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https://zenodo.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
75
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
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.
83
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.

708 ms

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

3.24 s

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

209 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.

901 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

3.24 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 3 REVIEW 4 FIX
F
Page Weight Budget
Action
5.8 MB transferred, 41 requests
FIX
5.8 MB transferred, 41 requests
Critical::
Page weighs 7.8 MB (5.8 MB transferred)
Warning::
JavaScript is 3.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.6 MB
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Info::
CSS is 454 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 454 KB
Info::
41 HTTP requests
Info::
Estimated 1.2 g CO2 per page load
5.8 MB / 2.4 MB budget
5.8 MB transferred
41 requests
1.2 g CO2 per page load
JavaScript 3.6 MiB 62%
Images 1.7 MiB 29%
CSS 454.0 KiB 8%
Fonts 51.8 KiB 1%
HTML 12.4 KiB 0%
Other 2.6 KiB 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

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

F
JS Bundles
Action
23 scripts, 1.9 MB unused
FIX
23 scripts, 1.9 MB unused
Warning::
https://zenodo.org/static/dist/js/1057.a721f4208c9...: 987 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://zenodo.org/static/dist/js/3526.d2d1858da04...: 244 KB unused (90%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://zenodo.org/static/dist/js/8064.6e912921ea6...: 229 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://zenodo.org/static/dist/js/8871.987bc777996...: 220 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2...: 97 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.9 MB
1956 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://zenodo.org/static/dist/js/1057.a721f4208c91fd46e349.js1286 KB987 KB (77%)✓1st
https://zenodo.org/static/dist/js/3526.d2d1858da044613c6154.js271 KB244 KB (90%)✓1st
https://zenodo.org/static/dist/js/8064.6e912921ea6918de776d.js363 KB229 KB (63%)✓1st
https://zenodo.org/static/dist/js/8871.987bc777996af95ba9d4.js294 KB220 KB (75%)✓1st
https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMML201 KB97 KB (49%)✓3rd
https://zenodo.org/static/dist/js/2827.a8bbc0b6614aa6d344c2.js209 KB93 KB (45%)✓1st
https://zenodo.org/static/dist/js/73.eff6d29b79c9412c5335.js86 KB60 KB (71%)✓1st
https://zenodo.org/static/dist/js/5941.579c270a17ef63bbe49f.js32 KB25 KB (81%)✓1st
https://zenodo.org/static/dist/js/5092.a8e9aa3149755c25c425.js15 KB—✓1st
https://zenodo.org/static/dist/js/8118.cc562b5391bb9311e731.js41 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

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

F
Page Weight Inventory
Action
41 resources · 5.8 MB · 1.9 MB savings available
FIX
41 resources · 5.8 MB · 1.9 MB savings available
Warning::
Page weight 4.8 MB over 1MB target
Got: 5.8 MB Expected: ≤ 1 MB
Info::
~1.9 MB of savings available
Info::
2 third-party resources (4% of weight)
Info::
12 resources over 200KB
41 resources · 5.8 MiB · 2 third-party 4.8 MiB over 1MB target
JavaScript 62% · 3.6 MiB
Image 29% · 1.7 MiB
CSS 8% · 454.0 KiB
Font 1% · 51.8 KiB
Document 0% · 12.4 KiB

~1.9 MiB of savings available

Remove unused JavaScript: 1.9 MiB
F
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.

No Cache-Control header

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

C
Image Optimization
Action
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Warning::
https://zenodo.org/static/images/invenio-rdm.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://zenodo.org/api/communities/f0a8b890-f97a-4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 1.7 MB
0 oversized -0 KB
13 legacy format
2 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

B
JS Execution Cost
525ms total JS execution
REVIEW
525ms total JS execution
Info::
https://zenodo.org/static/dist/js/base-theme-rdm.8...: 177ms CPU time
Info::
https://zenodo.org/: 143ms CPU time
Info::
https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2...: 138ms CPU time
Info::
Unattributable: 67ms CPU time
Info::
Third-party scripts: 205ms (39% of total)

Main Thread Breakdown

Script Evaluation 47% Other 19% Script Parsing & Compilation 16% Style & Layout 12% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://zenodo.org/static/dist/js/base-theme-rdm.8c1a005fb1f90f95a2c6.js177ms176ms0ms1st
https://zenodo.org/143ms2ms0ms1st
https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMML138ms103ms32ms3rd
Unattributable67ms1ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
4% third-party, 0 ms blocking
PASS
4% third-party, 0 ms blocking
Info::
Third-party code accounts for 4% of page weight (222.7 KiB of 5.8 MiB)
Info::
Third-party blocking time is low (0 ms)
96%
First-party Third-party
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
2 fonts (52 KB)
PASS
2 fonts (52 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

