URL: https://lab42.uva.nl
Date: 04/30/25 06:45:30

Webpage Performance Test Result

Settings: Desktopv134CableFrankfurt, Germany
More
- Test runs: 1
- Connectivity: 5000/1000 Kbps, 28ms Latency
- Custom Metrics

Requests Details

Use this page to explore the metric timings and request waterfall for any run of your test.

Page Performance Metrics (Run 1)

TTFB	Start Render	FCP	Speed Index	LCP	CLS	TBT	DC Time	DC Requests	DC Bytes	Total Time	Total Requests	Page Weight
.392S	1.600S	1.610S	3.342S	5.267S	.028	.000S	5.499S	16	2,798KB	5.499S	16	2,798KB

Visual Page Loading Process (Explore)

Navigation Timings
domContentLoadedEvent	loadEvent
2.554s - 2.563s (0.009s)	5.399s - 5.400s (0.001s)

Custom Metrics Data

Colordepth: 24
Dpi: {"dppx":1,"dpcm":37.79527559055118,"dpi":96}
Images: [{"url":"https://lab42.uva.nl/media/pages/medialibrary/e6e55e6a77-1730804218/ascii-robots.jpg","width":960,"height":993,"naturalWidth":3000,"naturalHeight":2201}]
Resolution: {"absolute":{"height":1200,"width":1920},"available":{"height":1200,"width":1920}}
fonts: [{"family":"utopia-std","display":"auto","status":"loaded","style":"normal","weight":"400"},{"family":"utopia-std","display":"auto","status":"unloaded","style":"italic","weight":"400"},{"family":"utopia-std","display":"auto","status":"loaded","style":"normal","weight":"700"},{"family":"utopia-std","display":"auto","status":"unloaded","style":"italic","weight":"700"},{"family":"utopia-std","display":"auto","status":"unloaded","style":"normal","weight":"600"},{"family":"utopia-std","display":"auto","status":"unloaded","style":"italic","weight":"600"},{"family":"eb-garamond","display":"auto","status":"unloaded","style":"normal","weight":"400"},{"family":"eb-garamond","display":"auto","status":"unloaded","style":"normal","weight":"500"},{"family":"eb-garamond","display":"auto","status":"unloaded","style":"normal","weight":"600"},{"family":"source-sans-pro","display":"auto","status":"unloaded","style":"normal","weight":"400"},{"family":"source-sans-pro","display":"auto","status":"unloaded","style":"normal","weight":"300"},{"family":"source-sans-pro","display":"auto","status":"unloaded","style":"normal","weight":"600"},{"family":"SuisseIntlMono","display":"swap","status":"loaded","style":"normal","weight":"400"}]
generated-content-percent: 64.57
generated-content-size: 48.97
imgs-in-viewport: [{"src":"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg","html":"<img class=\"o-page-columns__canvas\" id=\"imageEl\" src=\"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg\">","currentSrc":"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg","srcSet":null,"sizes":null,"priority":null,"loading":null,"naturalWidth":3000,"naturalHeight":2201}]
imgs-no-alt: [{"src":"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg","html":"<img class=\"o-page-columns__canvas\" id=\"imageEl\" src=\"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg\">","currentSrc":"https:\/\/lab42.uva.nl\/media\/pages\/medialibrary\/e6e55e6a77-1730804218\/ascii-robots.jpg"}]
imgs-out-viewport: []
jsLibsVulns: []
meta-viewport: width=device-width, initial-scale=1, minimum-scale=1
possibly-render-blocking-reqs: ["https:\/\/lab42.uva.nl\/assets\/cookies.js","https:\/\/use.typekit.net\/emf5eij.css","https:\/\/lab42.uva.nl\/assets\/build\/app.css?id=683595b21b53733950e9"]
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href="/fav/favicon-16x16.png"> <script async="" src="https://www.googletagmanager.com/gtm.js?id=GTM-5GSQCD7L&l=gtmDataLayer"></script><script async="" src="https://www.googletagmanager.com/gtm.js?id=GTM-M8R5VT9"></script><script type="application/javascript"> document.documentElement.className = "js" </script> <link rel="preload" href="/assets/build/fonts/SuisseIntlMono-Regular-WebXL.woff?id=3c69a872768d88f09fe0" as="font" crossorigin=""> <link rel="preload" href="/assets/build/fonts/SuisseIntlMono-Regular-WebXL.woff2?id=f95653ddb2b7ecd27b60" as="font" crossorigin=""> <link rel="stylesheet" href="https://use.typekit.net/emf5eij.css"> <link href="https://lab42.uva.nl/assets/build/app.css?id=683595b21b53733950e9" rel="stylesheet">  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 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--carousel-button-height: 48px; --carousel-button-svg-width: 27px; --carousel-button-svg-height: 27px; } }.fancybox__backdrop { background: var(--fancybox-bg,rgba(24,24,27,.92)); inset: 