https://www.climeup.ai
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
88
GRADE
B
FIX
2
REVIEW
7
PASS
14
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
81
86
81
58
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.15 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.27 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
720 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.17 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.
8.49 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
2614 PASS 7 REVIEW 2 FIX
DJS Execution CostAction3099ms total JS executionFIX
JS Execution Cost
Action3099ms total JS execution
3099ms total JS execution
Warning::
https://www.climeup.ai/_next/static/chunks/684-f77...: 846ms CPU time
Warning::
https://js-na2.hs-analytics.net/analytics/17828883...: 595ms CPU time
Warning::
https://www.climeup.ai/en: 481ms CPU time
Warning::
Unattributable: 473ms CPU time
Info::
https://www.climeup.ai/_next/static/chunks/157-d6e...: 191ms CPU time
Info::
Third-party scripts: 652ms (21% of total)
Main Thread Breakdown
Script Evaluation 58% Other 17% Style & Layout 12% Script Parsing & Compilation 6% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.climeup.ai/_next/static/chunks/684-f776693e7bb17703.js | 846ms | 789ms | 19ms | 1st |
| https://js-na2.hs-analytics.net/analytics/1782888300000/245100027.js | 595ms | 467ms | 8ms | 3rd |
| https://www.climeup.ai/en | 481ms | 19ms | 15ms | 1st |
| Unattributable | 473ms | 16ms | 0ms | 1st |
| https://www.climeup.ai/_next/static/chunks/157-d6edf7e5a065c80f.js | 191ms | 175ms | 16ms | 1st |
| https://www.climeup.ai/_next/static/chunks/159-9d372c87baf92a59.js | 173ms | 144ms | 28ms | 1st |
| https://www.climeup.ai/_next/static/chunks/609-58e5394563876376.js | 110ms | 40ms | 8ms | 1st |
| https://www.climeup.ai/_next/static/chunks/702.9027cd97cf58af36.js | 94ms | 74ms | 20ms | 1st |
| https://www.climeup.ai/_next/static/chunks/4bd1b696-0c82f6e4788d24ff.js | 78ms | 35ms | 31ms | 1st |
| https://snap.licdn.com/li.lms-analytics/insight.old.min.js | 58ms | 49ms | 4ms | 3rd |
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.
BPage Weight Budget1.1 MB transferred, 61 requestsREVIEW
Page Weight Budget
1.1 MB transferred, 61 requests
1.1 MB transferred, 61 requests
Info::
Page weighs 2.8 MB (1.1 MB transferred)
Warning::
JavaScript is 627 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 627 KB
Info::
61 HTTP requests
Info::
Estimated 0.23 g CO2 per page load
1.1 MB transferred
61 requests
0.23 g CO2 per page load
JavaScript 627.5 KiB 56%
Other 300.6 KiB 27%
Images 104.9 KiB 9%
Fonts 39.2 KiB 4%
HTML 32.1 KiB 3%
CSS 10.0 KiB 1%
Other 3.4 KiB 0%
Other 1.1 KiB 0%
0 2.4 MB 4.9 MB
Under budget
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
BImage Optimization16 images, 0 KB saveableREVIEW
Image Optimization
16 images, 0 KB saveable
16 images, 0 KB saveable
Info::
All images are well-optimized
16 images 105 KB
0 oversized -0 KB
5 legacy format
0 missing dimensions CLS risk
CJS BundlesAction30 scripts, 177 KB unusedREVIEW
JS Bundles
Action30 scripts, 177 KB unused
30 scripts, 177 KB unused
Warning::
https://www.climeup.ai/_next/static/chunks/159-9d3...: 79 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.climeup.ai/_next/static/chunks/702.902...: 54 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.climeup.ai/_next/static/chunks/157-d6e...: 24 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.climeup.ai/_next/static/chunks/609-58e...: 20 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 177 KB
177 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.climeup.ai/_next/static/chunks/159-9d372c87baf92a59.js | 100 KB | 79 KB (79%) | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/702.9027cd97cf58af36.js | 69 KB | 54 KB (79%) | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/157-d6edf7e5a065c80f.js | 64 KB | 24 KB (37%) | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/609-58e5394563876376.js | 38 KB | 20 KB (54%) | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/app/%5Blang%5D/page-cd59a9bbe80fbc41.js | 12 KB | — | ✓ | 1st |
| https://snap.licdn.com/li.lms-analytics/insight.old.min.js | 18 KB | — | ✓ | 3rd |
| https://www.climeup.ai/_next/static/chunks/154-857eb4ba8846583d.js | 2 KB | — | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/webpack-9d0b4ce46756d30d.js | 2 KB | — | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/344-97cdf743bf82c459.js | 3 KB | — | ✓ | 1st |
| https://www.climeup.ai/_next/static/chunks/407-6125bfafc520b420.js | 20 KB | — | ✓ | 1st |
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
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
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
Main response served uncompressed
Info::
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.
