https://nationalenglishinstitute.com
Performance
· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
90
GRADE
A
FIX
2
REVIEW
5
PASS
12
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
91
90
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
858 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.81 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.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
858 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.
1.84 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 sChecks
2212 PASS 5 REVIEW 2 FIX
DPage Weight BudgetAction2.2 MB transferred, 45 requestsFIX
Page Weight Budget
Action2.2 MB transferred, 45 requests
2.2 MB transferred, 45 requests
Info::
Page weighs 2.9 MB (2.2 MB transferred)
Warning::
Images are 2.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.0 MB
Info::
45 HTTP requests
Info::
Estimated 0.46 g CO2 per page load
2.2 MB transferred
45 requests
0.46 g CO2 per page load
Images 2.0 MiB 90%
JavaScript 130.1 KiB 6%
CSS 45.8 KiB 2%
HTML 29.3 KiB 1%
Fonts 21.0 KiB 1%
Other 2.2 KiB 0%
Other 486 B 0%
0 2.4 MB 4.9 MB
Approaching limit
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Why this matters
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
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.
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 2.0 MB
0 oversized -0 KB
14 legacy format
0 missing dimensions CLS risk
BJS Bundles17 scripts, 56 KB unusedREVIEW
JS Bundles
17 scripts, 56 KB unused
17 scripts, 56 KB unused
Warning::
https://nationalenglishinstitute.com/wp-content/pl...: 36 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://nationalenglishinstitute.com/wp-includes/j...: 21 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 56 KB
56 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://nationalenglishinstitute.com/wp-content/plugins/ultimate-addons-for-gutenberg/assets/js/swiper-bundle.min.js?ver=2.20.0 | 37 KB | 36 KB (97%) | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 29 KB | 21 KB (72%) | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/plugins/ultimate-addons-for-gutenberg/assets/js/uagb-button-child.min.js?ver=2.20.0 | 1 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/plugins/ultimate-addons-for-gutenberg/assets/js/image-gallery.min.js?ver=2.20.0 | 3 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-includes/js/dist/dom-ready.min.js?ver=f77871ff7694fffea381 | 1 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/plugins/astra-sites/inc/lib/onboarding/assets/dist/template-preview/main.js?ver=089983451e6a251a0ab9 | 3 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/plugins/hostinger-reach/frontend/dist/blocks/subscription-view.js?ver=1779100659 | 3 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/plugins/ultimate-addons-for-gutenberg/assets/js/spectra-block-positioning.min.js?ver=2.20.0 | 2 KB | — | ✓ | 1st |
| https://nationalenglishinstitute.com/wp-content/themes/astra/assets/js/minified/frontend.min.js?ver=4.13.0 | 6 KB | — | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba1788362987495 | 10 KB | — | ✓ | 3rd |
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
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
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.
CPage Weight InventoryAction45 resources · 2.2 MB · 56 KB savings availableREVIEW
Page Weight Inventory
Action45 resources · 2.2 MB · 56 KB savings available
45 resources · 2.2 MB · 56 KB savings available
Warning::
Page weight 2.2 MB exceeds 1 MB target by 1.2 MB
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~56 KB of savings available
Info::
7 third-party resources (9% of weight)
Info::
2 resources over 200KB
45 resources · 2.2 MiB · 7 third-party 1.2 MiB over 1MB target
Image 90% · 2.0 MiB
JavaScript 6% · 130.1 KiB
CSS 2% · 45.8 KiB
Document 1% · 29.3 KiB
Font 1% · 21.0 KiB
Other 0% · 486 B
~56.5 KiB of savings available
Remove unused JavaScript: 56.5 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 45 resources | 2.2 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Third-Party Impact9% third-party, 0 ms blockingPASS
Third-Party Impact
9% third-party, 0 ms blocking
9% third-party, 0 ms blocking
Info::
Third-party code accounts for 9% of page weight (202.2 KiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
91%
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+JS Execution Cost136ms total JS executionPASS
JS Execution Cost
136ms total JS execution
136ms total JS execution
Info::
Unattributable: 74ms CPU time
Info::
https://nationalenglishinstitute.com/: 62ms CPU time
Main Thread Breakdown
Other 38% Style & Layout 24% Script Evaluation 21% Parse HTML & CSS 8% Script Parsing & Compilation 6% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 74ms | 1ms | 0ms | 1st |
| https://nationalenglishinstitute.com/ | 62ms | 11ms | 2ms | 1st |
A+Font Loading2 fonts (21 KB)PASS
Font Loading
2 fonts (21 KB)
2 fonts (21 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
21 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
memSYaGs126MiZpBA-UvWbX... woff2 swap
Size 13 KB
Load time 23 ms
Start 425 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLEj6Z1x... woff2 swap
Size 8 KB
Load time 27 ms
Start 425 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
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+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: 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::
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.
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 Waterfall45 requests over 1140msINFO
Network Waterfall
45 requests over 1140ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization15 images, 1416 KB total, 90 KB wastedINFO
Image Optimization
15 images, 1416 KB total, 90 KB wasted
Image Optimization Audit
Total Images
15
Total Size
1416 KB
Oversized
1
Wasted
90 KB
8 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.