0px; position: absolute; z-index: -1; }.fancybox__carousel { flex: 1 1 auto; height: 100%; min-height: 0px; position: relative; z-index: 10; }.fancybox__carousel.has-dots { margin-bottom: calc(22px + 0.5rem); }.fancybox__viewport { cursor: default; height: 100%; overflow: visible; position: relative; width: 100%; }.fancybox__track { display: flex; height: 100%; }.fancybox__slide { --carousel-button-width: 36px; --carousel-button-height: 36px; --carousel-button-svg-width: 22px; --carousel-button-svg-height: 22px; display: flex; flex: 0 0 auto; flex-direction: column; margin: 0px; max-width: 100%; outline: 0px; overflow: auto; overscroll-behavior: contain; padding: 48px 8px 8px; position: relative; width: 100%; }.fancybox__slide::after, .fancybox__slide::before { content: ""; flex: 0 0 0px; margin: auto; }@media (min-width: 1024px) { .fancybox__slide { padding: 64px 100px; } }.fancybox__content { align-self: center; background: var(--fancybox-content-bg,#fff); color: var(--fancybox-content-color,#374151); display: flex; flex-direction: column; margin: 0 env(safe-area-inset-right,0) 0 env(safe-area-inset-left,0); padding: 36px; position: relative; z-index: 20; }.fancybox__caption { align-self: center; color: var(--fancybox-color,currentColor); cursor: auto; flex-shrink: 0; line-height: 1.375; margin: 0px; max-width: 100%; overflow-wrap: anywhere; padding: 1rem 0px 0px; visibility: visible; }.is-loading .fancybox__caption { visibility: hidden; }.fancybox__container > .carousel__dots { color: var(--fancybox-color,#fff); top: 100%; }.fancybox__nav .carousel__button { z-index: 40; }.fancybox__nav .carousel__button.is-next { right: 8px; }@media (min-width: 1024px) { .fancybox__nav .carousel__button.is-next { right: 40px; } }.fancybox__nav .carousel__button.is-prev { left: 8px; }@media 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.fancybox__container.is-animated[aria-hidden="false"] .carousel__dots, .fancybox__container.is-animated[aria-hidden="false"] .fancybox__backdrop, .fancybox__container.is-animated[aria-hidden="false"] .fancybox__caption, .fancybox__container.is-animated[aria-hidden="false"] .fancybox__nav { animation: 0.15s ease 0s 1 normal backwards running fancybox-fadeIn; }.fancybox__container.is-animated.is-closing .carousel__button.is-close, .fancybox__container.is-animated.is-closing .carousel__dots, .fancybox__container.is-animated.is-closing .fancybox__backdrop, .fancybox__container.is-animated.is-closing .fancybox__caption, .fancybox__container.is-animated.is-closing .fancybox__nav { animation: 0.15s ease 0s 1 normal both running fancybox-fadeOut; }.fancybox-fadeIn { animation: 0.15s ease 0s 1 normal both running fancybox-fadeIn; }.fancybox-fadeOut { animation: 0.1s ease 0s 1 normal both running fancybox-fadeOut; }.fancybox-zoomInUp { animation: 0.2s ease 0s 1 normal both running fancybox-zoomInUp; }.fancybox-zoomOutDown { animation: 0.15s ease 0s 1 normal both running fancybox-zoomOutDown; }.fancybox-throwOutUp { animation: 0.15s ease 0s 1 normal both running fancybox-throwOutUp; }.fancybox-throwOutDown { animation: 0.15s ease 0s 1 normal both running fancybox-throwOutDown; }@-webkit-keyframes fancybox-fadeIn { 0% { opacity: 0; } 100% { opacity: 1; } }@keyframes fancybox-fadeIn { 0% { opacity: 0; } 100% { opacity: 1; } }@-webkit-keyframes fancybox-fadeOut { 100% { opacity: 0; } }@keyframes fancybox-fadeOut { 100% { opacity: 0; } }@-webkit-keyframes fancybox-zoomInUp { 0% { opacity: 0; transform: scale(0.97) translate3d(0px, 16px, 0px); } 100% { opacity: 1; transform: scale(1) translateZ(0px); } }@keyframes fancybox-zoomInUp { 0% { opacity: 0; transform: scale(0.97) translate3d(0px, 16px, 0px); } 100% { opacity: 1; transform: scale(1) translateZ(0px); } }@-webkit-keyframes fancybox-zoomOutDown { 100% { opacity: 0; transform: scale(0.97) translate3d(0px, 16px, 0px); } }@keyframes fancybox-zoomOutDown { 100% { opacity: 0; transform: scale(0.97) translate3d(0px, 16px, 0px); } }@-webkit-keyframes fancybox-throwOutUp { 100% { opacity: 0; transform: translate3d(0px, -30%, 0px); } }@keyframes fancybox-throwOutUp { 100% { opacity: 0; transform: translate3d(0px, -30%, 0px); } }@-webkit-keyframes fancybox-throwOutDown { 100% { opacity: 0; transform: translate3d(0px, 30%, 0px); } }@keyframes fancybox-throwOutDown { 100% { opacity: 0; transform: translate3d(0px, 30%, 0px); } }.fancybox__carousel .carousel__slide { scrollbar-color: rgb(204, 204, 204) rgba(255, 255, 255, 0.1); scrollbar-width: thin; }.fancybox__carousel .carousel__slide::-webkit-scrollbar { height: 8px; width: 8px; }.fancybox__carousel .carousel__slide::-webkit-scrollbar-track { background-color: rgba(255, 255, 255, 0.1); }.fancybox__carousel .carousel__slide::-webkit-scrollbar-thumb { background-color: rgb(204, 204, 204); border-radius: 2px; box-shadow: rgba(0, 0, 0, 0.2) 0px 0px 4px inset; }.fancybox__carousel.is-draggable .fancybox__slide, .fancybox__carousel.is-draggable .fancybox__slide .fancybox__content { cursor: grab; }.fancybox__carousel.is-dragging .fancybox__slide, .fancybox__carousel.is-dragging .fancybox__slide .fancybox__content { cursor: grabbing; }.fancybox__carousel .fancybox__slide .fancybox__content { cursor: auto; }.fancybox__carousel .fancybox__slide.can-zoom_in .fancybox__content { cursor: zoom-in; }.fancybox__carousel .fancybox__slide.can-zoom_out .fancybox__content { cursor: zoom-out; }.fancybox__carousel .fancybox__slide.is-draggable .fancybox__content { cursor: grab; }.fancybox__carousel .fancybox__slide.is-dragging .fancybox__content { cursor: grabbing; }.fancybox__image { touch-action: none; transform-origin: 0px 0px; transition: none; user-select: none; }.has-image .fancybox__content { background: transparent; min-height: 1px; padding: 0px; }.is-closing .has-image .fancybox__content { overflow: visible; }.has-image[data-image-fit="contain"] { overflow: visible; touch-action: none; }.has-image[data-image-fit="contain"] .fancybox__image { max-height: 100%; max-width: 100%; object-fit: contain; }.has-image[data-image-fit="contain-w"] { overflow: hidden auto; }.has-image[data-image-fit="contain-w"] .fancybox__content { min-height: auto; }.has-image[data-image-fit="contain-w"] .fancybox__image { height: auto; max-width: 100%; }.has-image[data-image-fit="cover"] { overflow: visible; touch-action: none; }.has-image[data-image-fit="cover"] .fancybox__content { height: 100%; width: 100%; }.has-image[data-image-fit="cover"] .fancybox__image { height: 100%; object-fit: cover; width: 100%; }.fancybox__carousel .fancybox__slide.has-html5video .fancybox__content, .fancybox__carousel .fancybox__slide.has-iframe .fancybox__content, .fancybox__carousel .fancybox__slide.has-map .fancybox__content, .fancybox__carousel .fancybox__slide.has-pdf .fancybox__content, .fancybox__carousel .fancybox__slide.has-video .fancybox__content { flex-shrink: 1; min-height: 1px; overflow: visible; }.fancybox__carousel .fancybox__slide.has-iframe .fancybox__content, .fancybox__carousel .fancybox__slide.has-map .fancybox__content, .fancybox__carousel .fancybox__slide.has-pdf .fancybox__content { height: 80%; width: 100%; }.fancybox__carousel .fancybox__slide.has-html5video .fancybox__content, .fancybox__carousel .fancybox__slide.has-video .fancybox__content { height: 540px; max-height: 100%; max-width: 100%; width: 960px; }.fancybox__carousel .fancybox__slide.has-html5video .fancybox__content, .fancybox__carousel .fancybox__slide.has-map .fancybox__content, .fancybox__carousel .fancybox__slide.has-pdf .fancybox__content, .fancybox__carousel .fancybox__slide.has-video .fancybox__content { background: rgba(24, 24, 27, 0.9); color: rgb(255, 255, 255); padding: 0px; }.fancybox__carousel .fancybox__slide.has-map .fancybox__content { background: rgb(229, 227, 223); }.fancybox__html5video, .fancybox__iframe { background: transparent; border: 0px; display: block; height: 100%; width: 100%; }.fancybox-placeholder { clip: rect(0px, 0px, 0px, 0px); border-width: 0px; height: 1px; margin: -1px; overflow: hidden; padding: 0px; position: absolute; white-space: nowrap; width: 1px; }.fancybox__thumbs { flex: 0 0 auto; opacity: var(--fancybox-opacity,1); padding: 0px 3px; position: relative; }.fancybox__container.is-animated[aria-hidden="false"] .fancybox__thumbs { animation: 0.15s ease-in 0s 1 normal backwards running fancybox-fadeIn; }.fancybox__container.is-animated.is-closing .fancybox__thumbs { opacity: 0; }.fancybox__thumbs .carousel__slide { align-items: center; box-sizing: content-box; cursor: pointer; display: flex; flex: 0 0 auto; justify-content: center; margin: 0px; overflow: visible; padding: 8px 3px; width: var(--fancybox-thumbs-width,96px); }.fancybox__thumbs .carousel__slide .fancybox__thumb::after { border: 5px solid 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4xx Response

