Skip to content
https://youdao.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
51
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
67
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
75
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.

2.29 s

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

2.59 s

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

10 ms

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

0.553

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

2.44 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.

2.78 s

Page Load Progression

634 ms
1.3 s
1.9 s
2.5 s
3.2 s
3.8 s
4.4 s
5.1 s
Checks
15
6 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
2.6 MB transferred, 63 requests
FIX
2.6 MB transferred, 63 requests
Warning::
Page weighs 4.5 MB (2.6 MB transferred)
Warning::
Images are 1.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.6 MB
Warning::
JavaScript is 669 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 669 KB
Info::
Fonts are 311 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 311 KB
Info::
63 HTTP requests
Info::
Estimated 0.55 g CO2 per page load
2.6 MB / 2.4 MB budget
2.6 MB transferred
63 requests
0.55 g CO2 per page load
Images 1.6 MiB 62%
JavaScript 669.3 KiB 25%
Fonts 310.5 KiB 11%
HTML 47.8 KiB 2%
CSS 4.9 KiB 0%
Other 4.5 KiB 0%
Other 1.7 KiB 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

D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (2.6 MiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
D
JS Bundles
Action
14 scripts, 311 KB unused
FIX
14 scripts, 311 KB unused
Warning::
https://shared.ydstatic.com/market/souti/web_dict/...: 249 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://shared.ydstatic.com/market/souti/web_dict/...: 38 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://shared.ydstatic.com/market/souti/web_dict/...: 24 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 311 KB
311 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/a37463c.js382 KB249 KB (65%)✓3rd
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/d123544.js98 KB38 KB (39%)✓3rd
https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.js39 KB24 KB (60%)✓3rd
https://shared.ydstatic.com/market/souti/web_dict/online/1.0.0/bury.js0 KB—✓3rd
https://shared.ydstatic.com/js/yadk/1.1.3.js4 KB—✓3rd
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/c2d2466.js2 KB—✓3rd
https://shared.ydstatic.com/dict/yd_products/online/1.1.2/dist/lib/yd-nav.js15 KB—✓3rd
https://shared.ydstatic.com/js/rlog/v1.js3 KB—✓3rd
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.js27 KB—✓3rd
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/1782785.js27 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

D
Page Weight Inventory
Action
63 resources · 2.6 MB · 311 KB savings available
FIX
63 resources · 2.6 MB · 311 KB savings available
Warning::
Page weight 1.6 MB over 1MB target
Got: 2.6 MB Expected: ≤ 1 MB
Info::
~311 KB of savings available
Warning::
62 third-party resources (98% of weight)
Info::
2 resources over 200KB
63 resources · 2.6 MiB · 62 third-party 1.6 MiB over 1MB target
Image 62% · 1.6 MiB
JavaScript 25% · 669.3 KiB
Font 11% · 310.5 KiB
Document 2% · 47.8 KiB
CSS 0% · 4.9 KiB
Other 0% · 4.5 KiB

~310.6 KiB of savings available

Remove unused JavaScript: 310.6 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::
ETag present — enables conditional (304) responses

No Cache-Control header

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

C
Image Optimization
Action
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Warning::
https://luna-dict-community.nosdn.127.net/db2266e7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ydlunacommon-cdn.nosdn.127.net/564134e3399... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ydlunacommon-cdn.nosdn.127.net/cb776e6995f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
37 images 1.6 MB
0 oversized -0 KB
34 legacy format
3 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

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+
JS Execution Cost
319ms total JS execution
PASS
319ms total JS execution
Info::
https://shared.ydstatic.com/market/souti/web_dict/...: 172ms CPU time
Info::
https://youdao.com/: 88ms CPU time
Info::
Unattributable: 59ms CPU time
Warning::
Third-party scripts: 231ms (72% of total)

Main Thread Breakdown

Script Evaluation 44% Other 22% Style & Layout 16% Script Parsing & Compilation 11% Parse HTML & CSS 3% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.js172ms142ms2ms3rd
https://youdao.com/88ms1ms0ms1st
Unattributable59ms1ms0ms3rd
A+
Font Loading
3 fonts (311 KB)
PASS
3 fonts (311 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

311 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.3 s LCP 2.6 shttps://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttff90ef9f73a4c3bb6c686731... https://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttf — 153.7 KiB — 12 ms — font-display: swaphttps://ydlunacommon-cdn.nosdn.127.net/95ea1806153ce395d1782b6f9e3bf1b9.ttf95ea1806153ce395d1782b6... https://ydlunacommon-cdn.nosdn.127.net/95ea1806153ce395d1782b6f9e3bf1b9.ttf — 155.2 KiB — 14 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 — 18 ms — font-display: swap
f90ef9f73a4c3bb6c686731... ttf swap
Size 154 KB
Load time 12 ms
Start 872 ms
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
95ea1806153ce395d1782b6... ttf swap
Size 155 KB
Load time 14 ms
Start 872 ms
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
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 18 ms
Start 2.4 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 ~248 KB and ~496 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
Network Waterfall
63 requests over 2799ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.3 s LCP 2.6 shttps://youdao.com// https://youdao.com/ — 200 — 47.8 KiB — 830 ms — http/1.1https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.cssshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.css — 200 — 4.9 KiB — 22 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/1.0.0/bury.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/1.0.0/bury.js — 200 — 351 B — 42 ms — h2https://shared.ydstatic.com/js/rlog/v1.jsshared.ydstatic.com/js/rlog/v1.js https://shared.ydstatic.com/js/rlog/v1.js — 200 — 2.9 KiB — 28 ms — h2https://shared.ydstatic.com/dict/yd_products/online/1.1.2/dist/lib/yd-nav.jsshared.ydstatic.com/dict/yd_product... https://shared.ydstatic.com/dict/yd_products/online/1.1.2/dist/lib/yd-nav.js — 200 — 15.3 KiB — 43 ms — h2https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.js — 200 — 39.4 KiB — 31 ms — h2https://shared.ydstatic.com/js/yadk/1.1.3.jsshared.ydstatic.com/js/yadk/1.1.3.j... https://shared.ydstatic.com/js/yadk/1.1.3.js — 200 — 4.0 KiB — 32 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/c2d2466.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/c2d2466.js — 200 — 1.6 KiB — 44 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/d123544.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/d123544.js — 200 — 97.7 KiB — 56 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/a37463c.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/a37463c.js — 200 — 382.4 KiB — 90 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.js — 200 — 27.1 KiB — 45 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/1782785.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/1782785.js — 200 — 27.5 KiB — 53 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/4c4c86e.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/4c4c86e.js — 200 — 7.8 KiB — 51 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/88b4b21.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/88b4b21.js — 200 — 17.7 KiB — 50 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/78e5a59.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/78e5a59.js — 200 — 24.3 KiB — 54 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/27211f1.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/27211f1.js — 200 — 21.1 KiB — 57 ms — h2https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=pageview&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818248947&_nref=&_nurl=https%3A%2F%2Fyoudao.com%2F&_nres=800x600&_nlmf=1776818248&_njve=0&_nchr=utf-8&_nfrg=rlogs.youdao.com/rlog.php?