Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
www.ezojs.com/identity.js	900.0 s	101.7 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
client.aps.amazon-adsystem.com/publisher.js	3600.0 s	82.4 KiB
www.ezojs.com/ezoic/sa.min.js	600.0 s	65.8 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
go.ezodn.com/ezoic/ezorca.min.js	14400.0 s	74.3 KiB
/signals/config/973535300821278?v=2.9.303&r=stable&domain...	1200.0 s	45.9 KiB
static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.min.js	900.0 s	37.2 KiB
cdn.id5-sync.com/api/1.0/id5-api.js	3600.0 s	34.6 KiB
cdn.id5-sync.com/api/1.0/id5PrebidModule.js	3600.0 s	29.4 KiB
/mysidia/23d6fddffbfbc0c895172a6366be7687.js?tag=video_mr...	86400.0 s	54.6 KiB
/mysidia/407ec6ab7422a4db180789e005c9d251.js?tag=video_mr...	86400.0 s	54.2 KiB
/accounts/21528/uploads/pollswebinar-b22b87b59a6989e21407...	1209600.0 s	203.0 KiB
s0.2mdn.net/879366/express_html_inpage_rendering_lib_200_287.js	86400.0 s	40.9 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
ep2.adtrafficquality.google/sodar/VFc2VJAc.js	3000.0 s	14.0 KiB
img.youtube.com/vi/eMSe4VZlxHI/hqdefault.jpg	7200.0 s	11.2 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	11.9 KiB
cdn.popupsmart.com/uploaded/df75579e750a8914435fe976c4a24fda.jpeg	1209600.0 s	79.0 KiB
connectid.analytics.yahoo.com/connectId-gpt.js	3600.0 s	9.0 KiB
tagan.adlightning.com/ezoic-3/op.js	3600.0 s	8.8 KiB
/mysidia/9475976b3d2af33fba37207c76515039.js?tag=addon/my...	86400.0 s	16.7 KiB
static.criteo.net/js/ld/publishertag.ids.js	86400.0 s	14.8 KiB
eus.rubiconproject.com/usync.js	46613.0 s	11.5 KiB
tags.crwdcntrl.net/lt/c/16589/sync.min.js	86400.0 s	13.5 KiB
static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.css	900.0 s	5.7 KiB
cdn.popupsmart.com/uploaded/f6323896112abba738f0b5339d195f61.png	1209600.0 s	45.0 KiB
cdn.popupsmart.com/uploaded/c742c2a17d1ae14429efe5a97edebd41.png	1209600.0 s	36.9 KiB
a.amxrtb.com/js/cframe.js#gdpr=0&gdpr_consent=&cc=BR	14400.0 s	5.1 KiB
/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader...	2849.0 s	3.9 KiB
the.gatekeeperconsent.com/cmp.min.js	300.0 s	3.0 KiB
invstatic101.creativecdn.com/encrypted-signals/encrypted-tag-g.js	0.0 ms	2.9 KiB
config.aps.amazon-adsystem.com/configs/aa05931b-5308-4ea3-95a2-adf84f4ffde4	3600.0 s	2.9 KiB
cdn.popupsmart.com/uploaded/6cfed2455a4615d599e69c1ca3cbc3d7.jpeg	1209600.0 s	13.5 KiB
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite.js	1209600.0 s	10.5 KiB
id5-sync.com/c/457/0/8/1.gif?gdpr=0&gdpr_consent=&us_privacy=	0.0 ms	1.0 KiB
id5-sync.com/c/457/0/8/1.gif?gdpr=0&gdpr_consent=&us_privacy=	0.0 ms	1.0 KiB
/pagead/js/r20260422/r20110914/elements/html/interstitial...	1209600.0 s	9.8 KiB
/pagead/js/r20260422/r20110914/client/qs_click_protection...	1209600.0 s	8.6 KiB
/pagead/js/r20260421/r20110914/client/qs_click_protection...	1209600.0 s	8.5 KiB
cmp.gatekeeperconsent.com/min.js	0.0 ms	852 B
tpc.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js	1209600.0 s	8.4 KiB
go.ezodn.com/utilcave_com/ezoicbwa.png	86400.0 s	1.8 KiB
cdn.popupsmart.com/uploaded/f81012b28668e613ce9719390e694fc0.png	1209600.0 s	6.8 KiB
cdn.popupsmart.com/assets/empty.png	1209600.0 s	6.8 KiB
/pagead/js/r20260422/r20110914/elements/html/fullscreen_a...	1209600.0 s	6.7 KiB
rules.quantcount.com/rules-p-31iz6hfFutd16.js	3600.0 s	630 B
/mysidia/eb506c874c4df599e8b527ba6b052c54.js?tag=engine/c...	86400.0 s	1.2 KiB
/pagead/js/r20260421/r20110914/elements/html/omrhp.js	1209600.0 s	4.7 KiB
link.rubiconproject.com/magnite/21150.js	45800.0 s	855 B
d9.flashtalking.com/img/img.png?cnx=4153cefa2085875d29c6fe925d5b24dd	0.0 ms	241 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.3 KiB
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.2 KiB
cdn.jsdelivr.net/gh/prebid/shared-id/pubcid.js/docs/pubcid.min.js	604800.0 s	981 B
