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https://yumpu.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
4
REVIEW
4
PASS
7
INFO
2

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

Mobile Desktop
55
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
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.

18.45 s

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

18.88 s

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

0 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.

18.45 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.

18.88 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
7 PASS 4 REVIEW 4 FIX
F
Page Weight Budget
Action
3.7 MB transferred, 83 requests
FIX
3.7 MB transferred, 83 requests
Warning::
Page weighs 8.3 MB (3.7 MB transferred)
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
Info::
Fonts are 1.3 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.3 MB
Info::
83 HTTP requests
Info::
Estimated 0.78 g CO2 per page load
3.7 MB / 2.4 MB budget
3.7 MB transferred
83 requests
0.78 g CO2 per page load
JavaScript 1.4 MiB 37%
Fonts 1.3 MiB 36%
Images 811.4 KiB 21%
CSS 174.2 KiB 5%
HTML 48.9 KiB 1%
Other 12.1 KiB 0%
Other 2.7 KiB 0%
Other 2.4 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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 (3.7 MiB of 3.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2991ms total JS execution
FIX
2991ms total JS execution
Warning::
Unattributable: 647ms CPU time
Warning::
https://www.yumpu.com/en: 621ms CPU time
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co...: 612ms CPU time
Warning::
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v...: 383ms CPU time
Warning::
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v...: 292ms CPU time
Warning::
Third-party scripts: 2991ms (100% of total)

Main Thread Breakdown

Script Evaluation 32% Other 25% Style & Layout 20% Script Parsing & Compilation 14% Parse HTML & CSS 9%
ScriptTotalScriptingParse/CompileParty
Unattributable647ms8ms0ms3rd
https://www.yumpu.com/en621ms241ms17ms3rd
https://assets.yumpu.com/landingpages/prd/yumpu.com/assets/scripts/npm/swiper@8/swiper-bundle.min.js612ms98ms19ms3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/fontawesome/light.min.js?v=245383ms38ms333ms3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/n8n/chat.bundle.es.min.js292ms275ms5ms3rd
https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js200ms162ms13ms3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/jquery/jquery-3.3.1.min.js?v=245175ms89ms14ms3rd
https://cdn.privacy-mgmt.com/unified/4.40.1/gdpr-tcf.27718c8cb9d29947d2c1.bundle.js60ms44ms16ms3rd
D
Page Weight Inventory
Action
83 resources · 3.7 MB · 131 KB savings available
FIX
83 resources · 3.7 MB · 131 KB savings available
Warning::
Page weight 2.7 MB over 1MB target
Got: 3.7 MB Expected: ≤ 1 MB
Info::
~131 KB of savings available
Warning::
82 third-party resources (100% of weight)
Info::
5 resources over 200KB
83 resources · 3.7 MiB · 82 third-party 2.7 MiB over 1MB target
JavaScript 37% · 1.4 MiB
Font 36% · 1.3 MiB
Image 21% · 813.0 KiB
CSS 5% · 174.2 KiB
Document 1% · 49.8 KiB
Other 0% · 14.2 KiB

~131.0 KiB of savings available

Remove unused JavaScript: 131.0 KiB
C
Image Optimization
Action
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
37 images 811 KB
0 oversized -0 KB
36 legacy format
28 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

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

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

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

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

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

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

B
JS Bundles
14 scripts, 131 KB unused
REVIEW
14 scripts, 131 KB unused
Warning::
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v...: 110 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.yumpu.com/landingpages/prd/yumpu.co...: 21 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 131 KB
131 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/n8n/chat.bundle.es.min.js241 KB110 KB (46%)✓3rd
https://assets.yumpu.com/landingpages/prd/yumpu.com/assets/scripts/npm/swiper@8/swiper-bundle.min.js40 KB21 KB (54%)✓3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/jquery/jquery-3.3.1.min.js?v=24530 KB—✓3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/fontawesome/light.min.js?v=245913 KB—✓3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/bootstrap-select/bootstrap.bundle.min.js?v=24521 KB—✓3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/jqcloud/jqcloud.min.js?v=2453 KB—✓3rd
https://assets.yumpu.com/release/j72juZnTEi/v4/js/modules/tracking/tracking.js3 KB—✓3rd
https://assets.yumpu.com/release/j72juZnTEi/v4/js/modules/tracking/internal_tracking.js?v=2451 KB—✓3rd
https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js42 KB—✓3rd
https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/js/plugins/fontawesome/fontawesome.min.js?v=2450 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

