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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

53

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.

RequestCache TTLTransfer Size
m.tau.ac.il/sites/default/files/videos/University%20B%20Landing%20360X420.mp40.0 ms952.6 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
m.tau.ac.il/900.0 s74.7 KiB
/signals/config/2056112367996381?v=2.9.303&r=stable&domai...1200.0 s46.7 KiB
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js86400.0 s33.5 KiB
/signals/config/379993301072762?v=2.9.303&r=stable&domain...1200.0 s3.5 KiB
connect.facebook.net/he_IL/all.js1200.0 s1.7 KiB
/tr/?id=2056112367996381&ev=PageView&dl=https%3A%2F%2Fm.t...0.0 ms16 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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-0-VIDEO
nodeLabel: div > div#banner-35391 > div.rbanner--field-video-background-mobile > video
path: 1,HTML,1,BODY,3,DIV,0,DIV,0,DIV,2,HEADER,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,VIDEO
selector: div > div#banner-35391 > div.rbanner--field-video-background-mobile > video
snippet: <video autoplay="autoplay" loop="loop" muted="muted" width="360" height="420" preload="auto" playsinline="playsinline" poster="/">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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.

URLTransfer SizeDuration
/sites/default/files/advagg_css/css__8aEPx9XPJqm7pbJGdR96...3.8 KiB
/sites/default/files/advagg_css/css__Gn5SoY4QqkD7wrc0Ydiz...3.4 KiB150 ms
/sites/default/files/advagg_css/css__AV5xcOGZg_I77tvHWRNt...4.5 KiB
/sites/default/files/advagg_css/css__aU0Qy1v-ZpTQ6jMGoQ5t...658 B
/sites/default/files/advagg_css/css__oK3np-8KmN17ihtX_Bld...610 B
/sites/default/files/advagg_css/css__iLpeHsYS0QF-ZcTVgg-b...961 B
/sites/default/files/advagg_css/css__QPpuxSMZHrLF3qiHCywD...126 B
/sites/default/files/advagg_css/css__beLOjpMY0ZwqDr4mNtSB...217 B
/sites/default/files/advagg_css/css__H5YGiVL-4Wun7XTvnA8F...583 B
/sites/default/files/advagg_css/css__ULr9kM8V9Xx03K7xa7QZ...4.5 KiB
/sites/default/files/advagg_css/css__jrX0pHePKX0PI2N-f5GN...430 B
/sites/default/files/advagg_css/css__m9nz5JbmKPKGHRmXBm81...274 B
/sites/default/files/advagg_css/css__bYZGgIkve1nAr_7ZxfxW...2.1 KiB
/sites/default/files/advagg_css/css__jFN7RRQuqOSUwVZx-xQV...23.7 KiB150 ms
/sites/default/files/advagg_css/css__UbQRNjMYVeVDLRftVzuv...396 B
/sites/default/files/advagg_css/css__hWqZs6lJYp_uN1OCE-1-...1.7 KiB
/sites/default/files/advagg_css/css__46UnqllGQ-aCe5eGMxKZ...976 B
/sites/default/files/advagg_css/css__7XNjW_EfCrAU2XHADrTS...480 B
/sites/default/files/advagg_css/css__ldZcRVgnqYa6OupKM9MR...780 B
/sites/default/files/advagg_css/css__ePTtQvvl8pgKYI_Q5XnR...684 B
/sites/default/files/advagg_css/css__BNJEqmkYQiOMVP1BHC8O...702 B
/sites/default/files/advagg_css/css__P-eVPqylkLPUxzyCRjFs...1.2 KiB
/sites/default/files/advagg_css/css__j3177R-9llbqTij13UVh...1.4 KiB
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js33.5 KiB901 ms

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.

URLResource SizeEst Savings
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
/sites/default/files/styles/image480x270/public/spring bo...30.3 KiB9.3 KiB
לוגו אוניברסיטת תל אביב div.content > div.tau_main_footer_block > div.tau-main-footer-block-logo > img
m.tau.ac.il/sites/default/files/footer_logo/TAU_MOBILE_logo-footer.png9.0 KiB6.0 KiB
div.news-box-container > div.news-item > picture > img.news-image-fit div.news-box-container > div.news-item > picture > img.news-image-fit
/sites/default/files/styles/container_block_255_140/publi...11.3 KiB5.4 KiB
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
m.tau.ac.il/sites/default/files/styles/image480x270/public/war-2026-580_3.webp25.7 KiB4.6 KiB

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.9 s
URLTime Spent
tau.ac.il/1.1 s
www.tau.ac.il/881 ms
m.tau.ac.il/0.0 ms

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.

Diagnostics

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: 1.2 s 255.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-23ZQ6638VM&cx=c&gtm=4e64h1165.3 KiB65.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-TZT2564151.2 KiB63.5 KiB
connect.facebook.net/he_IL/all.js?hash=ae379714d8a1c020fb3b2a93b560275182.7 KiB57.8 KiB
m.tau.ac.il/sites/all/libraries/jquery/jquery.js?v=3.5.182.9 KiB36.1 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB32.8 KiB

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.

