https://squid-next-five.vercel.app
Performance
· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
93
GRADE
A
FIX
1
REVIEW
4
PASS
14
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
99
93
100
91
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
400 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
880 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.
0.040
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.12 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.
880 ms
Page Load Progression
Checks
2114 PASS 4 REVIEW 1 FIX
DHTTP CachingActionno-store (uncacheable)FIX
HTTP Caching
Actionno-store (uncacheable)
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: private, no-cache, no-store, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
BJS Bundles13 scripts, 103 KB unusedREVIEW
JS Bundles
13 scripts, 103 KB unused
13 scripts, 103 KB unused
Warning::
https://squid-next-five.vercel.app/_next/static/im...: 75 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://squid-next-five.vercel.app/_next/static/im...: 27 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 103 KB
103 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/31ou1vy03ghij.js | 76 KB | 75 KB (100%) | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/1rd39qo4-7_k5.js | 72 KB | 27 KB (38%) | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/2suy93rarf9c1.js | 35 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/1mlftcslf095m.js | 4 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/31tcpybs-b989.js | 10 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/turbopack-2v65mu12f6tdx.js | 4 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/2r4ice16ep-y9.js | 4 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/3m19lim_yjr_d.js | 12 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/2_-78bk1p42i3.js | 10 KB | — | ✓ | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/2v3cv0w2fww2x.js | 8 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
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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
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.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
APage Weight Budget730 KB transferred, 39 requestsPASS
Page Weight Budget
730 KB transferred, 39 requests
730 KB transferred, 39 requests
Info::
Page weighs 1.9 MB (730 KB transferred)
Info::
Fonts are 281 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 281 KB
Info::
39 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
730 KB transferred
39 requests
0.15 g CO2 per page load
Fonts 280.9 KiB 38%
JavaScript 261.3 KiB 36%
CSS 167.5 KiB 23%
HTML 16.7 KiB 2%
Other 3.2 KiB 0%
Other 834 B 0%
0 2.4 MB 4.9 MB
Under budget
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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 OptimizationNo images on this pagePASS
Image Optimization
No images on this page
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost430ms total JS executionPASS
JS Execution Cost
430ms total JS execution
430ms total JS execution
Info::
https://squid-next-five.vercel.app/: 225ms CPU time
Info::
https://squid-next-five.vercel.app/_next/static/im...: 150ms CPU time
Info::
Unattributable: 55ms CPU time
Main Thread Breakdown
Other 34% Style & Layout 28% Script Evaluation 24% Rendering 6% Script Parsing & Compilation 4% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://squid-next-five.vercel.app/ | 225ms | 3ms | 2ms | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/1rd39qo4-7_k5.js | 150ms | 89ms | 4ms | 1st |
| Unattributable | 55ms | 3ms | 0ms | 1st |
A+Font Loading8 fonts (281 KB)PASS
Font Loading
8 fonts (281 KB)
8 fonts (281 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
8
281 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
geist_mono_variable-s.p... woff2 swap
Size 70 KB
Load time 50 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
geist_variable-s.p.2-i4... woff2 swap
Size 68 KB
Load time 63 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
ibm_plex_mono_latin_400... woff2 swap
Size 15 KB
Load time 34 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
ibm_plex_mono_latin_500... woff2 swap
Size 15 KB
Load time 33 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
montserrat_latin_800_no... woff2 swap
Size 19 KB
Load time 54 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
montserrat_latin_900_no... woff2 swap
Size 18 KB
Load time 52 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
public_sans_latin_wght_... woff2 swap
Size 26 KB
Load time 34 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
source_serif_4_latin_wg... woff2 swap
Size 50 KB
Load time 51 ms
Start 1.1 s
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+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+Document CompressionDocument response uses brotliPASS
Document Compression
Document response uses brotli
Document 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 uses no-store -- correct for sensitive/dynamic contentPASS
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: private, no-cache, no-store, max-age=0, 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: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
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 Inventory39 resources · 730 KB · 103 KB savings availablePASS
Page Weight Inventory
39 resources · 730 KB · 103 KB savings available
39 resources · 730 KB · 103 KB savings available
Info::
Within 1MB page-weight target
Got: 730 KB
Info::
~103 KB of savings available
39 resources · 730.5 KiB · 0 third-party Within 1MB page-weight target
Font 38% · 280.9 KiB
JavaScript 36% · 261.3 KiB
CSS 23% · 167.5 KiB
Document 2% · 16.7 KiB
Other 0% · 3.2 KiB
Image 0% · 834 B
~102.5 KiB of savings available
Remove unused JavaScript: 102.5 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 39 resources | 730.5 KiB | ||||||
Asset CompressionNo text asset hosts to measureINFO
Asset Compression
No text asset hosts to measure
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall39 requests over 2018msINFO
Network Waterfall
39 requests over 2018ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.