Ibus.com.tw ibus | 台灣愛巴士 - Real Service, ibus

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Ibus.com.tw Mobile Performance

ibus.com.tw Mobile Performance

21/100

These metrics represent real-world Chrome users experience viewing ibus.com.tw 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

First Contentful Paint

First Input Delay

Largest Contentful Paint

Metrics

Largest Contentful Paint0/100 14.3 s

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Speed Index1/100 15.5 s

Speed Index shows how quickly the contents of a page are visibly populated. Learn more.

Time to Interactive19/100 11.5 s

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

First Contentful Paint29/100 5.0 s

First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Total Blocking Time35/100 750 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.

Cumulative Layout Shift94/100 0.08

Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.

Should Fix (17)

Opportunities

These suggestions can help your page load faster. They don't directly affect the Performance score.

Eliminate render-blocking resources

Potential savings of 3,950 ms

3,950 ms

Serve images in next-gen formats

Potential savings of 460 KiB

2,550 ms

Reduce initial server response time

Root document took 1,230 ms

1,134 ms

Remove unused CSS

Potential savings of 66 KiB

750 ms

Preload key requests

Potential savings of 690 ms

690 ms

Defer offscreen images

Potential savings of 18 KiB

150 ms

Minify JavaScript

Potential savings of 17 KiB

150 ms

Remove unused JavaScript

Potential savings of 62 KiB

150 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

Serve static assets with an efficient cache policy

62 resources found

Minimize main-thread work

7.5 s

Reduce JavaScript execution time

2.9 s

Keep request counts low and transfer sizes small

79 requests • 1,139 KiB

Avoid large layout shifts

5 elements found

Avoid chaining critical requests

47 chains found

Largest Contentful Paint element

1 element found

Avoid long main-thread tasks

11 long tasks found

Passed Audits (15)

Minify CSS

Potential savings of 11 KiB

Minimize third-party usage

Third-party code blocked the main thread for 80 ms

Avoids large JavaScript libraries with smaller alternatives

0 large libraries found

Use video formats for animated content

Preconnect to required origins

Properly size images

Avoids an excessive DOM size

599 elements

Avoids `document.write()`

Avoids enormous network payloads

Total size was 1,139 KiB

Efficiently encode images

Avoid multiple page redirects

Potential savings of 630 ms

Remove duplicate modules in JavaScript bundles

Uses passive listeners to improve scrolling performance

Enable text compression

Avoid serving legacy JavaScript to modern browsers

Potential savings of 6 KiB

Ibus.com.tw Mobile SEO

ibus.com.tw Mobile SEO

89/100

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 (2)

Crawling and Indexing

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

Links are not crawlable

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

57% appropriately sized tap targets

Passed Audits (12)

robots.txt is valid

Document uses legible font sizes

100% legible text

Page isn’t blocked from indexing

Image elements have `[alt]` attributes

Links have descriptive text

Document has a valid `rel=canonical`

Document has a meta description

Document has a valid `hreflang`

Document avoids plugins

Has a `<meta name="viewport">` tag with `width` or `initial-scale`

Document has a `<title>` element

Page has successful HTTP status code

Ibus.com.tw Mobile Best Practices

ibus.com.tw Mobile Best Practices

71/100

These checks highlight opportunities to improve the overall code health of ibus.com.tw 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 (4)

Trust and Safety

Links to cross-origin destinations are unsafe

Does not use HTTPS

67 insecure requests found

Includes front-end JavaScript libraries with known security vulnerabilities

4 vulnerabilities detected

General

Browser errors were logged to the console

Passed Audits (12)

Properly defines charset

Avoids requesting the notification permission on page load

Avoids deprecated APIs

Page has the HTML doctype

Page has valid source maps

Avoids Application Cache

Serves images with appropriate resolution

Detected JavaScript libraries

Displays images with correct aspect ratio

Allows users to paste into password fields

Avoids `unload` event listeners

Avoids requesting the geolocation permission on page load

Ibus.com.tw Mobile Progressive Web App

ibus.com.tw Mobile Progressive Web App

18/100

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 (10)

PWA Optimized

Does not set a theme color for the address bar.

Does not redirect HTTP traffic to HTTPS

Is not configured for a custom splash screen

Manifest doesn't have a maskable icon

Fast and reliable

`start_url` does not respond with a 200 when offline

Current page does not respond with a 200 when offline

Page load is not fast enough on mobile networks

Interactive at 11.5 s

Installable

Does not register a service worker that controls page and `start_url`

Does not use HTTPS

67 insecure requests found

Web app manifest does not meet the installability requirements

Passed Audits (4)

Provides a valid `apple-touch-icon`

Contains some content when JavaScript is not available

Content is sized correctly for the viewport

Has a `<meta name="viewport">` tag with `width` or `initial-scale`

Ibus.com.tw Mobile Accessibility

ibus.com.tw Mobile Accessibility

92/100

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 (3)

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.

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Heading elements are not in a sequentially-descending order

Contrast

These are opportunities to improve the legibility of your content.

Background and foreground colors do not have a sufficient contrast ratio.

Passed Audits (15)

`[id]` attributes on active, focusable elements are unique

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

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

`[role]` values are valid

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

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

Image elements have `[alt]` attributes

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

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

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

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

Document has a `<title>` element

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

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

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

Ibus.com.tw Mobile Usability

Mobile Usability

98/100

These checks validate how easily a visitor can use ibus.com.tw 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 (5)

Avoid app install interstitials that hide content

Avoid plugins

Configure the viewport

Size content to viewport

Use legible font sizes

Ibus.com.tw Mobile PageSpeed

Mobile Speed

58/100

These checks analyze the performance of ibus.com.tw 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)

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Prioritize visible content

Optimize images

Enable compression

Minify JavaScript

Minify CSS

Minify HTML

Passed Audits (2)

Avoid landing page redirects

Reduce server response time

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