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https://prayforstrangers.com

Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
18
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.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

262 ms

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

589 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.

388 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.

590 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
21
18 PASS 1 REVIEW
B
HTTP Caching
max-age=0, private, must-revalidate
REVIEW
max-age=0, private, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, private, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, private, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
93 KB transferred, 14 requests
PASS
93 KB transferred, 14 requests
Info::
Page weighs 288 KB (93 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.02 g CO2 per page load
93 KB / 2.4 MB budget
93 KB transferred
14 requests
0.02 g CO2 per page load
JavaScript 64.3 KiB 69%
CSS 12.5 KiB 13%
HTML 8.6 KiB 9%
Other 4.8 KiB 5%
Other 1.3 KiB 1%
Other 979 B 1%
Images 918 B 1%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
12% third-party, 0 ms blocking
PASS
12% third-party, 0 ms blocking
Info::
Third-party code accounts for 12% of page weight (11.3 KiB of 93.3 KiB)
Info::
Third-party blocking time is low (0 ms)
88%
First-party Third-party
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
Warning::
https://prayforstrangers.com/images/logo-6bd83d5b2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
3 images 1 KB
0 oversized -0 KB
1 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

A+
JS Execution Cost
187ms total JS execution
PASS
187ms total JS execution
Info::
https://prayforstrangers.com/cdn-cgi/challenge-pla...: 97ms CPU time
Info::
https://prayforstrangers.com/: 90ms CPU time

Main Thread Breakdown

Script Evaluation 50% Style & Layout 26% Other 17%
ScriptTotalScriptingParse/CompileParty
https://prayforstrangers.com/cdn-cgi/challenge-platform/scripts/jsd/main.js97ms94ms1ms1st
https://prayforstrangers.com/90ms12ms1ms1st
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
3 scripts, 38 KB unused
PASS
3 scripts, 38 KB unused
Warning::
https://prayforstrangers.com/assets/js/app-5158da2...: 38 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 38 KB
38 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://prayforstrangers.com/assets/js/app-5158da218284ef65d0986bd55cffde03.js?vsn=d43 KB38 KB (89%)✓1st
https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e178179150949611 KB—✓3rd
https://prayforstrangers.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/80a697ecdece/main.js?10 KB—✓1st

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

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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0, private, must-revalidate
A+
Server-Timing Observability
3 Server-Timing entries advertised
PASS
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: accept-encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Page Weight Inventory
14 resources · 93 KB · 38 KB savings available
PASS
14 resources · 93 KB · 38 KB savings available
Info::
Within 1MB page-weight target
Got: 93 KB
Info::
3 third-party resources (12% of weight)
14 resources · 93.3 KiB · 3 third-party Within 1MB page-weight target
JavaScript 69% · 64.3 KiB
CSS 13% · 12.5 KiB
Document 9% · 8.6 KiB
Image 6% · 5.5 KiB
Other 3% · 2.5 KiB

~37.6 KiB of savings available

Remove unused JavaScript: 37.6 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: Cloudflare

Network Waterfall
14 requests over 389ms
INFO
0 ms 200 ms 400 ms 600 ms FCP 262 ms LCP 589 mshttps://prayforstrangers.com// https://prayforstrangers.com/ — 200 — 8.6 KiB — 121 ms — h3https://prayforstrangers.com/assets/css/app-424efed47f8e06cb7d1a954afd1b89fd.css?vsn=d/assets/css/app-424efed47f8e06cb7d1... https://prayforstrangers.com/assets/css/app-424efed47f8e06cb7d1a954afd1b89fd.css?vsn=d — 200 — 12.5 KiB — 17 ms — h3https://prayforstrangers.com/assets/js/app-5158da218284ef65d0986bd55cffde03.js?vsn=d/assets/js/app-5158da218284ef65d098... https://prayforstrangers.com/assets/js/app-5158da218284ef65d0986bd55cffde03.js?vsn=d — 200 — 42.8 KiB — 17 ms — h3https://prayforstrangers.com/images/logo-6bd83d5b22adc3a90fd931e21a37b978.svg?vsn=d/images/logo-6bd83d5b22adc3a90fd931... https://prayforstrangers.com/images/logo-6bd83d5b22adc3a90fd931e21a37b978.svg?vsn=d — 200 — 918 B — 14 ms — h3https://prayforstrangers.com/manifest.webmanifest/manifest.webmanifest https://prayforstrangers.com/manifest.webmanifest — 200 — 979 B — 108 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496 — 200 — 11.3 KiB — 30 ms — h2data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%22…data:image/svg+xml;utf8,%3Csvg%20xm... data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%22… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22non…data:image/svg+xml;utf8,%3Csvg%20xm... data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22non… — 200 — 0 B — 0 ms — datahttps://prayforstrangers.com/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://prayforstrangers.com/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 223 B — 7 ms — h3https://prayforstrangers.com/cdn-cgi/rum?/cdn-cgi/rum? https://prayforstrangers.com/cdn-cgi/rum? — 204 — 479 B — 11 ms — h3https://prayforstrangers.com/images/favicon-725c00af02e65e810d88bf79cd0ca589.svg?vsn=d/images/favicon-725c00af02e65e810d8... https://prayforstrangers.com/images/favicon-725c00af02e65e810d88bf79cd0ca589.svg?vsn=d — 200 — 985 B — 16 ms — h3https://prayforstrangers.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/80a697ecdece/main.js?/cdn-cgi/challenge-platform/h/b/scr... https://prayforstrangers.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/80a697ecdece/main.js? — 200 — 10.2 KiB — 11 ms — h3https://prayforstrangers.com/images/icon-192.png/images/icon-192.png https://prayforstrangers.com/images/icon-192.png — 200 — 3.7 KiB — 12 ms — h3https://prayforstrangers.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/80a697ecdece/0.767503903620384:1783494328:RpWOCyHKQR_QqMU8xAuLaUg3xuB6JbPUdtVeQb1f-LU/a17d6c765c742ef2/cdn-cgi/challenge-platform/h/b/jsd... https://prayforstrangers.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/80a697ecdece/0.767503903620384:1783494328:RpWOCyHKQR_QqMU8xAuLaUg3xuB6JbPUdtVeQb1f-LU/a17d6c765c742ef2 — 200 — 838 B — 8 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
2 images, 1 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

1 KB

2 missing dimensions 1 missing lazy loading
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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