688 ms in total
24 ms
498 ms
166 ms
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Visit serko.travelWe analyzed Serko.travel page load time and found that the first response time was 24 ms and then it took 664 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
serko.travel performance score
name
value
score
weighting
Value4.6 s
13/100
10%
Value5.2 s
23/100
25%
Value14.9 s
1/100
10%
Value15,950 ms
0/100
30%
Value0
100/100
15%
Value25.2 s
0/100
10%
24 ms
303 ms
62 ms
24 ms
24 ms
Our browser made a total of 12 requests to load all elements on the main page. We found that 33% of them (4 requests) were addressed to the original Serko.travel, 42% (5 requests) were made to Fonts.gstatic.com and 17% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (303 ms) belongs to the original domain Serko.travel.
Page size can be reduced by 59.5 kB (46%)
129.5 kB
69.9 kB
In fact, the total size of Serko.travel main page is 129.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. HTML takes 70.3 kB which makes up the majority of the site volume.
Potential reduce by 50.0 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 50.0 kB or 71% of the original size.
Potential reduce by 9.5 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Serko needs image optimization as it can save up to 9.5 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 50 B
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.
We found no issues to fix!
5
5
The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Serko. According to our analytics all requests are already optimized.
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serko.travel accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[aria-*] attributes do not have valid values
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
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.
Impact
Issue
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
serko.travel best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
serko.travel SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Serko.travel can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Serko.travel main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
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serko.travel
Open Graph data is detected on the main page of Serko. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: