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navitime.co.jp Mobile Performance
24/100
These metrics represent real-world Chrome users experience viewing navitime.co.jp on mobile devices. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
Cumulative Layout Shift
Largest Contentful Paint
First Input Delay
First Contentful Paint
Metrics
Time to Interactive2/100 21.2 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time8/100 1,370 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Speed Index8/100 10.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint21/100 5.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint74/100 3.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift88/100 0.107
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (23)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 1,237 KiB
5,850 ms
Efficiently encode images
Potential savings of 1,009 KiB
3,900 ms
Defer offscreen images
Potential savings of 789 KiB
3,000 ms
Remove unused JavaScript
Potential savings of 343 KiB
2,250 ms
Properly size images
Potential savings of 62 KiB
1,530 ms
Avoid multiple page redirects
Potential savings of 1,260 ms
1,260 ms
Eliminate render-blocking resources
Potential savings of 1,180 ms
1,184 ms
Enable text compression
Potential savings of 132 KiB
600 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Ensure text remains visible during webfont load
Avoid `document.write()`
Reduce the impact of third-party code
Third-party code blocked the main thread for 1,320 ms
Does not use passive listeners to improve scrolling performance
Serve static assets with an efficient cache policy
79 resources found
Minimize main-thread work
9.7 s
Reduce JavaScript execution time
5.5 s
Avoid enormous network payloads
Total size was 3,142 KiB
Avoid an excessive DOM size
904 elements
Avoid long main-thread tasks
20 long tasks found
Largest Contentful Paint element
1 element found
Avoid chaining critical requests
15 chains found
Avoid large layout shifts
5 elements found
User Timing marks and measures
8 user timings
Keep request counts low and transfer sizes small
170 requests • 3,142 KiB
Passed Audits (7)
Initial server response time was short
Root document took 190 ms
Preload key requests
Preconnect to required origins
Remove unused CSS
Minify JavaScript
Use video formats for animated content
Minify CSS
navitime.co.jp Mobile SEO
85/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (3)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Tap targets are not sized appropriately
96% appropriately sized tap targets
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (11)
Links have descriptive text
Document has a meta description
Document uses legible font sizes
96.33% legible text
Page has successful HTTP status code
Document has a valid `hreflang`
Document has a `<title>` element
robots.txt is valid
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Page isn’t blocked from indexing
Document has a valid `rel=canonical`
Document avoids plugins
navitime.co.jp Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of navitime.co.jp mobile page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (3)
Trust and Safety
Does not use HTTPS
2 insecure requests found
Includes front-end JavaScript libraries with known security vulnerabilities
5 vulnerabilities detected
Links to cross-origin destinations are unsafe
Passed Audits (11)
Avoids requesting the notification permission on page load
Avoids deprecated APIs
Detected JavaScript libraries
Displays images with correct aspect ratio
Avoids requesting the geolocation permission on page load
Avoids Application Cache
Allows users to paste into password fields
Properly defines charset
Page has the HTML doctype
Serves images with appropriate resolution
No browser errors logged to the console
navitime.co.jp Mobile Progressive Web App
25/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (9)
Fast and reliable
Page load is not fast enough on mobile networks
Interactive at 21.2 s
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
2 insecure requests found
Does not register a service worker that controls page and `start_url`
PWA Optimized
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Passed Audits (5)
Redirects HTTP traffic to HTTPS
Content is sized correctly for the viewport
Contains some content when JavaScript is not available
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
navitime.co.jp Mobile Accessibility
78/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (6)
Tables and lists
These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
`<dl>`'s do not contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are not wrapped in `<dl>` elements
Names and labels
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.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (19)
`<html>` element has a `[lang]` attribute
The page contains a heading, skip link, or landmark region
`[aria-*]` attributes are valid and not misspelled
`[aria-hidden="true"]` is not present on the document `<body>`
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Heading elements appear in a sequentially-descending order
`[id]` attributes on active, focusable elements are unique
`[role]`s have all required `[aria-*]` attributes
`<frame>` or `<iframe>` elements have a title
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`<html>` element has a valid value for its `[lang]` attribute
`[aria-*]` attributes have valid values
Document has a `<title>` element
`[aria-*]` attributes match their roles
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[role]` values are valid
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
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
Mobile Usability
99/100
These checks validate how easily a visitor can use navitime.co.jp on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Should Fix (1)
Size tap targets appropriately
Passed Audits (4)
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes
Mobile Speed
20/100
These checks analyze the performance of navitime.co.jp on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (8)
Optimize images
Avoid landing page redirects
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Enable compression
Minify JavaScript
Minify HTML
Minify CSS
Passed Audits (2)
Reduce server response time
Prioritize visible content
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