Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.16 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
0 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.
6.24 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.
0 ms
Page Load Progression
FPage Weight BudgetAction3.3 MB transferred, 180 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction16201ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.overstock.com/ygCSE6ve/hsMa9_J/XJp0ivM/5p/baiJtLzrctGwwmJ1/DQdKdDY/FiNWJg9h/IDIB | 3035ms | 2670ms | 207ms | 3rd |
| Unattributable | 2572ms | 514ms | 0ms | 3rd |
| https://www.overstock.com/ygCSE6ve/hsMa9_J/XJp0ivM/5p/fNiJtLYXh7/S2dNdDY/Pgl6WShq/SHgPAg?v=55ce81bb-b57e-b526-96a8-641ae8ca0214 | 2027ms | 1874ms | 73ms | 3rd |
| https://www.overstock.com/interactions/gtm.js?id=GTM-KKD5CDX2 | 1360ms | 1134ms | 166ms | 3rd |
| https://www.overstock.com/ | 1241ms | 98ms | 54ms | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0-kdcyyxfu6dv.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 972ms | 893ms | 37ms | 3rd |
| https://www.overstock.com/interactions/gtag/js?id=G-SJXPYFJ435&cx=c>m=4e64k1h2&sign=c1e1936437f61a50e50ffdf7628d91cfc1ec4d35fc034beafe294d5888cb4724_20260422 | 808ms | 681ms | 80ms | 3rd |
| https://www.overstock.com/ygCSE6ve/hsMa9_J/XJp0ivM/5p/baiJ/Eg49dDY/fkATDSc1/TUAq | 454ms | 315ms | 51ms | 3rd |
| https://cdn.evgnet.com/beacon/c556855555573h9jz3n3n3p091552376/overstock/scripts/evergage.min.js | 379ms | 276ms | 39ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 367ms | 320ms | 13ms | 3rd |
Showing top 10 of 29 scripts
DPage Weight InventoryAction180 resources · 3.3 MB · 0 KB savings availableFIX
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 180 resources | 3.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization82 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+JS Bundles55 scripts, 0 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://g.3gl.net/jp/13269/latest/InitialLoadScript.js | 23 KB | — | ✓ | 3rd |
| https://www.overstock.com/ygCSE6ve/hsMa9_J/XJp0ivM/5p/baiJtLzrctGwwmJ1/DQdKdDY/FiNWJg9h/IDIB | 183 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0qxyeid5~vb3z.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 14 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0nx1ekq7vixna.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 16 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/11k52l7jvov~m.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 20 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0-kdcyyxfu6dv.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 75 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0t12lwhpraczj.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 32 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/turbopack-03.e7fea48wgt.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 9 KB | — | ✓ | 3rd |
| https://ds-aksb-a.akamaihd.net/aksb.min.js | 5 KB | — | ✓ | 3rd |
| https://www.overstock.com/ostk/_next/static/chunks/0u9oi3x.tltkd.js?dpl=dpl_GAjgh4LA9YkAJxc2U2omssNPBZZD | 11 KB | — | ✓ | 3rd |
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall180 requests over 8082msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.overstock.com www.overstock.com | Other | 3035ms | 1 KB | — | $17/mo | Costly |
Unattributable Unattributable | Other | 2572ms | 0 KB | — | $15/mo | Costly |
www.overstock.com www.overstock.com | Other | 2027ms | 142 KB | — | $12/mo | Costly |
www.overstock.com www.overstock.com | Other | 1360ms | 183 KB | — | $8/mo | Costly |
www.overstock.com www.overstock.com | Other | 1241ms | 61 KB | — | $7/mo | Costly |
www.overstock.com www.overstock.com | Other | 972ms | 75 KB | — | $6/mo | Costly |
www.overstock.com www.overstock.com | Other | 808ms | 153 KB | — | $5/mo | Costly |
www.overstock.com www.overstock.com | Other | 454ms | 0 KB | — | $3/mo | Costly |
cdn.evgnet.com cdn.evgnet.com | Other | 379ms | 49 KB | — | $2/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 367ms | 26 KB | — | $2/mo | Costly |
www.overstock.com www.overstock.com | Other | 343ms | 14 KB | — | $2/mo | Costly |
dynamic.criteo.com dynamic.criteo.com | Other | 249ms | 25 KB | — | $1/mo | Costly |
cdn.taboola.com cdn.taboola.com | Other | 241ms | 30 KB | — | $1/mo | Costly |
www.overstock.com www.overstock.com | Other | 236ms | 9 KB | — | $1/mo | Costly |
api.consentjs.datagrail.io api.consentjs.datagrail.io | Other | 219ms | 34 KB | — | $1/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 212ms | 97 KB | — | $1/mo | Costly |
cdn.id5-sync.com cdn.id5-sync.com | Other | 196ms | 35 KB | — | $1/mo | Optional |
scripts.inmarkethub.com scripts.inmarkethub.com | Other | 187ms | 15 KB | — | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 177ms | 45 KB | — | $1/mo | Optional |
www.overstock.com www.overstock.com | Other | 160ms | 92 KB | — | $1/mo | Optional |
sslwidget.criteo.com sslwidget.criteo.com | Other | 152ms | 1 KB | — | $1/mo | Optional |
applepay.cdn-apple.com applepay.cdn-apple.com | Other | 103ms | 11 KB | — | $1/mo | Optional |
js.appboycdn.com js.appboycdn.com | Other | 92ms | 63 KB | — | $1/mo | Optional |
g.3gl.net g.3gl.net | Other | 90ms | 23 KB | — | $1/mo | Optional |
Bing UET bat.bing.com | Advertising | 84ms | 15 KB | — | $0/mo | Optional |
applepay.cdn-apple.com applepay.cdn-apple.com | Other | 78ms | 17 KB | — | $0/mo | Optional |
ds-aksb-a.akamaihd.net ds-aksb-a.akamaihd.net | Other | 66ms | 0 KB | — | $0/mo | Optional |
www.overstock.com www.overstock.com | Other | 51ms | 9 KB | — | $0/mo | Optional |
www.overstock.com www.overstock.com | Other | 50ms | 3 KB | — | $0/mo | Optional |
These scripts may cost more than they're worth
- www.overstock.com adds 3035ms and costs ~$17/month
- Unattributable adds 2572ms and costs ~$15/month
- www.overstock.com adds 2027ms and costs ~$12/month
- www.overstock.com adds 1360ms and costs ~$8/month
- www.overstock.com adds 1241ms and costs ~$7/month
- www.overstock.com adds 972ms and costs ~$6/month
- www.overstock.com adds 808ms and costs ~$5/month
- www.overstock.com adds 454ms and costs ~$3/month
- cdn.evgnet.com adds 379ms and costs ~$2/month
- Microsoft Clarity adds 367ms and costs ~$2/month
- www.overstock.com adds 343ms and costs ~$2/month
- dynamic.criteo.com adds 249ms and costs ~$1/month
- cdn.taboola.com adds 241ms and costs ~$1/month
- www.overstock.com adds 236ms and costs ~$1/month
- api.consentjs.datagrail.io adds 219ms and costs ~$1/month
- Facebook Pixel adds 212ms and costs ~$1/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.overstock.com takes 3035ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 2572ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 2027ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 1360ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 1241ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 972ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 808ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 454ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.evgnet.com takes 379ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Microsoft Clarity takes 367ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 343ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
dynamic.criteo.com takes 249ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.taboola.com takes 241ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.overstock.com takes 236ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
api.consentjs.datagrail.io takes 219ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Facebook Pixel takes 212ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev