https://www.paintcub.com
Performance
· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
95
GRADE
A
FIX
0
REVIEW
5
PASS
18
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
92
84
100
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.58 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.10 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
16 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.
3.44 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.
3.12 s
Page Load Progression
534 ms 1.1 s
1.6 s
2.1 s 2.7 s
3.2 s 3.7 s
4.3 sChecks
2518 PASS 5 REVIEW
BImage Optimization14 images, 0 KB saveableREVIEW
Image Optimization
14 images, 0 KB saveable
14 images, 0 KB saveable
Warning::
https://www.paintcub.com/wp-content/uploads/2023/0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
14 images 135 KB
0 oversized -0 KB
3 legacy format
1 missing dimensions CLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1962ms total JS executionREVIEW
JS Execution Cost
Action1962ms total JS execution
1962ms total JS execution
Warning::
https://www.paintcub.com/: 1038ms CPU time
Warning::
https://www.paintcub.com/wp-includes/js/jquery/jqu...: 444ms CPU time
Warning::
Unattributable: 325ms CPU time
Info::
https://www.paintcub.com/wp-content/themes/flatsom...: 99ms CPU time
Info::
https://www.paintcub.com/wp-content/cache/min/1/wp...: 56ms CPU time
Main Thread Breakdown
Other 46% Script Evaluation 21% Style & Layout 19% Rendering 7% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.paintcub.com/ | 1038ms | 80ms | 6ms | 1st |
| https://www.paintcub.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 444ms | 183ms | 16ms | 1st |
| Unattributable | 325ms | 10ms | 0ms | 1st |
| https://www.paintcub.com/wp-content/themes/flatsome/assets/js/chunk.slider.js?ver=3.17.2 | 99ms | 68ms | 17ms | 1st |
| https://www.paintcub.com/wp-content/cache/min/1/wp-content/themes/flatsome/assets/js/flatsome.js?ver=1782336313 | 56ms | 41ms | 6ms | 1st |
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
BHTTP Cachingpublic, max-age=0REVIEW
HTTP Caching
public, max-age=0
public, max-age=0
Info::
Cache-Control header is set
Got: public, max-age=0
Info::
Last-Modified header present
Cache-Control
public, max-age=0
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
A+Page Weight Budget316 KB transferred, 31 requestsPASS
Page Weight Budget
316 KB transferred, 31 requests
316 KB transferred, 31 requests
Info::
Page weighs 634 KB (316 KB transferred)
Info::
31 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
316 KB transferred
31 requests
0.06 g CO2 per page load
Images 135.1 KiB 43%
JavaScript 66.8 KiB 21%
Other 58.7 KiB 19%
HTML 28.3 KiB 9%
Fonts 27.0 KiB 9%
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+Font Loading2 fonts (27 KB)PASS
Font Loading
2 fonts (27 KB)
2 fonts (27 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
27 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
92zPtBhPNqw79Ij1E865zBU... woff swap
Size 13 KB
Load time 256 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
92zPtBhPNqw79Ij1E865zBU... woff swap
Size 14 KB
Load time 275 ms
Start 1.5 s
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 ~8 KB and ~16 ms
A+JS Bundles13 scripts, 0 KB unusedPASS
JS Bundles
13 scripts, 0 KB unused
13 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.paintcub.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 29 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 | 5 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-includes/js/hoverIntent.min.js?ver=1.10.2 | 1 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/cache/min/1/wp-content/themes/flatsome/assets/js/flatsome.js?ver=1782336313 | 16 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/cache/min/1/wp-content/themes/flatsome/inc/integrations/wp-rocket/flatsome-wp-rocket.js?ver=1782336313 | 0 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/cache/min/1/wp-content/themes/flatsome/inc/extensions/flatsome-live-search/flatsome-live-search.js?ver=1782336313 | 4 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/themes/flatsome/assets/libs/packery.pkgd.min.js?ver=3.17.2 | 9 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/plugins/wp-rocket/assets/js/lazyload/17.8.3/lazyload.min.js | 3 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/themes/flatsome/assets/js/flatsome.js?ver=f2c57559524d9813afd4 | 15 KB | — | ✓ | 1st |
| https://www.paintcub.com/wp-content/themes/flatsome/assets/js/chunk.slider.js?ver=3.17.2 | 13 KB | — | ✓ | 1st |
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 Hints7 hints, 0 missing preconnectsPASS
Resource Hints
7 hints, 0 missing preconnects
7 hints, 0 missing preconnects
Info::
Page uses 7 resource hint(s)
Current Resource Hints
preconnect—
preload 1
dns-prefetch 2
prefetch 4
7 resource hints configured
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: public, max-age=0
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,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::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
A+Page Weight Inventory31 resources · 316 KB · 0 KB savings availablePASS
Page Weight Inventory
31 resources · 316 KB · 0 KB savings available
31 resources · 316 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 316 KB
Info::
11 third-party resources (0% of weight)
31 resources · 315.9 KiB · 11 third-party Within 1MB page-weight target
Image 47% · 149.1 KiB
JavaScript 35% · 111.4 KiB
Document 9% · 28.3 KiB
Font 9% · 27.0 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 31 resources | 315.9 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::
3 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 DepthNo CSS performance depth issues detectedPASS
CSS Performance Depth
No CSS performance depth issues detected
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall31 requests over 1951msINFO
Network Waterfall
31 requests over 1951ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization50 images, 114 KB total, 0 KB wastedINFO
Image Optimization
50 images, 114 KB total, 0 KB wasted
Image Optimization Audit
Total Images
50
Total Size
114 KB
3 missing alt text 49 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.