Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.98 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.12 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.175
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.46 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
18.70 s
Page Load Progression
FPage Weight BudgetAction2.7 MB transferred, 99 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction8428ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.sverigesradio.se/_next/static/chunks/07n-9ddzh-ma-.js | 3998ms | 3423ms | 59ms | 3rd |
| https://www.sverigesradio.se/ | 2682ms | 175ms | 100ms | 3rd |
| Unattributable | 602ms | 23ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKWVKG | 431ms | 362ms | 63ms | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/13yrbgsvg82k..js | 343ms | 335ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-K26VLQY50G&cx=c>m=4e64k1h2 | 280ms | 222ms | 54ms | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0l6_j_v3vshhu.js | 93ms | 3ms | 3ms | 3rd |
DJS BundlesAction50 scripts, 301 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-K26VLQY50G&cx=c>m=4e64k1h2 | 144 KB | 72 KB (50%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/07n-9ddzh-ma-.js | 130 KB | 59 KB (46%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKWVKG | 135 KB | 53 KB (39%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0zuka656lhy1w.js | 65 KB | 46 KB (71%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0o34-m04cu4-n.js | 39 KB | 27 KB (71%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0d5_2s944z5t3.js | 30 KB | 23 KB (79%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0i~b81~d03ntx.js | 38 KB | 22 KB (58%) | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/0x1zzhavq5vqr.js | 13 KB | — | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/05356l3ew4fs8.js | 24 KB | — | ✓ | 3rd |
| https://www.sverigesradio.se/_next/static/chunks/040suslocznxo.js | 15 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction99 resources · 2.7 MB · 301 KB savings availableFIX
~300.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 99 resources | 2.7 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
max-age=0, no-cache, no-store
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization19 images, 0 KB saveablePASS
A+Font Loading11 fonts (411 KB)PASS
Web fonts
11
411 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
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
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints12 hints, 0 missing preconnectsPASS
Current Resource Hints
12 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall99 requests over 6013msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.sverigesradio.se www.sverigesradio.se | Other | 3998ms | 130 KB | 46% | kr434/mo | Costly |
www.sverigesradio.se www.sverigesradio.se | Other | 2682ms | 162 KB | — | kr291/mo | Costly |
Unattributable Unattributable | Other | 602ms | 0 KB | — | kr65/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 431ms | 135 KB | 39% | kr47/mo | Costly |
www.sverigesradio.se www.sverigesradio.se | Other | 343ms | 9 KB | — | kr37/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 280ms | 144 KB | 50% | kr30/mo | Costly |
www.sverigesradio.se www.sverigesradio.se | Other | 93ms | 9 KB | — | kr10/mo | Optional |
These scripts may cost more than they're worth
- www.sverigesradio.se adds 3998ms and costs ~kr434/month
- www.sverigesradio.se adds 2682ms and costs ~kr291/month
- Unattributable adds 602ms and costs ~kr65/month
- Google Tag Manager adds 431ms and costs ~kr47/month
- www.sverigesradio.se adds 343ms and costs ~kr37/month
- Google Tag Manager adds 280ms and costs ~kr30/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.sverigesradio.se takes 3998ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.sverigesradio.se takes 2682ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 602ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 431ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.sverigesradio.se takes 343ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 280ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev