Reactnative.dev Site Title
React Native · Learn once, write anywhere
Reactnative.dev Meta Description
A framework for building native apps using React
Reactnative.dev Test Results
Reactnative.dev Mobile Performance: 55/100
Quick overview:
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript. Potential savings of 445 KiB
Remove unused JavaScript to reduce bytes consumed by network activity. Learn more.
Serve images in next-gen formats. Potential savings of 223 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.
Remove unused CSS. Potential savings of 61 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.
Properly size images. Potential savings of 140 KiB
Serve images that are appropriately-sized to save cellular data and improve load time. Learn more.
Defer offscreen images. Potential savings of 65 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn more.
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Reduce the impact of third-party code
Third-party code blocked the main thread for 1,600 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.
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.
Serve static assets with an efficient cache policy
55 resources found
A long cache lifetime can speed up repeat visits to your page. Learn more.
Minimize main-thread work
5.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn more
Reduce JavaScript execution time
3.6 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
2 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.
Keep request counts low and transfer sizes small
77 requests • 6,873 KiB
To set budgets for the quantity and size of page resources, add a budget.json file. Learn more.
Avoid large layout shifts
3 elements found
These DOM elements contribute most to the CLS of the page.
User Timing marks and measures
4 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.
Avoid long main-thread tasks
9 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn more
Largest Contentful Paint element
1 element found
This is the largest contentful element painted within the viewport. Learn More
Reactnative.dev Mobile SEO: 100/100
Quick overview:
Reactnative.dev Mobile Best Practices: 86/100
Quick overview:
General
Missing source maps for large first-party JavaScript
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. 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
Trust and Safety
Does not use HTTPS
51 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 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.
Reactnative.dev Mobile Progressive Web App: 14/100
Quick overview:
Installable
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
51 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 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.
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.
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.
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
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.
Does not redirect HTTP traffic to HTTPS
If you've already set up HTTPS, make sure that you redirect all HTTP traffic to HTTPS in order to enable secure web features for all your users. Learn more.
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.
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 10.9 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.
Reactnative.dev 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.
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 more.
Similar sites
Similar tests
www.reactnative.com
www.reactnative.net
www.reactnative.org
www.reactnative.info
www.reactnative.biz
www.reactnative.us
www.reactnative.mobi
www.eactnative.dev
www.reactnative.dev
www.eeactnative.dev
www.reeactnative.dev
www.ereactnative.dev
www.deactnative.dev
www.rdeactnative.dev
www.dreactnative.dev
www.feactnative.dev
www.rfeactnative.dev
www.freactnative.dev
www.teactnative.dev
www.rteactnative.dev
www.treactnative.dev
www.ractnative.dev
www.rwactnative.dev
www.rewactnative.dev
www.rweactnative.dev
www.rsactnative.dev
www.resactnative.dev
www.rseactnative.dev
www.rdactnative.dev
www.redactnative.dev
www.rractnative.dev
www.reractnative.dev
www.rreactnative.dev
www.rectnative.dev
www.reqctnative.dev
www.reaqctnative.dev
www.reqactnative.dev
www.rewctnative.dev
www.reawctnative.dev
www.resctnative.dev
www.reasctnative.dev
www.rezctnative.dev
www.reazctnative.dev
www.rezactnative.dev
www.reatnative.dev
www.reaxtnative.dev
www.reacxtnative.dev
www.reaxctnative.dev
www.readtnative.dev
www.reacdtnative.dev
www.readctnative.dev
www.reaftnative.dev
www.reacftnative.dev
www.reafctnative.dev
www.reavtnative.dev
www.reacvtnative.dev
www.reavctnative.dev
www.reacnative.dev
www.reacrnative.dev
www.reactrnative.dev
www.reacrtnative.dev