/pagead/js/r20260421/r20110914/client/load_preloaded_reso...	1209600.0 s	840 B
/tr/?id=973535300821278&ev=Purchase&dl=https%3A%2F%2Fjewi...	0.0 ms	16 B
/mysidia/9475976b3d2af33fba37207c76515039.js?tag=addon/my...	86400.0 s	0 B
tpc.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js	1209600.0 s	0 B
/pagead/js/r20260421/r20110914/client/qs_click_protection...	1209600.0 s	0 B
img.youtube.com/vi/eMSe4VZlxHI/hqdefault.jpg	7200.0 s	0 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js	1209600.0 s	0 B
/mysidia/eb506c874c4df599e8b527ba6b052c54.js?tag=engine/c...	86400.0 s	0 B
/pagead/js/r20260421/r20110914/client/load_preloaded_reso...	1209600.0 s	0 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.023239] map[node:map[boundingRect:map[bottom:2261 height:84 left:10 right:403 top:2177 width:393] lhId:page-20-DIV nodeLabel:EXPLORE path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,2,DIV selector:div.bg-flesh > div.d-flex > div.d-flex > div.justify-content-center snippet:<div class="justify-content-center d-flex justify-content-center align-items-center te…" data-v-63a325e7=""> type:node] score:0.022976 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2121 height:247 left:21 right:391 top:1874 width:371] lhId:page-2-IMG nodeLabel:div.d-flex > div.d-flex > div.d-flex > img.m-2 path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.d-flex > div.d-flex > div.d-flex > img.m-2 snippet:<img src="/_nuxt/ancient-jewish-history.CH0rC6of.webp" class="m-2" style="box-shadow:5px 5px 0px 0px #C38D00;" data-v-63a325e7=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:155 height:42 left:190 right:377 top:113 width:187] lhId:page-22-DIV nodeLabel:div#header > div.d-flex > div.d-flex > div.search-container path:1,HTML,1,BODY,2,DIV,0,DIV,1,DIV,2,DIV,1,DIV,0,DIV selector:div#header > div.d-flex > div.d-flex > div.search-container snippet:<div class="search-container d-flex justify-content-end" data-v-f80de7ef="" data-v-4b72c19a=""> type:node] score:0.000263 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2121 height:247 left:21 right:391 top:1874 width:371] lhId:page-2-IMG nodeLabel:div.d-flex > div.d-flex > div.d-flex > img.m-2 path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.d-flex > div.d-flex > div.d-flex > img.m-2 snippet:<img src="/_nuxt/ancient-jewish-history.CH0rC6of.webp" class="m-2" style="box-shadow:5px 5px 0px 0px #C38D00;" data-v-63a325e7=""> type:node]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.198803] map[node:map[boundingRect:map[bottom:3085 height:1371 left:0 right:412 top:1714 width:412] lhId:page-23-DIV nodeLabel:HISTORICAL TIMELINES Discover key moments in Jewish history, from ancient times… path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV selector:div > div.row > div.text-black > div.text-black snippet:<div class="text-black row d-flex py-5 px-5"> type:node] score:0.198363 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2121 height:247 left:21 right:391 top:1874 width:371] lhId:page-2-IMG nodeLabel:div.d-flex > div.d-flex > div.d-flex > img.m-2 path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.d-flex > div.d-flex > div.d-flex > img.m-2 snippet:<img src="/_nuxt/ancient-jewish-history.CH0rC6of.webp" class="m-2" style="box-shadow:5px 5px 0px 0px #C38D00;" data-v-63a325e7=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:155 height:42 left:190 right:377 top:113 width:187] lhId:page-22-DIV nodeLabel:div#header > div.d-flex > div.d-flex > div.search-container path:1,HTML,1,BODY,2,DIV,0,DIV,1,DIV,2,DIV,1,DIV,0,DIV selector:div#header > div.d-flex > div.d-flex > div.search-container snippet:<div class="search-container d-flex justify-content-end" data-v-f80de7ef="" data-v-4b72c19a=""> type:node] score:0.00044 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2121 height:247 left:21 right:391 top:1874 width:371] lhId:page-2-IMG nodeLabel:div.d-flex > div.d-flex > div.d-flex > img.m-2 path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.d-flex > div.d-flex > div.d-flex > img.m-2 snippet:<img src="/_nuxt/ancient-jewish-history.CH0rC6of.webp" class="m-2" style="box-shadow:5px 5px 0px 0px #C38D00;" data-v-63a325e7=""> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.004457] map[node:map[boundingRect:map[bottom:845 height:108 left:0 right:423 top:737 width:423] lhId:page-27-INS nodeLabel:Advertisement path:1,HTML,20,INS selector:ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 snippet:<ins id="gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0" data-google-query-id="COW8g_6-gpQDFdVSuAQdD_EA9A" data-anchor-status="displayed" data-anchor-shown="true" style="display: block; max-width: none; width: 100% !important;"> type:node] score:0.000718] map[node:map[boundingRect:map[bottom:845 height:108 left:0 right:423 top:737 width:423] lhId:page-27-INS nodeLabel:Advertisement path:1,HTML,20,INS selector:ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 snippet:<ins id="gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0" data-google-query-id="COW8g_6-gpQDFdVSuAQdD_EA9A" data-anchor-status="displayed" data-anchor-shown="true" style="display: block; max-width: none; width: 100% !important;"> type:node] score:0.000664 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2121 height:247 left:21 right:391 top:1874 width:371] lhId:page-2-IMG nodeLabel:div.d-flex > div.d-flex > div.d-flex > img.m-2 path:1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,2,DIV,0,DIV,0,DIV,2,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.d-flex > div.d-flex > div.d-flex > img.m-2 snippet:<img src="/_nuxt/ancient-jewish-history.CH0rC6of.webp" class="m-2" style="box-shadow:5px 5px 0px 0px #C38D00;" data-v-63a325e7=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:845 height:103 left:6 right:418 top:742 width:412] lhId:page-28-IFRAME nodeLabel:Advertisement path:1,HTML,20,INS,1,DIV,0,IFRAME selector:ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 > div#google_ads_iframe_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0__container__ > iframe#google_ads_iframe_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 snippet:<iframe frameborder="0" src="https://acb0ba6c5abc3caf78d7c1f9d1ae2427.safeframe.googlesyndication.com/s…" id="google_ads_iframe_/23057360293,22907843112/jewishvirtuallibrary_org-medrec…" name="" scrolling="no" marginwidth="0" marginheight="0" width="412" height="103" data-is-safeframe="true" sandbox="allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin …" allow="private-state-token-redemption;attribution-reporting" aria-label="Advertisement" tabindex="0" data-google-container-id="1" style="border: 0px; vertical-align: bottom; max-height: 50vh !important;" …> type:node] score:0.000658] map[node:map[boundingRect:map[bottom:845 height:108 left:0 right:423 top:737 width:423] lhId:page-27-INS nodeLabel:Advertisement path:1,HTML,20,INS selector:ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 snippet:<ins id="gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0" data-google-query-id="COW8g_6-gpQDFdVSuAQdD_EA9A" data-anchor-status="displayed" data-anchor-shown="true" style="display: block; max-width: none; width: 100% !important;"> type:node] score:0.000568] map[node:map[boundingRect:map[bottom:845 height:108 left:0 right:423 top:737 width:423] lhId:page-27-INS nodeLabel:Advertisement path:1,HTML,20,INS selector:ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 snippet:<ins id="gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0" data-google-query-id="COW8g_6-gpQDFdVSuAQdD_EA9A" data-anchor-status="displayed" data-anchor-shown="true" style="display: block; max-width: none; width: 100% !important;"> type:node] score:0.000496]]

