React.dev Test Results
React.dev Mobile Performance: 89/100
Quick overview:
Max Potential First Input Delay
220 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.
Time to Interactive
4.6 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.
Diagnostics
Collection of useful page vitals.
Server Backend Latencies
0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance. Learn more about server response time.
Network Round Trip Times
0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. Learn more about the Round Trip Time.
Script Treemap Data
Used for treemap app
Tasks
Lists the toplevel main thread tasks that executed during page load.
Network Requests
Lists the network requests that were made during page load.
Metrics
Collects all available metrics.
Final Screenshot
The last screenshot captured of the pageload.
276755479338
React.dev Mobile SEO: 92/100
Quick overview:
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 how to make links 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 how to make pages mobile-friendly.
Tap targets are not sized appropriately
91% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements. Learn more about tap targets.
React.dev Mobile Best Practices: 92/100
Quick overview:
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 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.
Ensure CSP is effective against XSS attacks
A strong Content Security Policy (CSP) significantly reduces the risk of cross-site scripting (XSS) attacks. Learn how to use a CSP to prevent XSS
General
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more about this JavaScript library detection diagnostic audit.
React.dev Mobile PWA: 33/100
Quick overview:
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 about splash screens. Failures: 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 about theming the address bar. Failures: No manifest was fetched,
No `<meta name="theme-color">` tag 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 about Service Workers.
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 about maskable manifest icons. No manifest was fetched
Installable
Web app manifest or service worker do not meet the installability requirements
1 reason
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. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement. Learn more about manifest installability requirements.
React.dev Mobile Accessibility: 96/100
Quick overview:
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.
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 about heading order.
Similar sites
Similar tests
www.react.com
www.react.net
www.react.org
www.react.info
www.react.biz
www.react.us
www.react.mobi
www.eact.dev
www.react.dev
www.eeact.dev
www.reeact.dev
www.ereact.dev
www.deact.dev
www.rdeact.dev
www.dreact.dev
www.feact.dev
www.rfeact.dev
www.freact.dev
www.teact.dev
www.rteact.dev
www.treact.dev
www.ract.dev
www.rwact.dev
www.rewact.dev
www.rweact.dev
www.rsact.dev
www.resact.dev
www.rseact.dev
www.rdact.dev
www.redact.dev
www.rract.dev
www.reract.dev
www.rreact.dev
www.rect.dev
www.reqct.dev
www.reaqct.dev
www.reqact.dev
www.rewct.dev
www.reawct.dev
www.resct.dev
www.reasct.dev
www.rezct.dev
www.reazct.dev
www.rezact.dev
www.reat.dev
www.reaxt.dev
www.reacxt.dev
www.reaxct.dev
www.readt.dev
www.reacdt.dev
www.readct.dev
www.reaft.dev
www.reacft.dev
www.reafct.dev
www.reavt.dev
www.reacvt.dev
www.reavct.dev
www.reac.dev
www.reacr.dev
www.reactr.dev
www.reacrt.dev
www.reacf.dev
www.reactf.dev
www.reacg.dev
www.reactg.dev
www.reacgt.dev
www.reacy.dev
www.reacty.dev
www.reacyt.dev
www.react.net
www.react.org
www.react.info
www.react.biz
www.react.us
www.react.mobi
www.eact.dev
www.react.dev
www.eeact.dev
www.reeact.dev
www.ereact.dev
www.deact.dev
www.rdeact.dev
www.dreact.dev
www.feact.dev
www.rfeact.dev
www.freact.dev
www.teact.dev
www.rteact.dev
www.treact.dev
www.ract.dev
www.rwact.dev
www.rewact.dev
www.rweact.dev
www.rsact.dev
www.resact.dev
www.rseact.dev
www.rdact.dev
www.redact.dev
www.rract.dev
www.reract.dev
www.rreact.dev
www.rect.dev
www.reqct.dev
www.reaqct.dev
www.reqact.dev
www.rewct.dev
www.reawct.dev
www.resct.dev
www.reasct.dev
www.rezct.dev
www.reazct.dev
www.rezact.dev
www.reat.dev
www.reaxt.dev
www.reacxt.dev
www.reaxct.dev
www.readt.dev
www.reacdt.dev
www.readct.dev
www.reaft.dev
www.reacft.dev
www.reafct.dev
www.reavt.dev
www.reacvt.dev
www.reavct.dev
www.reac.dev
www.reacr.dev
www.reactr.dev
www.reacrt.dev
www.reacf.dev
www.reactf.dev
www.reacg.dev
www.reactg.dev
www.reacgt.dev
www.reacy.dev
www.reacty.dev
www.reacyt.dev