Tools & Wizards About Us
zista.co screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zista.co

Zista Group - Bitumen, Natural Bitumen, Oxidized Bitumen, Gilsonite

Page Load Speed

3.7 sec in total

First Response

882 ms

Resources Loaded

2.6 sec

Page Rendered

231 ms

zista.co screenshot

About Website

Click here to check amazing Zista content for Iran. Otherwise, check out these important facts you probably never knew about zista.co

Zista Group - Supplying Bitumen, Natural Bitumen, Oxidized Bitumen, Gilsonite

Visit zista.co

Key Findings

We analyzed Zista.co page load time and found that the first response time was 882 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

zista.co performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.4 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value430 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0.191

64/100

15%

TTI (Time to Interactive)

Value12.8 s

13/100

10%

Network Requests Diagram

zista.co

882 ms

css

21 ms

reset.css

200 ms

style.css

202 ms

font-awesome.min.css

299 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 85% of them (63 requests) were addressed to the original Zista.co, 14% (10 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Zista.co.

Page Optimization Overview & Recommendations

Page size can be reduced by 776.3 kB (34%)

Content Size

2.3 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zista.co main page is 2.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 19.2 kB

  • Original 24.6 kB
  • After minification 20.5 kB
  • After compression 5.4 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. This page needs HTML code to be minified as it can gain 4.1 kB, which is 17% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 19.2 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 6.5 kB

  • Original 1.3 MB
  • After minification 1.3 MB

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. Zista images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 498.7 kB

  • Original 637.8 kB
  • After minification 472.9 kB
  • After compression 139.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 498.7 kB or 78% of the original size.

CSS Optimization

-87%

Potential reduce by 252.0 kB

  • Original 289.8 kB
  • After minification 232.5 kB
  • After compression 37.9 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. Zista.co needs all CSS files to be minified and compressed as it can save up to 252.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (49%)

Requests Now

57

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zista. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zista.co

zista.co

882 ms

css

css

21 ms

reset.css

reset.css

200 ms

style.css

style.css

202 ms

font-awesome.min.css

font-awesome.min.css

299 ms

responsive-leyouts.css

responsive-leyouts.css

301 ms

core.css

core.css

208 ms

jetmenu.css

jetmenu.css

304 ms

settings.css

settings.css

305 ms

slider_main.css

slider_main.css

305 ms

skin2.css

skin2.css

309 ms

skin3.css

skin3.css

402 ms

accordion.css

accordion.css

404 ms

cubeportfolio.min.css

cubeportfolio.min.css

421 ms

demo.css

demo.css

915 ms

cubeportfolio.min.css

cubeportfolio.min.css

507 ms

cols4.css

cols4.css

412 ms

common.css

common.css

502 ms

ui.progress-bar.css

ui.progress-bar.css

505 ms

jquery.js

jquery.js

817 ms

jquery-1.js

jquery-1.js

625 ms

styleselector.js

styleselector.js

511 ms

progress.js

progress.js

516 ms

jquery.jcarousel.min.js

jquery.jcarousel.min.js

516 ms

jquery.themepunch.plugins.min.js

jquery.themepunch.plugins.min.js

710 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

713 ms

custom.js

custom.js

617 ms

core.js

core.js

718 ms

modernizr.custom.75180.js

modernizr.custom.75180.js

721 ms

jetmenu.js

jetmenu.js

808 ms

jquery.cubeportfolio.min.js

jquery.cubeportfolio.min.js

811 ms

main.js

main.js

818 ms

responsiveslides.min.js

responsiveslides.min.js

1306 ms

jquery.cubeportfolio.min.js

jquery.cubeportfolio.min.js

1001 ms

main.js

main.js

906 ms

codestyle.css

codestyle.css

808 ms

Default.aspx

Default.aspx

595 ms

Default.aspx

Default.aspx

706 ms

Default.aspx

Default.aspx

191 ms

Default.aspx

Default.aspx

194 ms

main-bg.jpg

main-bg.jpg

129 ms

top-bg.jpg

top-bg.jpg

129 ms

logo.png

logo.png

128 ms

slider1.jpg

slider1.jpg

332 ms

slider2.jpg

slider2.jpg

201 ms

slider3.jpg

slider3.jpg

202 ms

side-bg.jpg

side-bg.jpg

204 ms

siteimg3.png

siteimg3.png

439 ms

para-bg2.jpg

para-bg2.jpg

300 ms

map01.png

map01.png

304 ms

img6.png

img6.png

383 ms

img7.jpg

img7.jpg

398 ms

img8.jpg

img8.jpg

403 ms

img9.jpg

img9.jpg

429 ms

img11.jpg

img11.jpg

480 ms

bg-graph3.jpg

bg-graph3.jpg

494 ms

footer-line.png

footer-line.png

499 ms

scroll-top-arrow.png

scroll-top-arrow.png

526 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

7 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

13 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

21 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

18 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

19 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

412 ms

KFOlCnqEu92Fr1MmSU5fChc9.ttf

KFOlCnqEu92Fr1MmSU5fChc9.ttf

18 ms

KFOkCnqEu92Fr1MmgVxGIzc.ttf

KFOkCnqEu92Fr1MmgVxGIzc.ttf

18 ms

KFOmCnqEu92Fr1Mu7GxP.ttf

KFOmCnqEu92Fr1Mu7GxP.ttf

17 ms

KFOlCnqEu92Fr1MmEU9fChc9.ttf

KFOlCnqEu92Fr1MmEU9fChc9.ttf

21 ms

KFOlCnqEu92Fr1MmWUlfChc9.ttf

KFOlCnqEu92Fr1MmWUlfChc9.ttf

32 ms

Default.aspx

Default.aspx

297 ms

loader.gif

loader.gif

99 ms

timer.png

timer.png

101 ms

large_left.png

large_left.png

100 ms

large_right.png

large_right.png

100 ms

Accessibility Review

zista.co accessibility score

63

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

High

Links do not have a discernible name

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

zista.co best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

zista.co 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 Zista.co 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 Zista.co 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

zista.co

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