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https://mailinabox.email

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
5
PASS
6
INFO
2

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

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
59
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.
82
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.

662 ms

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

1.38 s

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

0 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.

1.00 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.

1.38 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
15
6 PASS 5 REVIEW 2 FIX
D
Page Weight Inventory
Action
34 resources · 2.0 MB · 219 KB savings available
FIX
34 resources · 2.0 MB · 219 KB savings available
Warning::
Page weight 1.0 MB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~219 KB of savings available
Warning::
16 third-party resources (50% of weight)
Info::
1 resources over 200KB
34 resources · 2.0 MiB · 16 third-party 1.0 MiB over 1MB target
JavaScript 52% · 1.1 MiB
Image 20% · 413.3 KiB
CSS 13% · 262.8 KiB
Font 7% · 149.5 KiB
Other 5% · 113.9 KiB
Document 3% · 66.8 KiB

~218.5 KiB of savings available

Remove unused JavaScript: 218.5 KiB
D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
2.0 MB transferred, 34 requests
REVIEW
2.0 MB transferred, 34 requests
Info::
Page weighs 4.7 MB (2.0 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Info::
CSS is 263 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 263 KB
Info::
34 HTTP requests
Info::
Estimated 0.43 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
34 requests
0.43 g CO2 per page load
JavaScript 1.1 MiB 52%
Images 404.2 KiB 19%
CSS 262.8 KiB 13%
Fonts 149.5 KiB 7%
Other 113.9 KiB 5%
HTML 62.8 KiB 3%
Other 12.3 KiB 1%
Other 732 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

B
Third-Party Impact
50% third-party, 0 ms blocking
REVIEW
50% third-party, 0 ms blocking
Info::
Third-party code accounts for 50% of page weight (1.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
50%
50%
First-party Third-party
C
Image Optimization
Action
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://mailinabox.email/static/logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://mailinabox.email/static/roundcube.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://mailinabox.email/static/nextcloud_contacts... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://mailinabox.email/static/control_panel.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 404 KB
0 oversized -0 KB
8 legacy format
4 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

C
JS Bundles
Action
7 scripts, 219 KB unused
REVIEW
7 scripts, 219 KB unused
Warning::
https://mailinabox.email/static/vendor/d3.js: 122 KB unused (85%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mailinabox.email/static/vendor/bootstrap/j...: 50 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://mailinabox.email/static/vendor/jquery.js: 46 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 219 KB
219 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://mailinabox.email/static/vendor/d3.js143 KB122 KB (85%)✓1st
https://mailinabox.email/static/vendor/bootstrap/js/bootstrap.min.js62 KB50 KB (81%)✓1st
https://mailinabox.email/static/vendor/jquery.js86 KB46 KB (54%)✓1st
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=root,base192 KB—✓3rd
https://www.youtube-nocookie.com/s/player/b174a5bb/player_embed_es6.vflset/en_US/base.js434 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/exm=base,root/ed=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=r78Drb143 KB—✓3rd
https://www.google.com/js/th/cdHZnmAh7yL5wO3Dlc3wxOFdaDuUvCTre1L4S51GVXg.js23 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
JS Execution Cost
290ms total JS execution
PASS
290ms total JS execution
Info::
https://mailinabox.email/: 134ms CPU time
Info::
Unattributable: 85ms CPU time
Info::
https://mailinabox.email/static/vendor/jquery.js: 71ms CPU time
Info::
Third-party scripts: 85ms (29% of total)

Main Thread Breakdown

Style & Layout 30% Other 30% Script Evaluation 23% Script Parsing & Compilation 6% Rendering 5% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://mailinabox.email/134ms2ms1ms1st
Unattributable85ms2ms0ms3rd
https://mailinabox.email/static/vendor/jquery.js71ms57ms5ms1st
A+
Font Loading
6 fonts (149 KB)
PASS
6 fonts (149 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

