Lighthouse Desktop

· 0 checks — Desktop 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.

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:0.383907] map[node:map[boundingRect:map[bottom:6177 height:6035 left:0 right:1350 top:142 width:1350] lhId:page-4-DIV nodeLabel:Engineering the Future of Clean Energy Toshiba is advancing decarbonization wit… path:1,HTML,1,BODY,3,DIV,1,DIV selector:body.home > div#page > div#content snippet:<div id="content" class="site-content"> type:node] score:0.383352 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:38 height:13 left:258 right:360 top:25 width:102] lhId:page-11-IMG nodeLabel:Toshiba America, Inc., site identifier: United States path:1,HTML,1,BODY,3,DIV,0,HEADER,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,IMG selector:div.elementor-element > div.elementor-element > div.elementor-widget-container > img#MjY2OjI0Mg==-1 snippet:<img width="102" height="13" alt="Toshiba America, Inc., site identifier: United States" nitro-lazy-src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…" class="attachment-full size-full wp-image-6597 lazyloaded" decoding="async" nitro-lazy-empty="" id="MjY2OjI0Mg==-1" data-nitro-empty-id="MjY2OjI0Mg==-1" src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:363 height:156 left:258 right:1330 top:207 width:1072] lhId:page-3-DIV nodeLabel:Engineering the Future of Clean Energy path:1,HTML,1,BODY,3,DIV,1,DIV,0,DIV,0,DIV,0,MAIN,0,ARTICLE,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV selector:div.elementor-repeater-item-5305645 > div.swiper-slide-inner > div.swiper-slide-contents > div.elementor-slide-heading snippet:<div class="elementor-slide-heading"> type:node] score:0.000548 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:64 height:64 left:48 right:209 top:0 width:161] lhId:page-10-IMG nodeLabel:Toshiba path:1,HTML,1,BODY,3,DIV,0,HEADER,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.elementor-element > div.elementor-widget-container > a.lazyloaded > img#MjYxOjE4OA==-1 snippet:<img width="161" height="64" alt="Toshiba" nitro-lazy-src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…" class="attachment-full size-full wp-image-6590 lazyloaded" decoding="async" nitro-lazy-empty="" id="MjYxOjE4OA==-1" data-nitro-empty-id="MjYxOjE4OA==-1" src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:584 height:13 left:16 right:52 top:571 width:36] lhId:page-1-I nodeLabel:div.elementor-swiper > div.elementor-slides-wrapper > div.elementor-swiper-button > i.eicon-chevron-left path:1,HTML,1,BODY,3,DIV,1,DIV,0,DIV,0,DIV,0,MAIN,0,ARTICLE,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,I selector:div.elementor-swiper > div.elementor-slides-wrapper > div.elementor-swiper-button > i.eicon-chevron-left snippet:<i aria-hidden="true" class="eicon-chevron-left"> type:node] score:7e-06 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:64 height:64 left:48 right:209 top:0 width:161] lhId:page-10-IMG nodeLabel:Toshiba path:1,HTML,1,BODY,3,DIV,0,HEADER,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.elementor-element > div.elementor-widget-container > a.lazyloaded > img#MjYxOjE4OA==-1 snippet:<img width="161" height="64" alt="Toshiba" nitro-lazy-src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…" class="attachment-full size-full wp-image-6590 lazyloaded" decoding="async" nitro-lazy-empty="" id="MjYxOjE4OA==-1" data-nitro-empty-id="MjYxOjE4OA==-1" src="/tai/nitropack_static/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES/assets/images/optim…"> type:node]]] type:subitems]]]

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-DIV

nodeLabel: Toshiba clean energy and decarbonization technologies, featuring systems for hy…

path: 1,HTML,1,BODY,3,DIV,1,DIV,0,DIV,0,DIV,0,MAIN,0,ARTICLE,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV

selector: div.elementor-slides-wrapper > div.swiper-wrapper > div.elementor-repeater-item-5305645 > div.swiper-slide-bg

snippet: <div role="img" aria-label="Toshiba clean energy and decarbonization technologies, featuring systems f…" class="swiper-slide-bg lazyloaded">

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

value: No additional origins are good candidates for preconnecting

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
nitroscripts.com/BGBRhCFuVoYcNaChrcCBWDyBSSQswhES	600.0 s	959 B

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

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: 0.0 ms 11.5 KiB

URL	Transfer Size	Est Savings
:root{--ast-post-nav-space:0;--ast-container-default-xlg-padding:2.5em;--ast-container-default-lg-p…	12.7 KiB	11.5 KiB

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

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: 530 ms

URL	Time Spent
toshiba.com/	530 ms
toshiba.com/tai/	0.0 ms

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
Engineering the Future of Clean Energy Toshiba is advancing decarbonization wit… `body.home > div#page > div#content`	0.383
Engineering the Future of Clean Energy `div.elementor-repeater-item-5305645 > div.swiper-slide-inner > div.swiper-slide-contents > div.elementor-slide-heading`	0.001
div.elementor-swiper > div.elementor-slides-wrapper > div.elementor-swiper-button > i.eicon-chevron-left `div.elementor-swiper > div.elementor-slides-wrapper > div.elementor-swiper-button > i.eicon-chevron-left`	0.000

●Time to Interactive 2.1 s

●Optimize DOM size

●Font display

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Max Potential First Input Delay 30 ms

●Minify CSS

●Minify JavaScript

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 1,930 KiB

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.4 s

●Avoid non-composited animations 2 animated elements found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 110 ms

●Server Backend Latencies 40 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 280 ms

○INP breakdown

○User Timing marks and measures

○Avoid long main-thread tasks

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.

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
TOSHIBA/NSTA EXPLORAVISION `div.pp-info-box-content > div.pp-info-box-title-wrap > div.pp-info-box-title-container > h2.pp-info-box-title`
We’re Celebrating The 33rd Anniversary Of ExploraVision—The World’s Largest K-1… `div.pp-info-box > div.pp-info-box-content > div.pp-info-box-description > p`
ExploraVision `div.pp-info-box-description > p > span > a`
STEM Competition. `div.pp-info-box-description > p > span > a`
Get Inspired `div.pp-info-box-content > div.pp-info-box-footer > a.pp-info-box-button > span.pp-button-text`

These are opportunities to improve the legibility of your content.

Names and labels

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.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a `div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a`
div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a `div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a`
div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a `div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a`
div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a `div.elementor-widget-container > ul.elementor-icon-list-items > li.elementor-icon-list-item > a`

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.

○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

●Image elements have `[alt]` attributes

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

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

●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

●`<html>` element has a `[lang]` attribute

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

●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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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

○Buttons have an accessible name

○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

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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.

○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.

100

Best Practices

●Uses HTTPS

●Avoids deprecated APIs

●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 browser errors logged to the console

●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

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.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
/tic/product-category/power-electronics/uninterruptible-p...	Learn More
toshiba.semicon-storage.com/us/semiconductor/product/power-semiconductors.html	Learn More
toshiba.com/tai/about-us/	Learn More
www.toshiba.com/taes	Learn More
www.toshiba.com/tic	Learn More
www.toshiba.com/taec	Learn More
/press-releases/press-releases/press-release-details/2026...	Read More
/press-releases/press-releases/press-release-details/2026...	Read More
/press-releases/press-releases/press-release-details/2026...	Read More
/press-releases/press-releases/press-release-details/2026...	Read More
/press-releases/press-releases/press-release-details/2026...	Read More
/press-releases/press-releases/press-release-details/2026...	Read More
www.toshiba.com/taf/	Learn More

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 are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`