swccd.edu - Southwestern College : Chula Vista, California

Swccd.edu Site Title

Southwestern College : Chula Vista, California

Swccd.edu Test Results

Swccd.edu Mobile Performance: 25/100

Quick overview:

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 1,006 KiB

Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more.

Enable text compression. Potential savings of 288 KiB

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

Remove unused JavaScript. Potential savings of 544 KiB

Remove unused JavaScript to reduce bytes consumed by network activity. Learn more.

Defer offscreen images. Potential savings of 550 KiB

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

Eliminate render-blocking resources. Potential savings of 1,540 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.

Properly size images. Potential savings of 240 KiB

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

Efficiently encode images. Potential savings of 104 KiB

Optimized images load faster and consume less cellular data. Learn more.

Remove unused CSS. Potential savings of 55 KiB

Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity. Learn more.

Reduce initial server response time. Root document took 610 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.

Avoid `document.write()`

For users on slow connections, external scripts dynamically injected via `document.write()` can delay page load by tens of seconds. Learn more.

Reduce the impact of third-party code

Third-party code blocked the main thread for 1,300 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 more.

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.

Serve static assets with an efficient cache policy

42 resources found

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

Does not use passive listeners to improve scrolling performance

Consider marking your touch and wheel event listeners as `passive` to improve your page's scroll performance. Learn more.

Minimize main-thread work

6.3 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

1,793 elements

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

Avoid enormous network payloads

Total size was 4,006 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn more.

Reduce JavaScript execution time

2.8 s

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

Avoid chaining critical requests

18 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.

Largest Contentful Paint element

1 element found

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

Keep request counts low and transfer sizes small

88 requests • 4,006 KiB

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

Avoid long main-thread tasks

18 long tasks found

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

User Timing marks and measures

2 user timings

Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences. Learn more.

Swccd.edu Mobile SEO: 73/100

Quick overview:

Content Best Practices

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

Links do not have descriptive text

1 link found

Descriptive link text helps search engines understand your content. Learn more.

Document does not have a meta description

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

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

Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements. Learn more.

Swccd.edu Mobile Best Practices: 62/100

Quick overview:

Trust and Safety

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.

Includes front-end JavaScript libraries with known security vulnerabilities

4 vulnerabilities detected

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

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.

User Experience

Serves images with low resolution

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn more.

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

Swccd.edu Mobile Progressive Web App: 21/100

Quick overview:

PWA Optimized

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.

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 provide a valid `apple-touch-icon`

For ideal appearance on iOS when users add a progressive web app to the home screen, define an `apple-touch-icon`. It must point to a non-transparent 192px (or 180px) square PNG. Learn More.

Installable

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.

Does not use HTTPS

1 insecure request found

Fast and reliable

`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.

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.

Page load is not fast enough on mobile networks

Interactive at 14.4 s

A fast page load over a cellular network ensures a good mobile user experience. Learn more. Your page loads too slowly and is not interactive within 10 seconds. Look at the opportunities and diagnostics in the "Performance" section to learn how to improve.

Swccd.edu Mobile Accessibility: 97/100

Quick overview:

Navigation

These are opportunities to improve keyboard navigation in your application.

Heading elements are not in a sequentially-descending order

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more.

Some elements have a `[tabindex]` value greater than 0

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more.

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