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https://bis.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
48
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
76
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.
92
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.

2.34 s

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

2.99 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.

0.536

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

2.53 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.

3.00 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
8 PASS 4 REVIEW 1 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (597.6 KiB of 597.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
C
Image Optimization
Action
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
https://www.bis.org/img/hl/ph_sp260825.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/hl/sh_qt2603b.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/hl/sh_p260316.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/bis-logo-short.gif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/ymabii/fsi.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/hl/ph_fsibriefs30.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/homepage/bcbs.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/homepage/bisihub.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/ymabii/vacancies.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.bis.org/img/ymabii/inno_hub.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 284 KB
0 oversized -0 KB
11 legacy format
10 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

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

B
JS Bundles
6 scripts, 111 KB unused
REVIEW
6 scripts, 111 KB unused
Warning::
https://www.bis.org/application-c64c47ced99e069e6a...: 81 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.matomo.cloud/bis.matomo.cloud/matomo.j...: 30 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 111 KB
111 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.js112 KB81 KB (72%)✓3rd
https://cdn.matomo.cloud/bis.matomo.cloud/matomo.js57 KB30 KB (53%)✓3rd
https://www.bis.org/js/jquery3.js30 KB—✓3rd
https://www.bis.org/js/modernizr.custom.js3 KB—✓3rd
https://www.bis.org/bis_original/bis/standard-pretty-4cdc8e5d8567b62371db0d5853b6fd2d2363f1126e880919f0d2fa3ff8b0acdb.js7 KB—✓3rd
https://bis.matomo.cloud/plugins/HeatmapSessionRecording/configs.php?idsite=1&trackerid=vyqvtq&url=https%3A%2F%2Fwww.bis.org%2F0 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

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

Green Hosting

No green hosting detected

B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
Cache-Control header is set
Got: no-cache
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache

DirectiveValueMeaning
no-cache—Cache but always revalidate first
A+
Page Weight Budget
598 KB transferred, 44 requests
PASS
598 KB transferred, 44 requests
Info::
Page weighs 1.4 MB (598 KB transferred)
Info::
44 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
598 KB / 2.4 MB budget
598 KB transferred
44 requests
0.12 g CO2 per page load
Images 284.1 KiB 48%
JavaScript 209.2 KiB 35%
Fonts 57.4 KiB 10%
CSS 20.5 KiB 3%
Other 16.5 KiB 3%
HTML 5.3 KiB 1%
Other 4.6 KiB 1%
Other 142 B 0%
0 2.4 MB 4.9 MB
Under budget
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
436ms total JS execution
PASS
436ms total JS execution
Info::
https://www.bis.org/: 139ms CPU time
Info::
Unattributable: 113ms CPU time
Info::
https://www.bis.org/application-c64c47ced99e069e6a...: 98ms CPU time
Info::
https://cdn.matomo.cloud/bis.matomo.cloud/matomo.j...: 85ms CPU time
Warning::
Third-party scripts: 436ms (100% of total)

Main Thread Breakdown

Script Evaluation 37% Other 25% Style & Layout 17% Rendering 9% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.bis.org/139ms0ms0ms3rd
Unattributable113ms8ms0ms3rd
https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.js98ms62ms22ms3rd
https://cdn.matomo.cloud/bis.matomo.cloud/matomo.js85ms78ms7ms3rd
A+
Font Loading
4 fonts (57 KB)
PASS
4 fonts (57 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

