Tools & Wizards About Us
zambutomirrors.com screenshot

Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

zambutomirrors.com

Zambuto Optical Company - Newtonian Telescope Mirrors

Page Load Speed

1.1 sec in total

First Response

135 ms

Resources Loaded

757 ms

Page Rendered

167 ms

zambutomirrors.com screenshot

About Website

Visit zambutomirrors.com now to see the best up-to-date Zambuto Mirrors content and also check out these interesting facts you probably never knew about zambutomirrors.com

Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7" through 24" diameter.

Visit zambutomirrors.com

Key Findings

We analyzed Zambutomirrors.com page load time and found that the first response time was 135 ms and then it took 924 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

zambutomirrors.com performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.4 s

98/100

10%

Network Requests Diagram

zambutomirrors.com

135 ms

zambutomirrors.com

259 ms

ga.js

22 ms

positioningtempl.jpeg

357 ms

positioningtempl1.jpeg

182 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 70% of them (7 requests) were addressed to the original Zambutomirrors.com, 30% (3 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (357 ms) belongs to the original domain Zambutomirrors.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 34.3 kB (7%)

Content Size

490.9 kB

After Optimization

456.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zambutomirrors.com main page is 490.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 468.4 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 3.3 kB

  • Original 5.4 kB
  • After minification 5.3 kB
  • After compression 2.1 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 3.3 kB or 61% of the original size.

Image Optimization

-7%

Potential reduce by 31.0 kB

  • Original 468.4 kB
  • After minification 437.4 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. Zambuto Mirrors images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zambuto Mirrors. According to our analytics all requests are already optimized.

Network Requests Diagram

zambutomirrors.com

zambutomirrors.com

135 ms

zambutomirrors.com

zambutomirrors.com

259 ms

ga.js

ga.js

22 ms

positioningtempl.jpeg

positioningtempl.jpeg

357 ms

positioningtempl1.jpeg

positioningtempl1.jpeg

182 ms

positioningtempl2.jpeg

positioningtempl2.jpeg

185 ms

positioningtempl3.jpeg

positioningtempl3.jpeg

185 ms

_clear.gif

_clear.gif

188 ms

__utm.gif

__utm.gif

13 ms

__utm.gif

__utm.gif

4 ms

Accessibility Review

zambutomirrors.com accessibility score

71

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

zambutomirrors.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

zambutomirrors.com SEO score

100

Search Engine Optimization Advices

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

High

Document uses legible font sizes

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 Zambutomirrors.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 Zambutomirrors.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

zambutomirrors.com

Open Graph description is not detected on the main page of Zambuto Mirrors. 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: