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Journal of Negative Results in Biomedicine (JNRBM) will cease to be published by BioMed Central as of 1stSeptember 2017. BioMed Central will continue to host ...

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name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value1.9 s

100/100

10%

TBT (Total Blocking Time)

Value720 ms

41/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

jnrbm.biomedcentral.com

126 ms

jnrbm.biomedcentral.com

161 ms

core-eac3097aa4.css

5 ms

consent-bundle-15-36.js

46 ms

logo-bmc-white-aj-be532aa3f0.svg

5 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 80% of them (8 requests) were addressed to the original Jnrbm.biomedcentral.com, 10% (1 request) were made to Cmp.biomedcentral.com and 10% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (161 ms) belongs to the original domain Jnrbm.biomedcentral.com.

Content Size

219.7 kB

After Optimization

89.0 kB

In fact, the total size of Jnrbm.biomedcentral.com main page is 219.7 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 5% of websites need less resources to load. HTML takes 183.0 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 130.8 kB

Original 183.0 kB
After minification 170.4 kB
After compression 52.2 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 130.8 kB or 71% of the original size.

JavaScript Optimization

-0%

Potential reduce by 5 B

Original 36.8 kB
After minification 36.8 kB
After compression 36.7 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 Now

After Optimization

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

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-*] attributes do not match their roles

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

High

robots.txt is not valid

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/).

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 Jnrbm.biomedcentral.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 Jnrbm.biomedcentral.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

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