_npid=dic... https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=pageview&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818248947&_nref=&_nurl=https%3A%2F%2Fyoudao.com%2F&_nres=800x600&_nlmf=1776818248&_njve=0&_nchr=utf-8&_nfrg= — 200 — 165 B — 537 ms — h2https://ydlunacommon-cdn.nosdn.127.net/cb776e6995f1c703706cf8c4c39a7520.pngydlunacommon-cdn.nosdn.127.net/cb77... https://ydlunacommon-cdn.nosdn.127.net/cb776e6995f1c703706cf8c4c39a7520.png — 200 — 74.0 KiB — 13 ms — h2https://luna-dict-community.nosdn.127.net/db2266e756ded7094c5dcbeebd1e6a8b.pngluna-dict-community.nosdn.127.net/d... https://luna-dict-community.nosdn.127.net/db2266e756ded7094c5dcbeebd1e6a8b.png — 200 — 4.7 KiB — 1.8 s — h2https://ydlunacommon-cdn.nosdn.127.net/d4420720818e84a2cefb493dc0315992.pngydlunacommon-cdn.nosdn.127.net/d442... https://ydlunacommon-cdn.nosdn.127.net/d4420720818e84a2cefb493dc0315992.png — 200 — 15.8 KiB — 12 ms — h2https://luna-dict-community.nosdn.127.net/ae3b4b07a09823bf38d7bb815c6ea139.pngluna-dict-community.nosdn.127.net/a... https://luna-dict-community.nosdn.127.net/ae3b4b07a09823bf38d7bb815c6ea139.png — 200 — 1.9 KiB — 1.8 s — h2https://luna-dict-community.nosdn.127.net/64e63d8a45a00599d8f4eb67b70f6883.pngluna-dict-community.nosdn.127.net/6... https://luna-dict-community.nosdn.127.net/64e63d8a45a00599d8f4eb67b70f6883.png — 200 — 1.8 KiB — 1.9 s — h2https://luna-dict-community.nosdn.127.net/84cbd355815f9b4958723ebffaddac96.pngluna-dict-community.nosdn.127.net/8... https://luna-dict-community.nosdn.127.net/84cbd355815f9b4958723ebffaddac96.png — 200 — 1.6 KiB — 1.9 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADgAAAA4CAYAAACohjseAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADgAAAA4CAYAAACohjseAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAQCAYAAAD0xERiAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAQCAYAAAD0xERiAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datahttps://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/banner.19d6197.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/banner.19d6197.png — 200 — 199.6 KiB — 11 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAARCAYAAADdRIy+AAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAARCAYAAADdRIy+AAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datahttps://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/search_icon.8b36c2f.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/search_icon.8b36c2f.png — 200 — 1.5 KiB — 12 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/word_book_btn.f206077.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/word_book_btn.f206077.png — 200 — 1.3 KiB — 11 ms — h2https://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttfydlunacommon-cdn.nosdn.127.net/f90e... https://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttf — 200 — 153.7 KiB — 12 ms — h2
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.3 s LCP 2.6 shttps://youdao.com// https://youdao.com/ — 200 — 47.8 KiB — 830 ms — http/1.1https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.cssshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.css — 200 — 4.9 KiB — 22 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/1.0.0/bury.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/1.0.0/bury.js — 200 — 351 B — 42 ms — h2https://shared.ydstatic.com/js/rlog/v1.jsshared.ydstatic.com/js/rlog/v1.js https://shared.ydstatic.com/js/rlog/v1.js — 200 — 2.9 KiB — 28 ms — h2https://shared.ydstatic.com/dict/yd_products/online/1.1.2/dist/lib/yd-nav.jsshared.ydstatic.com/dict/yd_product... https://shared.ydstatic.com/dict/yd_products/online/1.1.2/dist/lib/yd-nav.js — 200 — 15.3 KiB — 43 ms — h2https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/swiper/swiper-bundle.min.js — 200 — 39.4 KiB — 31 ms — h2https://shared.ydstatic.com/js/yadk/1.1.3.jsshared.ydstatic.com/js/yadk/1.1.3.j... https://shared.ydstatic.com/js/yadk/1.1.3.js — 200 — 4.0 KiB — 32 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/c2d2466.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/c2d2466.js — 200 — 1.6 KiB — 44 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/d123544.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/d123544.js — 200 — 97.7 KiB — 56 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/a37463c.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/a37463c.js — 200 — 382.4 KiB — 90 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/b3a6af8.js — 200 — 27.1 KiB — 45 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/1782785.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/1782785.js — 200 — 27.5 KiB — 53 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/4c4c86e.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/4c4c86e.js — 200 — 7.8 KiB — 51 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/88b4b21.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/88b4b21.js — 200 — 17.7 KiB — 50 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/78e5a59.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/78e5a59.js — 200 — 24.3 KiB — 54 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/27211f1.jsshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/27211f1.js — 200 — 21.1 KiB — 57 ms — h2https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=pageview&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818248947&_nref=&_nurl=https%3A%2F%2Fyoudao.com%2F&_nres=800x600&_nlmf=1776818248&_njve=0&_nchr=utf-8&_nfrg=rlogs.youdao.com/rlog.php?_npid=dic... https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=pageview&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818248947&_nref=&_nurl=https%3A%2F%2Fyoudao.com%2F&_nres=800x600&_nlmf=1776818248&_njve=0&_nchr=utf-8&_nfrg= — 200 — 165 B — 537 ms — h2https://ydlunacommon-cdn.nosdn.127.net/cb776e6995f1c703706cf8c4c39a7520.pngydlunacommon-cdn.nosdn.127.net/cb77... https://ydlunacommon-cdn.nosdn.127.net/cb776e6995f1c703706cf8c4c39a7520.png — 200 — 74.0 KiB — 13 ms — h2https://luna-dict-community.nosdn.127.net/db2266e756ded7094c5dcbeebd1e6a8b.pngluna-dict-community.nosdn.127.net/d... https://luna-dict-community.nosdn.127.net/db2266e756ded7094c5dcbeebd1e6a8b.png — 200 — 4.7 KiB — 1.8 s — h2https://ydlunacommon-cdn.nosdn.127.net/d4420720818e84a2cefb493dc0315992.pngydlunacommon-cdn.nosdn.127.net/d442... https://ydlunacommon-cdn.nosdn.127.net/d4420720818e84a2cefb493dc0315992.png — 200 — 15.8 KiB — 12 ms — h2https://luna-dict-community.nosdn.127.net/ae3b4b07a09823bf38d7bb815c6ea139.pngluna-dict-community.nosdn.127.net/a... https://luna-dict-community.nosdn.127.net/ae3b4b07a09823bf38d7bb815c6ea139.png — 200 — 1.9 KiB — 1.8 s — h2https://luna-dict-community.nosdn.127.net/64e63d8a45a00599d8f4eb67b70f6883.pngluna-dict-community.nosdn.127.net/6... https://luna-dict-community.nosdn.127.net/64e63d8a45a00599d8f4eb67b70f6883.png — 200 — 1.8 KiB — 1.9 s — h2https://luna-dict-community.nosdn.127.net/84cbd355815f9b4958723ebffaddac96.pngluna-dict-community.nosdn.127.net/8... https://luna-dict-community.nosdn.127.net/84cbd355815f9b4958723ebffaddac96.png — 200 — 1.6 KiB — 1.9 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADgAAAA4CAYAAACohjseAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADgAAAA4CAYAAACohjseAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAQCAYAAAD0xERiAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAQCAYAAAD0xERiAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datahttps://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/banner.19d6197.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/banner.19d6197.png — 200 — 199.6 KiB — 11 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAARCAYAAADdRIy+AAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAARCAYAAADdRIy+AAAACXBIWXMAABYlAAAWJQFJUiTwAAAAA… — 200 — 0 B — 0 ms — datahttps://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/search_icon.8b36c2f.