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https://www.backblaze.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
4
REVIEW
1
PASS
9
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
28
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

10.72 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

28.39 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.72 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.044

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

10.72 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.

28.51 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 s
Checks
16
9 PASS 1 REVIEW 4 FIX
F
Page Weight Budget
Action
5.2 MB transferred, 87 requests
FIX
5.2 MB transferred, 87 requests
Critical::
Page weighs 10.7 MB (5.2 MB transferred)
Warning::
JavaScript is 2.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.6 MB
Info::
Fonts are 1.1 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.1 MB
Info::
87 HTTP requests
Info::
Estimated 1.1 g CO2 per page load
5.2 MB / 2.4 MB budget
5.2 MB transferred
87 requests
1.1 g CO2 per page load
JavaScript 2.6 MiB 51%
Fonts 1.1 MiB 21%
Other 708.9 KiB 13%
Images 534.1 KiB 10%
CSS 93.5 KiB 2%
Other 86.4 KiB 2%
HTML 46.5 KiB 1%
Other 3.2 KiB 0%
Other 1.2 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

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

D
Third-Party Impact
Action
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (5.1 MiB of 5.2 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
F
JS Execution Cost
Action
6142ms total JS execution
FIX
6142ms total JS execution
Warning::
Unattributable: 1202ms CPU time
Warning::
https://ob.df1.backblaze.com/i/97c5d149fbecccd7dc7...: 824ms CPU time
Warning::
https://js.qualified.com/qualified.js?token=zhPjbc...: 750ms CPU time
Warning::
https://cdn.cookielaw.org/scripttemplates/202601.2...: 428ms CPU time
Warning::
https://www.backblaze.com/: 416ms CPU time
Warning::
Third-party scripts: 5726ms (93% of total)

Main Thread Breakdown

Script Evaluation 49% Other 23% Style & Layout 13% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
Unattributable1202ms192ms0ms3rd
https://ob.df1.backblaze.com/i/97c5d149fbecccd7dc763df5144f84d6.js824ms571ms11ms3rd
https://js.qualified.com/qualified.js?token=zhPjbcqdXS74bK3y750ms484ms239ms3rd
https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js428ms304ms54ms3rd
https://www.backblaze.com/416ms98ms21ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-N9N283379ms311ms57ms3rd
https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/js/backblaze-staging.ce45de3f.db45d0c98cc79119.js377ms44ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-KKNKYMVB92&cx=c&gtm=4e6460344ms288ms53ms3rd
https://cdnjs.cloudflare.com/ajax/libs/gsap/3.12.5/ScrollTrigger.min.js297ms80ms5ms3rd
https://cdnjs.cloudflare.com/ajax/libs/gsap/3.12.5/gsap.min.js262ms54ms8ms3rd

Showing top 10 of 16 scripts

F
JS Bundles
Action
20 scripts, 1.0 MB unused
FIX
20 scripts, 1.0 MB unused
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 573 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://js.qualified.com/qualified.js?token=zhPjbc...: 268 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-N9N...: 77 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202601.2...: 68 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-KKNK...: 67 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.0 MB
1075 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js852 KB573 KB (67%)✓3rd
https://js.qualified.com/qualified.js?token=zhPjbcqdXS74bK3y370 KB268 KB (73%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N9N283172 KB77 KB (45%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js128 KB68 KB (53%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-KKNKYMVB92&cx=c&gtm=4e6460165 KB67 KB (40%)✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js30 KB23 KB (76%)✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js9 KB—✓3rd
https://www.google.com/recaptcha/api.js1 KB—✓3rd
https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/js/backblaze-staging.schunk.a587b29c739e8999.js21 KB—✓3rd
https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/js/backblaze-staging.ce45de3f.db45d0c98cc79119.js1 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

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
Image Optimization
Action
21 images, 0 KB saveable
REVIEW
21 images, 0 KB saveable
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.prod.website-files.com/63d32de856f6323... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
21 images 534 KB
0 oversized -0 KB
15 legacy format
7 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
17 fonts (1101 KB)
PASS
17 fonts (1101 KB)
Info::
17 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

