Superstranka.cz Test Results

Superstranka.cz Mobile Performance: 26/100
Quick overview:
Time to Interactive
13.6 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.
Max Potential First Input Delay
340 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.
First Meaningful Paint
3.6 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Server Backend Latencies
130 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 Requests
Lists the network requests that were made during page load.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Diagnostics
Collection of useful page vitals.
Final Screenshot
The last screenshot captured of the pageload.

587163612516

Script Treemap Data
Used for treemap app
Network Round Trip Times
80 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.
Metrics
Collects all available metrics.

Superstranka.cz Mobile SEO: 85/100
Quick overview:
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
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 about the `alt` attribute.
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

Superstranka.cz Mobile Best Practices: 75/100
Quick overview:
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
Registers an `unload` listener
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Use `pagehide` or `visibilitychange` events instead. Learn more about unload event listeners
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more about this JavaScript library detection diagnostic audit.
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.
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
Superstranka.cz 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.
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
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.
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.
Superstranka.cz Mobile Accessibility: 82/100
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.
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.
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 about the `alt` attribute.
Buttons do not have an accessible name
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.
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.
Similar sites
Similar tests
www.superstranka.com
www.superstranka.net
www.superstranka.org
www.superstranka.info
www.superstranka.biz
www.superstranka.us
www.superstranka.mobi
www.uperstranka.cz
www.superstranka.cz
www.wuperstranka.cz
www.swuperstranka.cz
www.wsuperstranka.cz
www.euperstranka.cz
www.seuperstranka.cz
www.esuperstranka.cz
www.duperstranka.cz
www.sduperstranka.cz
www.dsuperstranka.cz
www.zuperstranka.cz
www.szuperstranka.cz
www.zsuperstranka.cz
www.xuperstranka.cz
www.sxuperstranka.cz
www.xsuperstranka.cz
www.auperstranka.cz
www.sauperstranka.cz
www.asuperstranka.cz
www.sperstranka.cz
www.syperstranka.cz
www.suyperstranka.cz
www.syuperstranka.cz
www.shperstranka.cz
www.suhperstranka.cz
www.shuperstranka.cz
www.sjperstranka.cz
www.sujperstranka.cz
www.sjuperstranka.cz
www.siperstranka.cz
www.suiperstranka.cz
www.siuperstranka.cz
www.suerstranka.cz
www.suoerstranka.cz
www.supoerstranka.cz
www.suoperstranka.cz
www.sulerstranka.cz
www.suplerstranka.cz
www.sulperstranka.cz
www.suprstranka.cz
www.supwrstranka.cz
www.supewrstranka.cz
www.supwerstranka.cz
www.supsrstranka.cz
www.supesrstranka.cz
www.supserstranka.cz
www.supdrstranka.cz
www.supedrstranka.cz
www.supderstranka.cz
www.suprrstranka.cz
www.superrstranka.cz
www.suprerstranka.cz
www.supestranka.cz
www.supeestranka.cz
www.superestranka.cz
www.supeerstranka.cz
www.supedstranka.cz
www.superdstranka.cz
www.supefstranka.cz
www.superfstranka.cz
www.supefrstranka.cz
www.supetstranka.cz
www.supertstranka.cz
www.supetrstranka.cz
www.supertranka.cz
www.superwtranka.cz
www.superswtranka.cz
www.superwstranka.cz
www.superetranka.cz
www.supersetranka.cz
www.superdtranka.cz
www.supersdtranka.cz
www.superztranka.cz
www.supersztranka.cz
www.superzstranka.cz
www.superxtranka.cz
www.supersxtranka.cz
www.superxstranka.cz
www.superatranka.cz
www.supersatranka.cz
www.superastranka.cz
www.supersranka.cz
www.supersrranka.cz
www.superstrranka.cz
www.supersrtranka.cz
www.supersfranka.cz
www.superstfranka.cz
www.supersftranka.cz
www.supersgranka.cz
www.superstgranka.cz
www.supersgtranka.cz
www.supersyranka.cz
www.superstyranka.cz
www.supersytranka.cz
www.superstanka.cz
www.supersteanka.cz
www.superstreanka.cz
www.supersteranka.cz
www.superstdanka.cz
www.superstrdanka.cz
www.superstdranka.cz
www.superstfanka.cz
www.superstrfanka.cz
www.supersttanka.cz
www.superstrtanka.cz
www.supersttranka.cz
www.superstrnka.cz
www.superstrqnka.cz
www.superstraqnka.cz
www.superstrqanka.cz
www.superstrwnka.cz
www.superstrawnka.cz
www.superstrwanka.cz
www.superstrsnka.cz
www.superstrasnka.cz
www.superstrsanka.cz
www.superstrznka.cz
www.superstraznka.cz
www.superstrzanka.cz
www.superstraka.cz
www.superstrabka.cz
www.superstranbka.cz
www.superstrabnka.cz
www.superstrahka.cz
www.superstranhka.cz
www.superstrahnka.cz
www.superstrajka.cz
www.superstranjka.cz
www.superstrajnka.cz
www.superstramka.cz
www.superstranmka.cz
www.superstramnka.cz
www.superstrana.cz
www.superstranja.cz
www.superstrankja.cz
www.superstrania.cz
www.superstrankia.cz
www.superstranika.cz
www.superstranma.cz
www.superstrankma.cz
www.superstranla.cz
www.superstrankla.cz
www.superstranlka.cz
www.superstranoa.cz
www.superstrankoa.cz
www.superstranoka.cz
www.superstrank.cz
www.superstrankq.cz
www.superstrankaq.cz
www.superstrankqa.cz
www.superstrankw.cz
www.superstrankaw.cz
www.superstrankwa.cz
www.superstranks.cz
www.superstrankas.cz
www.superstranksa.cz
www.superstrankz.cz
www.superstrankaz.cz
www.superstrankza.cz
Last Tested: