https://carddropx.com
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
96
GRADE
A
FIX
1
REVIEW
2
PASS
20
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
97
100
96
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.85 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.25 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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.85 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.
2.26 s
Page Load Progression
402 ms
804 ms
1.2 s
1.6 s 2.0 s
2.4 s 2.8 s
3.2 sChecks
2620 PASS 2 REVIEW 1 FIX
DHTTP CachingActionno-store (uncacheable)FIX
HTTP Caching
Actionno-store (uncacheable)
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-cache, no-store, must-revalidate
Info::
Last-Modified header present
Cache-Control
no-cache, no-store, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| must-revalidate | — | Must recheck with server after expiry |
BImage Optimization14 images, 0 KB saveableREVIEW
Image Optimization
14 images, 0 KB saveable
14 images, 0 KB saveable
Info::
All images are well-optimized
14 images 35 KB
0 oversized -0 KB
14 legacy format
0 missing dimensions CLS risk
CJS Execution CostAction1617ms total JS executionREVIEW
JS Execution Cost
Action1617ms total JS execution
1617ms total JS execution
Warning::
https://carddropx.com/: 1139ms CPU time
Warning::
Unattributable: 415ms CPU time
Info::
https://carddropx.com/assets/js/site-boot.js.8f35d...: 63ms CPU time
Main Thread Breakdown
Style & Layout 40% Other 38% Script Evaluation 11% Rendering 8%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://carddropx.com/ | 1139ms | 31ms | 4ms | 1st |
| Unattributable | 415ms | 17ms | 0ms | 1st |
| https://carddropx.com/assets/js/site-boot.js.8f35d060c2bc | 63ms | 35ms | 1ms | 1st |
A+Page Weight Budget318 KB transferred, 46 requestsPASS
Page Weight Budget
318 KB transferred, 46 requests
318 KB transferred, 46 requests
Info::
Page weighs 431 KB (318 KB transferred)
Info::
46 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
318 KB transferred
46 requests
0.07 g CO2 per page load
Fonts 176.2 KiB 55%
JavaScript 48.7 KiB 15%
Images 34.8 KiB 11%
CSS 21.1 KiB 7%
HTML 18.1 KiB 6%
Other 12.6 KiB 4%
Other 5.5 KiB 2%
Other 504 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party Impact3% third-party, 0 ms blockingPASS
Third-Party Impact
3% third-party, 0 ms blocking
3% third-party, 0 ms blocking
Info::
Third-party code accounts for 3% of page weight (10.2 KiB of 317.5 KiB)
Info::
Third-party blocking time is low (0 ms)
97%
First-party Third-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 Loading7 fonts (176 KB)PASS
Font Loading
7 fonts (176 KB)
7 fonts (176 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
176 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
Fraunces-Regular.woff2 woff2 swap
Size 19 KB
Load time 49 ms
Start 203 ms
Risk FOUT — text flashes from fallback to web font
Fraunces-Bold.woff2 woff2 swap
Size 19 KB
Load time 64 ms
Start 204 ms
Risk FOUT — text flashes from fallback to web font
GeistSans-Regular.woff2 woff2 swap
Size 34 KB
Load time 71 ms
Start 204 ms
Risk FOUT — text flashes from fallback to web font
GeistSans-SemiBold.woff2 woff2 swap
Size 36 KB
Load time 65 ms
Start 587 ms
Risk FOUT — text flashes from fallback to web font
GeistSans-Medium.woff2 woff2 swap
Size 35 KB
Load time 56 ms
Start 588 ms
Risk FOUT — text flashes from fallback to web font
GeistMono-Regular.woff2 woff2 swap
Size 16 KB
Load time 57 ms
Start 588 ms
Risk FOUT — text flashes from fallback to web font
GeistMono-Medium.woff2 woff2 swap
Size 17 KB
Load time 56 ms
Start 588 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)
A+JS Bundles14 scripts, 0 KB unusedPASS
JS Bundles
14 scripts, 0 KB unused
14 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792088814092 | 10 KB | — | ✓ | 3rd |
| https://carddropx.com/assets/js/seo.js.e3916c6d44ec | 3 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/menu-open-pending.js.0f024f6d137c | 2 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/links.js.19d38c19591b | 4 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/site-boot.js.8f35d060c2bc | 3 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/marketing.js.b9c6f9aad3d2 | 7 KB | — | ✓ | 1st |
| https://carddropx.com/app/js/theme.js.eb1fd1960b95 | 3 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/menu-open-init.js.2af8967878f1 | 2 KB | — | ✓ | 1st |
| https://carddropx.com/app/js/attribution.js.0dc1bf7ed24e | 2 KB | — | ✓ | 1st |
| https://carddropx.com/assets/js/fee-calculator.js.d91baa05843b | 4 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+Document CompressionDocument response uses brotliPASS
Document Compression
Document response uses brotli
Document 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 uses no-store -- correct for sensitive/dynamic contentPASS
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-cache, no-store, must-revalidate
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
Server-Timing Observability
3 Server-Timing entries advertised
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
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: Origin
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 Inventory46 resources · 318 KB · 0 KB savings availablePASS
Page Weight Inventory
46 resources · 318 KB · 0 KB savings available
46 resources · 318 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 318 KB
Info::
1 third-party resources (3% of weight)
46 resources · 317.5 KiB · 1 third-party Within 1MB page-weight target
Font 55% · 176.2 KiB
JavaScript 15% · 48.7 KiB
Image 15% · 46.9 KiB
CSS 7% · 21.1 KiB
Document 6% · 18.1 KiB
Other 2% · 6.4 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 46 resources | 317.5 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::
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 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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Asset CompressionNo text asset hosts to measureINFO
Asset Compression
No text asset hosts to measure
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 Waterfall46 requests over 899msINFO
Network Waterfall
46 requests over 899ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization1 images, 11 KB total, 0 KB wastedINFO
Image Optimization
1 images, 11 KB total, 0 KB wasted
Image Optimization Audit
Total Images
1
Total Size
11 KB
1 missing dimensions
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.