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/search_icon.8b36c2f.png — 200 — 1.5 KiB — 12 ms — h2https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/word_book_btn.f206077.pngshared.ydstatic.com/market/souti/we... https://shared.ydstatic.com/market/souti/web_dict/online/3.0.4/dist/client/img/word_book_btn.f206077.png — 200 — 1.3 KiB — 11 ms — h2https://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttfydlunacommon-cdn.nosdn.127.net/f90e... https://ydlunacommon-cdn.nosdn.127.net/f90ef9f73a4c3bb6c686731ca109e7e2.ttf — 200 — 153.7 KiB — 12 ms — h2https://ydlunacommon-cdn.nosdn.127.net/95ea1806153ce395d1782b6f9e3bf1b9.ttfydlunacommon-cdn.nosdn.127.net/95ea... https://ydlunacommon-cdn.nosdn.127.net/95ea1806153ce395d1782b6f9e3bf1b9.ttf — 200 — 155.2 KiB — 14 ms — h2https://dict.youdao.com/vip/privilege/show/V2?bannerType=fanyiTopdict.youdao.com/vip/privilege/show/... https://dict.youdao.com/vip/privilege/show/V2?bannerType=fanyiTop — 200 — 379 B — 654 ms — http/1.1https://dict.youdao.com/suggest?num=5&ver=3.0&doctype=json&cache=false&le=endict.youdao.com/suggest?num=5&ver=3... https://dict.youdao.com/suggest?num=5&ver=3.0&doctype=json&cache=false&le=en — 200 — 476 B — 656 ms — http/1.1https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818249329&_nhrf=dict_result_enrlogs.youdao.com/rlog.php?_npid=dic... https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818249329&_nhrf=dict_result_en — 200 — 162 B — 178 ms — h2https://dict.youdao.com/login/acc/query/accountinfodict.youdao.com/login/acc/query/acc... https://dict.youdao.com/login/acc/query/accountinfo — 200 — 660 B — 664 ms — http/1.1https://dict-subsidiary.youdao.com/home/historynumdict-subsidiary.youdao.com/home/his... https://dict-subsidiary.youdao.com/home/historynum — 200 — 511 B — 1.3 s — http/1.1https://dict-subsidiary.youdao.com/home/content?invalid=&previewEnvTest=dict-subsidiary.youdao.com/home/con... https://dict-subsidiary.youdao.com/home/content?invalid=&previewEnvTest= — 200 — 1.8 KiB — 1.3 s — http/1.1https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818249344&_nhrf=home_pagerlogs.youdao.com/rlog.php?_npid=dic... https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818249344&_nhrf=home_page — 200 — 161 B — 178 ms — h2https://dict.youdao.com/login/acc/query/accountinfodict.youdao.com/login/acc/query/acc... https://dict.youdao.com/login/acc/query/accountinfo — 200 — 661 B — 993 ms — http/1.1https://ydlunacommon-cdn.nosdn.127.net/34fc63aec40764e53867880b34aa72c3.pngydlunacommon-cdn.nosdn.127.net/34fc... https://ydlunacommon-cdn.nosdn.127.net/34fc63aec40764e53867880b34aa72c3.png — 200 — 668 B — 4 ms — h2https://ydlunacommon-cdn.nosdn.127.net/506a4c648a86e3cfdaeccb89a5cb7cab.pngydlunacommon-cdn.nosdn.127.net/506a... https://ydlunacommon-cdn.nosdn.127.net/506a4c648a86e3cfdaeccb89a5cb7cab.png — 200 — 2.1 KiB — 4 ms — h2https://ydlunacommon-cdn.nosdn.127.net/6431061837bf33c78edf8dce7fcc6ee2.pngydlunacommon-cdn.nosdn.127.net/6431... https://ydlunacommon-cdn.nosdn.127.net/6431061837bf33c78edf8dce7fcc6ee2.png — 200 — 2.2 KiB — 4 ms — h2data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA…data:application/font-woff;charset=... data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA… — 200 — 1.6 KiB — 18 ms — datahttps://ydlunacommon-cdn.nosdn.127.net/564134e3399558839eb480fc32e70c8f.pngydlunacommon-cdn.nosdn.127.net/5641... https://ydlunacommon-cdn.nosdn.127.net/564134e3399558839eb480fc32e70c8f.png — 200 — 629.6 KiB — 46 ms — h2https://ydlunacommon-cdn.nosdn.127.net/ea119bfe4d8bdc2a56c6b3d94bfe89e0.pngydlunacommon-cdn.nosdn.127.net/ea11... https://ydlunacommon-cdn.nosdn.127.net/ea119bfe4d8bdc2a56c6b3d94bfe89e0.png — 200 — 2.9 KiB — 21 ms — h2https://ydlunacommon-cdn.nosdn.127.net/903e4618e1e83a61ee205d5fd03045a4.pngydlunacommon-cdn.nosdn.127.net/903e... https://ydlunacommon-cdn.nosdn.127.net/903e4618e1e83a61ee205d5fd03045a4.png — 200 — 11.7 KiB — 22 ms — h2https://ydlunacommon-cdn.nosdn.127.net/f090d066b3a9011fcc081e977f344b92.pngydlunacommon-cdn.nosdn.127.net/f090... https://ydlunacommon-cdn.nosdn.127.net/f090d066b3a9011fcc081e977f344b92.png — 200 — 4.6 KiB — 25 ms — h2https://ydlunacommon-cdn.nosdn.127.net/cc4afa89cc5497e23b355bc7436cb1c9.pngydlunacommon-cdn.nosdn.127.net/cc4a... https://ydlunacommon-cdn.nosdn.127.net/cc4afa89cc5497e23b355bc7436cb1c9.png — 200 — 15.9 KiB — 23 ms — h2https://ydlunacommon-cdn.nosdn.127.net/abc2e00ba59ece4101a89a01cce818da.pngydlunacommon-cdn.nosdn.127.net/abc2... https://ydlunacommon-cdn.nosdn.127.net/abc2e00ba59ece4101a89a01cce818da.png — 200 — 3.3 KiB — 27 ms — h2https://ydlunacommon-cdn.nosdn.127.net/72de4c935031d6bde7a24db9b8292450.pngydlunacommon-cdn.nosdn.127.net/72de... https://ydlunacommon-cdn.nosdn.127.net/72de4c935031d6bde7a24db9b8292450.png — 200 — 20.5 KiB — 25 ms — h2https://ydlunacommon-cdn.nosdn.127.net/c30638638a393dc38464600caf4888fb.jpgydlunacommon-cdn.nosdn.127.net/c306... https://ydlunacommon-cdn.nosdn.127.net/c30638638a393dc38464600caf4888fb.jpg — 200 — 61.1 KiB — 28 ms — h2https://ydlunacommon-cdn.nosdn.127.net/59ca496636079aa326959c478f9071b9.pngydlunacommon-cdn.nosdn.127.net/59ca... https://ydlunacommon-cdn.nosdn.127.net/59ca496636079aa326959c478f9071b9.png — 200 — 52.3 KiB — 42 ms — h2https://ydlunacommon-cdn.nosdn.127.net/74273ce67b24c610fc7e78b27ef9d856.pngydlunacommon-cdn.nosdn.127.net/7427... https://ydlunacommon-cdn.nosdn.127.net/74273ce67b24c610fc7e78b27ef9d856.png — 200 — 49.8 KiB — 29 ms — h2https://ydlunacommon-cdn.nosdn.127.net/8af5db90322ac519e2996ba6f512bb96.pngydlunacommon-cdn.nosdn.127.net/8af5... https://ydlunacommon-cdn.nosdn.127.net/8af5db90322ac519e2996ba6f512bb96.png — 200 — 92.5 KiB — 38 ms — h2https://ydlunacommon-cdn.nosdn.127.net/04629ec3346aa295947afaa83f8c3cae.pngydlunacommon-cdn.nosdn.127.net/0462... https://ydlunacommon-cdn.nosdn.127.net/04629ec3346aa295947afaa83f8c3cae.png — 200 — 199.7 KiB — 44 ms — h2https://ydlunacommon-cdn.nosdn.127.net/0068e84f65d9565b0e8d7f670a50840e.pngydlunacommon-cdn.nosdn.127.net/0068... https://ydlunacommon-cdn.nosdn.127.net/0068e84f65d9565b0e8d7f670a50840e.png — 200 — 56.2 KiB — 41 ms — h2https://ydlunacommon-cdn.nosdn.127.net/f93c05b26b7488ee17c2ac07b4d4bb28.pngydlunacommon-cdn.nosdn.127.net/f93c... https://ydlunacommon-cdn.nosdn.127.net/f93c05b26b7488ee17c2ac07b4d4bb28.png — 200 — 18.0 KiB — 40 ms — h2https://ydlunacommon-cdn.nosdn.127.net/76ec4d653e3ce6e96a948b6225ef7f62.pngydlunacommon-cdn.nosdn.127.net/76ec... https://ydlunacommon-cdn.nosdn.127.net/76ec4d653e3ce6e96a948b6225ef7f62.png — 200 — 13.8 KiB — 31 ms — h2https://ydlunacommon-cdn.nosdn.127.net/14ab10360787a3e68c17bc264823b7af.pngydlunacommon-cdn.nosdn.127.net/14ab... https://ydlunacommon-cdn.nosdn.127.net/14ab10360787a3e68c17bc264823b7af.png — 200 — 14.8 KiB — 40 ms — h2https://ydlunacommon-cdn.nosdn.127.net/0929ce6d102a82d275337ae34d5c7feb.pngydlunacommon-cdn.nosdn.127.net/0929... https://ydlunacommon-cdn.nosdn.127.net/0929ce6d102a82d275337ae34d5c7feb.png — 200 — 10.6 KiB — 32 ms — h2https://ydlunacommon-cdn.nosdn.127.net/b5ccf88c704695289b4b808eff71918b.pngydlunacommon-cdn.nosdn.127.net/b5cc... https://ydlunacommon-cdn.nosdn.127.net/b5ccf88c704695289b4b808eff71918b.png — 200 — 97.9 KiB — 44 ms — h2https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818250722&_nhrf=ad_show_1rlogs.youdao.com/rlog.php?_npid=dic... https://rlogs.youdao.com/rlog.php?_npid=dictweb&_ncat=event&_ncoo=819605774.8117107&_nssn=NULL&_nver=1.2.0&_ntms=1776818250722&_nhrf=ad_show_1 — 200 — 64 B — 179 ms — h2https://shared-https.ydstatic.com/images/favicon.icoshared-https.ydstatic.com/images/fa... https://shared-https.ydstatic.com/images/favicon.ico — 200 — 1.7 KiB — 5 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
72% of JavaScript execution is third-party
First-party Third-party 231ms · 27KB · ¥11/mo
shared.ydstatic.com
Other
Optional
Execution 172ms
Transfer 27 KB
Monthly Cost ¥8/mo
Unattributable
Other
Optional
Execution 59ms
Transfer 0 KB
Monthly Cost ¥3/mo

72% 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

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.

Send Feedback