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https://www.perplexity.ai

Performance

· 13 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
2
REVIEW
0
PASS
10
INFO
1

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

99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
50
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.

297 ms

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

888 ms

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

13 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.

402 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.

888 ms

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
13
10 PASS 2 FIX
D
Third-Party Impact
Action
81% third-party, 0 ms blocking
FIX
81% third-party, 0 ms blocking
Warning::
Third-party code accounts for 81% of page weight (397.5 KiB of 492.2 KiB)
Info::
Third-party blocking time is low (0 ms)
19%
81%
First-party Third-party
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-cache, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, no-store

DirectiveValueMeaning
no-cacheCache but always revalidate first
no-storeNever cache this response
A+
Page Weight Budget
492 KB transferred, 22 requests
PASS
492 KB transferred, 22 requests
Info::
Page weighs 945 KB (492 KB transferred)
Info::
22 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
492 KB / 2.4 MB budget
492 KB transferred
22 requests
0.10 g CO2 per page load
Other 288.6 KiB 59%
HTML 97.4 KiB 20%
JavaScript 96.8 KiB 20%
Images 7.6 KiB 2%
Other 1.7 KiB 0%
Other 67 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 8 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
267ms total JS execution
PASS
267ms total JS execution
Warning::
https://www.perplexity.ai/cdn-cgi/challenge-platfo...: 267ms CPU time

Main Thread Breakdown

Script Evaluation 76% Other 15% Style & Layout 4%
ScriptTotalScriptingParse/CompileParty
https://www.perplexity.ai/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9e8bd1c5eda7d107267ms256ms4ms1st
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+
JS Bundles
11 scripts, 0 KB unused
PASS
11 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c12417176891760157 KB3rd
https://www.perplexity.ai/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9e8bd1c5eda7d10773 KB1st
blob:https://www.perplexity.ai/1795d28e-0484-4975-ae95-9ea938b171d40 KB3rd
https://challenges.cloudflare.com/turnstile/v0/b/625261456364/api.js?onload=OBvX9&render=explicit17 KB3rd
blob:https://www.perplexity.ai/f91809d1-b99f-4050-a2fd-7e219d312cf9-0 KB3rd
blob:https://challenges.cloudflare.com/668b0d41-a9ce-4231-b72c-b0acff5571bf0 KB3rd
blob:https://challenges.cloudflare.com/c4975a4a-db46-4269-983a-06fdb74c99cf-0 KB3rd
blob:https://challenges.cloudflare.com/c4975a4a-db46-4269-983a-06fdb74c99cf-0 KB3rd
blob:https://challenges.cloudflare.com/c4975a4a-db46-4269-983a-06fdb74c99cf-0 KB3rd
blob:https://challenges.cloudflare.com/c4975a4a-db46-4269-983a-06fdb74c99cf-0 KB3rd
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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
22 requests over 0ms
INFO

Performance analysis not available for this result.

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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