https://www.paintcub.com
Performance
· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
95
GRADE
A
FIX
0
REVIEW
5
PASS
14
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
99
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.
518 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
751 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.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.27 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.
759 ms
Page Load Progression
545 ms 1.1 s
1.6 s
2.2 s 2.7 s
3.3 s 3.8 s
4.4 sChecks
2114 PASS 5 REVIEW
BImage Optimization17 images, 0 KB saveableREVIEW
Image Optimization
17 images, 0 KB saveable
17 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.
17 images 600 KB
0 oversized -0 KB
6 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
BJS Execution Cost501ms total JS executionREVIEW
JS Execution Cost
501ms total JS execution
501ms total JS execution
Warning::
https://www.paintcub.com/: 290ms CPU time
Info::
Unattributable: 108ms CPU time
Info::
https://www.paintcub.com/wp-includes/js/jquery/jqu...: 103ms CPU time
Main Thread Breakdown
Other 47% Style & Layout 22% Script Evaluation 19% Rendering 6% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.paintcub.com/ | 290ms | 8ms | 2ms | 1st |
| Unattributable | 108ms | 2ms | 0ms | 1st |
| https://www.paintcub.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 103ms | 50ms | 2ms | 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 |
APage Weight Budget788 KB transferred, 35 requestsPASS
Page Weight Budget
788 KB transferred, 35 requests
788 KB transferred, 35 requests
Info::
Page weighs 1.1 MB (788 KB transferred)
Info::
35 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
788 KB transferred
35 requests
0.16 g CO2 per page load
Images 600.4 KiB 76%
JavaScript 66.8 KiB 8%
Other 58.6 KiB 7%
Fonts 34.0 KiB 4%
HTML 28.4 KiB 4%
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 Loading3 fonts (34 KB)PASS
Font Loading
3 fonts (34 KB)
3 fonts (34 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
34 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
92zPtBhPNqw79Ij1E865zBU... woff swap
Size 13 KB
Load time 245 ms
Start 1.2 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 258 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
fl-icons.woff2 woff2 swap
Size 7 KB
Load time 268 ms
Start 1.2 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)
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 HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
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 Inventory35 resources · 788 KB · 0 KB savings availablePASS
Page Weight Inventory
35 resources · 788 KB · 0 KB savings available
35 resources · 788 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 788 KB
Info::
11 third-party resources (0% of weight)
35 resources · 788.2 KiB · 11 third-party Within 1MB page-weight target
Image 78% · 614.4 KiB
JavaScript 14% · 111.4 KiB
Font 4% · 34.0 KiB
Document 4% · 28.4 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 35 resources | 788.2 KiB | ||||||
Network Waterfall35 requests over 2045msINFO
Network Waterfall
35 requests over 2045ms
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.