149 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 662 ms LCP 1.4 shttps://mailinabox.email/static/vendor/Ubuntu_300.woffUbuntu_300.woff https://mailinabox.email/static/vendor/Ubuntu_300.woff — 43.1 KiB — 20 ms — font-display: swaphttps://mailinabox.email/static/vendor/Raleway_400.woffRaleway_400.woff https://mailinabox.email/static/vendor/Raleway_400.woff — 25.4 KiB — 26 ms — font-display: swaphttps://mailinabox.email/static/fontello/font/fontello.woff?40902527fontello.woff https://mailinabox.email/static/fontello/font/fontello.woff?40902527 — 4.2 KiB — 30 ms — font-display: swaphttps://mailinabox.email/static/vendor/Raleway_700.woffRaleway_700.woff https://mailinabox.email/static/vendor/Raleway_700.woff — 25.7 KiB — 34 ms — font-display: swaphttps://mailinabox.email/static/vendor/Source_Code_Pro_500.woffSource_Code_Pro_500.woff https://mailinabox.email/static/vendor/Source_Code_Pro_500.woff — 17.2 KiB — 37 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 21 ms — font-display: swap
Ubuntu_300.woff woff swap
Size 43 KB
Load time 20 ms
Start 216 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Raleway_400.woff woff swap
Size 25 KB
Load time 26 ms
Start 217 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fontello.woff woff swap
Size 4 KB
Load time 30 ms
Start 217 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Raleway_700.woff woff swap
Size 26 KB
Load time 34 ms
Start 218 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Source_Code_Pro_500.woff woff swap
Size 17 KB
Load time 37 ms
Start 218 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 21 ms
Start 331 ms
Risk FOUT — 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 ~35 KB and ~70 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
34 requests over 1768ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 662 ms LCP 1.4 shttps://mailinabox.email// https://mailinabox.email/ — 200 — 8.3 KiB — 37 ms — h2https://mailinabox.email/static/vendor/bootstrap/css/bootstrap.min.css/static/vendor/bootstrap/css/bootst... https://mailinabox.email/static/vendor/bootstrap/css/bootstrap.min.css — 200 — 158.0 KiB — 61 ms — h2https://mailinabox.email/static/fontello/css/fontello.css/static/fontello/css/fontello.css https://mailinabox.email/static/fontello/css/fontello.css — 200 — 2.1 KiB — 45 ms — h2https://mailinabox.email/static/vendor/google-fonts.css/static/vendor/google-fonts.css https://mailinabox.email/static/vendor/google-fonts.css — 200 — 1.6 KiB — 45 ms — h2https://github.com/usecue/fork-me-on-github-svg-ribbons/raw/master/images/forkme_right_red_aa0000.svggithub.com/usecue/fork-me-on-github... https://github.com/usecue/fork-me-on-github-svg-ribbons/raw/master/images/forkme_right_red_aa0000.svg — 302 — 4.0 KiB — 71 ms — h2https://mailinabox.email/static/logo.png/static/logo.png https://mailinabox.email/static/logo.png — 200 — 19.2 KiB — 48 ms — h2https://mailinabox.email/static/roundcube.png/static/roundcube.png https://mailinabox.email/static/roundcube.png — 200 — 168.2 KiB — 86 ms — h2https://mailinabox.email/static/nextcloud_contacts.png/static/nextcloud_contacts.png https://mailinabox.email/static/nextcloud_contacts.png — 200 — 58.3 KiB — 71 ms — h2https://mailinabox.email/static/control_panel.png/static/control_panel.png https://mailinabox.email/static/control_panel.png — 200 — 105.5 KiB — 83 ms — h2https://mailinabox.email/static/vendor/jquery.js/static/vendor/jquery.js https://mailinabox.email/static/vendor/jquery.js — 200 — 86.3 KiB — 48 ms — h2https://mailinabox.email/static/vendor/bootstrap/js/bootstrap.min.js/static/vendor/bootstrap/js/bootstr... https://mailinabox.email/static/vendor/bootstrap/js/bootstrap.min.js — 200 — 62.2 KiB — 76 ms — h2https://mailinabox.email/static/vendor/d3.js/static/vendor/d3.js https://mailinabox.email/static/vendor/d3.js — 200 — 143.4 KiB — 83 ms — h2https://www.youtube-nocookie.com/embed/9WOmkoEYMIgwww.youtube-nocookie.com/embed/9WOm... https://www.youtube-nocookie.com/embed/9WOmkoEYMIg — 200 — 54.5 KiB — 295 ms — h2https://raw.githubusercontent.com/usecue/fork-me-on-github-svg-ribbons/master/images/forkme_right_red_aa0000.svgraw.githubusercontent.com/usecue/fo... https://raw.githubusercontent.com/usecue/fork-me-on-github-svg-ribbons/master/images/forkme_right_red_aa0000.svg — 200 — 4.4 KiB — 24 ms — h2https://mailinabox.email/static/vendor/Ubuntu_300.woff/static/vendor/Ubuntu_300.woff https://mailinabox.email/static/vendor/Ubuntu_300.woff — 200 — 43.1 KiB — 20 ms — h2https://mailinabox.email/static/vendor/Raleway_400.woff/static/vendor/Raleway_400.woff https://mailinabox.email/static/vendor/Raleway_400.woff — 200 — 25.4 KiB — 26 ms — h2https://mailinabox.email/static/fontello/font/fontello.woff?40902527/static/fontello/font/fontello.woff... https://mailinabox.email/static/fontello/font/fontello.woff?40902527 — 200 — 4.2 KiB — 30 ms — h2https://mailinabox.email/static/vendor/Raleway_700.woff/static/vendor/Raleway_700.woff https://mailinabox.email/static/vendor/Raleway_700.woff — 200 — 25.7 KiB — 34 ms — h2https://mailinabox.email/static/vendor/Source_Code_Pro_500.woff/static/vendor/Source_Code_Pro_500.... https://mailinabox.email/static/vendor/Source_Code_Pro_500.woff — 200 — 17.2 KiB — 37 ms — h2https://www.youtube-nocookie.com/s/player/b174a5bb/www-player.csswww.youtube-nocookie.com/s/player/b... https://www.youtube-nocookie.com/s/player/b174a5bb/www-player.css — 200 — 56.9 KiB — 52 ms — h2https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.96kYDM0ul3E.L.W.O/am=AAAAAQ/d=0/br=1/rs=AGKMywFWBSz5crD2wF9NvEJnkKN-Cx4j7gwww.youtube.com/s/_/ytembeds/_/ss/k... https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.96kYDM0ul3E.L.W.O/am=AAAAAQ/d=0/br=1/rs=AGKMywFWBSz5crD2wF9NvEJnkKN-Cx4j7g — 200 — 44.2 KiB — 56 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=root,basewww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=root,base — 200 — 192.3 KiB — 87 ms — h2https://www.youtube-nocookie.com/s/player/b174a5bb/player_embed_es6.vflset/en_US/base.jswww.youtube-nocookie.com/s/player/b... https://www.youtube-nocookie.com/s/player/b174a5bb/player_embed_es6.vflset/en_US/base.js — 200 — 434.3 KiB — 91 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 21 ms — h3https://mailinabox.email/install-stats.json/install-stats.json https://mailinabox.email/install-stats.json — 200 — 113.6 KiB — 44 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/exm=base,root/ed=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=r78Drbwww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/exm=base,root/ed=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=r78Drb — 200 — 143.3 KiB — 15 ms — h2https://i.ytimg.com/vi/9WOmkoEYMIg/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGwgbChsMA8=&rs=AOn4CLDvgWHPl7zvknqZXmXofHxWnTBblwi.ytimg.com/vi/9WOmkoEYMIg/sddefaul... https://i.ytimg.com/vi/9WOmkoEYMIg/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGwgbChsMA8=&rs=AOn4CLDvgWHPl7zvknqZXmXofHxWnTBblw — 200 — 44.2 KiB — 13 ms — h2https://yt3.ggpht.com/ytc/AIdro_mSFwqiIoS8ldplnKgzk2q8ZgM94RkQSkInfxamrshgWZc=s68-c-k-c0x00ffffff-no-rjyt3.ggpht.com/ytc/AIdro_mSFwqiIoS8l... https://yt3.ggpht.com/ytc/AIdro_mSFwqiIoS8ldplnKgzk2q8ZgM94RkQSkInfxamrshgWZc=s68-c-k-c0x00ffffff-no-rj — 200 — 4.3 KiB — 16 ms — h2https://www.gstatic.com/youtube/img/icons/mweb/youtube_fill/logo/v2/67px.svgwww.gstatic.com/youtube/img/icons/m... https://www.gstatic.com/youtube/img/icons/mweb/youtube_fill/logo/v2/67px.svg — 200 — 732 B — 19 ms — h2https://mailinabox.email/static/logo_small.png/static/logo_small.png https://mailinabox.email/static/logo_small.png — 200 — 8.3 KiB — 11 ms — h2
