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https://wordreference.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
2
PASS
10
INFO
2

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

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
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.
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.

447 ms

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

447 ms

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.

770 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

447 ms

Page Load Progression

483 ms
966 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.9 s
Checks
15
10 PASS 2 REVIEW 1 FIX
D
Third-Party Impact
Action
78% third-party, 0 ms blocking
FIX
78% third-party, 0 ms blocking
Warning::
Third-party code accounts for 78% of page weight (184.6 KiB of 237.4 KiB)
Info::
Third-party blocking time is low (0 ms)
22%
78%
First-party Third-party
B
JS Bundles
3 scripts, 67 KB unused
REVIEW
3 scripts, 67 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-WV46...: 67 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 67 KB
67 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-WV46ZWEMKW171 KB67 KB (39%)✓3rd
https://wordreference.com/js/homepagebundle.min.js22 KB—✓1st
https://www.wordreference.com/home/HomepageIP2CC1 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

B
HTTP Caching
no-cache, max-age=0
REVIEW
no-cache, max-age=0
Info::
Cache-Control header is set
Got: no-cache, max-age=0
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

no-cache, max-age=0

DirectiveValueMeaning
no-cache—Cache but always revalidate first
max-age0Cache for 0 seconds
A+
Page Weight Budget
237 KB transferred, 15 requests
PASS
237 KB transferred, 15 requests
Info::
Page weighs 670 KB (237 KB transferred)
Info::
15 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
237 KB / 2.4 MB budget
237 KB transferred
15 requests
0.05 g CO2 per page load
JavaScript 193.3 KiB 81%
HTML 12.3 KiB 5%
Other 12.2 KiB 5%
Images 10.8 KiB 5%
CSS 6.4 KiB 3%
Other 1.4 KiB 1%
Other 559 B 0%
Other 550 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 11 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
91ms total JS execution
PASS
91ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-WV46...: 91ms CPU time
Warning::
Third-party scripts: 91ms (100% of total)

Main Thread Breakdown

Script Evaluation 46% Other 26% Style & Layout 11% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-WV46ZWEMKW91ms74ms16ms3rd
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
Page Weight Inventory
15 resources · 237 KB · 67 KB savings available
PASS
15 resources · 237 KB · 67 KB savings available
Info::
Within 1MB page-weight target
Got: 237 KB
Info::
~67 KB of savings available
Warning::
8 third-party resources (78% of weight)
15 resources · 237.4 KiB · 8 third-party Within 1MB page-weight target
JavaScript 81% · 193.3 KiB
Image 9% · 22.0 KiB
Document 5% · 12.3 KiB
CSS 3% · 6.4 KiB
Other 1% · 3.4 KiB

~66.9 KiB of savings available

Remove unused JavaScript: 66.9 KiB
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Hetzner Online GmbH

