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https://shotprep.io

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
2
REVIEW
2
PASS
11
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.23 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.88 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.24 s

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.

2.30 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.

4.88 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 s
Checks
17
11 PASS 2 REVIEW 2 FIX
D
JS Execution Cost
Action
3274ms total JS execution
FIX
3274ms total JS execution
Warning::
https://shotprep.io/_next/static/chunks/10~x95jhs6...: 1316ms CPU time
Warning::
https://shotprep.io/: 806ms CPU time
Warning::
https://shotprep.io/_next/static/chunks/0pfzsr1~bc...: 575ms CPU time
Warning::
Unattributable: 363ms CPU time
Info::
https://shotprep.io/_next/static/chunks/0kt_.0j901...: 77ms CPU time
Info::
Third-party scripts: 439ms (13% of total)

Main Thread Breakdown

Script Evaluation 55% Other 19% Style & Layout 15% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://shotprep.io/_next/static/chunks/10~x95jhs6ns3.js1316ms1163ms42ms1st
https://shotprep.io/806ms17ms12ms1st
https://shotprep.io/_next/static/chunks/0pfzsr1~bc4a2.js575ms514ms43ms1st
Unattributable363ms20ms0ms3rd
https://shotprep.io/_next/static/chunks/0kt_.0j901zal.js77ms44ms26ms1st
https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.369.277ms42ms34ms3rd
https://shotprep.io/_next/static/chunks/turbopack-00~wptou1ihkb.js60ms25ms3ms1st
D
HTTP Caching
Action
no-store (uncacheable)
FIX
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

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
no-cache—Cache but always revalidate first
no-store—Never cache this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
B
JS Bundles
16 scripts, 110 KB unused
REVIEW
16 scripts, 110 KB unused
Warning::
https://shotprep.io/_next/static/chunks/0pfzsr1~bc...: 33 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://shotprep.io/_next/static/chunks/10~x95jhs6...: 27 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://us-assets.i.posthog.com/static/surveys.js?...: 25 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://us-assets.i.posthog.com/static/posthog-rec...: 25 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 110 KB
110 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://shotprep.io/_next/static/chunks/0pfzsr1~bc4a2.js63 KB33 KB (52%)✓1st
https://shotprep.io/_next/static/chunks/10~x95jhs6ns3.js71 KB27 KB (39%)✓1st
https://us-assets.i.posthog.com/static/surveys.js?v=1.369.232 KB25 KB (80%)✓3rd
https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.369.251 KB25 KB (48%)✓3rd
https://shotprep.io/_next/static/chunks/0c~156nc_i3ig.js13 KB—✓1st
https://shotprep.io/_next/static/chunks/turbopack-00~wptou1ihkb.js5 KB—✓1st
https://shotprep.io/_next/static/chunks/054gu1sohjwr6.js2 KB—✓1st
https://shotprep.io/_next/static/chunks/0sl_nocd_j~un.js10 KB—✓1st
https://shotprep.io/_next/static/chunks/0yb2wil16uz6h.js2 KB—✓1st
https://shotprep.io/_next/static/chunks/0n.kggqhk7wie.js11 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

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

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

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
428 KB transferred, 25 requests
PASS
428 KB transferred, 25 requests
Info::
Page weighs 1.2 MB (428 KB transferred)
Info::
25 HTTP requests
Info::
Estimated 0.09 g CO2 per page load
428 KB / 2.4 MB budget
428 KB transferred
25 requests
0.09 g CO2 per page load
JavaScript 323.4 KiB 76%
Fonts 48.4 KiB 11%
Images 23.4 KiB 5%
CSS 18.1 KiB 4%
HTML 10.1 KiB 2%
Other 2.9 KiB 1%
Other 1.3 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
20% third-party, 0 ms blocking
PASS
20% third-party, 0 ms blocking
Info::
Third-party code accounts for 20% of page weight (83.8 KiB of 427.6 KiB)
Info::
Third-party blocking time is low (0 ms)
80%
20%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Info::
All images are well-optimized
2 images 23 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (48 KB)
PASS
1 fonts (48 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

