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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
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.

2.48 s

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

8.48 s

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

276 ms

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

0.024

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

4.90 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.

13.47 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
8 PASS 4 REVIEW 3 FIX
D
Page Weight Budget
Action
2.4 MB transferred, 47 requests
FIX
2.4 MB transferred, 47 requests
Warning::
Page weighs 3.7 MB (2.4 MB transferred)
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Warning::
JavaScript is 568 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 568 KB
Info::
47 HTTP requests
Info::
Estimated 0.51 g CO2 per page load
2.4 MB / 2.4 MB budget
2.4 MB transferred
47 requests
0.51 g CO2 per page load
Images 1.7 MiB 70%
JavaScript 568.4 KiB 23%
Fonts 73.5 KiB 3%
CSS 67.0 KiB 3%
HTML 16.6 KiB 1%
Other 15.8 KiB 1%
Other 1.1 KiB 0%
Other 568 B 0%
Other 120 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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.4 MiB of 2.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
47 resources · 2.4 MB · 195 KB savings available
FIX
47 resources · 2.4 MB · 195 KB savings available
Warning::
Page weight 1.4 MB over 1MB target
Got: 2.4 MB Expected: ≤ 1 MB
Info::
~195 KB of savings available
Warning::
46 third-party resources (100% of weight)
Info::
3 resources over 200KB
47 resources · 2.4 MiB · 46 third-party 1.4 MiB over 1MB target
Image 71% · 1.7 MiB
JavaScript 23% · 568.4 KiB
Font 3% · 73.5 KiB
CSS 3% · 67.0 KiB
Document 1% · 16.8 KiB
Other 0% · 2.1 KiB

~195.5 KiB of savings available

Remove unused JavaScript: 195.5 KiB
C
Image Optimization
Action
14 images, 0 KB saveable
REVIEW
14 images, 0 KB saveable
Warning::
https://www.real.com/static/image/rp22/rpm_downloa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.real.com/static/image/rp22/desktop-dar... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.real.com/static/image/logo/real-gobaln... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.real.com/static/image/rp22/AI_Filter_e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
14 images 1.7 MB
0 oversized -0 KB
13 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
1508ms total JS execution
REVIEW
1508ms total JS execution
Warning::
https://www.real.com/es: 381ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-FXTD...: 283ms CPU time
Warning::
Unattributable: 270ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-107...: 253ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-NST...: 136ms CPU time
Warning::
Third-party scripts: 1508ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Other 20% Style & Layout 13% Script Parsing & Compilation 9% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.real.com/es381ms29ms7ms3rd
https://www.googletagmanager.com/gtag/js?id=G-FXTDBT9QN2&cx=c&_slc=1283ms236ms45ms3rd
Unattributable270ms7ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-1071683201253ms216ms34ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NSTXK2136ms108ms25ms3rd
https://www.real.com/static/app/realcom/lib/require.js122ms115ms2ms3rd
https://www.google-analytics.com/analytics.js63ms37ms16ms3rd
C
JS Bundles
Action
22 scripts, 195 KB unused
REVIEW
22 scripts, 195 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-FXTD...: 72 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NST...: 63 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-107...: 60 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 195 KB
195 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-FXTDBT9QN2&cx=c&_slc=1178 KB72 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NSTXK2124 KB63 KB (51%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-1071683201145 KB60 KB (41%)✓3rd
https://www.real.com/static/app/realcom/common/watch-tour-da7fcd375aa14e57e7346ae4a11fe13e.js1 KB—✓3rd
https://www.real.com/static/app/realcom/lib/jquery.i18n.js1 KB—✓3rd
https://www.real.com/static/app/i18n/message_es_ES-8533a3f8604324eb34760834ec60a1d9.js2 KB—✓3rd
https://www.real.com/static/app/realcom/common/ht-common-c274060bb5cdbe4e1819cdb2ea989fe6.js1 KB—✓3rd
https://www.real.com/static/app/realcom/lib/picturefill.min.js5 KB—✓3rd
https://www.real.com/static/app/realcom/lib/jquery.smartbanner-bb15c53fc30946389ed1a1d14e56a640.js3 KB—✓3rd
https://www.real.com/static/app/realcom/lib/matchHeight.min.js1 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

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
1 fonts (73 KB)
PASS
1 fonts (73 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

