB savings available
FIX
104 resources · 3.9 MB · 254 KB savings available
Warning::
Page weight 2.9 MB over 1MB target
Got: 3.9 MB Expected: ≤ 1 MB
Info::
~254 KB of savings available
Warning::
52 third-party resources (45% of weight)
Info::
3 resources over 200KB
104 resources · 3.9 MiB · 52 third-party 2.9 MiB over 1MB target
Image 54% · 2.1 MiB
JavaScript 36% · 1.4 MiB
Document 5% · 181.9 KiB
CSS 4% · 146.0 KiB
Font 2% · 68.6 KiB
Other 0% · 11.9 KiB

~253.7 KiB of savings available

Remove unused JavaScript: 253.7 KiB
B
Third-Party Impact
45% third-party, 0 ms blocking
REVIEW
45% third-party, 0 ms blocking
Info::
Third-party code accounts for 45% of page weight (1.7 MiB of 3.9 MiB)
Info::
Third-party blocking time is low (0 ms)
55%
45%
First-party Third-party
C
Image Optimization
Action
47 images, 0 KB saveable
REVIEW
47 images, 0 KB saveable
Warning::
https://www.unam.mx/sites/default/files/images/soc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unam.mx/sites/default/files/images/soc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unam.mx/sites/default/files/images/soc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.unam.mx/sites/all/themes/unam/logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
47 images 2.1 MB
0 oversized -0 KB
12 legacy format
4 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Execution Cost
Action
1447ms total JS execution
REVIEW
1447ms total JS execution
Warning::
https://www.unam.mx/: 475ms CPU time
Warning::
https://ajax.googleapis.com/ajax/libs/jquery/1.8.3...: 253ms CPU time
Info::
Unattributable: 245ms CPU time
Info::
https://www.unam.mx/cdn-cgi/challenge-platform/scr...: 135ms CPU time
Info::
https://platform.twitter.com/widgets.js: 107ms CPU time
Warning::
Third-party scripts: 836ms (58% of total)

Main Thread Breakdown

Script Evaluation 45% Other 28% Style & Layout 12% Script Parsing & Compilation 7% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://www.unam.mx/475ms20ms2ms1st
https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js253ms195ms6ms3rd
Unattributable245ms36ms0ms3rd
https://www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js135ms130ms1ms1st
https://platform.twitter.com/widgets.js107ms73ms11ms3rd
https://www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1106ms85ms20ms3rd
https://connect.facebook.net/es_LA/bundle/sdk.js/71ms51ms16ms3rd
https://cse.google.com/cse.js?cx=000862918480106004188:wi2hxgsc9de55ms43ms0ms3rd
C
JS Bundles
Action
25 scripts, 254 KB unused
REVIEW
25 scripts, 254 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-R800...: 67 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.google.com/cse/static/element/dc329f57...: 53 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://ajax.googleapis.com/ajax/libs/jqueryui/1.1...: 52 KB unused (88%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/es_LA/bundle/sdk.js/: 51 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 254 KB
254 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1160 KB67 KB (42%)✓3rd
https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__es.js?usqp=CAM%3D103 KB53 KB (51%)✓3rd
https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js59 KB52 KB (88%)✓3rd
https://connect.facebook.net/es_LA/bundle/sdk.js/78 KB51 KB (66%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://www.unam.mx/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNIliTDdxenDPsUI.js19 KB—✗1st
https://www.unam.mx/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?12 KB—✓1st
https://platform.twitter.com/widgets.js27 KB—✓3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB—✓3rd
https://www.google-analytics.com/analytics.js21 KB—✓3rd

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

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

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

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

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
Font Loading
2 fonts (69 KB)
PASS
2 fonts (69 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

69 KB total

Render-blocking

0

of 2

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 FCP 996 ms LCP 3.3 shttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 49 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazTgWw.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazTgWw.woff2 — 34.7 KiB — 19 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 49 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 35 KB
Load time 19 ms
Start 2.3 s
Risk FOUT — text flashes from fallback to web font
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 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+
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: public, max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
Last-Modified header present
Cache-Control

public, max-age=3600

DirectiveValueMeaning
public—Any cache may store this response
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
104 requests over 5023ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 996 ms LCP 3.3 shttps://www.unam.mx// https://www.unam.mx/ — 200 — 12.6 KiB — 846 ms — h3https://www.unam.mx/cdn-cgi/speculation/cdn-cgi/speculation https://www.unam.mx/cdn-cgi/speculation — 200 — 284 B — 15 ms — h3https://www.unam.mx/sites/default/files/css/css_lQaZfjVpwP_oGNqdtWCSpJT1EMqXdMiU84ekLLxQnc4.css/sites/default/files/css/css_lQaZfj... https://www.unam.mx/sites/default/files/css/css_lQaZfjVpwP_oGNqdtWCSpJT1EMqXdMiU84ekLLxQnc4.css — 200 — 1.3 KiB — 26 ms — h3https://www.unam.mx/sites/default/files/css/css_Q7R7Blo9EYqLDI5rIlO_T3uTFBjIXjLpcqMHjTvVdmg.css/sites/default/files/css/css_Q7R7Bl... https://www.unam.mx/sites/default/files/css/css_Q7R7Blo9EYqLDI5rIlO_T3uTFBjIXjLpcqMHjTvVdmg.css — 200 — 2.9 KiB — 30 ms — h3https://www.unam.mx/sites/default/files/css/css_dWBHPbSQWh-19e3Bc29cTHIsefj--RoEVftmVdOAMn4.css/sites/default/files/css/css_dWBHPb... https://www.unam.mx/sites/default/files/css/css_dWBHPbSQWh-19e3Bc29cTHIsefj--RoEVftmVdOAMn4.css — 200 — 2.6 KiB — 35 ms — h3https://www.unam.mx/sites/default/files/css/css_JLCP4n47Z8AISwIm1s1TnuIbTc65IkfQsjfJ5oINFyo.css/sites/default/files/css/css_JLCP4n... https://www.unam.mx/sites/default/files/css/css_JLCP4n47Z8AISwIm1s1TnuIbTc65IkfQsjfJ5oINFyo.css — 200 — 8.5 KiB — 31 ms — h3https://www.unam.mx/sites/default/files/css/css_uc1RcvZeZUNveo7aHETNpsDro7gPbqp5Tzst0CqeGDQ.css/sites/default/files/css/css_uc1Rcv... https://www.unam.mx/sites/default/files/css/css_uc1RcvZeZUNveo7aHETNpsDro7gPbqp5Tzst0CqeGDQ.css — 200 — 15.2 KiB — 39 ms — h3https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js — 200 — 33.4 KiB — 72 ms — h2https://www.unam.mx/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxUwAK9i6D0YSDNs.js/sites/default/files/js/js_dWhBODsw... https://www.unam.mx/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxUwAK9i6D0YSDNs.js — 200 — 8.9 KiB — 52 ms — h3https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js — 200 — 59.3 KiB — 76 ms — h2https://www.unam.mx/sites/default/files/js/js_o0NmOA6FrOQamIKXP181IN2QejpF72PVBGsbUlh8LeY.js/sites/default/files/js/js_o0NmOA6F... https://www.unam.mx/sites/default/files/js/js_o0NmOA6FrOQamIKXP181IN2QejpF72PVBGsbUlh8LeY.js — 200 — 1.1 KiB — 53 ms — h3https://www.unam.mx/sites/default/files/js/js_xVdESRffMtg-VD1YEgI9Mt1hde2nAMJ-UvxnP-vdHvQ.js/sites/default/files/js/js_xVdESRff... https://www.unam.mx/sites/default/files/js/js_xVdESRffMtg-VD1YEgI9Mt1hde2nAMJ-UvxnP-vdHvQ.js — 200 — 6.7 KiB — 51 ms — h3https://www.unam.mx/sites/default/files/js/js_SpbJAG1Bu1guk20fiA-z1XncJHF44Bldqcs7iAh1XLM.js/sites/default/files/js/js_SpbJAG1B... https://www.unam.mx/sites/default/files/js/js_SpbJAG1Bu1guk20fiA-z1XncJHF44Bldqcs7iAh1XLM.js — 200 — 3.8 KiB — 52 ms — h3https://www.unam.mx/sites/all/themes/unam/logo.png/sites/all/themes/unam/logo.png https://www.unam.mx/sites/all/themes/unam/logo.png — 200 — 6.2 KiB — 66 ms — h3https://www.unam.mx/sites/default/files/images/carrusel/260420-portada-gaceta-unam-web.jpg/sites/default/files/images/carruse... https://www.unam.mx/sites/default/files/images/carrusel/260420-portada-gaceta-unam-web.jpg — 200 — 129.8 KiB — 72 ms — h3https://www.unam.mx/sites/default/files/images/carrusel/banner-8m-2026.jpg/sites/default/files/images/carruse... https://www.unam.mx/sites/default/files/images/carrusel/banner-8m-2026.jpg — 200 — 48.9 KiB — 21 ms — h3https://www.unam.mx/sites/default/files/images/carrusel/banneranimado-ok.gif/sites/default/files/images/carruse... https://www.unam.mx/sites/default/files/images/carrusel/banneranimado-ok.gif — 200 — 1.3 MiB — 195 ms — h3https://www.unam.mx/sites/default/files/images/carrusel/banner-1960x600-becas-ok.jpg.jpeg/sites/default/files/images/carruse... https://www.unam.mx/sites/default/files/images/carrusel/banner-1960x600-becas-ok.jpg.jpeg — 200 — 128.0 KiB — 28 ms — h3https://www.unam.mx/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNIliTDdxenDPsUI.js/sites/default/files/js/js_rR1UpFcx... https://www.unam.mx/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNIliTDdxenDPsUI.js — 200 — 18.9 KiB — 215 ms — h3https://www.unam.mx/sites/default/files/images/carrusel/500-historias-1960x600.jpg/sites/default/files/images/carruse... https://www.unam.mx/sites/default/files/images/carrusel/500-historias-1960x600.jpg — 200 — 111.2 KiB — 117 ms — h3https://www.unam.mx/sites/default/files/images/boletines/2351.jpg/sites/default/files/images/boletin... https://www.unam.mx/sites/default/files/images/boletines/2351.jpg — 200 — 19.1 KiB — 101 ms — h3https://www.unam.mx/sites/default/files/images/boletines/2341.jpg/sites/default/files/images/boletin... https://www.unam.mx/sites/default/files/images/boletines/2341.jpg — 200 — 24.4 KiB — 112 ms — h3https://www.unam.mx/sites/default/files/images/eventos/informe2025.jpg/sites/default/files/images/eventos... https://www.unam.mx/sites/default/files/images/eventos/informe2025.jpg — 200 — 15.8 KiB — 98 ms — h3https://www.unam.mx/sites/default/files/images/eventos/pt-2026.jpg/sites/default/files/images/eventos... https://www.unam.mx/sites/default/files/images/eventos/pt-2026.jpg — 200 — 21.0 KiB — 108 ms — h3https://www.unam.mx/sites/default/files/images/eventos/300.gif/sites/default/files/images/eventos... https://www.unam.mx/sites/default/files/images/eventos/300.gif — 200 — 230.8 KiB — 130 ms — h3https://www.unam.mx/sites/default/files/images/gaceta/lunes_20_abril_2026_gaceta_unam_portal.jpg/sites/default/files/images/gaceta/... https://www.unam.mx/sites/default/files/images/gaceta/lunes_20_abril_2026_gaceta_unam_portal.jpg — 200 — 25.9 KiB — 108 ms — h3https://platform.twitter.com/widgets.jsplatform.twitter.com/widgets.js