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15	https://lab42.uva.nl...age-of-a-robot-2.jpg	image/jpeg	Low	2.562 s	-	-	-	1093 ms	1670 ms	364.9 KB	-	200	178.22.56.114
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Request Headers

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Host: lab42.uva.nl
IP: 178.22.56.114
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Priority: Highest
Protocol: HTTP/2
HTTP/2 Stream: 1, weight 256, depends on 0, EXCLUSIVE
Initiated By: https://lab42.uva.nl/assets/cookies.js
Request Start: 0.161 s
DNS Lookup: 51 ms
Initial Connection: 37 ms
Time to First Byte: 231 ms
Content Download: 1 ms
Bytes In (downloaded): 10.6 KB
Uncompressed Size: 26.9 KB
Bytes Out (uploaded): 2.1 KB

Request Headers:

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Request 13: https://www.googletagmanager.com/gtm.js?id=GTM-M8R5VT9

URL: https://www.googletagmanager.com/gtm.js?id=GTM-M8R5VT9
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date: Wed, 30 Apr 2025 06:44:43 GMT
content-type: text/html; charset=UTF-8
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Request 14: https://www.googletagmanager.com/gtm.js?id=GTM-5GSQCD7L&l=gtmDataLayer

URL: https://www.googletagmanager.com/gtm.js?id=GTM-5GSQCD7L&l=gtmDataLayer
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Error/Status Code: 200
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Request Headers:

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expires: Wed, 30 Apr 2025 06:44:43 GMT
last-modified: Wed, 30 Apr 2025 06:00:00 GMT
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Request 15: https://lab42.uva.nl/media/pages/medialibrary/0afefa2462-1730804211/image-of-a-robot-2.jpg

URL: https://lab42.uva.nl/media/pages/medialibrary/0afefa2462-1730804211/image-of-a-robot-2.jpg
Host: lab42.uva.nl
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content-length: 373665
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date: Wed, 30 Apr 2025 06:44:44 GMT
etag: "67e572be-5b3a1"
expires: Thu, 30 Apr 2026 06:44:44 GMT
last-modified: Thu, 27 Mar 2025 15:46:06 GMT
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Request 16: https://lab42.uva.nl/fav/favicon-32x32.png

URL: https://lab42.uva.nl/fav/favicon-32x32.png
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Request Headers:

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Response Headers:

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content-length: 1573
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date: Wed, 30 Apr 2025 06:44:47 GMT
etag: "67e543b8-625"
expires: Thu, 30 Apr 2026 06:44:47 GMT
last-modified: Thu, 27 Mar 2025 12:25:28 GMT
referrer-policy: strict-origin-when-cross-origin
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