17

1101 KB total

Render-blocking

0

of 17

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s FCP 10.7 s LCP 28.4 shttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d7141fcc43a406322047f_DMSans-Regular.ttf652d7141fcc43a406322047... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d7141fcc43a406322047f_DMSans-Regular.ttf — 55.5 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d71826bda5c056b207030_DMSans-Bold.ttf652d71826bda5c056b20703... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d71826bda5c056b207030_DMSans-Bold.ttf — 55.5 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e6272951397572c8c34_SpaceGrotesk-Medium.woff2668e9e6272951397572c8c3... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e6272951397572c8c34_SpaceGrotesk-Medium.woff2 — 35.1 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d71790f0d072b7e7416f0_DMSans-Medium.ttf652d71790f0d072b7e7416f... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/652d71790f0d072b7e7416f0_DMSans-Medium.ttf — 55.6 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e6229faa18170c639e2_SpaceGrotesk-SemiBold.woff2668e9e6229faa18170c639e... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e6229faa18170c639e2_SpaceGrotesk-SemiBold.woff2 — 35.4 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/68702542f51f86a4b411d0bb_fa-light-300.woff268702542f51f86a4b411d0b... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/68702542f51f86a4b411d0bb_fa-light-300.woff2 — 455.1 KiB — 0 ms — font-display: swaphttps://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e62338ae31dcfe712bd_SpaceGrotesk-Regular.woff2668e9e62338ae31dcfe712b... https://cdn.prod.website-files.com/63d32de856f6323a43a277f2/668e9e62338ae31dcfe712bd_SpaceGrotesk-Regular.woff2 — 34.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/oswald/v57/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2TK3iWkUHHAIjg752GT8Gl-1... https://fonts.gstatic.com/s/oswald/v57/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2 — 27.8 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/inconsolata/v37/QlddNThLqRwH-OJ1UHjlKENVzkWGVkL3GZQmAwLyya15IDhunA.woff2QlddNThLqRwH-OJ1UHjlKEN... https://fonts.gstatic.com/s/inconsolata/v37/QlddNThLqRwH-OJ1UHjlKENVzkWGVkL3GZQmAwLyya15IDhunA.woff2 — 28.4 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2JTUSjIg1_i6t8kCHKm459Wl... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 34.7 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/montserrat/v31/JTUQjIg1_i6t8kCHKm459WxRyS7m0dR9pA.woff2JTUQjIg1_i6t8kCHKm459Wx... https://fonts.gstatic.com/s/montserrat/v31/JTUQjIg1_i6t8kCHKm459WxRyS7m0dR9pA.woff2 — 36.3 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/ptsans/v18/jizaRExUiTo99u79D0KExcOPIDU.woff2jizaRExUiTo99u79D0KExcO... https://fonts.gstatic.com/s/ptsans/v18/jizaRExUiTo99u79D0KExcOPIDU.woff2 — 11.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/ptsans/v18/jizYRExUiTo99u79D0e0x8mIAjcQ-w.woff2jizYRExUiTo99u79D0e0x8m... https://fonts.gstatic.com/s/ptsans/v18/jizYRExUiTo99u79D0e0x8mIAjcQ-w.woff2 — 11.9 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/ptsans/v18/jizfRExUiTo99u79B_mh0O6tLR8a8zI.woff2jizfRExUiTo99u79B_mh0O6... https://fonts.gstatic.com/s/ptsans/v18/jizfRExUiTo99u79B_mh0O6tLR8a8zI.woff2 — 11.4 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/ptsans/v18/jizdRExUiTo99u79D0e8fOydLxUd0TA7iw.woff2jizdRExUiTo99u79D0e8fOy... https://fonts.gstatic.com/s/ptsans/v18/jizdRExUiTo99u79D0e8fOydLxUd0TA7iw.woff2 — 12.1 KiB — 0 ms — font-display: swaphttps://assets.qualified.com/packs/media/Inter-Regular.f1f0c35b.woff2Inter-Regular.f1f0c35b.... https://assets.qualified.com/packs/media/Inter-Regular.f1f0c35b.woff2 — 96.9 KiB — 0 ms — font-display: swaphttps://assets.qualified.com/packs/media/Inter-SemiBold.fcb100c7.woff2Inter-SemiBold.fcb100c7... https://assets.qualified.com/packs/media/Inter-SemiBold.fcb100c7.woff2 — 103.9 KiB — 0 ms — font-display: swap
652d7141fcc43a406322047... ttf swap
Size 56 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
652d71826bda5c056b20703... ttf swap
Size 55 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
668e9e6272951397572c8c3... woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
652d71790f0d072b7e7416f... ttf swap
Size 56 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
668e9e6229faa18170c639e... woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
68702542f51f86a4b411d0b... woff2 swap
Size 455 KB
Load time 0 ms
Start 0 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
668e9e62338ae31dcfe712b... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
TK3iWkUHHAIjg752GT8Gl-1... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
QlddNThLqRwH-OJ1UHjlKEN... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
JTUSjIg1_i6t8kCHKm459Wl... woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
JTUQjIg1_i6t8kCHKm459Wx... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
jizaRExUiTo99u79D0KExcO... woff2 swap
Size 11 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
jizYRExUiTo99u79D0e0x8m... woff2 swap
Size 12 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
jizfRExUiTo99u79B_mh0O6... woff2 swap
Size 11 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
jizdRExUiTo99u79D0e8fOy... woff2 swap
Size 12 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inter-Regular.f1f0c35b.... woff2 swap
Size 97 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inter-SemiBold.fcb100c7... woff2 swap
Size 104 KB
Load time 0 ms
Start 0 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
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 ~329 KB and ~658 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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
3
preload
—
dns-prefetch
—
prefetch
—

