https://potentialspouse.com
Performance
· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
96
GRADE
A
FIX
0
REVIEW
2
PASS
17
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
98
90
100
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
507 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.12 s
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.
0.015
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
596 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.
1.12 s
Page Load Progression
375 ms
750 ms
1.1 s
1.5 s
1.9 s 2.2 s 2.6 s 3.0 sChecks
2117 PASS 2 REVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
BHTTP Cachingmax-age=0, private, must-revalidateREVIEW
HTTP Caching
max-age=0, private, must-revalidate
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
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
| private | — | Only browser cache, not CDN/proxy |
| must-revalidate | — | Must recheck with server after expiry |
APage Weight Budget840 KB transferred, 19 requestsPASS
Page Weight Budget
840 KB transferred, 19 requests
840 KB transferred, 19 requests
Info::
Page weighs 1.2 MB (840 KB transferred)
Info::
19 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
840 KB transferred
19 requests
0.17 g CO2 per page load
Images 641.6 KiB 76%
Fonts 85.5 KiB 10%
JavaScript 53.0 KiB 6%
CSS 44.9 KiB 5%
HTML 12.6 KiB 1%
Other 1.9 KiB 0%
Other 877 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party ImpactNo third-party resourcesPASS
Third-Party Impact
No third-party resources
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Image Optimization3 images, 0 KB saveablePASS
Image Optimization
3 images, 0 KB saveable
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 642 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost357ms total JS executionPASS
JS Execution Cost
357ms total JS execution
357ms total JS execution
Info::
https://potentialspouse.com/: 207ms CPU time
Info::
https://potentialspouse.com/assets/js/app-6641ef26...: 90ms CPU time
Info::
Unattributable: 61ms CPU time
Main Thread Breakdown
Other 44% Style & Layout 28% Script Evaluation 19% Parse HTML & CSS 4% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://potentialspouse.com/ | 207ms | 3ms | 0ms | 1st |
| https://potentialspouse.com/assets/js/app-6641ef2655df8d8ebce40b9075486f73.js?vsn=d | 90ms | 63ms | 4ms | 1st |
| Unattributable | 61ms | 1ms | 0ms | 1st |
A+Font Loading4 fonts (86 KB)PASS
Font Loading
4 fonts (86 KB)
4 fonts (86 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
86 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
space-grotesk-bold-04a0... woff2 swap
Size 13 KB
Load time 32 ms
Start 273 ms
Risk FOUT — text flashes from fallback to web font
inter-medium-42b9543077... woff2 swap
Size 24 KB
Load time 34 ms
Start 273 ms
Risk FOUT — text flashes from fallback to web font
inter-regular-f837d382a... woff2 swap
Size 24 KB
Load time 30 ms
Start 273 ms
Risk FOUT — text flashes from fallback to web font
inter-semibold-75fb76ec... woff2 swap
Size 24 KB
Load time 33 ms
Start 273 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
A+JS Bundles1 scripts, 36 KB unusedPASS
JS Bundles
1 scripts, 36 KB unused
1 scripts, 36 KB unused
Warning::
https://potentialspouse.com/assets/js/app-6641ef26...: 36 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 36 KB
36 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://potentialspouse.com/assets/js/app-6641ef2655df8d8ebce40b9075486f73.js?vsn=d | 53 KB | 36 KB (68%) | ✓ | 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 CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
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 AlgorithmMain response uses brotliPASS
Compression Algorithm
Main response uses brotli
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 PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
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 Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
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 Inventory19 resources · 840 KB · 36 KB savings availablePASS
Page Weight Inventory
19 resources · 840 KB · 36 KB savings available
19 resources · 840 KB · 36 KB savings available
Info::
Within 1MB page-weight target
Got: 840 KB
Info::
8 third-party resources (0% of weight)
Info::
1 resources over 200KB
19 resources · 840.4 KiB · 8 third-party Within 1MB page-weight target
Image 77% · 643.5 KiB
Font 10% · 85.5 KiB
JavaScript 6% · 53.0 KiB
CSS 5% · 44.9 KiB
Document 1% · 12.6 KiB
Other 0% · 877 B
~35.5 KiB of savings available
Remove unused JavaScript: 35.5 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 19 resources | 840.4 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall19 requests over 504msINFO
Network Waterfall
19 requests over 504ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization1 images, 641 KB total, 0 KB wastedINFO
Image Optimization
1 images, 641 KB total, 0 KB wasted
Image Optimization Audit
Total Images
1
Total Size
641 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.