victorina-vc.jp - Mobile Friendly Test

Victorina-vc.jp Test Results

Victorina-vc.jp Mobile Performance: 38/100

Quick overview:

Diagnostics

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

Reduce unused CSS

Est savings of 253 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.

Minify CSS

Est savings of 19 KiB

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Reduce unused JavaScript

Est savings of 536 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.

Reduce the impact of third-party code

Third-party code blocked the main thread for 360 ms

Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn how to minimize third-party impact.

Properly size images

Est savings of 2,824 KiB

Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images.

Reduce JavaScript execution time

1.9 s

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.

Serve images in next-gen formats

Est savings of 6,331 KiB

Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats.

Reduce initial server response time

Root document took 1,650 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Largest Contentful Paint image was lazily loaded

Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint. Learn more about optimal lazy loading.

Eliminate render-blocking resources

Est savings of 7,190 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn how to eliminate render-blocking resources.

Avoid large layout shifts

5 layout shifts found

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

Largest Contentful Paint element

28,140 ms

This is the largest contentful element painted within the viewport. Learn more about the Largest Contentful Paint element

Minimize main-thread work

4.2 s

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

Avoid multiple page redirects

Est savings of 1,260 ms

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

Ensure text remains visible during webfont load

Leverage the `font-display` CSS feature to ensure text is user-visible while webfonts are loading. Learn more about `font-display`.

Avoid enormous network payloads

Total size was 11,385 KiB

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

Efficiently encode images

Est savings of 1,007 KiB

Optimized images load faster and consume less cellular data. Learn how to efficiently encode images.

Enable text compression

Est savings of 36 KiB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes. Learn more about text compression.

Serve static assets with an efficient cache policy

153 resources found

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

Defer offscreen images

Est savings of 672 KiB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn how to defer offscreen images.

Image elements do not have explicit `width` and `height`

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

Avoid an excessive DOM size

1,772 elements

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn how to avoid an excessive DOM size.

Avoid serving legacy JavaScript to modern browsers

Est savings of 19 KiB

Polyfills and transforms enable legacy 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 legacy browsers. Learn why most sites can deploy ES6+ code without transpiling

Time to Interactive

28.8 s

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.

Forced reflow

Many APIs, typically reading layout geometry, force the rendering engine to pause script execution in order to calculate the style and layout. Learn more about forced reflow and its mitigations.

Layout shift culprits

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.

Legacy JavaScript

Est savings of 57 KiB

Font display

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.

LCP request discovery

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

Improve image delivery

Est savings of 7,367 KiB

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

Use efficient cache lifetimes

Est savings of 9,790 KiB

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

Document request latency

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

Render blocking requests

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.

Optimize DOM size

A large DOM can increase the duration of style calculations and layout reflows, impacting page responsiveness. A large DOM will also increase memory usage. Learn how to avoid an excessive DOM size.

Max Potential First Input Delay

200 ms

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.

Victorina-vc.jp Mobile SEO: 100/100

Quick overview:

Victorina-vc.jp Mobile Best Practices: 79/100

Quick overview:

Trust and Safety

Does not use HTTPS

2 insecure requests found

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

General

Browser errors were logged to the console

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

Victorina-vc.jp Mobile Accessibility: 88/100

Quick overview:

Best practices

These items highlight common accessibility best practices.

Touch targets do not have sufficient size or spacing.

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

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

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.

Contrast

These are opportunities to improve the legibility of your content.

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

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

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