Tools & Wizards About Us
15robots.com screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

15robots.com

Concrete CMS Is An Open Source Content Management System For Teams

Page Load Speed

1.2 sec in total

First Response

54 ms

Resources Loaded

629 ms

Page Rendered

552 ms

15robots.com screenshot

About Website

Click here to check amazing 15 Robots content for Russia. Otherwise, check out these important facts you probably never knew about 15robots.com

Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy.

Visit 15robots.com

Key Findings

We analyzed 15robots.com page load time and found that the first response time was 54 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

15robots.com performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value5.6 s

54/100

10%

TBT (Total Blocking Time)

Value1,290 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value14.3 s

9/100

10%

Network Requests Diagram

15robots.com

54 ms

www.concrete5.org

54 ms

www.concretecms.com

39 ms

main.css

9 ms

all.css

38 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original 15robots.com, 86% (42 requests) were made to Concretecms.com and 6% (3 requests) were made to Analytics.portlandlabs.com. The less responsive or slowest element that took the longest time to load (206 ms) relates to the external source Analytics.portlandlabs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 174.0 kB (25%)

Content Size

701.8 kB

After Optimization

527.8 kB

  • HTML
  • Images
  • CSS

In fact, the total size of 15robots.com main page is 701.8 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. 70% of websites need less resources to load. Images take 581.3 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 38.4 kB

  • Original 47.0 kB
  • After minification 34.1 kB
  • After compression 8.6 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 12.9 kB, which is 27% 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 38.4 kB or 82% of the original size.

Image Optimization

-23%

Potential reduce by 133.6 kB

  • Original 581.3 kB
  • After minification 447.8 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, 15 Robots needs image optimization as it can save up to 133.6 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-3%

Potential reduce by 2.0 kB

  • Original 73.5 kB
  • After minification 73.5 kB
  • After compression 71.5 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. 15robots.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (31%)

Requests Now

32

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 15 Robots. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

15robots.com

15robots.com

54 ms

www.concrete5.org

www.concrete5.org

54 ms

www.concretecms.com

www.concretecms.com

39 ms

main.css

main.css

9 ms

all.css

all.css

38 ms

jquery.js

jquery.js

38 ms

frontend.css

frontend.css

37 ms

loader.js

loader.js

168 ms

vue.js

vue.js

64 ms

bootstrap.js

bootstrap.js

72 ms

moment.js

moment.js

73 ms

js

js

111 ms

js

js

79 ms

main.js

main.js

78 ms

container_zl0yAzV2.js

container_zl0yAzV2.js

75 ms

gtm.js

gtm.js

114 ms

logo_text.svg

logo_text.svg

28 ms

logo.svg

logo.svg

34 ms

Concrete5_Sc_3.ai_gc.png

Concrete5_Sc_3.ai_gc.png

36 ms

basf.jpg

basf.jpg

36 ms

global_sign.png

global_sign.png

29 ms

Logo_of_the_United_States_Army_2023.svg

Logo_of_the_United_States_Army_2023.svg

32 ms

150.png

150.png

32 ms

the_home_depot_150_x_75px.png

the_home_depot_150_x_75px.png

36 ms

Ben.png

Ben.png

38 ms

fa-fa-quote-left.png

fa-fa-quote-left.png

54 ms

ef-champion-ribbon-2020_2.jpg

ef-champion-ribbon-2020_2.jpg

37 ms

Concrete5_Sc_5_gc2.png

Concrete5_Sc_5_gc2.png

53 ms

stefanGlut.png

stefanGlut.png

53 ms

Concrete5_Sc_11_gc.png

Concrete5_Sc_11_gc.png

54 ms

Tim-Macknelly.jpeg

Tim-Macknelly.jpeg

48 ms

hippa-security-certifications.jpeg

hippa-security-certifications.jpeg

64 ms

melanieReagin.png

melanieReagin.png

55 ms

matomo.php

matomo.php

206 ms

configs.php

configs.php

23 ms

poppins-all-700.woff

poppins-all-700.woff

35 ms

poppins-all-800.woff

poppins-all-800.woff

35 ms

poppins-all-900.woff

poppins-all-900.woff

16 ms

poppins-all-600.woff

poppins-all-600.woff

8 ms

poppins-all-500.woff

poppins-all-500.woff

14 ms

poppins-all-400.woff

poppins-all-400.woff

32 ms

poppins-all-300.woff

poppins-all-300.woff

32 ms

poppins-all-200.woff

poppins-all-200.woff

75 ms

poppins-all-100.woff

poppins-all-100.woff

32 ms

noto-sans-all-700-normal.woff

noto-sans-all-700-normal.woff

74 ms

noto-sans-all-400-normal.woff

noto-sans-all-400-normal.woff

37 ms

fa-solid-900.woff

fa-solid-900.woff

32 ms

fa-regular-400.woff

fa-regular-400.woff

95 ms

fa-brands-400.woff

fa-brands-400.woff

37 ms

Accessibility Review

15robots.com accessibility score

93

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

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

15robots.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

15robots.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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 15robots.com 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 15robots.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

15robots.com

Open Graph description is not detected on the main page of 15 Robots. 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: