Report Summary

  • 81

    Performance

    Renders faster than
    86% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zmap.io

The ZMap Project

Page Load Speed

316 ms in total

First Response

77 ms

Resources Loaded

239 ms

Page Rendered

0 ms

zmap.io screenshot

About Website

Click here to check amazing ZMap content for United States. Otherwise, check out these important facts you probably never knew about zmap.io

The ZMap Project is a collection of open source tools that enable researchers to perform large-scale studies of the hosts and services that compose the public Internet.

Visit zmap.io

Key Findings

We analyzed Zmap.io page load time and found that the first response time was 77 ms and then it took 239 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

zmap.io performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

58/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

69/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

zmap.io

77 ms

zmap.io

46 ms

css

71 ms

bootstrap.min.css

39 ms

font-awesome.min.css

53 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 Zmap.io, 10% (1 request) were made to Fonts.googleapis.com and 10% (1 request) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (100 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.9 kB (48%)

Content Size

70.2 kB

After Optimization

36.3 kB

In fact, the total size of Zmap.io main page is 70.2 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. Only 10% of websites need less resources to load. Images take 61.2 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 6.0 kB

  • Original 9.0 kB
  • After minification 7.9 kB
  • After compression 2.9 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 1.1 kB, which is 12% 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 6.0 kB or 67% of the original size.

Image Optimization

-45%

Potential reduce by 27.8 kB

  • Original 61.2 kB
  • After minification 33.4 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. Obviously, ZMap needs image optimization as it can save up to 27.8 kB or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 3 (38%)

Requests Now

8

After Optimization

5

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZMap. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zmap.io accessibility score

100

Accessibility Issues

Best Practices

zmap.io best practices score

83

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

SEO Factors

zmap.io 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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zmap.io 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 Zmap.io 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

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