https://www.jsrcgroup.com/wp-content/uploads/logo-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8images3.5 MB
0oversized-0 KB
8legacy format
1missing dimensionsCLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
i
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
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
i
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
Main HTML max-age=600 (~10min)
REVIEW
Main HTML max-age=600 (~10min)
Info::
i
Main HTML cached for 10 minutes -- mild staleness risk
Got: max-age=600, must-revalidate
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
i
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.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
!
23 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 7.8 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.
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Warning::
!
4 `@font-face` rule(s) without `font-display` -- causes FOIT
An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
A+
Third-Party Impact
14% third-party, 0 ms blocking
PASS
14% third-party, 0 ms blocking
Info::
i
Third-party code accounts for 14% of page weight (829.7 KiB of 5.9 MiB)
Info::
✓
Third-party blocking time is low (0 ms)
86%
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+
Font Loading
6 fonts (1139 KB)
PASS
6 fonts (1139 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
1139 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
u-4i0qWljRw-PfU81xCKCpd...woff2swap
Size28 KB
Load time8 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size37 KB
Load time13 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
u-4V0qWljRw-Pd815fNqc8T...woff2swap
Size17 KB
Load time10 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
iconsmind.ttfttfswap
Size907 KB
Load time523 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fontawesome-webfont.woffwoffswap
Size96 KB
Load time479 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
OpenSans-Regular.woffwoffswap
Size54 KB
Load time489 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
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 ~771 KB and ~1542 ms
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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
✓
Page uses 1 resource hint(s)
Current Resource Hints
preconnect—
preload—
dns-prefetch
1
prefetch—
1 resource hints configured
A
Asset Compression
1 of 1 asset host still on gzip
PASS
1 of 1 asset host still on gzip
Info::
i
www.googletagmanager.com serves assets with gzip; brotli would be ~20% smaller (assets: 3)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
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::
i
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+
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
A
HTTP Caching
max-age=600 (10 minutes)
PASS
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::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
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 Waterfall
68 requests over 3619ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
21%of JavaScript execution is third-party
First-party Third-party1640ms · 744KB · $22/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Facebook Pixel
connect.facebook.net
Advertising
439ms
110 KB
38%
$6/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
356ms
177 KB
42%
$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
288ms
137 KB
54%
$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
245ms
133 KB
52%
$3/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
128ms
133 KB
75%
$2/mo
Optional
Facebook Pixel
connect.facebook.net
Advertising
123ms
33 KB
—
$2/mo
Optional
Google Analytics
www.google-analytics.com
Analytics
61ms
21 KB
—
$1/mo
Optional
Facebook Pixel
Advertising
Costly
Execution439ms
Transfer110 KB
Unused38%
Monthly Cost$6/mo
Google Tag Manager
Tag Manager
Costly
Execution356ms
Transfer177 KB
Unused42%
Monthly Cost$5/mo
Google Tag Manager
Tag Manager
Costly
Execution288ms
Transfer137 KB
Unused54%
Monthly Cost$4/mo
Google Tag Manager
Tag Manager
Costly
Execution245ms
Transfer133 KB
Unused52%
Monthly Cost$3/mo
Google Tag Manager
Tag Manager
Optional
Execution128ms
Transfer133 KB
Unused75%
Monthly Cost$2/mo
Facebook Pixel
Advertising
Optional
Execution123ms
Transfer33 KB
Monthly Cost$2/mo
Google Analytics
Analytics
Optional
Execution61ms
Transfer21 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
Facebook Pixel adds 439ms and costs ~$6/month
Google Tag Manager adds 356ms and costs ~$5/month
Google Tag Manager adds 288ms and costs ~$4/month
Google Tag Manager adds 245ms and costs ~$3/month
Facebook Pixel takes 439ms 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
Google Tag Manager takes 356ms 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
Google Tag Manager takes 288ms 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
54% of Google Tag Manager'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
Google Tag Manager takes 245ms 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
52% of Google Tag Manager'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
75% of Google Tag Manager'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.