73 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 8.0 s FCP 2.5 s LCP 8.5 shttps://www.real.com/static/font/RedHatDisplay-Regular-e4690c0771f951cf1a0efa6ab8d01ec1.ttfRedHatDisplay-Regular-e... https://www.real.com/static/font/RedHatDisplay-Regular-e4690c0771f951cf1a0efa6ab8d01ec1.ttf — 73.5 KiB — 226 ms — font-display: swap
RedHatDisplay-Regular-e... ttf swap
Size 73 KB
Load time 226 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
  • 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 ~22 KB and ~44 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
6 hints, 0 missing preconnects
PASS
6 hints, 0 missing preconnects
Info::
Page uses 6 resource hint(s)

Current Resource Hints

preconnect
3
preload
2
dns-prefetch
1
prefetch
—

6 resource hints configured

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
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
47 requests over 2948ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 2.5 s LCP 8.5 shttps://real.com// https://real.com/ — 301 — 184 B — 466 ms — h2https://www.real.com/www.real.com/ https://www.real.com/ — 302 — 386 B — 403 ms — h2https://www.real.com/eswww.real.com/es https://www.real.com/es — 200 — 16.6 KiB — 168 ms — h2https://www.real.com/static/css/rp25/common-53fc5a1f47253ab830926ea1715b898c.csswww.real.com/static/css/rp25/common... https://www.real.com/static/css/rp25/common-53fc5a1f47253ab830926ea1715b898c.css — 200 — 67.0 KiB — 480 ms — h2https://www.real.com/static/app/realcom/lib/require.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/require.js — 200 — 8.0 KiB — 316 ms — h2https://www.real.com/static/image/spacer-60b2f914842e8b09024754e8a6493b36.pngwww.real.com/static/image/spacer-60... https://www.real.com/static/image/spacer-60b2f914842e8b09024754e8a6493b36.png — 200 — 316 B — 163 ms — h2https://www.real.com/static/image/rp22/phone_tilted_ES-192d577e7e803a8dac8b30958c8efaaf.pngwww.real.com/static/image/rp22/phon... https://www.real.com/static/image/rp22/phone_tilted_ES-192d577e7e803a8dac8b30958c8efaaf.png — 200 — 784.1 KiB — 621 ms — h2https://www.real.com/static/image/rp25/RP_Downloader_nub_ES-3e075d5bf351101fb6667e74ef09c69d.pngwww.real.com/static/image/rp25/RP_D... https://www.real.com/static/image/rp25/RP_Downloader_nub_ES-3e075d5bf351101fb6667e74ef09c69d.png — 200 — 75.6 KiB — 451 ms — h2https://www.real.com/static/image/rp22/rpm_download_logos_ES-6d583cb78bd15cbf4566b8c3179c73fb.pngwww.real.com/static/image/rp22/rpm_... https://www.real.com/static/image/rp22/rpm_download_logos_ES-6d583cb78bd15cbf4566b8c3179c73fb.png — 200 — 23.9 KiB — 164 ms — h2https://www.real.com/static/image/rp22/desktop-dark-videos_ES-562c71635d686539b6838edc02c02a25.pngwww.real.com/static/image/rp22/desk... https://www.real.com/static/image/rp22/desktop-dark-videos_ES-562c71635d686539b6838edc02c02a25.png — 200 — 29.5 KiB — 167 ms — h2https://www.real.com/static/image/mobile/app_store_es-d9457d7e021d8564cbec079f5cf6d222.svgwww.real.com/static/image/mobile/ap... https://www.real.com/static/image/mobile/app_store_es-d9457d7e021d8564cbec079f5cf6d222.svg — 200 — 7.8 KiB — 166 ms — h2https://www.googletagmanager.com/gtag/js?id=AW-1071683201www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=AW-1071683201 — 200 — 144.9 KiB — 158 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASAAAAc7CAYAAAAeQmniAAAgAElEQVR4nOzde5wcVZ03/hMTJKywA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASAAAAc7CAYAAAAeQmniAAAgAElEQVR4nOzde5wcVZ03/hMTJKywA… — 200 — 0 B — 1 ms — datahttps://www.real.com/static/image/rp25/home_hero_bg-48ef9cd5cb0c7882aa92bf50254395e4.pngwww.real.com/static/image/rp25/home... https://www.real.com/static/image/rp25/home_hero_bg-48ef9cd5cb0c7882aa92bf50254395e4.png — 200 — 70.5 KiB — 163 ms — h2https://www.real.com/static/font/RedHatDisplay-Regular-e4690c0771f951cf1a0efa6ab8d01ec1.ttfwww.real.com/static/font/RedHatDisp... https://www.real.com/static/font/RedHatDisplay-Regular-e4690c0771f951cf1a0efa6ab8d01ec1.ttf — 200 — 73.5 KiB — 226 ms — h2https://www.real.com/static/image/rp25/home_hero_image_ES-6af1e9233f70d13b6b9ae80a24cba734.pngwww.real.com/static/image/rp25/home... https://www.real.com/static/image/rp25/home_hero_image_ES-6af1e9233f70d13b6b9ae80a24cba734.png — 200 — 556.0 KiB — 180 ms — h2https://www.real.com/static/image/logo/real-gobalnav-tablet-real_logo@2x-322c5b2b25285937655f9698f8798899.pngwww.real.com/static/image/logo/real... https://www.real.com/static/image/logo/real-gobalnav-tablet-real_logo@2x-322c5b2b25285937655f9698f8798899.png — 200 — 2.8 KiB — 162 ms — h2https://www.real.com/static/image/rp22/download_solid-ddbbaf2ccb63e13b0190035d65d43b33.svgwww.real.com/static/image/rp22/down... https://www.real.com/static/image/rp22/download_solid-ddbbaf2ccb63e13b0190035d65d43b33.svg — 200 — 1.1 KiB — 164 ms — h2https://www.real.com/static/image/rp22/AI_Filter_es-0f11ebbdfef0581f4a1fefb4e5743666.pngwww.real.com/static/image/rp22/AI_F... https://www.real.com/static/image/rp22/AI_Filter_es-0f11ebbdfef0581f4a1fefb4e5743666.png — 200 — 204.7 KiB — 171 ms — h2https://www.real.com/static/app/realcom/lib/jquery.min.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/jquery.min.js — 200 — 29.4 KiB — 169 ms — h2https://www.google.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fwww.real.com%2Fes&scrsrc=www.googletagmanager.com&rnd=218781470.1776810063&dt=Home%20to%20the%20video%20player%20and%20downloader%2C%20RealPlayer%20from%20RealNetworks&auid=800278699.1776810063&navt=n&npa=1&gtm=45be64h1v9212863670za200zd9212863670xec&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115938465~115938468~117266400&apve=1&apvf=f&apvc=1&tids=AW-1071683201&tid=AW-1071683201&tft=1776810062920&tfd=1769www.google.com/ccm/collect?rcb=5&fr... https://www.google.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fwww.real.com%2Fes&scrsrc=www.googletagmanager.com&rnd=218781470.1776810063&dt=Home%20to%20the%20video%20player%20and%20downloader%2C%20RealPlayer%20from%20RealNetworks&auid=800278699.1776810063&navt=n&npa=1&gtm=45be64h1v9212863670za200zd9212863670xec&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115938465~115938468~117266400&apve=1&apvf=f&apvc=1&tids=AW-1071683201&tid=AW-1071683201&tft=1776810062920&tfd=1769 — 200 — 21 B — 64 ms — h3https://www.real.com/static/app/realcom/lib/modernizr.custom.min.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/modernizr.custom.min.js — 200 — 4.8 KiB — 162 ms — h2https://www.real.com/static/app/realcom/main-min-b2653c06c5c5664ac3f548469763aaf4.jswww.real.com/static/app/realcom/mai... https://www.real.com/static/app/realcom/main-min-b2653c06c5c5664ac3f548469763aaf4.js — 200 — 990 B — 162 ms — h2https://www.real.com/static/app/i18n/message_es_ES-8533a3f8604324eb34760834ec60a1d9.jswww.real.com/static/app/i18n/messag... https://www.real.com/static/app/i18n/message_es_ES-8533a3f8604324eb34760834ec60a1d9.js — 200 — 1.9 KiB — 162 ms — h2https://www.real.com/static/app/realcom/common/ht-common-c274060bb5cdbe4e1819cdb2ea989fe6.jswww.real.com/static/app/realcom/com... https://www.real.com/static/app/realcom/common/ht-common-c274060bb5cdbe4e1819cdb2ea989fe6.js — 200 — 1.3 KiB — 161 ms — h2https://www.real.com/static/app/realcom/lib/picturefill.min.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/picturefill.min.js — 200 — 5.2 KiB — 162 ms — h2https://www.real.com/static/app/realcom/lib/jquery.smartbanner-bb15c53fc30946389ed1a1d14e56a640.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/jquery.smartbanner-bb15c53fc30946389ed1a1d14e56a640.js — 200 — 3.0 KiB — 162 ms — h2https://www.real.com/static/image/mobile/checkmark-yellow-e123ee437fa37af1a5b45f4971a8118e.pngwww.real.com/static/image/mobile/ch... https://www.real.com/static/image/mobile/checkmark-yellow-e123ee437fa37af1a5b45f4971a8118e.png — 200 — 673 B — 164 ms — h2https://www.real.com/static/app/realcom/lib/matchHeight.min.