www.reacfnative.dev
www.reactfnative.dev
www.reacgnative.dev
www.reactgnative.dev
www.reacgtnative.dev
www.reacynative.dev
www.reactynative.dev
www.reacytnative.dev
www.reactative.dev
www.reactbative.dev
www.reactnbative.dev
www.reactbnative.dev
www.reacthative.dev
www.reactnhative.dev
www.reacthnative.dev
www.reactjative.dev
www.reactnjative.dev
www.reactjnative.dev
www.reactmative.dev
www.reactnmative.dev
www.reactmnative.dev
www.reactntive.dev
www.reactnqtive.dev
www.reactnaqtive.dev
www.reactnqative.dev
www.reactnwtive.dev
www.reactnawtive.dev
www.reactnwative.dev
www.reactnstive.dev
www.reactnastive.dev
www.reactnsative.dev
www.reactnztive.dev
www.reactnaztive.dev
www.reactnzative.dev
www.reactnaive.dev
www.reactnarive.dev
www.reactnatrive.dev
www.reactnartive.dev
www.reactnafive.dev
www.reactnatfive.dev
www.reactnaftive.dev
www.reactnagive.dev
www.reactnatgive.dev
www.reactnagtive.dev
www.reactnayive.dev
www.reactnatyive.dev
www.reactnaytive.dev
www.reactnatve.dev
www.reactnatuve.dev
www.reactnatiuve.dev
www.reactnatuive.dev
www.reactnatjve.dev
www.reactnatijve.dev
www.reactnatjive.dev
www.reactnatkve.dev
www.reactnatikve.dev
www.reactnatkive.dev
www.reactnatove.dev
www.reactnatiove.dev
www.reactnatoive.dev
www.reactnatie.dev
www.reactnatice.dev
www.reactnativce.dev
www.reactnaticve.dev
www.reactnatife.dev
www.reactnativfe.dev
www.reactnatifve.dev
www.reactnatige.dev
www.reactnativge.dev
www.reactnatigve.dev
www.reactnatibe.dev
www.reactnativbe.dev
www.reactnatibve.dev
www.reactnativ.dev
www.reactnativw.dev
www.reactnativew.dev
www.reactnativwe.dev
www.reactnativs.dev
www.reactnatives.dev
www.reactnativse.dev
www.reactnativd.dev
www.reactnatived.dev
www.reactnativde.dev
www.reactnativr.dev
www.reactnativer.dev
www.reactnativre.dev
www.reactnative.net
www.reactnative.org
www.reactnative.info
www.reactnative.biz
www.reactnative.us
www.reactnative.mobi
www.eactnative.dev
www.reactnative.dev
www.eeactnative.dev
www.reeactnative.dev
www.ereactnative.dev
www.deactnative.dev
www.rdeactnative.dev
www.dreactnative.dev
www.feactnative.dev
www.rfeactnative.dev
www.freactnative.dev
www.teactnative.dev
www.rteactnative.dev
www.treactnative.dev
www.ractnative.dev
www.rwactnative.dev
www.rewactnative.dev
www.rweactnative.dev
www.rsactnative.dev
www.resactnative.dev
www.rseactnative.dev
www.rdactnative.dev
www.redactnative.dev
www.rractnative.dev
www.reractnative.dev
www.rreactnative.dev
www.rectnative.dev
www.reqctnative.dev
www.reaqctnative.dev
www.reqactnative.dev
www.rewctnative.dev
www.reawctnative.dev
www.resctnative.dev
www.reasctnative.dev
www.rezctnative.dev
www.reazctnative.dev
www.rezactnative.dev
www.reatnative.dev
www.reaxtnative.dev
www.reacxtnative.dev
www.reaxctnative.dev
www.readtnative.dev
www.reacdtnative.dev
www.readctnative.dev
www.reaftnative.dev
www.reacftnative.dev
www.reafctnative.dev
www.reavtnative.dev
www.reacvtnative.dev
www.reavctnative.dev
www.reacnative.dev
www.reacrnative.dev
www.reactrnative.dev
www.reacrtnative.dev
www.reacfnative.dev
www.reactfnative.dev
www.reacgnative.dev
www.reactgnative.dev
www.reacgtnative.dev
www.reacynative.dev
www.reactynative.dev
www.reacytnative.dev
www.reactative.dev
www.reactbative.dev
www.reactnbative.dev
www.reactbnative.dev
www.reacthative.dev
www.reactnhative.dev
www.reacthnative.dev
www.reactjative.dev
www.reactnjative.dev
www.reactjnative.dev
www.reactmative.dev
www.reactnmative.dev
www.reactmnative.dev
www.reactntive.dev
www.reactnqtive.dev
www.reactnaqtive.dev
www.reactnqative.dev
www.reactnwtive.dev
www.reactnawtive.dev
www.reactnwative.dev
www.reactnstive.dev
www.reactnastive.dev
www.reactnsative.dev
www.reactnztive.dev
www.reactnaztive.dev
www.reactnzative.dev
www.reactnaive.dev
www.reactnarive.dev
www.reactnatrive.dev
www.reactnartive.dev
www.reactnafive.dev
www.reactnatfive.dev
www.reactnaftive.dev
www.reactnagive.dev
www.reactnatgive.dev
www.reactnagtive.dev
www.reactnayive.dev
www.reactnatyive.dev
www.reactnaytive.dev
www.reactnatve.dev
www.reactnatuve.dev
www.reactnatiuve.dev
www.reactnatuive.dev
www.reactnatjve.dev
www.reactnatijve.dev
www.reactnatjive.dev
www.reactnatkve.dev
www.reactnatikve.dev
www.reactnatkive.dev
www.reactnatove.dev
www.reactnatiove.dev
www.reactnatoive.dev
www.reactnatie.dev
www.reactnatice.dev
www.reactnativce.dev
www.reactnaticve.dev
www.reactnatife.dev
www.reactnativfe.dev
www.reactnatifve.dev
www.reactnatige.dev
www.reactnativge.dev
www.reactnatigve.dev
www.reactnatibe.dev
www.reactnativbe.dev
www.reactnatibve.dev
www.reactnativ.dev
www.reactnativw.dev
www.reactnativew.dev
www.reactnativwe.dev
www.reactnativs.dev
www.reactnatives.dev
www.reactnativse.dev
www.reactnativd.dev
www.reactnatived.dev
www.reactnativde.dev
www.reactnativr.dev
www.reactnativer.dev
www.reactnativre.dev