Access zxing.org. ZXing Decoder Online

Report Summary

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.2 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

decode.jspx

91 ms

style.css

85 ms

zxing-icon.png

168 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Zxing.org and no external sources were called. The less responsive or slowest element that took the longest time to load (168 ms) belongs to the original domain Zxing.org.

Content Size

3.2 kB

After Optimization

1.9 kB

In fact, the total size of Zxing.org main page is 3.2 kB. This result falls within a big category (top 100 000) of medium weight web pages. Only a small number of websites need less resources to load. HTML takes 1.8 kB which makes up the majority of the site volume.

HTML Optimization

-54%

Potential reduce by 962 B

Original 1.8 kB
After minification 1.8 kB
After compression 828 B

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 962 B or 54% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 815 B
After minification 815 B

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. ZXing images are well optimized though.

CSS Optimization

-51%

Potential reduce by 281 B

Original 554 B
After minification 542 B
After compression 273 B

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. Zxing.org needs all CSS files to be minified and compressed as it can save up to 281 B or 51% of the original size.

Requests Now

After Optimization

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZXing. According to our analytics all requests are already optimized.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Search Engine Optimization Advices

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

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zxing.org 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 Zxing.org 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 ZXing. 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: