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https://thebackrooms.onl

Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
97
GRADE
A+
FIX
1
REVIEW
2
PASS
20
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.
100
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.
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.

987 ms

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

987 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.

987 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.

987 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
25
20 PASS 2 REVIEW 1 FIX
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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.
A+
Page Weight Budget
37 KB transferred, 8 requests
PASS
37 KB transferred, 8 requests
Info::
Page weighs 116 KB (37 KB transferred)
Info::
8 HTTP requests
Info::
Estimated 0.01 g CO2 per page load
37 KB / 2.4 MB budget
37 KB transferred
8 requests
0.01 g CO2 per page load
HTML 10.6 KiB 29%
Images 9.4 KiB 26%
JavaScript 7.2 KiB 19%
Other 5.1 KiB 14%
CSS 4.6 KiB 12%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
-0% third-party, 0 ms blocking
PASS
-0% third-party, 0 ms blocking
Info::
Third-party code accounts for -0% of page weight (-1 B of 36.9 KiB)
Info::
Third-party blocking time is low (0 ms)
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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 9 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
235ms total JS execution
PASS
235ms total JS execution
Info::
https://thebackrooms.onl/: 122ms CPU time
Info::
Unattributable: 113ms CPU time

Main Thread Breakdown

Other 45% Style & Layout 21% Script Evaluation 18% Parse HTML & CSS 10% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://thebackrooms.onl/122ms16ms3ms1st
Unattributable113ms6ms0ms1st
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, 0 KB unused
PASS
3 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://thebackrooms.onl/wp-content/themes/generatepress/assets/js/menu.min.js?ver=3.3.12 KB—✓1st
blob:https://thebackrooms.onl/b5311589-d740-4688-99d0-224e75678c3d-0 KB—✓3rd
https://thebackrooms.onl/wp-includes/js/wp-emoji-release.min.js?ver=7.0.15 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+
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+
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
8 resources · 37 KB · 0 KB savings available
PASS
8 resources · 37 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 37 KB
Info::
1 third-party resources (-0% of weight)
8 resources · 36.9 KiB · 1 third-party Within 1MB page-weight target
Image 38% · 13.9 KiB
Document 30% · 11.2 KiB
JavaScript 19% · 7.2 KiB
CSS 12% · 4.6 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
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
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.
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+
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
8 requests over 388ms
INFO
0 ms 500 ms 1.0 s FCP 987 ms LCP 987 mshttps://thebackrooms.onl// https://thebackrooms.onl/ — 200 — 10.6 KiB — 113 ms — h2https://thebackrooms.onl/wp-content/themes/generatepress/assets/css/main.min.css?ver=3.3.1/wp-content/themes/generatepress/as... https://thebackrooms.onl/wp-content/themes/generatepress/assets/css/main.min.css?ver=3.3.1 — 200 — 4.6 KiB — 100 ms — h2https://thebackrooms.onl/wp-content/uploads/2023/12/cropped-thebackrooms.png/wp-content/uploads/2023/12/cropped... https://thebackrooms.onl/wp-content/uploads/2023/12/cropped-thebackrooms.png — 200 — 9.4 KiB — 93 ms — h2https://thebackrooms.onl/wp-content/themes/generatepress/assets/js/menu.min.js?ver=3.3.1/wp-content/themes/generatepress/as... https://thebackrooms.onl/wp-content/themes/generatepress/assets/js/menu.min.js?ver=3.3.1 — 200 — 1.8 KiB — 96 ms — h2blob:https://thebackrooms.onl/b5311589-d740-4688-99d0-224e75678c3dthebackrooms.onl/b5311589-d740-4688... blob:https://thebackrooms.onl/b5311589-d740-4688-99d0-224e75678c3d — 200 — -1 B — 47 ms — blobhttps://thebackrooms.onl/favicon.ico/favicon.ico https://thebackrooms.onl/favicon.ico — 302 — 635 B — 53 ms — h3https://thebackrooms.onl/wp-includes/js/wp-emoji-release.min.js?ver=7.0.1/wp-includes/js/wp-emoji-release.mi... https://thebackrooms.onl/wp-includes/js/wp-emoji-release.min.js?ver=7.0.1 — 200 — 5.4 KiB — 103 ms — h3https://thebackrooms.onl/wp-includes/images/w-logo-blue-white-bg.png/wp-includes/images/w-logo-blue-whi... https://thebackrooms.onl/wp-includes/images/w-logo-blue-white-bg.png — 200 — 4.5 KiB — 37 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
1 images, 9 KB total, 9 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

9 KB

Oversized

1

Wasted

9 KB

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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