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
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
i
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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.
6 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 3.7 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.
B
HTTP Caching
public, max-age=0
REVIEW
public, max-age=0
Info::
✓
Cache-Control header is set
Got: public, max-age=0
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max-age=0
Directive
Value
Meaning
public
—
Any cache may store this response
max-age
0
Cache for 0 seconds
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
7 fonts (89 KB)
PASS
7 fonts (89 KB)
Info::
i
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
89 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
icomoon.woffwoffswap
Size13 KB
Load time126 ms
Start999 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
pxiEyp8kv8JHgFVrJJfecnF...woff2swap
Size8 KB
Load time24 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
0QIvMX1D_JOuMwr7I_FMl_E...woff2swap
Size37 KB
Load time55 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLEj6Z1x...woff2swap
Size8 KB
Load time30 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
latin.woff2woff2swap
Size8 KB
Load time23 ms
Start1.3 s
RiskFOUT — text flashes from fallback to web font
latin-600.woff2woff2swap
Size8 KB
Load time21 ms
Start1.3 s
RiskFOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLGT9Z1x...woff2swap
Size8 KB
Load time24 ms
Start1.4 s
RiskFOUT — 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)
Fixing the unchecked items could save ~4 KB and ~8 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
✓
Page uses 2 resource hint(s)
Current Resource Hints
preconnect—
preload
1
dns-prefetch
1
prefetch—
2 resource hints configured
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
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
Asset Compression
1 of 2 asset hosts still on gzip
PASS
1 of 2 asset hosts still on gzip
Info::
✓
www.sitea.se serves assets with brotli (assets: 112)
Got: www.sitea.se (text/css)
Info::
i
cdn.trustindex.io serves assets with gzip; brotli would be ~20% smaller (assets: 55)
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.trustindex.io (text/javascript)
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+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
✓
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0
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.
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.
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Oderland Webbhotell AB
Network Waterfall
137 requests over 2227ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
86%of JavaScript execution is third-party
First-party Third-party3162ms · 204KB · kr191/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.sitea.se
www.sitea.se
Other
1238ms
48 KB
—
kr75/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
976ms
37 KB
—
kr59/mo
Costly
www.sitea.se
www.sitea.se
Other
582ms
0 KB
81%
kr35/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
265ms
119 KB
23%
kr16/mo
Costly
cdn.trustindex.io
cdn.trustindex.io
Other
102ms
0 KB
—
kr6/mo
Optional
www.sitea.se
Other
Costly
Execution1238ms
Transfer48 KB
Monthly Costkr75/mo
consent.cookiebot.com
Other
Costly
Execution976ms
Transfer37 KB
Monthly Costkr59/mo
www.sitea.se
Other
Costly
Execution582ms
Transfer0 KB
Unused81%
Monthly Costkr35/mo
consent.cookiebot.com
Other
Costly
Execution265ms
Transfer119 KB
Unused23%
Monthly Costkr16/mo
cdn.trustindex.io
Other
Optional
Execution102ms
Transfer0 KB
Monthly Costkr6/mo
These scripts may cost more than they're worth
www.sitea.se adds 1238ms and costs ~kr75/month
consent.cookiebot.com adds 976ms and costs ~kr59/month
www.sitea.se adds 582ms and costs ~kr35/month
consent.cookiebot.com adds 265ms and costs ~kr16/month
86% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
www.sitea.se takes 1238ms 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
consent.cookiebot.com takes 976ms 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
www.sitea.se takes 582ms 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
81% of www.sitea.se'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
consent.cookiebot.com takes 265ms 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.