Performance
· 26 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.
4.39 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
17.01 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.42 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.056
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.39 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.
17.43 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 44 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction3585ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://static.cdninstagram.com/rsrc.php/v4/yD/r/pwR47Z3NJfs.js | 1811ms | 1540ms | 24ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iRwq4/yV/l/en_US/ODdrm1k2rE0YVIET9B4DPJ7FaOWAkYVEmc30SWLE5C7fxvaiXx6SFXrytehNAqCKLcHHXx-UcY5X79OkwDV0OjQPj5Crb6ANxps6PKzAallKXHgPJB-GwmXDAfnwrqtA1fDIHsJdSlXFHEscweh9anlL9lBVTGA5RjGN8DxsNNuy7fdE.js | 424ms | 61ms | 339ms | 3rd |
| https://www.instagram.com/ | 354ms | 30ms | 1ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4ix-z4/y9/l/en_US/jjsRJE-Y85l.js | 348ms | 20ms | 73ms | 3rd |
| Unattributable | 291ms | 21ms | 0ms | 1st |
| https://static.cdninstagram.com/rsrc.php/v4igBN4/yh/l/en_US/tXQjfua0sy18v_r9dr3X36b7-ua_hnEvumWMf_K9LVXo_6v7hpzz_CMNvgCF-q7fPR2uQ3HyJLYY0gGx1KQ6zDtz0_uye9hpj8kK2h7jxN5iFfI2foDqJcWK-JvVshefvVspmawDlynTRt5XrUJo4RuJhRZNlOUn6Yi6uXAqzp11_JpComfvIjtw0WgaEOba1tO7lFGSBvj8_FEnWe0qnL2dG90HRtKQGwG0ihE-Qx8lcabVTDOwgx-s7CoHnWzvHO7H0hHH42DHgaRwGYmJZCcc2ZP1MqAdmh5DEndjkKeHWrECl3_n2Jc9FVqcd252S-KrBJoNka.js | 145ms | 10ms | 126ms | 3rd |
| data:text/javascript;base64,cmVxdWlyZUxhenkoWyJTZXJ2ZXJKU1BheWxvYWRMaXN0ZW5lciJdLGZ1bmN0aW9uKG0pe20ucHJvY2VzcygpO30sbnVsbCwweDEwMCk= | 82ms | 63ms | 16ms | 1st |
| https://static.cdninstagram.com/rsrc.php/v4i1kT4/yQ/l/en_US/_oQSZVVeyji.js | 69ms | 8ms | 55ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iDWR4/y3/l/en_US/MqZbzkQuezRa364Frzae8yfx_jVp_gWMZTLgm1xGHOx4prCs80DeqxxiFGHh9ozlMIFIElKBH-BMifGOZEe11axkTMMsiJC02ez.js | 61ms | 6ms | 55ms | 3rd |
FJS BundlesAction34 scripts, 1.5 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.cdninstagram.com/rsrc.php/v4iRwq4/yV/l/en_US/ODdrm1k2rE0YVIET9B4DPJ7FaOWAkYVEmc30SWLE5C7fxvaiXx6SFXrytehNAqCKLcHHXx-UcY5X79OkwDV0OjQPj5Crb6ANxps6PKzAallKXHgPJB-GwmXDAfnwrqtA1fDIHsJdSlXFHEscweh9anlL9lBVTGA5RjGN8DxsNNuy7fdE.js | 879 KB | 595 KB (68%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4igBN4/yh/l/en_US/tXQjfua0sy18v_r9dr3X36b7-ua_hnEvumWMf_K9LVXo_6v7hpzz_CMNvgCF-q7fPR2uQ3HyJLYY0gGx1KQ6zDtz0_uye9hpj8kK2h7jxN5iFfI2foDqJcWK-JvVshefvVspmawDlynTRt5XrUJo4RuJhRZNlOUn6Yi6uXAqzp11_JpComfvIjtw0WgaEOba1tO7lFGSBvj8_FEnWe0qnL2dG90HRtKQGwG0ihE-Qx8lcabVTDOwgx-s7CoHnWzvHO7H0hHH42DHgaRwGYmJZCcc2ZP1MqAdmh5DEndjkKeHWrECl3_n2Jc9FVqcd252S-KrBJoNka.js | 211 KB | 178 KB (84%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iDWR4/y3/l/en_US/MqZbzkQuezRa364Frzae8yfx_jVp_gWMZTLgm1xGHOx4prCs80DeqxxiFGHh9ozlMIFIElKBH-BMifGOZEe11axkTMMsiJC02ez.js | 165 KB | 129 KB (78%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i1kT4/yQ/l/en_US/_oQSZVVeyji.js | 126 KB | 111 KB (88%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4ix-z4/y9/l/en_US/jjsRJE-Y85l.js | 187 KB | 81 KB (43%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iRyB4/ye/l/en_US/WHOopEPm5Ed.js | 87 KB | 80 KB (92%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i4884/y_/l/en_US/dnok0zgcBWI.js | 62 KB | 58 KB (94%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iVv04/y9/l/en_US/HPVHUNAlhEX.js | 55 KB | 51 KB (94%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4/yA/r/MuNp3ftYOj5.js | 56 KB | 51 KB (92%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iWPu4/yA/l/en_US/HUrPRMPbjNhiN4bKk4bl3W3EJHxYtojJyZ3miApV9Cr1GO2ulPRUF-8phhshD5-sc1yDVLRUsQn4GEa2rrgkTPQAlu5Z9yENKAgsVjQqltBeBhH6f_7pAFRO2h2otzgdunJlV9GU3h_MzwXwn4xePVEiNjRFkhtb7M-D5pKzMGU-W7GsbA8xtVANryZ.js | 61 KB | 47 KB (77%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction44 resources · 2.4 MB · 1.5 MB savings availableFIX
~1.5 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 44 resources | 2.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
AImage Optimization4 images, 0 KB saveablePASS
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints24 hints, 0 missing preconnectsPASS
Current Resource Hints
24 resource hints configured
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://static.cdninstagram.com/rsrc.php/yR/r/92ZsVHNkyvf.webp (preload+preload).
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Network Waterfall44 requests over 1807msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
static.cdninstagram.com static.cdninstagram.com | Other | 1811ms | 76 KB | 42% | $24/mo | Costly |
static.cdninstagram.com static.cdninstagram.com | Other | 424ms | 879 KB | 68% | $6/mo | Costly |
www.instagram.com www.instagram.com | Other | 354ms | 117 KB | — | $5/mo | Costly |
static.cdninstagram.com static.cdninstagram.com | Other | 348ms | 187 KB | 43% | $5/mo | Costly |
static.cdninstagram.com static.cdninstagram.com | Other | 145ms | 211 KB | 84% | $2/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 69ms | 126 KB | 88% | $1/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 61ms | 165 KB | 78% | $1/mo | Optional |
These scripts may cost more than they're worth
- static.cdninstagram.com adds 1811ms and costs ~$24/month
- static.cdninstagram.com adds 424ms and costs ~$6/month
- www.instagram.com adds 354ms and costs ~$5/month
- static.cdninstagram.com adds 348ms and costs ~$5/month
90% 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
static.cdninstagram.com takes 1811ms 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
static.cdninstagram.com takes 424ms 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
68% of static.cdninstagram.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
www.instagram.com takes 354ms 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
static.cdninstagram.com takes 348ms 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
84% of static.cdninstagram.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
88% of static.cdninstagram.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
78% of static.cdninstagram.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-07-17 — 2026-08-13)
LCP (p75)
6966 ms
49% good
INP (p75)
0 ms
0% good
CLS (p75)
0.000
100% good
FCP (p75)
5261 ms
TTFB (p75)
4262 ms