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
jewishvirtuallibrary.org/_nuxt/Roboto-SemiBold.EVIM0_1H.ttf	520 ms
jewishvirtuallibrary.org/_nuxt/Gudea-Regular.DzAcgoRL.ttf	45 ms
jewishvirtuallibrary.org/_nuxt/Roboto-Regular.CN_pkOMA.ttf	40 ms
jewishvirtuallibrary.org/_nuxt/Roboto-Bold._ZJd4Sbe.ttf	35 ms
jewishvirtuallibrary.org/_nuxt/Gudea-Bold.hZKtxVqa.ttf	35 ms
/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...	5.0 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:11.695 source:map[column:24639 line:1 type:source-location url:https://go.ezodn.com/ezoic/ezorca.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:46.881 source:map[type:text value:[unattributed]]] map[reflowTime:33.465 source:map[column:18 line:44 type:source-location url: urlProvider:network]] map[reflowTime:11.695 source:map[column:23774 line:0 type:source-location url:https://go.ezodn.com/ezoic/ezorca.min.js urlProvider:network]] map[reflowTime:0.503 source:map[column:163 line:18 type:source-location url:https://go.ezodn.com/hb/dall.js?cb=195-1-157 urlProvider:network]] map[reflowTime:0.152 source:map[column:48217 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31098007 urlProvider:network]] map[reflowTime:2.453 source:map[column:241859 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31098007 urlProvider:network]] map[reflowTime:0.546 source:map[column:61643 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31098007 urlProvider:network]] map[reflowTime:1.919 source:map[column:575316 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31098007 urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/modern-jewish-history.B275WmxT.webp	352.8 KiB	306.1 KiB
Popup Image `div > div > div#image-cr089nawhnc0 > img`	/accounts/21528/uploads/pollswebinar-b22b87b59a6989e21407...	202.1 KiB	137.7 KiB
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/ancient-jewish-history.CH0rC6of.webp	134.1 KiB	88.4 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/11/1be41f9b-1f29-4b69-9a74-6ceb724e...	110.0 KiB	66.9 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/3/6c87d582-e993-4811-9f24-1234b0b51...	79.6 KiB	49.6 KiB
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`	jewishvirtuallibrary.org/_nuxt/IsraelFlag.DqZRK-Do.jpeg	63.0 KiB	45.5 KiB
div#header > div.d-flex > div.col > img.logo `div#header > div.d-flex > div.col > img.logo`	jewishvirtuallibrary.org/_nuxt/jvl-logo-white.BD6jMrbI.png	40.8 KiB	39.5 KiB
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/history-of-jerusalem.C77BYNka.png	81.6 KiB	35.5 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/7/f848b9d2-13d0-4e83-a1eb-851805e8a...	66.9 KiB	35.4 KiB
swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/1/48f62870-07ac-48fe-a253-9ee4fc3f3...	74.2 KiB	31.2 KiB
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`	jewishvirtuallibrary.org/_nuxt/world-map.LtxKRr9f.jpg	42.6 KiB	30.8 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/5/41d3ba5f-a76a-4f5a-aa24-f5568839b...	60.6 KiB	17.6 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/13/17e59cc1-7d9c-4d9f-9e90-1d843ccd...	55.0 KiB	17.4 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/9/53f4f324-9f62-41af-8df1-b514d5155...	46.0 KiB	15.6 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/12/b3f3c705-2e4e-4b0e-9ff6-a05bcc99...	58.3 KiB	15.3 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/10/27418e5a-1536-4f97-b368-fac9fc9d...	32.1 KiB	13.7 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/15/50cc2757-2bcf-491f-a136-0ea1bc3b...	53.3 KiB	9.6 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/14/85c365b9-f034-453b-977d-535b9cc6...	15.7 KiB	8.0 KiB
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`	/storage/uploads/wing/8/ca81734c-3360-43ca-80c8-a74187507...	36.1 KiB	5.8 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-19-IMG