https://platform.twitter.com/widgets.js — 200 — 27.3 KiB — 98 ms — h2https://www.unam.mx/sites/default/files/images/campanias/llvr.jpg/sites/default/files/images/campani... https://www.unam.mx/sites/default/files/images/campanias/llvr.jpg — 200 — 10.8 KiB — 103 ms — h3https://www.unam.mx/sites/default/files/images/campanias/cigu-abajo.jpg/sites/default/files/images/campani... https://www.unam.mx/sites/default/files/images/campanias/cigu-abajo.jpg — 200 — 6.2 KiB — 188 ms — h3https://www.unam.mx/sites/default/files/images/campanias/ptu.jpg/sites/default/files/images/campani... https://www.unam.mx/sites/default/files/images/campanias/ptu.jpg — 200 — 8.1 KiB — 107 ms — h3
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h2https://www.facebook.com/v2.3/plugins/page.php?adapt_container_width=true&app_id=1590366144556274&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Dff5ff7bc8c2f12f77%26domain%3Dwww.unam.mx%26is_canvas%3Dfalse%26origin%3Dhttps%253A%252F%252Fwww.unam.mx%252Ff0f48c259ae57a518%26relation%3Dparent.parent&container_width=325&hide_cover=false&href=https%3A%2F%2Fwww.facebook.com%2FUNAM.MX.Oficial%2F&locale=es_LA&sdk=joey&show_facepile=true&small_header=false&tabs=timelinewww.facebook.com/v2.3/plugins/page.... https://www.facebook.com/v2.3/plugins/page.php?adapt_container_width=true&app_id=1590366144556274&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Dff5ff7bc8c2f12f77%26domain%3Dwww.unam.mx%26is_canvas%3Dfalse%26origin%3Dhttps%253A%252F%252Fwww.unam.mx%252Ff0f48c259ae57a518%26relation%3Dparent.parent&container_width=325&hide_cover=false&href=https%3A%2F%2Fwww.facebook.com%2FUNAM.MX.Oficial%2F&locale=es_LA&sdk=joey&show_facepile=true&small_header=false&tabs=timeline — 302 — 124 B — 178 ms — h3https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=m0uaqKz1SH2OrCFE/17D2w==&sde=1ep1.adtrafficquality.google/getconf... https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=m0uaqKz1SH2OrCFE/17D2w==&sde=1 — 200 — 8.0 KiB — 59 ms — h3https://www.unam.mx/cdn-cgi/rum?/cdn-cgi/rum? https://www.unam.mx/cdn-cgi/rum? — 204 — 194 B — 19 ms — 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— 429 — 480 B — 117 ms — h2https://ep2.adtrafficquality.google/sodar/sodar2.jsep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2.js — 200 — 7.9 KiB — 42 ms — h2https://i.ytimg.com/vi_webp/DStkZOFgcMU/sddefault.webpi.ytimg.com/vi_webp/DStkZOFgcMU/sdd... https://i.ytimg.com/vi_webp/DStkZOFgcMU/sddefault.webp — 200 — 37.7 KiB — 19 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazTgWw.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazTgWw.woff2 — 200 — 34.7 KiB — 19 ms — h3https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.htmlep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.html — 200 — 5.8 KiB — 42 ms — 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https://www.facebook.com/login/?next=https%3A%2F%2Fwww.facebook.com%2Fplugins%2Fpage.php%3Fadapt_container_width%3Dtrue%26app_id%3D1590366144556274%26channel%3Dhttps%253A%252F%252Fstaticxx.facebook.com%252Fx%252Fconnect%252Fxd_arbiter%252F%253Fversion%253D46%2523cb%253Dff5ff7bc8c2f12f77%2526domain%253Dwww.unam.mx%2526is_canvas%253Dfalse%2526origin%253Dhttps%25253A%25252F%25252Fwww.unam.mx%25252Ff0f48c259ae57a518%2526relation%253Dparent.parent%26container_width%3D325%26hide_cover%3Dfalse%26href%3Dhttps%253A%252F%252Fwww.facebook.com%252FUNAM.MX.Oficial%252F%26locale%3Des_LA%26sdk%3Djoey%26show_facepile%3Dtrue%26small_header%3Dfalse%26tabs%3Dtimeline — 400 — 119 B — 187 ms — h3https://www.google.com/js/th/rOmrN60AN-U9GRTHX8orPjMEIJ8wTXyJ5HZew_AwfbI.jswww.google.com/js/th/rOmrN60AN-U9GR... https://www.google.com/js/th/rOmrN60AN-U9GRTHX8orPjMEIJ8wTXyJ5HZew_AwfbI.js — 200 — 23.1 KiB — 24 ms — 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https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 312 B — 17 ms — h2https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=afs_1234567890&jk=m0uaqKz1SH2OrCFE%2F17D2w%3D%3D&bg=!hYalhuTNAAY2C5OeFgs7AEcBe5WfOOnHYWI0VqaC72bN8vSOdZ12PjKU5mMZ-X3YEmeJCrNTasyaeWxG7VNyjfb2H5oywCEpFob30VLK3284jp-N7ELRywIAAADzUgAAAAdoAQd-ABs25OxWWLnnID91ngeBCWn2zLQgi3Y9kcfT-J0KAH1aH_ZBOi6MSua47y6Rm5Qe1L9cKmPsl8Wnr7HdS-zMzcgSJOVgdt8P19lNHDqpz5J1J0RtMGBtqlTmBE35Ito3B_gYvvwCNqQ3ArSh8FkHFzsDQ_TpW5QR4I8hRUnicZu9uOkqOIUmOweXkWPXxj_0x87rgRVWtTwlxG26SpkB_kk0Oy5Fnsh73OjB9V1gZ3ScR11B4dRmaFQvzXKS4nwOUs7NrYEq5fLBiCYfjYzV6hUZjJ7yRq-14qOIJkjEbh9FYId3smX0HDSzhtRHssRUEJzgVFtOI_7GscUGpMSj0rLcd5hX1MF5yyehCYw6wwj6mM35UCRr68WOXwO0VNUQtBDC6fBH57vGcWDZDpYRy3HRSxoIZ94FdkAUepooIfSc64qDe4EQEmK2r-1glP2CXxh-rNOXK-2iJALTuPSq9NttbdU2bfj-BsNproieMqBNG3I7Ng_Pf7Dg04pqiwTFeHfn4U8KXpgrtl9R5s1ICBOYpHajXX7STAyYUbUaFdt6JZC7ODWDNVk1OvFRCMZR1pKQlCfAEYOGrPkhP6zlQIpVT-R4vTmPlibDvkkGA8pntiEkPYHajmuppj-aaxLnZBSP-11YA8k1efts_RiZoR9H8e1vJdPUvTqBKGIq9sNYyxYMikCXUS_obgTG0oxRwqQFG3h2zD-KTcJnXZfL9k8mBcTuHIJMFU2kuKgV-COocLm-GNu8WAf43tPY-FlkvTCnFMw2l7GoQHDfCdQJ89PmY1XB1CAuN9mag4qAqsK6wMwZbMyGNDALIEhcyHMqQ1nu1B_B2t14p-hRl2335x590lqD27TXD64u-OgfciItIPQ5MCldXnB7kG5EkQep1.adtrafficquality.google/pagead/... 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— 204 — 17 B — 26 ms — h3https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 12 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
58% of JavaScript execution is third-party
First-party Third-party 836ms · 302KB · MX$62/mo
ajax.googleapis.com
Other
Costly
Execution 253ms
Transfer 33 KB
Monthly Cost MX$19/mo
Unattributable
Other
Costly
Execution 245ms
Transfer 0 KB
Monthly Cost MX$18/mo
Twitter/X Embed
Social
Optional
Execution 107ms
Transfer 27 KB
Monthly Cost MX$8/mo
Google Tag Manager
Tag Manager
Optional
Execution 106ms
Transfer 160 KB
Unused 42%
Monthly Cost MX$8/mo
Facebook Pixel
Advertising
Optional
Execution 71ms
Transfer 78 KB
Unused 66%
Monthly Cost MX$5/mo
cse.google.com
Other
Optional
Execution 55ms
Transfer 3 KB
Monthly Cost MX$4/mo

These scripts may cost more than they're worth

  • ajax.googleapis.com adds 253ms and costs ~MX$19/month
  • Unattributable adds 245ms and costs ~MX$18/month

58% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

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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

ajax.googleapis.com takes 253ms 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

Unattributable takes 245ms 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

66% of Facebook Pixel's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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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