0 ms 500 ms 1.0 s 1.5 s FCP 662 ms LCP 1.4 shttps://mailinabox.email// https://mailinabox.email/ — 200 — 8.3 KiB — 37 ms — h2https://mailinabox.email/static/vendor/bootstrap/css/bootstrap.min.css/static/vendor/bootstrap/css/bootst... https://mailinabox.email/static/vendor/bootstrap/css/bootstrap.min.css — 200 — 158.0 KiB — 61 ms — h2https://mailinabox.email/static/fontello/css/fontello.css/static/fontello/css/fontello.css https://mailinabox.email/static/fontello/css/fontello.css — 200 — 2.1 KiB — 45 ms — h2https://mailinabox.email/static/vendor/google-fonts.css/static/vendor/google-fonts.css https://mailinabox.email/static/vendor/google-fonts.css — 200 — 1.6 KiB — 45 ms — h2https://github.com/usecue/fork-me-on-github-svg-ribbons/raw/master/images/forkme_right_red_aa0000.svggithub.com/usecue/fork-me-on-github... https://github.com/usecue/fork-me-on-github-svg-ribbons/raw/master/images/forkme_right_red_aa0000.svg — 302 — 4.0 KiB — 71 ms — h2https://mailinabox.email/static/logo.png/static/logo.png https://mailinabox.email/static/logo.png — 200 — 19.2 KiB — 48 ms — h2https://mailinabox.email/static/roundcube.png/static/roundcube.png https://mailinabox.email/static/roundcube.png — 200 — 168.2 KiB — 86 ms — h2https://mailinabox.email/static/nextcloud_contacts.png/static/nextcloud_contacts.png https://mailinabox.email/static/nextcloud_contacts.png — 200 — 58.3 KiB — 71 ms — h2https://mailinabox.email/static/control_panel.png/static/control_panel.png https://mailinabox.email/static/control_panel.png — 200 — 105.5 KiB — 83 ms — h2https://mailinabox.email/static/vendor/jquery.js/static/vendor/jquery.js https://mailinabox.email/static/vendor/jquery.js — 200 — 86.3 KiB — 48 ms — h2https://mailinabox.email/static/vendor/bootstrap/js/bootstrap.min.js/static/vendor/bootstrap/js/bootstr... https://mailinabox.email/static/vendor/bootstrap/js/bootstrap.min.js — 200 — 62.2 KiB — 76 ms — h2https://mailinabox.email/static/vendor/d3.js/static/vendor/d3.js https://mailinabox.email/static/vendor/d3.js — 200 — 143.4 KiB — 83 ms — h2https://www.youtube-nocookie.com/embed/9WOmkoEYMIgwww.youtube-nocookie.com/embed/9WOm... https://www.youtube-nocookie.com/embed/9WOmkoEYMIg — 200 — 54.5 KiB — 295 ms — h2https://raw.githubusercontent.com/usecue/fork-me-on-github-svg-ribbons/master/images/forkme_right_red_aa0000.svgraw.githubusercontent.com/usecue/fo... https://raw.githubusercontent.com/usecue/fork-me-on-github-svg-ribbons/master/images/forkme_right_red_aa0000.svg — 200 — 4.4 KiB — 24 ms — h2https://mailinabox.email/static/vendor/Ubuntu_300.woff/static/vendor/Ubuntu_300.woff https://mailinabox.email/static/vendor/Ubuntu_300.woff — 200 — 43.1 KiB — 20 ms — h2https://mailinabox.email/static/vendor/Raleway_400.woff/static/vendor/Raleway_400.woff https://mailinabox.email/static/vendor/Raleway_400.woff — 200 — 25.4 KiB — 26 ms — h2https://mailinabox.email/static/fontello/font/fontello.woff?40902527/static/fontello/font/fontello.woff... https://mailinabox.email/static/fontello/font/fontello.woff?40902527 — 200 — 4.2 KiB — 30 ms — h2https://mailinabox.email/static/vendor/Raleway_700.woff/static/vendor/Raleway_700.woff