https://www.daelim-electric.com
Performance
· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
90
GRADE
A
FIX
1
REVIEW
4
PASS
14
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
98
92
81
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
646 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.05 s
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.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
647 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.
1.05 s
Page Load Progression
375 ms
750 ms
1.1 s
1.5 s
1.9 s 2.2 s
2.6 s 3.0 sChecks
2214 PASS 4 REVIEW 1 FIX
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
Third-Party Impact
Action100% third-party, 0 ms blocking
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (736.7 KiB of 737.3 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
Main 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.
BMain HTML Cache-ControlMain HTML max-age=600 (~10min)REVIEW
Main HTML Cache-Control
Main HTML max-age=600 (~10min)
Main HTML max-age=600 (~10min)
Info::
Main HTML cached for 10 minutes -- mild staleness risk
Got: max-age=600, must-revalidate
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 Budget737 KB transferred, 64 requestsPASS
Page Weight Budget
737 KB transferred, 64 requests
737 KB transferred, 64 requests
Info::
Page weighs 1.4 MB (737 KB transferred)
Info::
Fonts are 478 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 478 KB
Info::
64 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
737 KB transferred
64 requests
0.15 g CO2 per page load
Fonts 478.4 KiB 65%
Images 143.2 KiB 19%
CSS 68.7 KiB 9%
HTML 31.0 KiB 4%
JavaScript 10.0 KiB 1%
Other 4.7 KiB 1%
Other 1.3 KiB 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+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 Optimization10 images, 0 KB saveablePASS
Image Optimization
10 images, 0 KB saveable
10 images, 0 KB saveable
Info::
All images are well-optimized
10 images 143 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost280ms total JS executionPASS
JS Execution Cost
280ms total JS execution
280ms total JS execution
Info::
https://daelim-electric.com/: 168ms CPU time
Info::
https://daelim-electric.com/cdn-cgi/challenge-plat...: 57ms CPU time
Info::
Unattributable: 55ms CPU time
Warning::
Third-party scripts: 225ms (80% of total)
Main Thread Breakdown
Style & Layout 31% Other 31% Script Evaluation 26% Parse HTML & CSS 7% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://daelim-electric.com/ | 168ms | 24ms | 2ms | 3rd |
| https://daelim-electric.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 57ms | 55ms | 0ms | 3rd |
| Unattributable | 55ms | 3ms | 0ms | 1st |
A+Font Loading8 fonts (478 KB)PASS
Font Loading
8 fonts (478 KB)
8 fonts (478 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
8
478 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
zendots-xrxx3icfm00igoe... woff2 swap
Size 14 KB
Load time 14 ms
Start 239 ms
Risk FOUT — text flashes from fallback to web font
poppins-pxieyp8kv8jhgfv... woff2 swap
Size 8 KB
Load time 16 ms
Start 240 ms
Risk FOUT — text flashes from fallback to web font
archivo-k3kpo8udi-1m0wl... woff2 swap
Size 35 KB
Load time 18 ms
Start 241 ms
Risk FOUT — text flashes from fallback to web font
poppins-pxibyp8kv8jhgfv... woff2 swap
Size 8 KB
Load time 15 ms
Start 242 ms
Risk FOUT — text flashes from fallback to web font
inter-ucc73fwrk3iltehus... woff2 swap
Size 48 KB
Load time 16 ms
Start 245 ms
Risk FOUT — text flashes from fallback to web font
Inter-VariableFont_slnt... woff2 swap
Size 319 KB
Load time 34 ms
Start 245 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
poppins-pxibyp8kv8jhgfv... woff2 swap
Size 8 KB
Load time 21 ms
Start 246 ms
Risk FOUT — text flashes from fallback to web font
roboto-kfo7cnqeu92fr1me... woff2 swap
Size 39 KB
Load time 25 ms
Start 246 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)
Fixing the unchecked items could save ~160 KB and ~320 ms
A+JS Bundles1 scripts, 0 KB unusedPASS
JS Bundles
1 scripts, 0 KB unused
1 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://daelim-electric.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/330e41bb475c/main.js? | 10 KB | — | ✓ | 3rd |
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+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+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
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.
APage Weight Inventory64 resources · 737 KB · 0 KB savings availablePASS
Page Weight Inventory
64 resources · 737 KB · 0 KB savings available
64 resources · 737 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 737 KB
Warning::
63 third-party resources (100% of weight)
Info::
1 resources over 200KB
64 resources · 737.3 KiB · 63 third-party Within 1MB page-weight target
Font 65% · 478.4 KiB
Image 20% · 146.8 KiB
CSS 9% · 68.7 KiB
Document 4% · 31.7 KiB
JavaScript 1% · 10.0 KiB
Other 0% · 1.8 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 64 resources | 737.3 KiB | ||||||
A+HTTP Cachingmax-age=600 (10 minutes)PASS
HTTP Caching
max-age=600 (10 minutes)
max-age=600 (10 minutes)
Info::
Cache-Control header is set
Got: max-age=600, must-revalidate
Info::
Effective TTL: 10 minutes (max-age=600)
Info::
Last-Modified header present
Cache-Control
max-age=600, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 600 | Cache for 10 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Effective TTL: 600 seconds
Network Waterfall64 requests over 394msINFO
Network Waterfall
64 requests over 394ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
80% of JavaScript execution is third-party
First-party Third-party 225ms · 31KB · $1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
daelim-electric.com daelim-electric.com | Other | 168ms | 31 KB | — | $1/mo | Optional |
daelim-electric.com daelim-electric.com | Other | 57ms | 0 KB | — | $0/mo | Optional |
daelim-electric.com
Other
Execution 168ms
Transfer 31 KB
Monthly Cost $1/mo
daelim-electric.com
Other
Execution 57ms
Transfer 0 KB
Monthly Cost $0/mo
80% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
Image Optimization9 images, 39 KB total, 0 KB wastedINFO
Image Optimization
9 images, 39 KB total, 0 KB wasted
Image Optimization Audit
Total Images
9
Total Size
39 KB
2 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.