52 KB total

Render-blocking

0

of 2

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 708 ms LCP 3.2 shttps://zenodo.org/static/dist/fonts/icons.38c6d8b..woff2icons.38c6d8b..woff2 https://zenodo.org/static/dist/fonts/icons.38c6d8b..woff2 — 39.5 KiB — 89 ms — font-display: swaphttps://zenodo.org/static/dist/fonts/outline-icons.687a499..woff2outline-icons.687a499..... https://zenodo.org/static/dist/fonts/outline-icons.687a499..woff2 — 12.3 KiB — 101 ms — font-display: swap
icons.38c6d8b..woff2 woff2 swap
Size 40 KB
Load time 89 ms
Start 406 ms
Risk FOUT — text flashes from fallback to web font
outline-icons.687a499..... woff2 swap
Size 12 KB
Load time 101 ms
Start 406 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)
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
41 requests over 1604ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 708 ms LCP 3.2 shttps://zenodo.org// https://zenodo.org/ — 200 — 12.4 KiB — 169 ms — http/1.1https://zenodo.org/static/dist/css/3526.496cd2b949c08130e777.css/static/dist/css/3526.496cd2b949c08... https://zenodo.org/static/dist/css/3526.496cd2b949c08130e777.css — 200 — 454.0 KiB — 201 ms — http/1.1https://zenodo.org/static/images/invenio-rdm.svg/static/images/invenio-rdm.svg https://zenodo.org/static/images/invenio-rdm.svg — 200 — 6.9 KiB — 101 ms — http/1.1https://zenodo.org/api/communities/f0a8b890-f97a-4eb2-9eac-8b8a712d3a6c/logo/api/communities/f0a8b890-f97a-4eb2... https://zenodo.org/api/communities/f0a8b890-f97a-4eb2-9eac-8b8a712d3a6c/logo — 200 — 207.4 KiB — 325 ms — http/1.1https://zenodo.org/api/communities/7a140649-c350-45e3-a41d-eb8f04abd3d6/logo/api/communities/7a140649-c350-45e3... https://zenodo.org/api/communities/7a140649-c350-45e3-a41d-eb8f04abd3d6/logo — 200 — 36.5 KiB — 224 ms — http/1.1https://zenodo.org/api/communities/ee30dbe2-9bc2-4e6f-9739-d459f718c8da/logo/api/communities/ee30dbe2-9bc2-4e6f... https://zenodo.org/api/communities/ee30dbe2-9bc2-4e6f-9739-d459f718c8da/logo — 200 — 106.9 KiB — 667 ms — http/1.1https://zenodo.org/api/communities/c529f97d-f8cb-4c13-a439-9e36891694c2/logo/api/communities/c529f97d-f8cb-4c13... https://zenodo.org/api/communities/c529f97d-f8cb-4c13-a439-9e36891694c2/logo — 200 — 9.4 KiB — 173 ms — http/1.1https://zenodo.org/static/dist/js/manifest.6150a9655207da04b037.js/static/dist/js/manifest.6150a96552... https://zenodo.org/static/dist/js/manifest.6150a9655207da04b037.js — 200 — 4.4 KiB — 59 ms — http/1.1https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMMLcdnjs.cloudflare.com/ajax/libs/math... https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMML — 200 — 200.6 KiB — 116 ms — h3https://zenodo.org/static/dist/js/zenodo-rdm-communities-carousel.e73a34523857c7369d92.js/static/dist/js/zenodo-rdm-communit... https://zenodo.org/static/dist/js/zenodo-rdm-communities-carousel.e73a34523857c7369d92.js — 200 — 2.4 KiB — 34 ms — http/1.1https://zenodo.org/static/dist/js/73.eff6d29b79c9412c5335.js/static/dist/js/73.eff6d29b79c9412c... https://zenodo.org/static/dist/js/73.eff6d29b79c9412c5335.js — 200 — 85.9 KiB — 98 ms — http/1.1https://zenodo.org/static/dist/js/3526.d2d1858da044613c6154.js/static/dist/js/3526.d2d1858da04461... https://zenodo.org/static/dist/js/3526.d2d1858da044613c6154.js — 200 — 270.6 KiB — 134 ms — http/1.1https://zenodo.org/static/dist/js/theme.46e20d3a883fda8b01b2.js/static/dist/js/theme.46e20d3a883fd... https://zenodo.org/static/dist/js/theme.46e20d3a883fda8b01b2.js — 200 — 2.7 