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cerf-notebook.com screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

cerf-notebook.com

CERF - Best ELN for Total Scientific Data Management

Page Load Speed

4.2 sec in total

First Response

627 ms

Resources Loaded

3.1 sec

Page Rendered

445 ms

cerf-notebook.com screenshot

About Website

Visit cerf-notebook.com now to see the best up-to-date CERF Notebook content and also check out these interesting facts you probably never knew about cerf-notebook.com

CERF Electronic Lab Notebook, award-winning, best electronic lab notebook, best ELN for scientific and commercial research.

Visit cerf-notebook.com

Key Findings

We analyzed Cerf-notebook.com page load time and found that the first response time was 627 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

cerf-notebook.com performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value7.0 s

33/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.122

84/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

cerf-notebook.com

627 ms

style.min.css

133 ms

style.min.css

200 ms

style.min.css

275 ms

front.min.css

256 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 93% of them (14 requests) were addressed to the original Cerf-notebook.com, 7% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (627 ms) belongs to the original domain Cerf-notebook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 216.7 kB (31%)

Content Size

705.4 kB

After Optimization

488.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cerf-notebook.com main page is 705.4 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. 20% of websites need less resources to load. Images take 546.8 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 112.4 kB

  • Original 134.2 kB
  • After minification 132.7 kB
  • After compression 21.8 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 112.4 kB or 84% of the original size.

Image Optimization

-19%

Potential reduce by 104.2 kB

  • Original 546.8 kB
  • After minification 442.6 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, CERF Notebook needs image optimization as it can save up to 104.2 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 31 B

  • Original 17.8 kB
  • After minification 17.8 kB
  • After compression 17.8 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.

CSS Optimization

-1%

Potential reduce by 58 B

  • Original 6.5 kB
  • After minification 6.5 kB
  • After compression 6.5 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. Cerf-notebook.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 7 (50%)

Requests Now

14

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CERF Notebook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cerf-notebook.com

cerf-notebook.com

627 ms

style.min.css

style.min.css

133 ms

style.min.css

style.min.css

200 ms

style.min.css

style.min.css

275 ms

front.min.css

front.min.css

256 ms

front.min.js

front.min.js

275 ms

js

js

64 ms

view.min.js

view.min.js

254 ms

lazyload.min.js

lazyload.min.js

226 ms

wp-polyfill-importmap.min.js

wp-polyfill-importmap.min.js

87 ms

cropped-CERF_512.png

cropped-CERF_512.png

188 ms

CERF-ELN-on-Youtube.webp

CERF-ELN-on-Youtube.webp

208 ms

CERF-File-Cabinets.webp

CERF-File-Cabinets.webp

207 ms

CERF-Notebooks-1024x778.webp

CERF-Notebooks-1024x778.webp

192 ms

cerf-5-pressrel_square.png

cerf-5-pressrel_square.png

410 ms

Accessibility Review

cerf-notebook.com accessibility score

98

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.

Best Practices

cerf-notebook.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cerf-notebook.com SEO score

99

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

High

Tap targets are not sized appropriately

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 Cerf-notebook.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 Cerf-notebook.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

cerf-notebook.com

Open Graph data is detected on the main page of CERF Notebook. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: