https://squid-next-five.vercel.app
Performance
· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
93
GRADE
A
FIX
1
REVIEW
5
PASS
17
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
78
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.
1.84 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.69 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
121 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.
4.56 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.
4.69 s
Page Load Progression
Checks
2517 PASS 5 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 |
CJS Execution CostAction1404ms total JS executionREVIEW
JS Execution Cost
Action1404ms total JS execution
1404ms total JS execution
Warning::
https://squid-next-five.vercel.app/: 683ms CPU time
Warning::
https://squid-next-five.vercel.app/_next/static/im...: 499ms CPU time
Info::
Unattributable: 170ms CPU time
Info::
https://squid-next-five.vercel.app/_next/static/im...: 53ms CPU time
Main Thread Breakdown
Other 32% Style & Layout 27% Script Evaluation 27% Rendering 6% Script Parsing & Compilation 5% Parse HTML & CSS 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://squid-next-five.vercel.app/ | 683ms | 14ms | 3ms | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/1rd39qo4-7_k5.js | 499ms | 325ms | 19ms | 1st |
| Unattributable | 170ms | 9ms | 0ms | 1st |
| https://squid-next-five.vercel.app/_next/static/immutable/chunks/2suy93rarf9c1.js | 53ms | 37ms | 10ms | 1st |
BJS Bundles13 scripts, 102 KB unusedREVIEW
JS Bundles
13 scripts, 102 KB unused
13 scripts, 102 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: 102 KB
102 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 Budget729 KB transferred, 35 requestsPASS
Page Weight Budget
729 KB transferred, 35 requests
729 KB transferred, 35 requests
Info::
Page weighs 1.9 MB (729 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::
35 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
729 KB transferred
35 requests
0.15 g CO2 per page load
Fonts 280.9 KiB 39%
JavaScript 261.3 KiB 36%
CSS 167.6 KiB 23%
HTML 16.2 KiB 2%
Other 2.0 KiB 0%
Other 806 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+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 198 ms
Start 254 ms
Risk FOUT — text flashes from fallback to web font
geist_variable-s.p.2-i4... woff2 swap
Size 68 KB
Load time 191 ms
Start 255 ms
Risk FOUT — text flashes from fallback to web font
ibm_plex_mono_latin_400... woff2 swap
Size 15 KB
Load time 181 ms
Start 256 ms
Risk FOUT — text flashes from fallback to web font
ibm_plex_mono_latin_500... woff2 swap
Size 15 KB
Load time 150 ms
Start 256 ms
Risk FOUT — text flashes from fallback to web font
montserrat_latin_800_no... woff2 swap
Size 19 KB
Load time 176 ms
Start 256 ms
Risk FOUT — text flashes from fallback to web font
montserrat_latin_900_no... woff2 swap
Size 18 KB
Load time 174 ms
Start 257 ms
Risk FOUT — text flashes from fallback to web font
public_sans_latin_wght_... woff2 swap
Size 26 KB
Load time 208 ms
Start 257 ms
Risk FOUT — text flashes from fallback to web font
source_serif_4_latin_wg... woff2 swap
Size 50 KB
Load time 180 ms
Start 257 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+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 Hints9 hints, 0 missing preconnectsPASS
Resource Hints
9 hints, 0 missing preconnects
9 hints, 0 missing preconnects
Info::
Page uses 9 resource hint(s)
Current Resource Hints
preconnect—
preload 9
dns-prefetch—
prefetch—
9 resource hints configured
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 Inventory35 resources · 729 KB · 102 KB savings availablePASS
Page Weight Inventory
35 resources · 729 KB · 102 KB savings available
35 resources · 729 KB · 102 KB savings available
Info::
Within 1MB page-weight target
Got: 729 KB
Info::
~102 KB of savings available
35 resources · 728.7 KiB · 0 third-party Within 1MB page-weight target
Font 39% · 280.9 KiB
JavaScript 36% · 261.3 KiB
CSS 23% · 167.6 KiB
Document 2% · 16.2 KiB
Other 0% · 2.0 KiB
Image 0% · 806 B
~102.4 KiB of savings available
Remove unused JavaScript: 102.4 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 35 resources | 728.7 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
1 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
9 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
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 Waterfall35 requests over 2912msINFO
Network Waterfall
35 requests over 2912ms
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.