48 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.2 s LCP 4.9 shttps://shotprep.io/_next/static/media/83afe278b6a6bb3c-s.p.0q-301v4kxxnr.woff283afe278b6a6bb3c-s.p.0q... https://shotprep.io/_next/static/media/83afe278b6a6bb3c-s.p.0q-301v4kxxnr.woff2 — 48.4 KiB — 413 ms — font-display: swap
83afe278b6a6bb3c-s.p.0q... woff2 swap
Size 48 KB
Load time 413 ms
Start 238 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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
—
preload
3
dns-prefetch
—
prefetch
—

3 resource hints configured

A+
Page Weight Inventory
25 resources · 428 KB · 110 KB savings available
PASS
25 resources · 428 KB · 110 KB savings available
Info::
Within 1MB page-weight target
Got: 428 KB
Info::
~110 KB of savings available
Info::
3 third-party resources (20% of weight)
25 resources · 427.6 KiB · 3 third-party Within 1MB page-weight target
JavaScript 76% · 323.4 KiB
Font 11% · 48.4 KiB
Image 6% · 26.3 KiB
CSS 4% · 18.1 KiB
Document 2% · 10.1 KiB
Other 0% · 1.3 KiB

~109.8 KiB of savings available

Remove unused JavaScript: 109.8 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
25 requests over 2098ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.2 s LCP 4.9 shttps://shotprep.io// https://shotprep.io/ — 200 — 10.1 KiB — 189 ms — h2https://shotprep.io/_next/static/media/83afe278b6a6bb3c-s.p.0q-301v4kxxnr.woff2/_next/static/media/83afe278b6a6bb3... https://shotprep.io/_next/static/media/83afe278b6a6bb3c-s.p.0q-301v4kxxnr.woff2 — 200 — 48.4 KiB — 413 ms — h2https://shotprep.io/branding/ShotPrep%20Logo_Wide_Black.svg/branding/ShotPrep%20Logo_Wide_Blac... https://shotprep.io/branding/ShotPrep%20Logo_Wide_Black.svg — 200 — 2.6 KiB — 370 ms — h2https://shotprep.io/_next/static/chunks/17heakrmec2oc.css/_next/static/chunks/17heakrmec2oc.... https://shotprep.io/_next/static/chunks/17heakrmec2oc.css — 200 — 18.1 KiB — 226 ms — h2https://shotprep.io/_next/static/chunks/0yb2wil16uz6h.js/_next/static/chunks/0yb2wil16uz6h.... https://shotprep.io/_next/static/chunks/0yb2wil16uz6h.js — 200 — 2.3 KiB — 297 ms — h2https://shotprep.io/_next/static/chunks/0v4u3m0g.42xq.js/_next/static/chunks/0v4u3m0g.42xq.... https://shotprep.io/_next/static/chunks/0v4u3m0g.42xq.js — 200 — 9.5 KiB — 187 ms — h2https://shotprep.io/_next/static/chunks/0kt_.0j901zal.js/_next/static/chunks/0kt_.0j901zal.... https://shotprep.io/_next/static/chunks/0kt_.0j901zal.js — 200 — 38.3 KiB — 277 ms — h2https://shotprep.io/_next/static/chunks/10~x95jhs6ns3.js/_next/static/chunks/10~x95jhs6ns3.... https://shotprep.io/_next/static/chunks/10~x95jhs6ns3.js — 200 — 70.9 KiB — 415 ms — h2https://shotprep.io/_next/static/chunks/0sl_nocd_j~un.js/_next/static/chunks/0sl_nocd_j~un.... https://shotprep.io/_next/static/chunks/0sl_nocd_j~un.js — 200 — 9.5 KiB — 268 ms — h2https://shotprep.io/_next/static/chunks/turbopack-00~wptou1ihkb.js/_next/static/chunks/turbopack-00~w... https://shotprep.io/_next/static/chunks/turbopack-00~wptou1ihkb.js — 200 — 4.7 KiB — 330 ms — h2https://shotprep.io/_next/static/chunks/054gu1sohjwr6.js/_next/static/chunks/054gu1sohjwr6.... https://shotprep.io/_next/static/chunks/054gu1sohjwr6.js — 200 — 1.7 KiB — 297 ms — h2https://shotprep.io/_next/static/chunks/0pfzsr1~bc4a2.js/_next/static/chunks/0pfzsr1~bc4a2.... https://shotprep.io/_next/static/chunks/0pfzsr1~bc4a2.js — 200 — 62.7 KiB — 395 ms — h2https://shotprep.io/_next/static/chunks/0c~156nc_i3ig.js/_next/static/chunks/0c~156nc_i3ig.... https://shotprep.io/_next/static/chunks/0c~156nc_i3ig.js — 200 — 13.2 KiB — 360 ms — h2https://shotprep.io/_next/static/chunks/0n.kggqhk7wie.js/_next/static/chunks/0n.kggqhk7wie.... https://shotprep.io/_next/static/chunks/0n.kggqhk7wie.js — 200 — 11.3 KiB — 209 ms — h2https://shotprep.io/_next/static/chunks/0cu4hb498oeom.js/_next/static/chunks/0cu4hb498oeom.... https://shotprep.io/_next/static/chunks/0cu4hb498oeom.js — 200 — 9.2 KiB — 200 ms — h2https://shotprep.io/_next/image?url=%2Fmarketing%2Fhero-shotlist.png&w=750&q=75/_next/image?url=%2Fmarketing%2Fher... https://shotprep.io/_next/image?url=%2Fmarketing%2Fhero-shotlist.png&w=750&q=75 — 200 — 20.8 KiB — 507 ms — h2https://shotprep.io/favicon.ico?favicon.0y004zo38o4um.ico/favicon.ico?favicon.0y004zo38o4um.... https://shotprep.io/favicon.ico?favicon.0y004zo38o4um.ico — 200 — 2.9 KiB — 170 ms — h2https://us-assets.i.posthog.com/array/phc_rHDLd2kPy9i7YJqNxURT74UZnuuoaMD6R4xHVBNYoBtc/config.jsus-assets.i.posthog.com/array/phc_r... https://us-assets.i.posthog.com/array/phc_rHDLd2kPy9i7YJqNxURT74UZnuuoaMD6R4xHVBNYoBtc/config.js — 200 — 964 B — 128 ms — h2https://shotprep.io/signup?_rsc=1r34m/signup?_rsc=1r34m https://shotprep.io/signup?_rsc=1r34m — 200 — 249 B — 1.2 s — h2https://shotprep.io/?_rsc=p37cr/?_rsc=p37cr https://shotprep.io/?_rsc=p37cr — 200 — 912 B — 567 ms — h2https://shotprep.io/193cf7d0eca47b9c/script.js/193cf7d0eca47b9c/script.js https://shotprep.io/193cf7d0eca47b9c/script.js — 200 — 4.9 KiB — 28 ms — h2https://shotprep.io/09829273f682fb5d/script.js/09829273f682fb5d/script.js https://shotprep.io/09829273f682fb5d/script.js — 200 — 1.4 KiB — 39 ms — h2https://shotprep.io/09829273f682fb5d/view/09829273f682fb5d/view https://shotprep.io/09829273f682fb5d/view — 200 — 184 B — 42 ms — h2https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.369.2us-assets.i.posthog.com/static/post... https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.369.2 — 200 — 51.0 KiB — 121 ms — h2https://us-assets.i.posthog.com/static/surveys.js?v=1.369.2us-assets.i.posthog.com/static/surv... https://us-assets.i.posthog.com/static/surveys.js?v=1.369.2 — 200 — 31.9 KiB — 124 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
13% of JavaScript execution is third-party
First-party Third-party 439ms · 51KB · $6/mo
Unattributable
Other
Costly
Execution 363ms
Transfer 0 KB
Monthly Cost $5/mo
us-assets.i.posthog.com
Other
Optional
Execution 77ms
Transfer 51 KB
Unused 48%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 363ms and costs ~$5/month

Unattributable takes 363ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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