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.
1.55 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.06 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
852 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.99 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.
13.60 s
Page Load Progression
FPage Weight BudgetAction53.6 MB transferred, 143 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction97% third-party, 0 ms blockingFIX
FJS Execution CostAction9070ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://runwayml.com/_next/static/chunks/0ledoq32j-tgt.js | 2627ms | 2170ms | 17ms | 1st |
| https://runwayml.com/_next/static/chunks/0myp8_w7p4xh6.js | 2109ms | 1476ms | 18ms | 1st |
| Unattributable | 1469ms | 24ms | 0ms | 3rd |
| https://runwayml.com/_next/static/chunks/0qiaxt.2.29yk.js | 1069ms | 88ms | 4ms | 1st |
| https://runwayml.com/ | 695ms | 24ms | 29ms | 1st |
| https://runwayml.com/_next/static/chunks/0xpd-xrr3y_pf.js | 515ms | 215ms | 44ms | 1st |
| https://runwayml.com/_next/static/chunks/0gyhlsobr-.-~.js | 237ms | 155ms | 9ms | 1st |
| https://runwayml.com/_next/static/chunks/turbopack-0iqf3izzw_rl7.js | 154ms | 153ms | 2ms | 1st |
| https://runwayml.com/_next/static/chunks/0g6yms6jnm07o.js | 107ms | 27ms | 5ms | 1st |
| https://runwayml.com/_next/static/chunks/0w76rigx_5eex.js | 88ms | 81ms | 6ms | 1st |
DJS BundlesAction34 scripts, 301 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://runwayml.com/_next/static/chunks/0xpd-xrr3y_pf.js | 159 KB | 82 KB (52%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/14bal68owfvkv.js | 70 KB | 68 KB (100%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/0mqn2.5ne7f_4.js | 70 KB | 47 KB (70%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/11nkv--wmqzbq.js | 33 KB | 31 KB (100%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/0citri0kt-0oi.js | 46 KB | 25 KB (58%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/0nq0q52o0ztd5.js | 28 KB | 25 KB (100%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/0myp8_w7p4xh6.js | 75 KB | 24 KB (33%) | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/0tual4rlaudmv.js | 12 KB | — | ✓ | 1st |
| https://runwayml.com/_vercel/insights/script.js | 2 KB | — | ✓ | 1st |
| https://runwayml.com/_next/static/chunks/053dhicmd0t_o.js | 15 KB | — | ✓ | 1st |
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 InventoryAction143 resources · 53.6 MB · 301 KB savings availableFIX
~301.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 143 resources | 53.6 MiB | ||||||
BImage Optimization22 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (231 KB)PASS
Web fonts
4
231 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~12 KB and ~24 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints21 hints, 0 missing preconnectsPASS
Current Resource Hints
21 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall143 requests over 2191msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1469ms | 0 KB | — | €23/mo | Costly |
These scripts may cost more than they're worth
- Unattributable adds 1469ms and costs ~€23/month
Unattributable takes 1469ms 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