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.
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.
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
AThird-Party Impact37% third-party, 0 ms blockingPASS
Third-Party Impact
37% third-party, 0 ms blocking
37% third-party, 0 ms blocking
Info::
Third-party code accounts for 37% of page weight (409.5 KiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
63%
37%
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+Font Loading2 fonts (39 KB)PASS
Font Loading
2 fonts (39 KB)
2 fonts (39 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
39 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
AvenirLTStd-Roman.otf otf swap
Size 20 KB
Load time 201 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
AvenirLTStd-Book.otf otf swap
Size 20 KB
Load time 198 ms
Start 1.0 s
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 ~12 KB and ~24 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 Hints5 hints, 0 missing preconnectsPASS
Resource Hints
5 hints, 0 missing preconnects
5 hints, 0 missing preconnects
Info::
Page uses 5 resource hint(s)
Current Resource Hints
preconnect—
preload 5
dns-prefetch—
prefetch—
5 resource hints configured
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+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 Intelligence1 server-response signal(s) detectedPASS
Server Response Intelligence
1 server-response signal(s) detected
1 server-response signal(s) detected
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+Page Weight Inventory61 resources · 1.1 MB · 177 KB savings availablePASS
Page Weight Inventory
61 resources · 1.1 MB · 177 KB savings available
61 resources · 1.1 MB · 177 KB savings available
Warning::
Page weight 1.1 MB exceeds 1 MB target by 95 KB
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~177 KB of savings available
Info::
13 third-party resources (37% of weight)
Info::
1 resources over 200KB
61 resources · 1.1 MiB · 13 third-party 94.7 KiB over 1MB target
JavaScript 56% · 627.5 KiB
Other 27% · 303.9 KiB
Image 9% · 106.0 KiB
Font 4% · 39.2 KiB
Document 3% · 32.1 KiB
CSS 1% · 10.0 KiB
~177.1 KiB of savings available
Remove unused JavaScript: 177.1 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 61 resources | 1.1 MiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
1 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.
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
CSS Performance Depth
No CSS performance depth issues detected
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall61 requests over 3713msINFO
Network Waterfall
61 requests over 3713ms
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
21% of JavaScript execution is third-party
First-party Third-party 652ms · 61KB · €7/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
js-na2.hs-analytics.net js-na2.hs-analytics.net | Other | 595ms | 43 KB | — | €6/mo | Costly |
LinkedIn Insight snap.licdn.com | Advertising | 58ms | 18 KB | — | €1/mo | Optional |
js-na2.hs-analytics.net
Other
Execution 595ms
Transfer 43 KB
Monthly Cost €6/mo
LinkedIn Insight
Advertising
Execution 58ms
Transfer 18 KB
Monthly Cost €1/mo
These scripts may cost more than they're worth
- js-na2.hs-analytics.net adds 595ms and costs ~€6/month
js-na2.hs-analytics.net takes 595ms 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
Image Optimization36 images, 114 KB total, 0 KB wastedINFO
Image Optimization
36 images, 114 KB total, 0 KB wasted
Image Optimization Audit
Total Images
36
Total Size
114 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.