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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
1
REVIEW
4
PASS
18
INFO
2

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

Mobile Desktop
49
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

3.07 s

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

3.19 s

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

14.05 s

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.

9.15 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.

23.42 s

Page Load Progression

902 ms
1.8 s
2.7 s
3.6 s
4.5 s
5.4 s
6.3 s
7.2 s
Checks
25
18 PASS 4 REVIEW 1 FIX
F
JS Execution Cost
Action
21462ms total JS execution
FIX
21462ms total JS execution
Warning::
https://localai.hex7.com/net.js: 20016ms CPU time
Warning::
Unattributable: 1355ms CPU time
Info::
https://localai.hex7.com/: 91ms CPU time

Main Thread Breakdown

Other 49% Script Evaluation 47% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://localai.hex7.com/net.js20016ms9005ms4ms1st
Unattributable1355ms1046ms0ms1st
https://localai.hex7.com/91ms6ms1ms1st
C
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
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.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 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.
Warning::
Total JS execution time is 21.5 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
395 KB transferred, 7 requests
PASS
395 KB transferred, 7 requests
Info::
Page weighs 392 KB (395 KB transferred)
Info::
Fonts are 265 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 265 KB
Info::
7 HTTP requests
Info::
Estimated 0.08 g CO2 per page load
395 KB / 2.4 MB budget
395 KB transferred
7 requests
0.08 g CO2 per page load
Fonts 265.0 KiB 67%
HTML 46.1 KiB 12%
Other 46.0 KiB 12%
JavaScript 27.2 KiB 7%
CSS 10.3 KiB 3%
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 Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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
No images on this page
PASS
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 Loading
3 fonts (265 KB)
PASS
3 fonts (265 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

265 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 3.1 s LCP 3.2 shttps://localai.hex7.com/fonts/vt323.ttfvt323.ttf https://localai.hex7.com/fonts/vt323.ttf — 144.2 KiB — 236 ms — font-display: swaphttps://localai.hex7.com/fonts/share-tech-mono.ttfshare-tech-mono.ttf https://localai.hex7.com/fonts/share-tech-mono.ttf — 41.2 KiB — 221 ms — font-display: swaphttps://localai.hex7.com/fonts/space-mono.ttfspace-mono.ttf https://localai.hex7.com/fonts/space-mono.ttf — 79.5 KiB — 221 ms — font-display: swap
vt323.ttf ttf swap
Size 144 KB
Load time 236 ms
Start 390 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
share-tech-mono.ttf ttf swap
Size 41 KB
Load time 221 ms
Start 390 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
space-mono.ttf ttf swap
Size 80 KB
Load time 221 ms
Start 390 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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)

Fixing the unchecked items could save ~152 KB and ~304 ms

A
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
Warning::
https://localai.hex7.com/net.js: unminified — 13 KB could be saved
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://localai.hex7.com/net.js27 KB—✗1st
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+
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=60 (≤ 5min) is appropriate
PASS
Main HTML max-age=60 (≤ 5min) is appropriate
Info::
Main HTML max-age=60 (≤ 5min) is appropriate
Got: public, max-age=60
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
A+
Page Weight Inventory
7 resources · 395 KB · 0 KB savings available
PASS
7 resources · 395 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 395 KB
7 resources · 394.6 KiB · 0 third-party Within 1MB page-weight target
Font 67% · 265.0 KiB
Document 23% · 92.1 KiB
JavaScript 7% · 27.2 KiB
CSS 3% · 10.3 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
HTTP Caching
max-age=60 (1 minute)
PASS
max-age=60 (1 minute)
Info::
Cache-Control header is set
Got: public, max-age=60
Info::
Effective TTL: 1 minute (max-age=60)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

public, max-age=60

DirectiveValueMeaning
public—Any cache may store this response
max-age60Cache for 1 minute
Effective TTL: 60 seconds
Asset Compression
No text asset hosts to measure
INFO
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 Waterfall
7 requests over 1059ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 3.1 s LCP 3.2 shttps://localai.hex7.com// https://localai.hex7.com/ — 200 — 46.1 KiB — 146 ms — h2https://localai.hex7.com/styles.css/styles.css https://localai.hex7.com/styles.css — 200 — 10.3 KiB — 207 ms — h2https://localai.hex7.com/net.js/net.js https://localai.hex7.com/net.js — 200 — 27.2 KiB — 193 ms — h2https://localai.hex7.com/fonts/vt323.ttf/fonts/vt323.ttf https://localai.hex7.com/fonts/vt323.ttf — 200 — 144.2 KiB — 236 ms — h3https://localai.hex7.com/fonts/share-tech-mono.ttf/fonts/share-tech-mono.ttf https://localai.hex7.com/fonts/share-tech-mono.ttf — 200 — 41.2 KiB — 221 ms — h3https://localai.hex7.com/fonts/space-mono.ttf/fonts/space-mono.ttf https://localai.hex7.com/fonts/space-mono.ttf — 200 — 79.5 KiB — 221 ms — h3https://localai.hex7.com/favicon.ico/favicon.ico https://localai.hex7.com/favicon.ico — 200 — 46.0 KiB — 154 ms — h3
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.

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