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/2827.a8bbc0b6614aa6d344c2.js/static/dist/js/2827.a8bbc0b6614aa6... https://zenodo.org/static/dist/js/2827.a8bbc0b6614aa6d344c2.js — 200 — 208.6 KiB — 98 ms — http/1.1https://zenodo.org/static/dist/js/8064.6e912921ea6918de776d.js/static/dist/js/8064.6e912921ea6918... https://zenodo.org/static/dist/js/8064.6e912921ea6918de776d.js — 200 — 362.8 KiB — 105 ms — http/1.1https://zenodo.org/static/dist/js/1057.a721f4208c91fd46e349.js/static/dist/js/1057.a721f4208c91fd... https://zenodo.org/static/dist/js/1057.a721f4208c91fd46e349.js — 200 — 1.3 MiB — 92 ms — http/1.1https://zenodo.org/static/dist/fonts/icons.38c6d8b..woff2/static/dist/fonts/icons.38c6d8b..w... https://zenodo.org/static/dist/fonts/icons.38c6d8b..woff2 — 200 — 39.5 KiB — 89 ms — http/1.1https://zenodo.org/static/dist/fonts/outline-icons.687a499..woff2/static/dist/fonts/outline-icons.68... https://zenodo.org/static/dist/fonts/outline-icons.687a499..woff2 — 200 — 12.3 KiB — 101 ms — http/1.1https://zenodo.org/static/dist/js/7655.49da91d7c142bad19ccb.js/static/dist/js/7655.49da91d7c142ba... https://zenodo.org/static/dist/js/7655.49da91d7c142bad19ccb.js — 200 — 49.8 KiB — 36 ms — http/1.1https://zenodo.org/static/dist/js/5092.a8e9aa3149755c25c425.js/static/dist/js/5092.a8e9aa3149755c... https://zenodo.org/static/dist/js/5092.a8e9aa3149755c25c425.js — 200 — 15.5 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/8871.987bc777996af95ba9d4.js/static/dist/js/8871.987bc777996af9... https://zenodo.org/static/dist/js/8871.987bc777996af95ba9d4.js — 200 — 294.1 KiB — 39 ms — http/1.1https://zenodo.org/static/dist/js/278.8d92f1a6c45c7759d815.js/static/dist/js/278.8d92f1a6c45c775... https://zenodo.org/static/dist/js/278.8d92f1a6c45c7759d815.js — 200 — 27.7 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/5941.579c270a17ef63bbe49f.js/static/dist/js/5941.579c270a17ef63... https://zenodo.org/static/dist/js/5941.579c270a17ef63bbe49f.js — 200 — 31.7 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/8400.01b33ce9f7568ae61d22.js/static/dist/js/8400.01b33ce9f7568a... https://zenodo.org/static/dist/js/8400.01b33ce9f7568ae61d22.js — 200 — 8.3 KiB — 34 ms — http/1.1https://zenodo.org/static/dist/js/8118.cc562b5391bb9311e731.js/static/dist/js/8118.cc562b5391bb93... https://zenodo.org/static/dist/js/8118.cc562b5391bb9311e731.js — 200 — 41.3 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/4157.b89712ff141a054ffdf0.js/static/dist/js/4157.b89712ff141a05... https://zenodo.org/static/dist/js/4157.b89712ff141a054ffdf0.js — 200 — 420.2 KiB — 45 ms — http/1.1https://zenodo.org/static/dist/js/base-theme-rdm.8c1a005fb1f90f95a2c6.js/static/dist/js/base-theme-rdm.8c1a... https://zenodo.org/static/dist/js/base-theme-rdm.8c1a005fb1f90f95a2c6.js — 200 — 19.7 KiB — 37 ms — http/1.1https://zenodo.org/static/dist/js/i18n_app.45ea25224d14a494a50c.js/static/dist/js/i18n_app.45ea25224d... https://zenodo.org/static/dist/js/i18n_app.45ea25224d14a494a50c.js — 200 — 708 B — 34 ms — http/1.1https://zenodo.org/static/dist/js/2301.7b05926e461909740138.js/static/dist/js/2301.7b05926e461909... https://zenodo.org/static/dist/js/2301.7b05926e461909740138.js — 200 — 268.0 KiB — 39 ms — http/1.1https://zenodo.org/static/dist/js/4252.50b9d9c9a0b065bca32e.js/static/dist/js/4252.50b9d9c9a0b065... https://zenodo.org/static/dist/js/4252.50b9d9c9a0b065bca32e.js — 200 — 13.5 KiB — 35 ms — http/1.1