nodeLabel: div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full

path: 1,HTML,1,BODY,2,DIV,0,DIV,3,DIV,2,DIV,0,DIV,2,DIV,1,SWIPER-CONTAINER,0,SWIPER-SLIDE,0,IMG

selector: div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full

snippet: <img data-v-db7a4aa6="" src="https://jewishvirtuallibrary.org/_nuxt/monkmap-1.BOODmNVO.png" class="w-full object-contain slide-img">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
fonts.googleapis.com/icon?family=Material+Icons	817 B	832 ms
cmp.gatekeeperconsent.com/min.js	852 B	802 ms
the.gatekeeperconsent.com/cmp.min.js	3.0 KiB	956 ms
jewishvirtuallibrary.org/_nuxt/entry.C6JJf5oE.css	110.3 KiB	2.7 s
jewishvirtuallibrary.org/_nuxt/SearchInput.DNhX8R94.css	883 B	513 ms
jewishvirtuallibrary.org/_nuxt/BottomAds.BHAten-p.css	588 B	513 ms
jewishvirtuallibrary.org/_nuxt/index.BQTXiVwi.css	1.4 KiB	513 ms
jewishvirtuallibrary.org/_nuxt/Modal.BCP-SsRE.css	846 B	513 ms
jewishvirtuallibrary.org/_nuxt/default.D9uVWmON.css	1.9 KiB	513 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css	19.1 KiB	1.6 s

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
HISTORICAL TIMELINES Discover key moments in Jewish history, from ancient times… `div > div.row > div.text-black > div.text-black`	0.198
EXPLORE `div.bg-flesh > div.d-flex > div.d-flex > div.justify-content-center`	0.023
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.001
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.001
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0 > div#google_ads_iframe_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0__container__ > iframe#google_ads_iframe_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.001
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.001
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
div#header > div.d-flex > div.d-flex > div.search-container `div#header > div.d-flex > div.d-flex > div.search-container`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
div#header > div.d-flex > div.d-flex > div.search-container `div#header > div.d-flex > div.d-flex > div.search-container`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000
Advertisement `ins#gpt_unit_/23057360293,22907843112/jewishvirtuallibrary_org-medrectangle-2_0`	0.000

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 820 ms 151.4 KiB

URL	Transfer Size	Est Savings
jewishvirtuallibrary.org/_nuxt/entry.C6JJf5oE.css	109.8 KiB	108.8 KiB
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css	18.4 KiB	18.4 KiB
go.ezodn.com/ezvideo/ezvideojscss.css?cb=191	13.8 KiB	13.8 KiB
cdn.popupsmart.com/accounts/21528/218978/22/main.css	10.4 KiB	10.4 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.5 s 2.3 MiB

