https://krimpenaandenijssel.nl
Performance
· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
87
GRADE
B
FIX
0
REVIEW
7
PASS
13
INFO
4
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
82
85
73
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
680 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.10 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
922 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.
3.12 s
Page Load Progression
Checks
2413 PASS 7 REVIEW
CPage Weight BudgetAction1.8 MB transferred, 397 requestsREVIEW
Page Weight Budget
Action1.8 MB transferred, 397 requests
1.8 MB transferred, 397 requests
Info::
Page weighs 3.2 MB (1.8 MB transferred)
Info::
Fonts are 616 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 616 KB
Warning::
397 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.37 g CO2 per page load
1.8 MB transferred
397 requests
0.37 g CO2 per page load
Fonts 615.9 KiB 34%
Images 574.4 KiB 32%
JavaScript 405.9 KiB 22%
CSS 176.2 KiB 10%
HTML 24.2 KiB 1%
Other 16.1 KiB 1%
Other 4.6 KiB 0%
Other 1.1 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Why this matters
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
BJS Bundles20 scripts, 140 KB unusedREVIEW
JS Bundles
20 scripts, 140 KB unused
20 scripts, 140 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-0QFX...: 75 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-W3S...: 65 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 140 KB
140 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-0QFX5FC072&cx=c>m=4e6ba1 | 177 KB | 75 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W3STJSW2 | 122 KB | 65 KB (54%) | ✓ | 3rd |
| https://krimpenaandenijssel.nl/app/themes/lyfter/dist-legacy/assets/preload-helper-Djs6zF7v.js | 1 KB | — | ✓ | 1st |
| https://krimpenaandenijssel.nl/app/plugins/cookie-law-info/legacy/public/js/cookie-law-info-public.js?lfr=My41Ljg%3D | 8 KB | — | ✓ | 1st |
| https://cdn-eu.readspeaker.com/script/13334/webReader/webReader.js?pids=wr&ver=2.5.0 | 28 KB | — | ✓ | 3rd |
| https://krimpenaandenijssel.nl/app/themes/lyfter/dist-legacy/assets/legacy-ts-ykiYu1iR.js | 6 KB | — | ✓ | 1st |
| https://krimpenaandenijssel.nl/app/themes/lyfter/dist-legacy/assets/chunk-p60oCPdu.js | 0 KB | — | ✓ | 1st |
| https://krimpenaandenijssel.nl/app/themes/lyfter/dist-legacy/assets/defineProperty-Czyh_RxS.js | 1 KB | — | ✓ | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js?lfr=My43LjE%3D | 27 KB | — | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.4/js/bootstrap.min.js?lfr=Ny4xLjQ%3D | 9 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
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.
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
Document Compression
Document response uses gzip; brotli would be ~20% smaller
Document response uses gzip; brotli would be ~20% smaller
Info::
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.
BMain HTML Cache-ControlMain HTML max-age=3600 (~60min)REVIEW
Main HTML Cache-Control
Main HTML max-age=3600 (~60min)
Main HTML max-age=3600 (~60min)
Info::
Main HTML cached for 60 minutes -- mild staleness risk
Got: public, max-age=3600, s-maxage=86400
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
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.
CPage Weight InventoryAction397 resources · 1.8 MB · 140 KB savings availableREVIEW
Page Weight Inventory
Action397 resources · 1.8 MB · 140 KB savings available
397 resources · 1.8 MB · 140 KB savings available
Warning::
Page weight 1.8 MB exceeds 1 MB target by 794 KB
Got: 1.8 MB Expected: ≤ 1 MB
Info::
~140 KB of savings available
Info::
362 third-party resources (25% of weight)
Info::
2 resources over 200KB
397 resources · 1.8 MiB · 362 third-party 794.4 KiB over 1MB target
Font 34% · 615.9 KiB
Image 32% · 575.5 KiB
JavaScript 22% · 405.9 KiB
CSS 10% · 176.2 KiB
Document 1% · 24.2 KiB
Other 1% · 20.7 KiB
~140.0 KiB of savings available
Remove unused JavaScript: 140.0 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 397 resources | 1.8 MiB | ||||||
AThird-Party Impact25% third-party, 0 ms blockingPASS
Third-Party Impact
25% third-party, 0 ms blocking
25% third-party, 0 ms blocking
Info::
Third-party code accounts for 25% of page weight (460.3 KiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
75%
25%
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.