https://mailinabox.email/static/vendor/Raleway_700.woff — 200 — 25.7 KiB — 34 ms — h2https://mailinabox.email/static/vendor/Source_Code_Pro_500.woff/static/vendor/Source_Code_Pro_500.... https://mailinabox.email/static/vendor/Source_Code_Pro_500.woff — 200 — 17.2 KiB — 37 ms — h2https://www.youtube-nocookie.com/s/player/b174a5bb/www-player.csswww.youtube-nocookie.com/s/player/b... https://www.youtube-nocookie.com/s/player/b174a5bb/www-player.css — 200 — 56.9 KiB — 52 ms — h2https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.96kYDM0ul3E.L.W.O/am=AAAAAQ/d=0/br=1/rs=AGKMywFWBSz5crD2wF9NvEJnkKN-Cx4j7gwww.youtube.com/s/_/ytembeds/_/ss/k... https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.96kYDM0ul3E.L.W.O/am=AAAAAQ/d=0/br=1/rs=AGKMywFWBSz5crD2wF9NvEJnkKN-Cx4j7g — 200 — 44.2 KiB — 56 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=root,basewww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=root,base — 200 — 192.3 KiB — 87 ms — h2https://www.youtube-nocookie.com/s/player/b174a5bb/player_embed_es6.vflset/en_US/base.jswww.youtube-nocookie.com/s/player/b... https://www.youtube-nocookie.com/s/player/b174a5bb/player_embed_es6.vflset/en_US/base.js — 200 — 434.3 KiB — 91 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 21 ms — h3https://mailinabox.email/install-stats.json/install-stats.json https://mailinabox.email/install-stats.json — 200 — 113.6 KiB — 44 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/exm=base,root/ed=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=r78Drbwww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.mAyMrwD-maw.2021.O/am=AAAAAQ/d=1/exm=base,root/ed=1/br=1/rs=AGKMywEJ5XlAS0NHez-xp3iPAwsYYbtXNg/m=r78Drb — 200 — 143.3 KiB — 15 ms — h2https://i.ytimg.com/vi/9WOmkoEYMIg/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGwgbChsMA8=&rs=AOn4CLDvgWHPl7zvknqZXmXofHxWnTBblwi.ytimg.com/vi/9WOmkoEYMIg/sddefaul... https://i.ytimg.com/vi/9WOmkoEYMIg/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGwgbChsMA8=&rs=AOn4CLDvgWHPl7zvknqZXmXofHxWnTBblw — 200 — 44.2 KiB — 13 ms — h2https://yt3.ggpht.com/ytc/AIdro_mSFwqiIoS8ldplnKgzk2q8ZgM94RkQSkInfxamrshgWZc=s68-c-k-c0x00ffffff-no-rjyt3.ggpht.com/ytc/AIdro_mSFwqiIoS8l... https://yt3.ggpht.com/ytc/AIdro_mSFwqiIoS8ldplnKgzk2q8ZgM94RkQSkInfxamrshgWZc=s68-c-k-c0x00ffffff-no-rj — 200 — 4.3 KiB — 16 ms — h2https://www.gstatic.com/youtube/img/icons/mweb/youtube_fill/logo/v2/67px.svgwww.gstatic.com/youtube/img/icons/m... https://www.gstatic.com/youtube/img/icons/mweb/youtube_fill/logo/v2/67px.svg — 200 — 732 B — 19 ms — h2https://mailinabox.email/static/logo_small.png/static/logo_small.png https://mailinabox.email/static/logo_small.png — 200 — 8.3 KiB — 11 ms — h2https://www.google.com/js/th/cdHZnmAh7yL5wO3Dlc3wxOFdaDuUvCTre1L4S51GVXg.jswww.google.com/js/th/cdHZnmAh7yL5wO... https://www.google.com/js/th/cdHZnmAh7yL5wO3Dlc3wxOFdaDuUvCTre1L4S51GVXg.js — 200 — 23.1 KiB — 96 ms — h3https://www.youtube-nocookie.com/generate_204?LKIFJgwww.youtube-nocookie.com/generate_2... https://www.youtube-nocookie.com/generate_204?LKIFJg — 204 — 10 B — 7 ms — h3https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 0 B — 21 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 311 B — 37 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
29% of JavaScript execution is third-party
First-party Third-party 85ms · 0KB · £1/mo
Unattributable
Other
Optional
Execution 85ms
Transfer 0 KB
Monthly Cost £1/mo

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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