URL	Transfer Size	Est Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.8 KiB	161.8 KiB
go.ezodn.com/beardeddragon/wyvern.js?cb=191	181.5 KiB	161.0 KiB
cdn.popupsmart.com/accounts/21528/218978/22/main.js	215.9 KiB	156.0 KiB
cdn.popupsmart.com/accounts/21528/9928/14/main.js	190.3 KiB	138.6 KiB
cdn.popupsmart.com/accounts/21528/166618/8/main.js	189.7 KiB	136.0 KiB
cdn.popupsmart.com/accounts/21528/7495/21/main.js	190.6 KiB	135.9 KiB
cdn.popupsmart.com/accounts/21528/7337/21/main.js	191.0 KiB	132.4 KiB
go.ezodn.com/hb/dall.js?cb=195-1-157	235.1 KiB	120.6 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js	146.2 KiB	110.5 KiB
www.googletagmanager.com/gtag/js?id=AW-16993759482&cx=c&gtm=4e64k0	137.3 KiB	101.5 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	187.7 KiB	84.7 KiB
jewishvirtuallibrary.org/_nuxt/C7KtkeID.js	148.7 KiB	76.8 KiB
www.googletagmanager.com/gtag/js?id=G-PPRBG64R7T&cx=c&gtm=4e64k0	174.6 KiB	76.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-MRW3HCKV	143.2 KiB	65.0 KiB
www.googletagmanager.com/gtag/js?id=UA-90790627-1	124.9 KiB	60.3 KiB
jewishvirtuallibrary.org/_nuxt/BAIthYij.js	104.4 KiB	59.0 KiB
www.ezojs.com/identity.js	101.2 KiB	57.9 KiB
www.googletagmanager.com/gtag/js?id=DC-15691174&cx=c&gtm=4e64k0	129.1 KiB	56.2 KiB
www.googletagmanager.com/gtag/js?id=AW-16993759482	137.3 KiB	51.4 KiB
go.ezodn.com/detroitchicago/portland.js?gcb=1&cb=c2dd6af0a3	65.4 KiB	48.2 KiB
go.ezodn.com/detroitchicago/indy.js?cb=117&gcb=0	95.1 KiB	47.8 KiB
client.aps.amazon-adsystem.com/publisher.js	82.0 KiB	45.0 KiB
go.ezodn.com/porpoiseant/ezadloadrewarded.js?cb=1048&gcb=195-1	62.5 KiB	40.2 KiB
go.ezodn.com/beardeddragon/iguana.js?cb=f1a1972d09	40.2 KiB	37.1 KiB
jewishvirtuallibrary.org/_nuxt/CJr9Iqje.js	75.6 KiB	35.7 KiB
go.ezodn.com/beardeddragon/gilamonster.js?cb=a8e6cfba0b	36.8 KiB	35.0 KiB
static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.min.js	36.7 KiB	34.0 KiB
go.ezodn.com/ezoic/ezorca.min.js	73.7 KiB	34.0 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.1 KiB
www.ezojs.com/ezoic/sa.min.js	65.3 KiB	32.4 KiB
go.ezodn.com/beardeddragon/turtle.js?gcb=1&cb=25435cf232	23.7 KiB	21.9 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	4.3 s	1.1 s	0.0 ms
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	3.6 s	3.3 s	77 ms
/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader...	2.6 s	2.2 s	9.8 ms
jewishvirtuallibrary.org/	2.4 s	170 ms	23 ms
jewishvirtuallibrary.org/_nuxt/BAIthYij.js	2.3 s	656 ms	0.7 ms
go.ezodn.com/detroitchicago/portland.js?gcb=1&cb=c2dd6af0a3	1.7 s	1.6 s	40 ms
go.ezodn.com/ezoic/ezorca.min.js	1.1 s	924 ms	62 ms
jewishvirtuallibrary.org/porpoiseant/jellyfish.js?a=a&cb=21&dcb=195-1&shcb=34	1.0 s	922 ms	12 ms
jewishvirtuallibrary.org/_nuxt/CrUIaL8u.js	797 ms	756 ms	0.7 ms
jewishvirtuallibrary.org/cdn-cgi/challenge-platform/scripts/jsd/main.js	653 ms	624 ms	12 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	648 ms	347 ms	111 ms
www.googletagmanager.com/gtag/js?id=DC-15691174&cx=c&gtm=4e64k0	523 ms	470 ms	49 ms
tagan.adlightning.com/ezoic-3/b-cf5bcc9-3c36b56e.js	511 ms	445 ms	9.5 ms
go.ezodn.com/hb/dall.js?cb=195-1-157	465 ms	361 ms	92 ms
www.googletagmanager.com/gtag/js?id=AW-16993759482	451 ms	345 ms	83 ms
client.aps.amazon-adsystem.com/publisher.js	375 ms	285 ms	43 ms
www.googletagmanager.com/gtag/js?id=G-PPRBG64R7T&cx=c&gtm=4e64k0	363 ms	285 ms	74 ms
go.ezodn.com/porpoiseant/ezhbvignette.js?cb=1048	360 ms	325 ms	11 ms
cdn.popupsmart.com/bundle.js	325 ms	305 ms	11 ms
tagan.adlightning.com/ezoic-3/op.js	294 ms	285 ms	2.6 ms
www.googletagmanager.com/gtm.js?id=GTM-MRW3HCKV	288 ms	215 ms	69 ms
ez-standalone.js	281 ms	273 ms	0.0 ms
go.ezodn.com/detroitchicago/indy.js?cb=117&gcb=0	249 ms	204 ms	43 ms
connect.facebook.net/en_US/fbevents.js	212 ms	166 ms	44 ms
www.googletagmanager.com/gtag/js?id=UA-90790627-1	212 ms	162 ms	48 ms
tagan.adlightning.com/ezoic-3/bl-0d6ee0c-300f8633.js	203 ms	156 ms	46 ms