AImage Optimization8 images, 0 KB saveablePASS
Image Optimization
8 images, 0 KB saveable
8 images, 0 KB saveable
Info::
All images are well-optimized
8 images 574 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost498ms total JS executionPASS
JS Execution Cost
498ms total JS execution
498ms total JS execution
Info::
Unattributable: 196ms CPU time
Info::
https://krimpenaandenijssel.nl/: 188ms CPU time
Info::
https://krimpenaandenijssel.nl/app/themes/lyfter-c...: 60ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-0QFX...: 55ms CPU time
Info::
Third-party scripts: 55ms (11% of total)
Main Thread Breakdown
Script Evaluation 36% Other 27% Style & Layout 23% Rendering 7% Script Parsing & Compilation 4% Parse HTML & CSS 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 196ms | 69ms | 0ms | 1st |
| https://krimpenaandenijssel.nl/ | 188ms | 8ms | 1ms | 1st |
| https://krimpenaandenijssel.nl/app/themes/lyfter-child/dist/assets/script-DtG3K5aN.js | 60ms | 3ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-0QFX5FC072&cx=c>m=4e6ba1 | 55ms | 42ms | 12ms | 3rd |
A+Font Loading138 fonts (616 KB)PASS
Font Loading
138 fonts (616 KB)
138 fonts (616 KB)
Info::
138 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
138
616 KB total
Render-blocking
0
of 138
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
N041W13T-DNz2EmMq.woff2 woff2 swap
Size 22 KB
Load time 31 ms
Start 305 ms
Risk FOUT — text flashes from fallback to web font
N041W14T-B04Nr1Ea.woff2 woff2 swap
Size 23 KB
Load time 31 ms
Start 306 ms
Risk FOUT — text flashes from fallback to web font
x-font-ttf;charset=utf-... unknown swap
Size 13 KB
Load time 74 ms
Start 319 ms
Risk FOUT — text flashes from fallback to web font
font-woff;charset=utf-8... woff swap
Size 25 KB
Load time 75 ms
Start 320 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
fa-brands-400-ChfuyuEw.... woff2 swap
Size 117 KB
Load time 63 ms
Start 378 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-regular-400-BOgqvwHK... woff2 swap
Size 416 KB
Load time 63 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
math-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 396 ms
Risk FOUT — text flashes from fallback to web font
math-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 397 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 397 ms
Risk FOUT — text flashes from fallback to web font
greek-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 397 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 397 ms
Risk FOUT — text flashes from fallback to web font
latin-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 397 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 398 ms
Risk FOUT — text flashes from fallback to web font
hebrew-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 398 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 398 ms
Risk FOUT — text flashes from fallback to web font
symbols-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-300-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-300-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-300-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-300-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-300-normal... woff swap
Size 0 KB
Load time 0 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
math-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
math-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
greek-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 402 ms
Risk FOUT — text flashes from fallback to web font
latin-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 402 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
hebrew-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
symbols-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 404 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 405 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 405 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 405 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 406 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 406 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-400-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 406 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 406 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-400-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 407 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-400-normal... woff swap
Size 0 KB
Load time 0 ms
Start 407 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
math-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 407 ms
Risk FOUT — text flashes from fallback to web font
math-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 407 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 408 ms
Risk FOUT — text flashes from fallback to web font
greek-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 408 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 408 ms
Risk FOUT — text flashes from fallback to web font
latin-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 408 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 409 ms
Risk FOUT — text flashes from fallback to web font
hebrew-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 409 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 409 ms
Risk FOUT — text flashes from fallback to web font
symbols-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 410 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 410 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 410 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 410 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 411 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-500-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 411 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 412 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-500-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 412 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-500-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 412 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-500-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 412 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-500-normal... woff swap
Size 0 KB
Load time 0 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
math-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