3 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

A+
HTTP Caching
max-age=14400 (4 hours)
PASS
max-age=14400 (4 hours)
Info::
Cache-Control header is set
Got: max-age=14400
Info::
Effective TTL: 4 hours (max-age=14400)
Info::
Last-Modified header present
Cache-Control

max-age=14400

DirectiveValueMeaning
max-age14400Cache for 4 hours
Effective TTL: 14400 seconds
Network Waterfall
87 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
93% of JavaScript execution is third-party
First-party Third-party 5726ms · 1870KB · €92/mo
Unattributable
Other
Costly
Execution 1202ms
Transfer 0 KB
Monthly Cost €19/mo
ob.df1.backblaze.com
Other
Costly
Execution 824ms
Transfer 45 KB
Monthly Cost €13/mo
js.qualified.com
Other
Costly
Execution 750ms
Transfer 370 KB
Unused 73%
Monthly Cost €12/mo
OneTrust
Consent
Essential
Execution 428ms
Transfer 128 KB
Unused 53%
Monthly Cost €7/mo
Google Tag Manager
Tag Manager
Costly
Execution 379ms
Transfer 172 KB
Unused 45%
Monthly Cost €6/mo
cdn.prod.website-files.com
Other
Costly
Execution 377ms
Transfer 1 KB
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 344ms
Transfer 165 KB
Unused 40%
Monthly Cost €6/mo
cdnjs
CDN
Costly
Execution 297ms
Transfer 16 KB
Monthly Cost €5/mo
cdnjs
CDN
Costly
Execution 262ms
Transfer 26 KB
Monthly Cost €4/mo
obs.df1.backblaze.com
Other
Costly
Execution 241ms
Transfer 2 KB
Monthly Cost €4/mo
www.gstatic.com
Other
Costly
Execution 232ms
Transfer 852 KB
Unused 67%
Monthly Cost €4/mo
d3e54v103j8qbb.cloudfront.net
Other
Optional
Execution 193ms
Transfer 30 KB
Monthly Cost €3/mo
cdn.prod.website-files.com
Other
Optional
Execution 86ms
Transfer 21 KB
Monthly Cost €1/mo
cdn.schemaapp.com
Other
Optional
Execution 56ms
Transfer 12 KB
Monthly Cost €1/mo
ajax.googleapis.com
Other
Optional
Execution 55ms
Transfer 30 KB
Unused 76%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 1202ms and costs ~€19/month
  • ob.df1.backblaze.com adds 824ms and costs ~€13/month
  • js.qualified.com adds 750ms and costs ~€12/month
  • Google Tag Manager adds 379ms and costs ~€6/month
  • cdn.prod.website-files.com adds 377ms and costs ~€6/month
  • Google Tag Manager adds 344ms and costs ~€6/month
  • cdnjs adds 297ms and costs ~€5/month
  • cdnjs adds 262ms and costs ~€4/month
  • obs.df1.backblaze.com adds 241ms and costs ~€4/month
  • www.gstatic.com adds 232ms and costs ~€4/month

93% 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

Unattributable takes 1202ms 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

ob.df1.backblaze.com takes 824ms 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

js.qualified.com takes 750ms 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

73% of js.qualified.com'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

53% of OneTrust'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

Google Tag Manager takes 379ms 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

cdn.prod.website-files.com takes 377ms 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

Google Tag Manager takes 344ms 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

cdnjs takes 297ms 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

cdnjs takes 262ms 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

obs.df1.backblaze.com takes 241ms 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.gstatic.com takes 232ms 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

67% of www.gstatic.com'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

76% of ajax.googleapis.com'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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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