www.ezojs.com/ezoic/sa.min.js	174 ms	141 ms	30 ms
www.ezojs.com/identity.js	166 ms	121 ms	44 ms
imasdk.googleapis.com/js/sdkloader/ima3.js	163 ms	99 ms	63 ms
/signals/config/973535300821278?v=2.9.303&r=stable&domain...	162 ms	137 ms	24 ms
go.ezodn.com/beardeddragon/wyvern.js?cb=191	159 ms	76 ms	82 ms
cdn.popupsmart.com/accounts/21528/218978/22/main.js	144 ms	132 ms	4.8 ms
static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.min.js	141 ms	15 ms	125 ms
cdn.popupsmart.com/accounts/21528/7337/21/main.js	137 ms	117 ms	4.5 ms
go.ezodn.com/porpoiseant/ezadloadrewarded.js?cb=1048&gcb=195-1	137 ms	104 ms	31 ms
cdn.popupsmart.com/accounts/21528/7495/21/main.js	123 ms	81 ms	4.3 ms
cdn.id5-sync.com/api/1.0/id5-api.js	122 ms	95 ms	15 ms
cdn.popupsmart.com/accounts/21528/166618/8/main.js	112 ms	82 ms	4.3 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	109 ms	93 ms	15 ms
config.aps.amazon-adsystem.com/configs/aa05931b-5308-4ea3-95a2-adf84f4ffde4	104 ms	89 ms	11 ms
ep2.adtrafficquality.google/sodar/sodar2.js	102 ms	92 ms	2.7 ms
www.googletagmanager.com/gtag/js?id=AW-16993759482&cx=c&gtm=4e64k0	94 ms	32 ms	61 ms
static.criteo.net/js/ld/publishertag.ids.js	63 ms	54 ms	7.9 ms
www.google-analytics.com/analytics.js	63 ms	55 ms	6.8 ms
cdn.popupsmart.com/accounts/21528/9928/14/main.js	60 ms	45 ms	6.2 ms
oa.openxcdn.net/esp.js	52 ms	46 ms	3.2 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	19.2 s
Other	5.4 s
Style & Layout	1.7 s
Script Parsing & Compilation	1.7 s
Garbage Collection	681 ms
Rendering	637 ms
Parse HTML & CSS	324 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/_nuxt/vecteezy_the-great-synagogue-of-budapest-hungary_1...	1.3 MiB
jewishvirtuallibrary.org/_nuxt/Iran-Jews.BhnSQeFI.jpg	834.1 KiB
/_nuxt/vecteezy_overview-of-the-western-wall-in-jerusalem...	815.5 KiB
jewishvirtuallibrary.org/_nuxt/header-bg.CVNV2ZZK.jpg	774.8 KiB
jewishvirtuallibrary.org/_nuxt/Yemen_Jews_Rosh_Ha-Ayin-scaled.NgUQ3Vq5.jpg	585.7 KiB
/_nuxt/Rabbi_Menachem_Mendel_Schneerson-scaled.DiWa-9HO.jpg	478.3 KiB
/videoplayback?expire=1776925217&ei=oUnpaZOJGM331sQPl8yko...	475.9 KiB
/videoplayback?expire=1776925217&ei=oUnpaZPZJZOA-LAP07q9g...	475.9 KiB
jewishvirtuallibrary.org/_nuxt/library2.C-wS2LwI.jpg	457.6 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	362.4 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	jewishvirtuallibrary.org/_nuxt/Yemen_Jews_Rosh_Ha-Ayin-scaled.NgUQ3Vq5.jpg
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	/_nuxt/Rabbi_Menachem_Mendel_Schneerson-scaled.DiWa-9HO.jpg
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	/_nuxt/vecteezy_the-great-synagogue-of-budapest-hungary_1...
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	/_nuxt/vecteezy_overview-of-the-western-wall-in-jerusalem...
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	jewishvirtuallibrary.org/_nuxt/Iran-Jews.BhnSQeFI.jpg
div#header > div.d-flex > div.col > img.logo `div#header > div.d-flex > div.col > img.logo`	jewishvirtuallibrary.org/_nuxt/jvl-logo-white.BD6jMrbI.png
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/modern-jewish-history.B275WmxT.webp
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	jewishvirtuallibrary.org/_nuxt/monkmap-1.BOODmNVO.png
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	jewishvirtuallibrary.org/_nuxt/Palmach.Bu6Hzfl3.png
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`	jewishvirtuallibrary.org/_nuxt/IsraelFlag.DqZRK-Do.jpeg
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`	jewishvirtuallibrary.org/_nuxt/world-map.LtxKRr9f.jpg
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`	jewishvirtuallibrary.org/_nuxt/maghensyn_Lebanon.xZZoohKh.png
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/ancient-jewish-history.CH0rC6of.webp
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`	jewishvirtuallibrary.org/_nuxt/history-of-jerusalem.C77BYNka.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Document request latency