Network Waterfall
15 requests over 1764ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 447 ms LCP 447 mshttps://wordreference.com// https://wordreference.com/ — 200 — 12.3 KiB — 832 ms — h2https://wordreference.com/css/homepagebundle.min.css/css/homepagebundle.min.css https://wordreference.com/css/homepagebundle.min.css — 200 — 6.4 KiB — 209 ms — h2https://wordreference.com/favicons/manifest.json?dict=enen&indexpage=1/favicons/manifest.json?dict=enen&i... https://wordreference.com/favicons/manifest.json?dict=enen&indexpage=1 — 301 — 492 B — 417 ms — h3https://wordreference.com/js/homepagebundle.min.js/js/homepagebundle.min.js https://wordreference.com/js/homepagebundle.min.js — 200 — 22.0 KiB — 217 ms — h2data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAARBxAR/Q9ERP8DAABWUDggGAAA…data:image/webp;base64,UklGRkoAAABX... data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAARBxAR/Q9ERP8DAABWUDggGAAA… — 200 — 0 B — 0 ms — datahttps://www.googletagmanager.com/gtag/js?id=G-WV46ZWEMKWwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-WV46ZWEMKW — 200 — 170.8 KiB — 259 ms — h2https://wordreference.com/home/HomepageIP2CC/home/HomepageIP2CC https://wordreference.com/home/HomepageIP2CC — 301 — 473 B — 208 ms — h3https://cdnawsw.wordreference.net/images/sprite_2022.webp?v=241226cdnawsw.wordreference.net/images/sp... https://cdnawsw.wordreference.net/images/sprite_2022.webp?v=241226 — 200 — 10.7 KiB — 196 ms — h3https://www.wordreference.com/home/HomepageIP2CCwww.wordreference.com/home/Homepage... https://www.wordreference.com/home/HomepageIP2CC — 200 — 554 B — 16 ms — h2https://www.wordreference.com/favicons/manifest.json?dict=enen&indexpage=1www.wordreference.com/favicons/mani... https://www.wordreference.com/favicons/manifest.json?dict=enen&indexpage=1 — 200 — 1.4 KiB — 13 ms — h2https://analytics.google.com/g/collect?v=2&tid=G-WV46ZWEMKW&gtm=45je64h1v894434626za200zd894434626&_p=1776812272243&_gaz=1&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&dma=0&_eu=AAAAAGA&are=1&cid=994355488.1776812273&frm=0&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&gaf=2&_s=1&tag_exp=0~115938466~115938468~117266400~117384405&sid=1776812272&sct=1&seg=0&dl=https%3A%2F%2Fwordreference.com%2F&dt=English%20to%20French%2C%20Italian%2C%20German%20%26%20Spanish%20Dictionary%20-%20WordReference.com&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=1202analytics.google.com/g/collect?v=2&... https://analytics.google.com/g/collect?v=2&tid=G-WV46ZWEMKW&gtm=45je64h1v894434626za200zd894434626&_p=1776812272243&_gaz=1&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&dma=0&_eu=AAAAAGA&are=1&cid=994355488.1776812273&frm=0&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&gaf=2&_s=1&tag_exp=0~115938466~115938468~117266400~117384405&sid=1776812272&sct=1&seg=0&dl=https%3A%2F%2Fwordreference.com%2F&dt=English%20to%20French%2C%20Italian%2C%20German%20%26%20Spanish%20Dictionary%20-%20WordReference.com&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=1202 — 204 — 550 B — 122 ms — h2https://stats.g.doubleclick.net/g/collect?v=2&tid=G-WV46ZWEMKW&cid=994355488.1776812273&gtm=45je64h1v894434626za200zd894434626&rcb=2&aip=1&dma=0&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&frm=0&tag_exp=0~115938466~115938468~117266400~117384405stats.g.doubleclick.net/g/collect?v... https://stats.g.doubleclick.net/g/collect?v=2&tid=G-WV46ZWEMKW&cid=994355488.1776812273&gtm=45je64h1v894434626za200zd894434626&rcb=2&aip=1&dma=0&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&frm=0&tag_exp=0~115938466~115938468~117266400~117384405 — 204 — 559 B — 180 ms — h2https://www.google.com.br/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-WV46ZWEMKW&cid=994355488.1776812273&gtm=45je64h1v894434626za200zd894434626&rcb=2&aip=1&dma=0&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&frm=0&tag_exp=0~115938466~115938468~117266400~117384405&z=49243756www.google.com.br/ads/ga-audiences?... https://www.google.com.br/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-WV46ZWEMKW&cid=994355488.1776812273&gtm=45je64h1v894434626za200zd894434626&rcb=2&aip=1&dma=0&gcs=G1--&gcd=13l3l3R3l5l1&npa=0&frm=0&tag_exp=0~115938466~115938468~117266400~117384405&z=49243756 — 200 — 63 B — 122 ms — h3https://wordreference.com/icon.svg/icon.svg https://wordreference.com/icon.svg — 200 — 6.6 KiB — 209 ms — h3https://wordreference.com/favicon.ico/favicon.ico https://wordreference.com/favicon.ico — 200 — 4.7 KiB — 207 ms — h3
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 91ms · 171KB · €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 91ms
Transfer 171 KB
Unused 39%
Monthly Cost €1/mo

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

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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