jps.jp - An Error Occurred Setting Your User Cookie

Jps.jp Site Title

An Error Occurred Setting Your User Cookie

Jps.jp Test Results

Jps.jp Mobile Performance: 28/100

Quick overview:

Opportunities

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

Avoid multiple page redirects. Potential savings of 1,110 ms

Redirects introduce additional delays before the page can be loaded. Learn more.

Eliminate render-blocking resources. Potential savings of 440 ms

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

Reduce initial server response time. Root document took 620 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more.

Diagnostics

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

Minimize main-thread work

3.8 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn more

Avoid an excessive DOM size

1,316 elements

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn more.

Reduce JavaScript execution time

2.2 s

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn more.

Largest Contentful Paint element

1 element found

This is the largest contentful element painted within the viewport. Learn More

Avoid long main-thread tasks

14 long tasks found

Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn more

Avoid chaining critical requests

3 chains found

The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Learn more.

Avoid large layout shifts

4 elements found

These DOM elements contribute most to the CLS of the page.

Keep request counts low and transfer sizes small

19 requests • 842 KiB

To set budgets for the quantity and size of page resources, add a budget.json file. Learn more.

Jps.jp Mobile SEO: 77/100

Quick overview:

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Document does not have a meta description

Meta descriptions may be included in search results to concisely summarize page content. Learn more.

Image elements do not have `[alt]` attributes

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more.

Crawling and Indexing

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

Links are not crawlable

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn More

Jps.jp Mobile Best Practices: 54/100

Quick overview:

General

Uses deprecated APIs

2 warnings found

Deprecated APIs will eventually be removed from the browser. Learn more.

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

Uses Application Cache

Found "/action/showCacheManifest"

Application Cache is deprecated. Learn more.

Trust and Safety

Does not use HTTPS

1 insecure request 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 servedover 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.

Includes front-end JavaScript libraries with known security vulnerabilities

8 vulnerabilities detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers. Learn more.

Links to cross-origin destinations are unsafe

Add `rel="noopener"` or `rel="noreferrer"` to any external links to improve performance and prevent security vulnerabilities. Learn more.

Jps.jp Mobile Progressive Web App: 50/100

Quick overview:

Fast and reliable

Current page does not respond with a 200 when offline

If you're building a Progressive Web App, consider using a service worker so that your app can work offline. Learn more.

`start_url` does not respond with a 200 when offline

A service worker enables your web app to be reliable in unpredictable network conditions. Learn more. No usable web app manifest found on page.

PWA Optimized

Is not configured for a custom splash screen

A themed splash screen ensures a high-quality experience when users launch your app from their homescreens. Learn more. Failures: No manifest was fetched.

Manifest doesn't have a maskable icon

A maskable icon ensures that the image fills the entire shape without being letterboxed when installing the app on a device. Learn more. No manifest was fetched

Does not set a theme color for the address bar.

The browser address bar can be themed to match your site. Learn more. Failures: No manifest was fetched, No `<meta name="theme-color">` tag found.

Installable

Does not use HTTPS

1 insecure request found

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

The service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. Learn more.

Web app manifest does not meet the installability requirements

Browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement. Learn more. Failures: No manifest was fetched.

Jps.jp Mobile Accessibility: 0/100

Quick overview:

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

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more.

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.

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.

Contrast

These are opportunities to improve the legibility of your content.

Background and foreground colors have a sufficient contrast ratio

Low-contrast text is difficult or impossible for many users to read. Learn more.

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