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.
4.75 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
23.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.06 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.059
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.75 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.
23.46 s
Page Load Progression
FPage Weight BudgetAction3.5 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 CostAction4828ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://static.cdninstagram.com/rsrc.php/v4/yD/r/J6C86az-0qm.js | 2532ms | 2021ms | 29ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iwU34/y4/l/en_US/FCqjHo8lLfkkXFD3G_Dyz1FZy-cjjvPdWGoQOws4ugrt2zLptialj9PfYFw7X4tMIJAxzs3tzqtzMdLMtScRJxD3ZhZ8Qlq7kqt.js | 866ms | 71ms | 341ms | 3rd |
| Unattributable | 342ms | 21ms | 0ms | 1st |
| https://www.instagram.com/ | 309ms | 30ms | 1ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iGtr4/yX/l/en_US/CF0NDLCZQ2SK9QNqnY6HQqMm3F-oH2zh-JvBW_JJiBq2hzZfZ9OE2Hkx9dbDeJuQyAnzmiXNFjsiRSa8fo-Njc0MhBx4GecwlVDXs39_sZNGb75JNQefsDMjh7KVgaZETPosWvtsRcW7I8PgXdYivvCwsH6x1KT2mgT6CGqp0Dg0cbH-vozDzTmGAfJvli97-zy9W1GSBvj8_FEnWe0qnL2dG90HRtKQGwG0ihE-Qx8lcabVTDOwgx-s7CoHnJZCcc2ZP1Mqim_u89BurP8Admh5DEndjkKeHWrECl3_n2Jc9FVqcd252S-KrBJoNkaP1HIUYBqZ4h.js | 192ms | 25ms | 156ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v5/yI/l/0,cross/c6gAm7jYaXULf4VtNQ2uUPmyZ_OLfK-Uu3O926IpA3OufgQe914iiBfONMKn3YhINqU49pVNahkCkQvuWABIjhhRs97xFZK--hBruhBENOpKm_.css | 159ms | 0ms | 0ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i26x4/yX/l/en_US/8ftjK28Mq-R.js | 145ms | 27ms | 116ms | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iG4V4/yv/l/en_US/LyljSHsm9Ie1o27ovzqPwsjF3SDSnWIsGEOMLU1PZtNsp6bSTq_fejnuAGm55fmCWjiLX4PZxqJ0eiFGHh9ozlMIYQgcg-3wSLofO5jYz45T_3pejXfTwVs8xy9Cv35c7Xl7TMMsiJC02ez.js | 145ms | 11ms | 124ms | 3rd |
| data:text/javascript;base64,cmVxdWlyZUxhenkoWyJTZXJ2ZXJKU1BheWxvYWRMaXN0ZW5lciJdLGZ1bmN0aW9uKG0pe20ucHJvY2VzcygpO30sbnVsbCwweDEwMCk= | 81ms | 33ms | 38ms | 1st |
| https://static.cdninstagram.com/rsrc.php/v4i6Z44/yr/l/en_US/kk-O8PuNb7o.js | 56ms | 6ms | 49ms | 3rd |
FJS BundlesAction34 scripts, 1.6 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.cdninstagram.com/rsrc.php/v4iwU34/y4/l/en_US/FCqjHo8lLfkkXFD3G_Dyz1FZy-cjjvPdWGoQOws4ugrt2zLptialj9PfYFw7X4tMIJAxzs3tzqtzMdLMtScRJxD3ZhZ8Qlq7kqt.js | 780 KB | 519 KB (66%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iGtr4/yX/l/en_US/CF0NDLCZQ2SK9QNqnY6HQqMm3F-oH2zh-JvBW_JJiBq2hzZfZ9OE2Hkx9dbDeJuQyAnzmiXNFjsiRSa8fo-Njc0MhBx4GecwlVDXs39_sZNGb75JNQefsDMjh7KVgaZETPosWvtsRcW7I8PgXdYivvCwsH6x1KT2mgT6CGqp0Dg0cbH-vozDzTmGAfJvli97-zy9W1GSBvj8_FEnWe0qnL2dG90HRtKQGwG0ihE-Qx8lcabVTDOwgx-s7CoHnJZCcc2ZP1Mqim_u89BurP8Admh5DEndjkKeHWrECl3_n2Jc9FVqcd252S-KrBJoNkaP1HIUYBqZ4h.js | 283 KB | 211 KB (74%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4iG4V4/yv/l/en_US/LyljSHsm9Ie1o27ovzqPwsjF3SDSnWIsGEOMLU1PZtNsp6bSTq_fejnuAGm55fmCWjiLX4PZxqJ0eiFGHh9ozlMIYQgcg-3wSLofO5jYz45T_3pejXfTwVs8xy9Cv35c7Xl7TMMsiJC02ez.js | 240 KB | 201 KB (84%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i26x4/yX/l/en_US/8ftjK28Mq-R.js | 200 KB | 113 KB (56%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4/yg/r/AjTA-Cm7dSA.js | 83 KB | 82 KB (100%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i6Z44/yr/l/en_US/kk-O8PuNb7o.js | 81 KB | 74 KB (91%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4/yN/r/oIhx0GKr__P.js | 70 KB | 61 KB (88%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4ifLh4/yl/l/en_US/LL59zYofmcBJCvFYCauOMyHN5jUTGPYrXAGK-rvBHU1eDl-gJ5s0D7kLB3_VNT82X2phhshD5-sc1lUhMJ_Hy7pRlu5Z9yENKAgsVjQqltBeBhH6f_7pAFRO2h2otzgdunJlwn4xePVEiNjRFkhtb7M-D5pKzMGU-W7GsbA8xtVANryZ.js | 65 KB | 58 KB (89%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4/yU/r/CKKoD8n6EQB.js | 56 KB | 51 KB (92%) | ✓ | 3rd |
| https://static.cdninstagram.com/rsrc.php/v4i1kT4/y2/l/en_US/BuI2YM2kl-c.js | 57 KB | 51 KB (89%) | ✓ | 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 · 3.5 MB · 1.6 MB savings availableFIX
~1.6 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 44 resources | 3.5 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 Hints25 hints, 0 missing preconnectsPASS
Current Resource Hints
25 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/v5/y2/l/0,cross/wCrB0Y6jo2v.css (preload+preload), https://static.cdninstagram.com/rsrc.php/yJ/r/53X3pk-t2Gn.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 1915msINFO
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 | 2532ms | 74 KB | 42% | $34/mo | Costly |
static.cdninstagram.com static.cdninstagram.com | Other | 866ms | 780 KB | 66% | $12/mo | Costly |
www.instagram.com www.instagram.com | Other | 309ms | 114 KB | — | $4/mo | Costly |
static.cdninstagram.com static.cdninstagram.com | Other | 192ms | 283 KB | 74% | $3/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 159ms | 189 KB | — | $2/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 145ms | 200 KB | 56% | $2/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 145ms | 240 KB | 84% | $2/mo | Optional |
static.cdninstagram.com static.cdninstagram.com | Other | 56ms | 81 KB | 91% | $1/mo | Optional |
These scripts may cost more than they're worth
- static.cdninstagram.com adds 2532ms and costs ~$34/month
- static.cdninstagram.com adds 866ms and costs ~$12/month
- www.instagram.com adds 309ms and costs ~$4/month
91% 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 2532ms 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 866ms 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
66% 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 309ms 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
74% 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
56% 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
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
91% 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 (2026-06-11 — 2026-07-08)
LCP (p75)
1216 ms
92% good
INP (p75)
46 ms
99% good
CLS (p75)
0.000
100% good
FCP (p75)
758 ms
TTFB (p75)
563 ms