Skip to content
https://sandbox.thesslstore.com/ssltools/ssl-checker.php

Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
3
PASS
14
INFO
2

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

Mobile Desktop
99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
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.
40
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.

261 ms

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

765 ms

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

80 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.

391 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.

821 ms

Page Load Progression

573 ms
1.1 s
1.7 s
2.3 s
2.9 s
3.4 s
4.0 s
4.6 s
Checks
21
14 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
83% third-party, 0 ms blocking
FIX
83% third-party, 0 ms blocking
Warning::
Third-party code accounts for 83% of page weight (469.1 KiB of 563.8 KiB)
Info::
Third-party blocking time is low (0 ms)
17%
83%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
JS Execution Cost
600ms total JS execution
REVIEW
600ms total JS execution
Warning::
https://sandbox.thesslstore.com/cdn-cgi/challenge-...: 547ms CPU time
Info::
Unattributable: 53ms CPU time

Main Thread Breakdown

Script Evaluation 84% Other 10%
ScriptTotalScriptingParse/CompileParty
https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=a05457d78ac48acf547ms526ms5ms1st
Unattributable53ms3ms0ms1st
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
A+
Page Weight Budget
564 KB transferred, 17 requests
PASS
564 KB transferred, 17 requests
Info::
Page weighs 992 KB (564 KB transferred)
Info::
17 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
564 KB / 2.4 MB budget
564 KB transferred
17 requests
0.12 g CO2 per page load
Other 378.0 KiB 67%
HTML 89.1 KiB 16%
JavaScript 86.0 KiB 15%
Images 6.7 KiB 1%
Other 4.0 KiB 1%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget
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
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 7 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
JS Bundles
7 scripts, 0 KB unused
PASS
7 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=a05457d78ac48acf65 KB—✓1st
blob:https://sandbox.thesslstore.com/fc3a6da6-c2d9-4fff-a26c-a7171fc4f87d0 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/g/8fc8ed1d8752/api.js?onload=NoWu9&render=explicit21 KB—✓3rd
blob:https://sandbox.thesslstore.com/c20c31d6-a815-4300-9fb4-aacfd91636f2-0 KB—✓3rd
blob:https://challenges.cloudflare.com/27349e84-88b6-4e9b-9cba-67146be6cb3a0 KB—✓3rd
blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687-0 KB—✓3rd
blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687-0 KB—✓3rd
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Compression Algorithm
Main response uses brotli
PASS
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 Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server-Timing Observability
1 Server-Timing entries advertised
PASS
1 Server-Timing entries advertised
Info::
Server-Timing header advertises 1 timing entries
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
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 Inventory
17 resources · 564 KB · 0 KB savings available
PASS
17 resources · 564 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 564 KB
Warning::
11 third-party resources (83% of weight)
Info::
1 resources over 200KB
17 resources · 563.8 KiB · 11 third-party Within 1MB page-weight target
Other 67% · 378.1 KiB
Document 16% · 93.0 KiB
JavaScript 15% · 86.0 KiB
Image 1% · 6.7 KiB
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