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

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
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
9 fonts (1365 KB)
PASS
9 fonts (1365 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

1365 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s FCP 18.5 s LCP 18.9 shttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/fa-light-300.woff2fa-light-300.woff2 https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/fa-light-300.woff2 — 450.7 KiB — 81 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/fa-solid-900.woff2 — 343.2 KiB — 98 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-700.woff2inter-v8-vietnamese_lat... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-700.woff2 — 104.2 KiB — 86 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2inter-v8-vietnamese_lat... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2 — 97.1 KiB — 120 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/open-sans-v28-vietnamese_latin-ext_latin_hebrew_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2open-sans-v28-vietnames... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/open-sans-v28-vietnamese_latin-ext_latin_hebrew_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2 — 55.5 KiB — 71 ms — font-display: swapdata:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA…font-woff;charset=utf-8... data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA… — 1.6 KiB — 38 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-800.woff2inter-v8-vietnamese_lat... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-800.woff2 — 104.2 KiB — 48 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-500.woff2inter-v8-vietnamese_lat... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-500.woff2 — 104.0 KiB — 31 ms — font-display: swaphttps://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-600.woff2inter-v8-vietnamese_lat... https://assets.yumpu.com/release/dCPv4iwI6Upv0ya/v5/css/plugins/webfonts/inter-v8-vietnamese_latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-600.woff2 — 103.9 KiB — 30 ms — font-display: swap
fa-light-300.woff2 woff2 swap
Size 451 KB
Load time 81 ms
Start 880 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-solid-900.woff2 woff2 swap
Size 343 KB
Load time 98 ms
Start 880 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-v8-vietnamese_lat... woff2 swap
Size 104 KB
Load time 86 ms
Start 880 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-v8-vietnamese_lat... woff2 swap
Size 97 KB
Load time 120 ms
Start 880 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v28-vietnames... woff2 swap
Size 56 KB
Load time 71 ms
Start 922 ms
Risk FOUT — text flashes from fallback to web font
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 38 ms
Start 943 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
inter-v8-vietnamese_lat... woff2 swap
Size 104 KB
Load time 48 ms
Start 955 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-v8-vietnamese_lat... woff2 swap
Size 104 KB
Load time 31 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-v8-vietnamese_lat... woff2 swap
Size 104 KB
Load time 30 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • 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 ~606 KB and ~1212 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+
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
Network Waterfall
83 requests over 1637ms
INFO
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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 2991ms · 1338KB · €32/mo
Unattributable
Other
Costly
Execution 647ms
Transfer 0 KB
Monthly Cost €7/mo
www.yumpu.com
Other
Costly
Execution 621ms
Transfer 47 KB
Monthly Cost €7/mo
assets.yumpu.com
Other
Costly
Execution 612ms
Transfer 40 KB
Unused 54%
Monthly Cost €7/mo
assets.yumpu.com
Other
Costly
Execution 383ms
Transfer 913 KB
Monthly Cost €4/mo
assets.yumpu.com
Other
Costly
Execution 292ms
Transfer 241 KB
Unused 46%
Monthly Cost €3/mo
cdn.privacy-mgmt.com
Other
Costly
Execution 200ms
Transfer 42 KB
Monthly Cost €2/mo
assets.yumpu.com
Other
Optional
Execution 175ms
Transfer 30 KB
Monthly Cost €2/mo
cdn.privacy-mgmt.com
Other
Optional
Execution 60ms
Transfer 25 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 647ms and costs ~€7/month
  • www.yumpu.com adds 621ms and costs ~€7/month
  • assets.yumpu.com adds 612ms and costs ~€7/month
  • assets.yumpu.com adds 383ms and costs ~€4/month
  • assets.yumpu.com adds 292ms and costs ~€3/month
  • cdn.privacy-mgmt.com adds 200ms and costs ~€2/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.

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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

Unattributable takes 647ms 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

www.yumpu.com takes 621ms 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

assets.yumpu.com takes 612ms 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

54% of assets.yumpu.com'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

assets.yumpu.com takes 383ms 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

assets.yumpu.com takes 292ms 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

cdn.privacy-mgmt.com takes 200ms 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

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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