57 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.0 shttps://www.bis.org/fonts/opensans/open-sans-v15-latin-regular.woff2open-sans-v15-latin-reg... https://www.bis.org/fonts/opensans/open-sans-v15-latin-regular.woff2 — 14.1 KiB — 304 ms — font-display: swaphttps://www.bis.org/fonts/biswebfonts/biswebfonts.ttf?m0962dbiswebfonts.ttf https://www.bis.org/fonts/biswebfonts/biswebfonts.ttf?m0962d — 13.8 KiB — 157 ms — font-display: swaphttps://www.bis.org/fonts/opensans/open-sans-v15-latin-700.woff2open-sans-v15-latin-700... https://www.bis.org/fonts/opensans/open-sans-v15-latin-700.woff2 — 14.8 KiB — 206 ms — font-display: swaphttps://www.bis.org/fonts/opensans/open-sans-v15-latin-600.woff2open-sans-v15-latin-600... https://www.bis.org/fonts/opensans/open-sans-v15-latin-600.woff2 — 14.6 KiB — 224 ms — font-display: swap
open-sans-v15-latin-reg... woff2 swap
Size 14 KB
Load time 304 ms
Start 2.0 s
Risk FOUT — text flashes from fallback to web font
biswebfonts.ttf ttf swap
Size 14 KB
Load time 157 ms
Start 2.0 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
open-sans-v15-latin-700... woff2 swap
Size 15 KB
Load time 206 ms
Start 2.0 s
Risk FOUT — text flashes from fallback to web font
open-sans-v15-latin-600... woff2 swap
Size 15 KB
Load time 224 ms
Start 2.0 s
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 ~4 KB and ~8 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
A
Page Weight Inventory
44 resources · 598 KB · 111 KB savings available
PASS
44 resources · 598 KB · 111 KB savings available
Info::
Within 1MB page-weight target
Got: 598 KB
Info::
~111 KB of savings available
Warning::
43 third-party resources (100% of weight)
44 resources · 597.7 KiB · 43 third-party Within 1MB page-weight target
Image 48% · 289.1 KiB
JavaScript 35% · 209.2 KiB
Font 10% · 57.4 KiB
CSS 3% · 20.5 KiB
Other 3% · 16.2 KiB
Document 1% · 5.3 KiB