0 ms 1.0 s 2.0 s 3.0 s FCP 708 ms LCP 3.2 shttps://zenodo.org// https://zenodo.org/ — 200 — 12.4 KiB — 169 ms — http/1.1https://zenodo.org/static/dist/css/3526.496cd2b949c08130e777.css/static/dist/css/3526.496cd2b949c08... https://zenodo.org/static/dist/css/3526.496cd2b949c08130e777.css — 200 — 454.0 KiB — 201 ms — http/1.1https://zenodo.org/static/images/invenio-rdm.svg/static/images/invenio-rdm.svg https://zenodo.org/static/images/invenio-rdm.svg — 200 — 6.9 KiB — 101 ms — http/1.1https://zenodo.org/api/communities/f0a8b890-f97a-4eb2-9eac-8b8a712d3a6c/logo/api/communities/f0a8b890-f97a-4eb2... https://zenodo.org/api/communities/f0a8b890-f97a-4eb2-9eac-8b8a712d3a6c/logo — 200 — 207.4 KiB — 325 ms — http/1.1https://zenodo.org/api/communities/7a140649-c350-45e3-a41d-eb8f04abd3d6/logo/api/communities/7a140649-c350-45e3... https://zenodo.org/api/communities/7a140649-c350-45e3-a41d-eb8f04abd3d6/logo — 200 — 36.5 KiB — 224 ms — http/1.1https://zenodo.org/api/communities/ee30dbe2-9bc2-4e6f-9739-d459f718c8da/logo/api/communities/ee30dbe2-9bc2-4e6f... https://zenodo.org/api/communities/ee30dbe2-9bc2-4e6f-9739-d459f718c8da/logo — 200 — 106.9 KiB — 667 ms — http/1.1https://zenodo.org/api/communities/c529f97d-f8cb-4c13-a439-9e36891694c2/logo/api/communities/c529f97d-f8cb-4c13... https://zenodo.org/api/communities/c529f97d-f8cb-4c13-a439-9e36891694c2/logo — 200 — 9.4 KiB — 173 ms — http/1.1https://zenodo.org/static/dist/js/manifest.6150a9655207da04b037.js/static/dist/js/manifest.6150a96552... https://zenodo.org/static/dist/js/manifest.6150a9655207da04b037.js — 200 — 4.4 KiB — 59 ms — http/1.1https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMMLcdnjs.cloudflare.com/ajax/libs/math... https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js?config=TeX-AMS-MML_HTMLorMML — 200 — 200.6 KiB — 116 ms — h3https://zenodo.org/static/dist/js/zenodo-rdm-communities-carousel.e73a34523857c7369d92.js/static/dist/js/zenodo-rdm-communit... https://zenodo.org/static/dist/js/zenodo-rdm-communities-carousel.e73a34523857c7369d92.js — 200 — 2.4 KiB — 34 ms — http/1.1https://zenodo.org/static/dist/js/73.eff6d29b79c9412c5335.js/static/dist/js/73.eff6d29b79c9412c... https://zenodo.org/static/dist/js/73.eff6d29b79c9412c5335.js — 200 — 85.9 KiB — 98 ms — http/1.1https://zenodo.org/static/dist/js/3526.d2d1858da044613c6154.js/static/dist/js/3526.d2d1858da04461... https://zenodo.org/static/dist/js/3526.d2d1858da044613c6154.js — 200 — 270.6 KiB — 134 ms — http/1.1https://zenodo.org/static/dist/js/theme.46e20d3a883fda8b01b2.js/static/dist/js/theme.46e20d3a883fd... https://zenodo.org/static/dist/js/theme.46e20d3a883fda8b01b2.js — 200 — 2.7 KiB — 35 ms — http/1.1https://zenodo.org/static/dist/js/2827.a8bbc0b6614aa6d344c2.js/static/dist/js/2827.a8bbc0b6614aa6... 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— http/1.1https://zenodo.org/static/images/eu.png/static/images/eu.png https://zenodo.org/static/images/eu.png — 200 — 1.9 KiB — 33 ms — http/1.1https://webanalytics.web.cern.ch/matomo.jswebanalytics.web.cern.ch/matomo.js https://webanalytics.web.cern.ch/matomo.js — 200 — 22.1 KiB — 207 ms — http/1.1https://zenodo.org/static/favicon.ico/static/favicon.ico https://zenodo.org/static/favicon.ico — 200 — 2.6 KiB — 35 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
39% of JavaScript execution is third-party
First-party Third-party 205ms · 201KB · €2/mo
cdnjs
CDN
Optional
Execution 138ms
Transfer 201 KB
Unused 49%
Monthly Cost €2/mo
Unattributable
Other
Optional
Execution 67ms
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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