Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 85% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 69

    SEO

    Google-friendlier than
    37% of websites

libpng.org

libpng.org: top level

Page Load Speed

448 ms in total

First Response

117 ms

Resources Loaded

245 ms

Page Rendered

86 ms

libpng.org screenshot

About Website

Welcome to libpng.org homepage info - get ready to check Libpng best content for United States right away, or after learning these important things about libpng.org

Visit libpng.org

Key Findings

We analyzed Libpng.org page load time and found that the first response time was 117 ms and then it took 331 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

libpng.org performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

93/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.6 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)

Value1.6 s

100/100

10%

Network Requests Diagram

libpng.org

117 ms

libpng-88x31.png

32 ms

pngnow.png

56 ms

mngnow-bearcy.png

64 ms

libmng.png

61 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 83% of them (5 requests) were addressed to the original Libpng.org, 17% (1 request) were made to Sourceforge.net. The less responsive or slowest element that took the longest time to load (117 ms) belongs to the original domain Libpng.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 kB (18%)

Content Size

10.5 kB

After Optimization

8.6 kB

In fact, the total size of Libpng.org main page is 10.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 7.6 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 1.9 kB

  • Original 2.9 kB
  • After minification 2.4 kB
  • After compression 1.0 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 465 B, which is 16% 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 1.9 kB or 64% of the original size.

Image Optimization

-0%

Potential reduce by 7 B

  • Original 7.6 kB
  • After minification 7.6 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. Libpng images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Libpng. According to our analytics all requests are already optimized.

Accessibility Review

libpng.org accessibility score

92

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

libpng.org best practices score

75

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

SEO Factors

libpng.org SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Libpng.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 Libpng.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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