math-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
greek-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
latin-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
hebrew-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
symbols-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-600-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 415 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-600-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 416 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-600-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 416 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-600-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 416 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-600-normal... woff swap
Size 0 KB
Load time 0 ms
Start 416 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
math-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
math-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
greek-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 418 ms
Risk FOUT — text flashes from fallback to web font
latin-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 418 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 418 ms
Risk FOUT — text flashes from fallback to web font
hebrew-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 418 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
symbols-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-700-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-700-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-700-normal... woff swap
Size 0 KB
Load time 0 ms
Start 420 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
math-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 421 ms
Risk FOUT — text flashes from fallback to web font
math-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 421 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 421 ms
Risk FOUT — text flashes from fallback to web font
greek-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 422 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 422 ms
Risk FOUT — text flashes from fallback to web font
latin-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 422 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
hebrew-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 423 ms
Risk FOUT — text flashes from fallback to web font
hebrew-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 423 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
symbols-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 423 ms
Risk FOUT — text flashes from fallback to web font
symbols-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 424 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 429 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 430 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
greek-ext-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 430 ms
Risk FOUT — text flashes from fallback to web font
greek-ext-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 430 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-800-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 430 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
vietnamese-800-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
vietnamese-800-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
cyrillic-ext-800-normal... woff2 swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
cyrillic-ext-800-normal... woff swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
latin-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-400-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
devanagari-400-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
devanagari-400-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 436 ms
Risk FOUT — text flashes from fallback to web font
latin-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 437 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
latin-ext-700-normal.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 437 ms
Risk FOUT — text flashes from fallback to web font
latin-ext-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 437 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
devanagari-700-normal.w... woff2 swap
Size 0 KB
Load time 0 ms
Start 437 ms
Risk FOUT — text flashes from fallback to web font
devanagari-700-normal.woff woff swap
Size 0 KB
Load time 0 ms
Start 437 ms
Risk FOUT — 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 ~278 KB and ~556 ms
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
AAsset Compression1 of 1 asset host still on gzipPASS
Asset Compression
1 of 1 asset host still on gzip
1 of 1 asset host still on gzip
Info::
cdn-eu.readspeaker.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.
Got: cdn-eu.readspeaker.com (application/javascript)
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 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.
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: BIT
A+HTTP Cachingmax-age=3600 (1 hour)PASS
HTTP Caching
max-age=3600 (1 hour)
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: public, max-age=3600, s-maxage=86400
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
CDN TTL: 1 day (s-maxage=86400)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max-age=3600, s-maxage=86400
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 3600 | Cache for 1 hour |
| s-maxage | 86400 | CDN caches for 1 day |
Effective TTL: 3600 seconds
Network Waterfall397 requests over 2484msINFO
Network Waterfall
397 requests over 2484ms
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
11% of JavaScript execution is third-party
First-party Third-party 55ms · 177KB · €1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 55ms | 177 KB | 42% | €1/mo | Optional |
Google Tag Manager
Tag Manager
Execution 55ms
Transfer 177 KB
Unused 42%
Monthly Cost €1/mo
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-14 — 2026-11-10)
LCP (p75)
1205 ms
96% good
INP (p75)
90 ms
96% good
CLS (p75)
0.000
99% good
FCP (p75)
984 ms
TTFB (p75)
725 ms
This origin passes Core Web Vitals assessment
Image Optimization8 images, 116 KB total, 0 KB wastedINFO
Image Optimization
8 images, 116 KB total, 0 KB wasted
Image Optimization Audit
Total Images
8
Total Size
116 KB
6 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.