~110.7 KiB of savings available

Remove unused JavaScript: 110.7 KiB
Network Waterfall
44 requests over 3262ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.0 shttps://bis.org// https://bis.org/ — 302 — 98 B — 466 ms — http/1.1https://www.bis.org/www.bis.org/ https://www.bis.org/ — 200 — 5.3 KiB — 474 ms — http/1.1https://www.bis.org/bis_original/bis/bis-262d81e317cbfa091209278241285c98d68fd0108063707e26ed5056b5a8a9c7.csswww.bis.org/bis_original/bis/bis-26... https://www.bis.org/bis_original/bis/bis-262d81e317cbfa091209278241285c98d68fd0108063707e26ed5056b5a8a9c7.css — 200 — 13.4 KiB — 168 ms — http/1.1https://www.bis.org/bis_original/datepicker-2b8b830d9c7f6d44e13429eb6f9765b328252be7861d72d47fff747eed394520.csswww.bis.org/bis_original/datepicker... https://www.bis.org/bis_original/datepicker-2b8b830d9c7f6d44e13429eb6f9765b328252be7861d72d47fff747eed394520.css — 200 — 1.1 KiB — 327 ms — http/1.1https://www.bis.org/bis_original/select2-9f92f610bb1b5969b636a4d9c11476007c07643dfa60decc107ec99c81529f51.csswww.bis.org/bis_original/select2-9f... https://www.bis.org/bis_original/select2-9f92f610bb1b5969b636a4d9c11476007c07643dfa60decc107ec99c81529f51.css — 200 — 2.2 KiB — 468 ms — http/1.1https://www.bis.org/application-7aad27a6997b61c1490ab5b33b9a9a23d7ae915d79bd20c9b87fb5f87797e242.csswww.bis.org/application-7aad27a6997... https://www.bis.org/application-7aad27a6997b61c1490ab5b33b9a9a23d7ae915d79bd20c9b87fb5f87797e242.css — 200 — 1.0 KiB — 459 ms — http/1.1https://www.bis.org/js/jquery3.jswww.bis.org/js/jquery3.js https://www.bis.org/js/jquery3.js — 200 — 30.1 KiB — 626 ms — http/1.1https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.jswww.bis.org/application-c64c47ced99... https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.js — 200 — 112.4 KiB — 956 ms — http/1.1https://www.bis.org/js/modernizr.custom.jswww.bis.org/js/modernizr.custom.js https://www.bis.org/js/modernizr.custom.js — 200 — 2.5 KiB — 483 ms — http/1.1https://www.bis.org/bis_original/bis/standard-pretty-4cdc8e5d8567b62371db0d5853b6fd2d2363f1126e880919f0d2fa3ff8b0acdb.jswww.bis.org/bis_original/bis/standa... https://www.bis.org/bis_original/bis/standard-pretty-4cdc8e5d8567b62371db0d5853b6fd2d2363f1126e880919f0d2fa3ff8b0acdb.js — 200 — 7.2 KiB — 624 ms — http/1.1https://www.bis.org/bis_original/bis/homepage-bdcd853a1404128470207f61eddcb76f726c63fcbe75233415617a3bea6493e7.csswww.bis.org/bis_original/bis/homepa... https://www.bis.org/bis_original/bis/homepage-bdcd853a1404128470207f61eddcb76f726c63fcbe75233415617a3bea6493e7.css — 200 — 1.8 KiB — 464 ms — http/1.1https://www.bis.org/img/icons/closeX.pngwww.bis.org/img/icons/closeX.png https://www.bis.org/img/icons/closeX.png — 200 — 3.5 KiB — 158 ms — http/1.1https://www.bis.org/img/bis-logo-short.gifwww.bis.org/img/bis-logo-short.gif https://www.bis.org/img/bis-logo-short.gif — 200 — 4.0 KiB — 158 ms — http/1.1https://www.bis.org/img/homepage/bcbs.jpgwww.bis.org/img/homepage/bcbs.jpg https://www.bis.org/img/homepage/bcbs.jpg — 200 — 56.1 KiB — 312 ms — http/1.1https://www.bis.org/img/homepage/bisihub.jpgwww.bis.org/img/homepage/bisihub.jp... https://www.bis.org/img/homepage/bisihub.jpg — 200 — 15.8 KiB — 306 ms — http/1.1https://www.bis.org/img/ymabii/vacancies.jpgwww.bis.org/img/ymabii/vacancies.jp... https://www.bis.org/img/ymabii/vacancies.jpg — 200 — 12.4 KiB — 159 ms — http/1.1https://www.bis.org/img/ymabii/fsi.jpgwww.bis.org/img/ymabii/fsi.jpg https://www.bis.org/img/ymabii/fsi.jpg — 200 — 7.7 KiB — 157 ms — http/1.1https://www.bis.org/img/ymabii/inno_hub.jpgwww.bis.org/img/ymabii/inno_hub.jpg https://www.bis.org/img/ymabii/inno_hub.jpg — 200 — 6.0 KiB — 158 ms — http/1.1https://www.bis.org/bis_original/shared/print-5dd6ea242dd39ae99601c816cf6ba8e800e519f71ffa3f5a06a8ef0ddf95f597.csswww.bis.org/bis_original/shared/pri... https://www.bis.org/bis_original/shared/print-5dd6ea242dd39ae99601c816cf6ba8e800e519f71ffa3f5a06a8ef0ddf95f597.css — 200 — 983 B — 161 ms — http/1.1https://www.bis.org/fonts/opensans/open-sans-v15-latin-regular.woff2www.bis.org/fonts/opensans/open-san... https://www.bis.org/fonts/opensans/open-sans-v15-latin-regular.woff2 — 200 — 14.1 KiB — 304 ms — http/1.1https://www.bis.org/fonts/biswebfonts/biswebfonts.ttf?m0962dwww.bis.org/fonts/biswebfonts/biswe... https://www.bis.org/fonts/biswebfonts/biswebfonts.ttf?m0962d — 200 — 13.8 KiB — 157 ms — http/1.1https://www.bis.org/fonts/opensans/open-sans-v15-latin-700.woff2www.bis.org/fonts/opensans/open-san... https://www.bis.org/fonts/opensans/open-sans-v15-latin-700.woff2 — 200 — 14.8 KiB — 206 ms — http/1.1https://www.bis.org/fonts/opensans/open-sans-v15-latin-600.woff2www.bis.org/fonts/opensans/open-san... https://www.bis.org/fonts/opensans/open-sans-v15-latin-600.woff2 — 200 — 14.6 KiB — 224 ms — http/1.1https://www.bis.org/api/menus.jsonwww.bis.org/api/menus.json https://www.bis.org/api/menus.json — 200 — 7.5 KiB — 270 ms — http/1.1https://www.bis.org/api/tables/homepage_highlightboxes_redesign.jsonwww.bis.org/api/tables/homepage_hig... https://www.bis.org/api/tables/homepage_highlightboxes_redesign.json — 200 — 1.0 KiB — 259 ms — http/1.1https://www.bis.org/api/tables/homepage_speeches_bisspeeches.jsonwww.bis.org/api/tables/homepage_spe... https://www.bis.org/api/tables/homepage_speeches_bisspeeches.json — 200 — 952 B — 296 ms — http/1.1https://www.bis.org/api/tables/homepage_speeches_cbspeeches.jsonwww.bis.org/api/tables/homepage_spe... https://www.bis.org/api/tables/homepage_speeches_cbspeeches.json — 200 — 725 B — 344 ms — http/1.1https://www.bis.org/api/tables/homepage_research_bispubls.jsonwww.bis.org/api/tables/homepage_res... https://www.bis.org/api/tables/homepage_research_bispubls.json — 200 — 955 B — 359 ms — http/1.1https://www.bis.org/api/tables/homepage_statistics_statspubls.jsonwww.bis.org/api/tables/homepage_sta... https://www.bis.org/api/tables/homepage_statistics_statspubls.json — 200 — 661 B — 407 ms — http/1.1https://www.bis.org/api/tables/homepage_bcbs_bcbspubls.jsonwww.bis.org/api/tables/homepage_bcb... https://www.bis.org/api/tables/homepage_bcbs_bcbspubls.json — 200 — 809 B — 421 ms — http/1.1
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.0 shttps://bis.org// https://bis.org/ — 302 — 98 B — 466 ms — http/1.1https://www.bis.org/www.bis.org/ https://www.bis.org/ — 200 — 5.3 KiB — 474 ms — http/1.1https://www.bis.org/bis_original/bis/bis-262d81e317cbfa091209278241285c98d68fd0108063707e26ed5056b5a8a9c7.csswww.bis.org/bis_original/bis/bis-26... https://www.bis.org/bis_original/bis/bis-262d81e317cbfa091209278241285c98d68fd0108063707e26ed5056b5a8a9c7.css — 200 — 13.4 KiB — 168 ms — http/1.1https://www.bis.org/bis_original/datepicker-2b8b830d9c7f6d44e13429eb6f9765b328252be7861d72d47fff747eed394520.csswww.bis.org/bis_original/datepicker... https://www.bis.org/bis_original/datepicker-2b8b830d9c7f6d44e13429eb6f9765b328252be7861d72d47fff747eed394520.css — 200 — 1.1 KiB — 327 ms — http/1.1https://www.bis.org/bis_original/select2-9f92f610bb1b5969b636a4d9c11476007c07643dfa60decc107ec99c81529f51.csswww.bis.org/bis_original/select2-9f... https://www.bis.org/bis_original/select2-9f92f610bb1b5969b636a4d9c11476007c07643dfa60decc107ec99c81529f51.css — 200 — 2.2 KiB — 468 ms — http/1.1https://www.bis.org/application-7aad27a6997b61c1490ab5b33b9a9a23d7ae915d79bd20c9b87fb5f87797e242.csswww.bis.org/application-7aad27a6997... https://www.bis.org/application-7aad27a6997b61c1490ab5b33b9a9a23d7ae915d79bd20c9b87fb5f87797e242.css — 200 — 1.0 KiB — 459 ms — http/1.1https://www.bis.org/js/jquery3.jswww.bis.org/js/jquery3.js https://www.bis.org/js/jquery3.js — 200 — 30.1 KiB — 626 ms — http/1.1https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.jswww.bis.org/application-c64c47ced99... https://www.bis.org/application-c64c47ced99e069e6a585aba40bd1b96a5b219eb84c2154d66dfec4092423576.js — 200 — 112.4 KiB — 956 ms — http/1.1https://www.bis.org/js/modernizr.custom.jswww.bis.org/js/modernizr.custom.js https://www.bis.org/js/modernizr.custom.js — 200 — 2.5 KiB — 483 ms — http/1.1https://www.bis.org/bis_original/bis/standard-pretty-4cdc8e5d8567b62371db0d5853b6fd2d2363f1126e880919f0d2fa3ff8b0acdb.jswww.bis.org/bis_original/bis/standa... https://www.bis.org/bis_original/bis/standard-pretty-4cdc8e5d8567b62371db0d5853b6fd2d2363f1126e880919f0d2fa3ff8b0acdb.js — 200 — 7.2 KiB — 624 ms — http/1.1https://www.bis.org/bis_original/bis/homepage-bdcd853a1404128470207f61eddcb76f726c63fcbe75233415617a3bea6493e7.csswww.bis.org/bis_original/bis/homepa... https://www.bis.org/bis_original/bis/homepage-bdcd853a1404128470207f61eddcb76f726c63fcbe75233415617a3bea6493e7.css — 200 — 1.8 KiB — 464 ms — http/1.1https://www.bis.org/img/icons/closeX.pngwww.bis.org/img/icons/closeX.png https://www.bis.org/img/icons/closeX.png — 200 — 3.5 KiB — 158 ms — http/1.1https://www.bis.org/img/bis-logo-short.gifwww.bis.org/img/bis-logo-short.gif https://www.bis.org/img/bis-logo-short.gif — 200 — 4.0 KiB — 158 ms — 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http/1.1https://www.bis.org/api/tables/homepage_announcements.jsonwww.bis.org/api/tables/homepage_ann... https://www.bis.org/api/tables/homepage_announcements.json — 200 — 625 B — 515 ms — http/1.1https://www.bis.org/api/documents/index.jsonwww.bis.org/api/documents/index.jso... https://www.bis.org/api/documents/index.json — 200 — 585 B — 560 ms — http/1.1https://www.bis.org/img/hl/ph_sp260825.jpgwww.bis.org/img/hl/ph_sp260825.jpg https://www.bis.org/img/hl/ph_sp260825.jpg — 200 — 12.5 KiB — 313 ms — http/1.1https://www.bis.org/img/hl/ph_fsibriefs30.jpgwww.bis.org/img/hl/ph_fsibriefs30.j... https://www.bis.org/img/hl/ph_fsibriefs30.jpg — 200 — 36.7 KiB — 455 ms — http/1.1https://www.bis.org/img/hl/sh_qt2603b.jpgwww.bis.org/img/hl/sh_qt2603b.jpg https://www.bis.org/img/hl/sh_qt2603b.jpg — 200 — 102.4 KiB — 637 ms — http/1.1https://www.bis.org/favicon-570124710617266452aaee59dc8fe89474345158607e5dd372d3f5389925fe99.icowww.bis.org/favicon-570124710617266... 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http/1.1https://bis.matomo.cloud/matomo.php?action_name=Bank%20for%20International%20Settlements&idsite=1&rec=1&r=443103&h=23&m=23&s=19&url=https%3A%2F%2Fwww.bis.org%2F&_id=0bbbd3ba5f90fda3&_idn=1&send_image=0&_refts=0&dimension1=Other&dimension2=BIS&dimension3=Descriptive&dimension4=null&dimension5=null&dimension6=null&dimension7=en&dimension8=1522754580&dimension9=null&dimension10=2940&pv_id=8jrVoL&fa_pv=1&fa_fp[0][fa_vid]=bAHLvs&fa_fp[0][fa_fv]=1&fa_fp[1][fa_vid]=L059wR&fa_fp[1][fa_fv]=1&pf_net=314&pf_srv=158&pf_tfr=3&pf_dm1=1056&pf_dm2=274&pf_onl=0&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Not-A.Brand%22%2C%22version%22%3A%2224.0.0.0%22%7D%2C%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22146.0.7680.164%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600bis.matomo.cloud/matomo.php?action_... https://bis.matomo.cloud/matomo.php?action_name=Bank%20for%20International%20Settlements&idsite=1&rec=1&r=443103&h=23&m=23&s=19&url=https%3A%2F%2Fwww.bis.org%2F&_id=0bbbd3ba5f90fda3&_idn=1&send_image=0&_refts=0&dimension1=Other&dimension2=BIS&dimension3=Descriptive&dimension4=null&dimension5=null&dimension6=null&dimension7=en&dimension8=1522754580&dimension9=null&dimension10=2940&pv_id=8jrVoL&fa_pv=1&fa_fp[0][fa_vid]=bAHLvs&fa_fp[0][fa_fv]=1&fa_fp[1][fa_vid]=L059wR&fa_fp[1][fa_fv]=1&pf_net=314&pf_srv=158&pf_tfr=3&pf_dm1=1056&pf_dm2=274&pf_onl=0&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Not-A.Brand%22%2C%22version%22%3A%2224.0.0.0%22%7D%2C%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22146.0.7680.164%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600 — 204 — 142 B — 599 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 436ms · 175KB · CHF7/mo
www.bis.org
Other
Optional
Execution 139ms
Transfer 5 KB
Monthly Cost CHF2/mo
Unattributable
Other
Optional
Execution 113ms
Transfer 0 KB
Monthly Cost CHF2/mo
www.bis.org
Other
Optional
Execution 98ms
Transfer 112 KB
Unused 72%
Monthly Cost CHF2/mo
Matomo
Analytics
Optional
Execution 85ms
Transfer 57 KB
Unused 53%
Monthly Cost CHF1/mo

100% 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

72% of www.bis.org'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 Matomo'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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