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 13 user timings

●Avoid long main-thread tasks 20 long tasks found

●Network Requests

●Network Round Trip Times 210 ms

●Server Backend Latencies 500 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 550 ms

○INP breakdown

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.d-flex > div.d-flex > div.d-flex > button.btn-small `div.d-flex > div.d-flex > div.d-flex > button.btn-small`

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#header > div.d-flex > div.col > img.logo `div#header > div.d-flex > div.col > img.logo`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide.swiper-slide-next > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide.swiper-slide-next > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.col > div.d-flex > div.d-flex > a.router-link-active `div.col > div.d-flex > div.d-flex > a.router-link-active`
div.col > div.d-flex > div.d-flex > a.router-link-active `div.col > div.d-flex > div.d-flex > a.router-link-active`
div.col > div.d-flex > div.d-flex > a.router-link-active `div.col > div.d-flex > div.d-flex > a.router-link-active`
div.col > div.d-flex > div.d-flex > a.router-link-active `div.col > div.d-flex > div.d-flex > a.router-link-active`
div.col > div.d-flex > div.d-flex > a.router-link-active `div.col > div.d-flex > div.d-flex > a.router-link-active`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
EXPLORE `div.d-flex > div.justify-content-center > div.border > span.fs-12`
EXPLORE `div.d-flex > div.justify-content-center > div.border > span.fs-12`
EXPLORE `div.d-flex > div.justify-content-center > div.border > span.fs-12`

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These are opportunities to improve the interpretation of your content by users in different locales.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Click on the Mailbox to Subscribe `div#form-cr6m0ygpjo80 > div#button-wrapper-cr6m0ygpg800 > div > button#form-button-cr6m0ygpkio0`

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<html>` element has a valid value for its `[lang]` attribute

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Links are distinguishable without relying on color.

○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader...
SharedStorage	jewishvirtuallibrary.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	jewishvirtuallibrary.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	jewishvirtuallibrary.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Topics	go.ezodn.com/hb/dall.js?cb=195-1-157 line 137, col 1151
AttributionReporting	www.googletagmanager.com/gtag/js?id=AW-16993759482 line 549, col 244

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://a.teads.tv failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://direct.adsrvr.org failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://direct.adsrvr.org failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://fastlane.rubiconproject.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://fastlane.rubiconproject.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://hbopenbid.pubmatic.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://hbopenbid.pubmatic.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://ib.adnxs.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://ib.adnxs.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://onetag-sys.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://onetag-sys.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prebid.a-mo.net failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prebid.media.net failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prebid.trustedstack.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prg.smartadserver.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prg.smartadserver.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://prg.smartadserver.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://targeting.unrulymedia.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://tlx.3lift.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://tlx.3lift.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://web.ads.aps.amazon-adsystem.com failed.`
jewishvirtuallibrary.org/	`Attestation check for Protected Audience on https://web.ads.aps.amazon-adsystem.com failed.`
api.rlcdn.com/api/identity/envelope?pid=14067	`Failed to load resource: the server responded with a status of 451 ()`

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Library Wings `div#header > div.d-flex > div.d-flex > a.position-relative`
About `div#header > div.d-flex > div.d-flex > a.position-relative`
Bookstore `div#header > div.d-flex > div.d-flex > a.position-relative`
Glossary `div#header > div.d-flex > div.d-flex > a.position-relative`
Links `div#header > div.d-flex > div.d-flex > a.position-relative`
Publications `div#header > div.d-flex > div.d-flex > a.position-relative`
Timelines `div#header > div.d-flex > div.d-flex > a.position-relative`
Virtual Tours `div#header > div.d-flex > div.d-flex > a.position-relative`

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#header > div.d-flex > div.col > img.logo `div#header > div.d-flex > div.col > img.logo`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full `div.col > swiper-container.slide-container > swiper-slide#slide > img.w-full`
swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide.swiper-slide-active > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide.swiper-slide-next > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide.swiper-slide-next > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover `swiper-slide > a.cursor-pointer > div.border-solid > img.object-cover`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.d-flex > img.m-2 `div.d-flex > div.d-flex > div.d-flex > img.m-2`
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`
div.d-flex > div.d-flex > div.col > img.p-8 `div.d-flex > div.d-flex > div.col > img.p-8`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●robots.txt is valid

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`