17 requests over 1645ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 261 ms LCP 765 mshttps://sandbox.thesslstore.com/ssltools/ssl-checker.php/ssltools/ssl-checker.php https://sandbox.thesslstore.com/ssltools/ssl-checker.php — 307 — 97 B — 41 ms — http/1.1https://sandbox.thesslstore.com/ssltools/ssl-checker.php/ssltools/ssl-checker.php https://sandbox.thesslstore.com/ssltools/ssl-checker.php — 403 — 3.9 KiB — 11 ms — h2https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=a05457d78ac48acf/cdn-cgi/challenge-platform/h/g/orc... https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=a05457d78ac48acf — 200 — 64.6 KiB — 20 ms — h2blob:https://sandbox.thesslstore.com/fc3a6da6-c2d9-4fff-a26c-a7171fc4f87dsandbox.thesslstore.com/fc3a6da6-c2... blob:https://sandbox.thesslstore.com/fc3a6da6-c2d9-4fff-a26c-a7171fc4f87d — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/turnstile/v0/g/8fc8ed1d8752/api.js?onload=NoWu9&render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/g/8fc8ed1d8752/api.js?onload=NoWu9&render=explicit — 200 — 21.3 KiB — 27 ms — h3https://sandbox.thesslstore.com/favicon.ico/favicon.ico https://sandbox.thesslstore.com/favicon.ico — 403 — 6.0 KiB — 19 ms — h2https://sandbox.thesslstore.com/favicon.ico/favicon.ico https://sandbox.thesslstore.com/favicon.ico — 403 — 3.9 KiB — 14 ms — h2https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/flow/ov1/747612467:1780380015:7kN6rsbvkP-9u3nmYG_DRtelkY18L0zIcSf_R8fXArA/a05457d78ac48acf/aRLq6jGYOiz8Uj5spWUHvfFpYpZYmjqwVYnO1iEC.h4-1780381131-1.2.1.1-U0JbKQ47H5XFa_eqc52uDrk2yU2IZ6vJrVylBDomYBR1KibbyImevVu_zjRkzELO/cdn-cgi/challenge-platform/h/g/flo... https://sandbox.thesslstore.com/cdn-cgi/challenge-platform/h/g/flow/ov1/747612467:1780380015:7kN6rsbvkP-9u3nmYG_DRtelkY18L0zIcSf_R8fXArA/a05457d78ac48acf/aRLq6jGYOiz8Uj5spWUHvfFpYpZYmjqwVYnO1iEC.h4-1780381131-1.2.1.1-U0JbKQ47H5XFa_eqc52uDrk2yU2IZ6vJrVylBDomYBR1KibbyImevVu_zjRkzELO — 200 — 16.1 KiB — 16 ms — h2blob:https://sandbox.thesslstore.com/c20c31d6-a815-4300-9fb4-aacfd91636f2sandbox.thesslstore.com/c20c31d6-a8... blob:https://sandbox.thesslstore.com/c20c31d6-a815-4300-9fb4-aacfd91636f2 — 200 — -1 B — 43 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/vblrf/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=autochallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/vblrf/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=auto — 200 — 85.1 KiB — 41 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1 — 200 — 208 B — 10 ms — h3blob:https://challenges.cloudflare.com/27349e84-88b6-4e9b-9cba-67146be6cb3achallenges.cloudflare.com/27349e84-... blob:https://challenges.cloudflare.com/27349e84-88b6-4e9b-9cba-67146be6cb3a — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/193530203:1780380017:-IBTsTLgDfKIuyXv2D9NX4mhmQXfJEeG15wUXII4Lck/a05457d9f9925e49/E.C5WUq4z.elG1SxylAu0Rxz9marcIW9hh529Dhu.U4-1780381131-1.2.1.1-ja9cbhZX.HtlIB2FViaur4hbSMOMK42fLIO4lmdxn.PTqyO0JBDSoow3B3UPuw5bchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/193530203:1780380017:-IBTsTLgDfKIuyXv2D9NX4mhmQXfJEeG15wUXII4Lck/a05457d9f9925e49/E.C5WUq4z.elG1SxylAu0Rxz9marcIW9hh529Dhu.U4-1780381131-1.2.1.1-ja9cbhZX.HtlIB2FViaur4hbSMOMK42fLIO4lmdxn.PTqyO0JBDSoow3B3UPuw5b — 200 — 361.9 KiB — 105 ms — h3blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687challenges.cloudflare.com/34310783-... blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687 — 200 — -1 B — 140 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/d/a05457d9f9925e49/1780381132179/Z0SuUcgYS69rKXXchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/d/a05457d9f9925e49/1780381132179/Z0SuUcgYS69rKXX — 200 — 518 B — 21 ms — h3blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687challenges.cloudflare.com/34310783-... blob:https://challenges.cloudflare.com/34310783-8f6c-4a10-8c41-581c353bd687 — 200 — -1 B — 31 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/pat/a05457d9f9925e49/1780381132180/daa90f6c5b19be10bcaf949f337ec22e23713e510d4555fb9ea8daf63e700027/X8Sg6m9AYTz6MN6challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/pat/a05457d9f9925e49/1780381132180/daa90f6c5b19be10bcaf949f337ec22e23713e510d4555fb9ea8daf63e700027/X8Sg6m9AYTz6MN6 — -1 — 0 B — 0 ms —
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
1 images, 6 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

6 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.

Send Feedback