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/matchHeight.min.js — 200 — 1.3 KiB — 161 ms — h2https://www.real.com/static/app/realcom/common/watch-tour-da7fcd375aa14e57e7346ae4a11fe13e.jswww.real.com/static/app/realcom/com... https://www.real.com/static/app/realcom/common/watch-tour-da7fcd375aa14e57e7346ae4a11fe13e.js — 200 — 828 B — 163 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 2.5 s LCP 8.5 shttps://real.com// https://real.com/ — 301 — 184 B — 466 ms — h2https://www.real.com/www.real.com/ https://www.real.com/ — 302 — 386 B — 403 ms — h2https://www.real.com/eswww.real.com/es https://www.real.com/es — 200 — 16.6 KiB — 168 ms — h2https://www.real.com/static/css/rp25/common-53fc5a1f47253ab830926ea1715b898c.csswww.real.com/static/css/rp25/common... https://www.real.com/static/css/rp25/common-53fc5a1f47253ab830926ea1715b898c.css — 200 — 67.0 KiB — 480 ms — h2https://www.real.com/static/app/realcom/lib/require.jswww.real.com/static/app/realcom/lib... https://www.real.com/static/app/realcom/lib/require.js — 200 — 8.0 KiB — 316 ms — h2https://www.real.com/static/image/spacer-60b2f914842e8b09024754e8a6493b36.pngwww.real.com/static/image/spacer-60... https://www.real.com/static/image/spacer-60b2f914842e8b09024754e8a6493b36.png — 200 — 316 B — 163 ms — h2https://www.real.com/static/image/rp22/phone_tilted_ES-192d577e7e803a8dac8b30958c8efaaf.pngwww.real.com/static/image/rp22/phon... https://www.real.com/static/image/rp22/phone_tilted_ES-192d577e7e803a8dac8b30958c8efaaf.png — 200 — 784.1 KiB — 621 ms — h2https://www.real.com/static/image/rp25/RP_Downloader_nub_ES-3e075d5bf351101fb6667e74ef09c69d.pngwww.real.com/static/image/rp25/RP_D... https://www.real.com/static/image/rp25/RP_Downloader_nub_ES-3e075d5bf351101fb6667e74ef09c69d.png — 200 — 75.6 KiB — 451 ms — h2https://www.real.com/static/image/rp22/rpm_download_logos_ES-6d583cb78bd15cbf4566b8c3179c73fb.pngwww.real.com/static/image/rp22/rpm_... https://www.real.com/static/image/rp22/rpm_download_logos_ES-6d583cb78bd15cbf4566b8c3179c73fb.png — 200 — 23.9 KiB — 164 ms — h2https://www.real.com/static/image/rp22/desktop-dark-videos_ES-562c71635d686539b6838edc02c02a25.pngwww.real.com/static/image/rp22/desk... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1508ms · 492KB · €8/mo
www.real.com
Other
Costly
Execution 381ms
Transfer 17 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 283ms
Transfer 178 KB
Unused 41%
Monthly Cost €2/mo
Unattributable
Other
Costly
Execution 270ms
Transfer 0 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 253ms
Transfer 145 KB
Unused 41%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 136ms
Transfer 124 KB
Unused 51%
Monthly Cost €1/mo
www.real.com
Other
Optional
Execution 122ms
Transfer 8 KB
Monthly Cost €1/mo
Google Analytics
Analytics
Optional
Execution 63ms
Transfer 21 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • www.real.com adds 381ms and costs ~€2/month
  • Google Tag Manager adds 283ms and costs ~€2/month
  • Unattributable adds 270ms and costs ~€1/month
  • Google Tag Manager adds 253ms and costs ~€1/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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.real.com takes 381ms 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

Google Tag Manager takes 283ms 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 270ms 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

Google Tag Manager 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

51% of Google Tag Manager'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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