https://productshotai.app
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
93
GRADE
A
FIX
2
REVIEW
2
PASS
19
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
58
96
77
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.62 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.05 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
947 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.053
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.54 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.
6.03 s
Page Load Progression
538 ms 1.1 s
1.6 s
2.2 s 2.7 s
3.2 s
3.8 s
4.3 sChecks
2619 PASS 2 REVIEW 2 FIX
FJS Execution CostAction6349ms total JS executionFIX
JS Execution Cost
Action6349ms total JS execution
6349ms total JS execution
Warning::
https://productshotai.app/_next/static/chunks/4bd1...: 1988ms CPU time
Warning::
https://productshotai.app/: 1530ms CPU time
Warning::
https://productshotai.app/_next/static/chunks/2108...: 1239ms CPU time
Warning::
Unattributable: 627ms CPU time
Warning::
https://productshotai.app/_next/static/chunks/1255...: 441ms CPU time
Info::
Third-party scripts: 125ms (2% of total)
Main Thread Breakdown
Script Evaluation 28% Other 27% Style & Layout 24% Rendering 16% Script Parsing & Compilation 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://productshotai.app/_next/static/chunks/4bd1b696-f785427dddbba9fb.js | 1988ms | 653ms | 31ms | 1st |
| https://productshotai.app/ | 1530ms | 133ms | 59ms | 1st |
| https://productshotai.app/_next/static/chunks/2108-f97493d7b81db84a.js | 1239ms | 87ms | 3ms | 1st |
| Unattributable | 627ms | 14ms | 0ms | 1st |
| https://productshotai.app/_next/static/chunks/1255-32f0b2a4c4d3a714.js | 441ms | 401ms | 31ms | 1st |
| https://productshotai.app/cdn-cgi/challenge-platform/scripts/jsd/main.js | 399ms | 383ms | 2ms | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496 | 68ms | 45ms | 3ms | 3rd |
| https://accounts.google.com/gsi/client | 58ms | 28ms | 29ms | 3rd |
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: private, no-cache, no-store, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
BJS Bundles19 scripts, 72 KB unusedREVIEW
JS Bundles
19 scripts, 72 KB unused
19 scripts, 72 KB unused
Warning::
https://accounts.google.com/gsi/client: 72 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 72 KB
72 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://accounts.google.com/gsi/client | 97 KB | 72 KB (75%) | ✓ | 3rd |
| https://productshotai.app/_next/static/chunks/5168-1e89660d87855463.js | 4 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/2108-f97493d7b81db84a.js | 6 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/main-app-168369fd0b85f5b4.js | 1 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/6091-6bdfcd8c31001171.js | 13 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/176-028c0e434f6e748f.js | 4 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/1356-e0431919f9b272a7.js | 6 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/6199-69bf43d3f1b562f8.js | 3 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/webpack-fd2b20755a98242e.js | 2 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/1255-32f0b2a4c4d3a714.js | 44 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
JavaScript Blocking
2 JS blocking issue(s) detected
2 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.
Warning::
Total JS execution time is 6.3 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
APage Weight Budget728 KB transferred, 57 requestsPASS
Page Weight Budget
728 KB transferred, 57 requests
728 KB transferred, 57 requests
Info::
Page weighs 1.9 MB (728 KB transferred)
Info::
57 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
728 KB transferred
57 requests
0.15 g CO2 per page load
JavaScript 298.6 KiB 41%
Images 259.7 KiB 36%
Fonts 74.3 KiB 10%
HTML 56.5 KiB 8%
Other 34.3 KiB 5%
CSS 1.5 KiB 0%
Other 1.5 KiB 0%
Other 1.1 KiB 0%
Other 813 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party Impact20% third-party, 0 ms blockingPASS
Third-Party Impact
20% third-party, 0 ms blocking
20% third-party, 0 ms blocking
Info::
Third-party code accounts for 20% of page weight (145.0 KiB of 728.3 KiB)
Info::
Third-party blocking time is low (0 ms)
80%
20%
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+Image Optimization25 images, 0 KB saveablePASS
Image Optimization
25 images, 0 KB saveable
25 images, 0 KB saveable
Info::
All images are well-optimized
25 images 260 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+Font Loading2 fonts (74 KB)PASS
Font Loading
2 fonts (74 KB)
2 fonts (74 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
74 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
313510e2713fb214-s.p.woff2 woff2 swap
Size 34 KB
Load time 42 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
bb3ef058b751a6ad-s.p.woff2 woff2 swap
Size 40 KB
Load time 42 ms
Start 414 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+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
AResource Hints4 hints, 0 missing preconnectsPASS
Resource Hints
4 hints, 0 missing preconnects
4 hints, 0 missing preconnects
Warning::
2 font preload(s) missing `crossorigin` -- font will be downloaded twice
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /_next/static/media/313510e2713fb214-s.p.woff2, /_next/static/media/bb3ef058b751a6ad-s.p.woff2. Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Info::
Page uses 4 resource hint(s)
Current Resource Hints
preconnect—
preload 4
dns-prefetch—
prefetch—
4 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /_next/static/media/313510e2713fb214-s.p.woff2, /_next/static/media/bb3ef058b751a6ad-s.p.woff2. Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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 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: private, no-cache, no-store, max-age=0, 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: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
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 Inventory57 resources · 728 KB · 72 KB savings availablePASS
Page Weight Inventory
57 resources · 728 KB · 72 KB savings available
57 resources · 728 KB · 72 KB savings available
Info::
Within 1MB page-weight target
Got: 728 KB
Info::
~72 KB of savings available
Info::
11 third-party resources (20% of weight)
57 resources · 728.3 KiB · 11 third-party Within 1MB page-weight target
JavaScript 41% · 298.6 KiB
Image 40% · 293.8 KiB
Font 10% · 74.3 KiB
Document 8% · 56.5 KiB
Other 0% · 3.6 KiB
CSS 0% · 1.5 KiB
~72.2 KiB of savings available
Remove unused JavaScript: 72.2 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 57 resources | 728.3 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
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
Network Waterfall57 requests over 3689msINFO
Network Waterfall
57 requests over 3689ms
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
2% of JavaScript execution is third-party
First-party Third-party 125ms · 108KB · €1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 68ms | 11 KB | — | €0/mo | Optional |
accounts.google.com accounts.google.com | Other | 58ms | 97 KB | 75% | €0/mo | Optional |
static.cloudflareinsights.com
Other
Execution 68ms
Transfer 11 KB
Monthly Cost €0/mo
accounts.google.com
Other
Execution 58ms
Transfer 97 KB
Unused 75%
Monthly Cost €0/mo
75% of accounts.google.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization111 images, 1297 KB total, 472 KB wastedINFO
Image Optimization
111 images, 1297 KB total, 472 KB wasted
Image Optimization Audit
Total Images
111
Total Size
1297 KB
Oversized
29
Wasted
472 KB
60 missing dimensions 15 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.