CategoryTime Spent
Script Evaluation1.1 s
Other445 ms
Script Parsing & Compilation223 ms
Style & Layout147 ms
Parse HTML & CSS68 ms
Rendering53 ms
Garbage Collection17 ms

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 56.2 KiB
URLTransfer SizeEst Savings
m.tau.ac.il/sites/all/libraries/jquery/jquery.js?v=3.5.182.9 KiB41.8 KiB
m.tau.ac.il/misc/drupal.js?tdudf96.9 KiB4.6 KiB
m.tau.ac.il/sites/all/libraries/jquery/jquery-migrate.js?v=3.4.19.9 KiB4.0 KiB
m.tau.ac.il/misc/jquery-html-prefilter-3.5.0-backport.js?v=3.5.14.4 KiB3.1 KiB
m.tau.ac.il/sites/all/modules/custom/sitetau/js/general.js?tdudf97.4 KiB2.6 KiB

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: 0.0 ms 19.9 KiB
URLTransfer SizeEst Savings
/sites/default/files/advagg_css/css__jFN7RRQuqOSUwVZx-xQV...23.6 KiB19.9 KiB

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

●Layout shift culprits
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoids enormous network payloads Total size was 2,070 KiB
●User Timing marks and measures 7 user timings
●JavaScript execution time 1.1 s
●Avoid long main-thread tasks 11 long tasks found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 320 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 130 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○Avoid non-composited animations
80

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 > div#banner-35391 > div.rbanner-video-ctrl > button#rbanner-video-play div > div#banner-35391 > div.rbanner-video-ctrl > button#rbanner-video-play

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
עצרת יום הזיכרון לחללי מערכות ישראל ופעולות האיבה 2026 div#masonry-item- > a > div.masonry-item > div.masonry-item-body
13/04/2026 div.news-box-container > div.news-item > div.news-bottom > label.news-date
20/04/2026 div.news-box-container > div.news-item > div.news-bottom > label.news-date
20/04/2026 div.news-box-container > div.news-item > div.news-bottom > label.news-date
16/04/2026 div.news-box-container > div.news-item > div.news-bottom > label.news-date
לכל החדשות div.news-total > div.news-bottom-container > div.news-bottom-link > a.news-bottom-text
יום הזיכרון a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
יום הזיכרון a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
29/05/2026, 09:00 div.event-item-inner > a.event-title > div.event-bottom > label.event-date
לכל האירועים div.events-total > div.events-bottom-container > div.events-bottom-link > a.events-bottom-text
פודקאסט a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
פתיחת סמסטר ב' - עדכון לסטודנטים.ות 12.4.26 div#654645 > a > div.masonry-item > div.masonry-item-body
פודקאסט a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
חרבות ברזל a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
לימודים a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
לכבוד האביב: הטבה מיוחדת על כל הפריטים בחנות המותג עד סוף אפריל div#4456456456 > a > div.masonry-item > div.masonry-item-body
דירוגים a > div.masonry-item > div.masonry-item-cat > span.masonry-item-cat-text
קריאה לפעולה, הזמנה לחשוב, לשאול, ולפעול יחד למען עתידה של מדינת ישראל div#masonry-item- > a > div.masonry-item > div.masonry-item-body
הרשמה ללימודים div.spotlights-grid > div#6546546 > div.masonry-register-header-wrapper > span.masonry-register-category
יום שישי | 29.5 | 13:00-9:00 | בקמפוס div#6546546 > div.masonry-register-content > div.masonry-register-body-wrapper > p.masonry-register-body
לפרטים נוספים div.masonry-register-footer > div.masonry-register-button > a.masonry-register-text > span.masonry-register-text-inner
מידע כללי div.tau_main_footer_block > ul.menu > li.first > a
לימודים div.tau_main_footer_block > ul.menu > li.expanded > a
סגל ומינהלה div.tau_main_footer_block > ul.menu > li.expanded > a
נגישות div.tau_main_footer_block > ul.menu > li.expanded > a
אוניברסיטת תל אביב div.full_line > div.width_margin > div.rc-recog-address-wrapper > div.rc-recog-uni-name
P.O. Box 39040, Tel Aviv 6997801 div.full_line > div.width_margin > div.rc-recog-address-wrapper > div.rc-recog-uni-address

These are opportunities to improve the legibility of your content.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

These items highlight common accessibility best practices.

○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-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●Image elements have `[alt]` attributes
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
○`[accesskey]` values are unique
○`[aria-*]` attributes match their roles
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA attributes are used as specified for the element's role
○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 use only permitted ARIA attributes
○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
○`[aria-*]` attributes have valid values
○`[aria-*]` attributes are valid and not misspelled
○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
○`<frame>` or `<iframe>` elements have a title
○`<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
○Form elements have associated labels
○Links are distinguishable without relying on color.
○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
○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.
○Elements with visible text labels have matching accessible names.
○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.
73

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
/sites/default/files/styles/image480x270/public/musical-r...372 x 199 (1.87)480 x 270 (1.78)
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
m.tau.ac.il/sites/default/files/styles/image480x270/public/war-2026-580_3.webp372 x 199 (1.87)480 x 270 (1.78)
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
/sites/default/files/styles/image480x270/public/spring bo...372 x 199 (1.87)480 x 270 (1.78)
a > div.masonry-item > picture > img.masonry-item-image a > div.masonry-item > picture > img.masonry-item-image
/sites/default/files/styles/image480x270/public/WhatsApp ...372 x 199 (1.87)480 x 270 (1.78)

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 / WarningSource
AttributionReporting
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js line 46, col 114

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.

SourceDescription
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js line 191, col 460
Permissions policy violation: unload is not allowed in this document.
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js line 195, col 86
Permissions policy violation: unload is not allowed in this document.
cdn.appdynamics.com/adrum/adrum-23.8.0.4309.js line 194, col 159
Permissions policy violation: unload is not allowed in this document.
●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
●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

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.

○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
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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