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name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

77/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value12.3 s

3/100

10%

TBT (Total Blocking Time)

Value7,830 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1

2/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

nardiheat.com

97 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Nardiheat.com and no external sources were called. The less responsive or slowest element that took the longest time to load (97 ms) belongs to the original domain Nardiheat.com.

Content Size

915.0 kB

After Optimization

743.6 kB

In fact, the total size of Nardiheat.com main page is 915.0 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 661.4 kB which makes up the majority of the site volume.

HTML Optimization

-9%

Potential reduce by 9 B

Original 97 B
After minification 96 B
After compression 88 B

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. This web page is already compressed.

Image Optimization

-5%

Potential reduce by 32.5 kB

Original 661.4 kB
After minification 628.9 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. Nardi Heat images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 94.2 kB

Original 148.3 kB
After minification 123.9 kB
After compression 54.2 kB

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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 94.2 kB or 63% of the original size.

CSS Optimization

-43%

Potential reduce by 44.8 kB

Original 105.2 kB
After minification 94.2 kB
After compression 60.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nardiheat.com needs all CSS files to be minified and compressed as it can save up to 44.8 kB or 43% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

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.

High

[aria-*] attributes do not match their roles

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Language and Encoding

Language Detected

EN
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nardiheat.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nardiheat.com 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.

Social Sharing Optimization

nardiheat.com

Open Graph description is not detected on the main page of Nardi Heat. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: