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jflex.de screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jflex.de

JFlex - JFlex The Fast Scanner Generator for Java

Page Load Speed

953 ms in total

First Response

167 ms

Resources Loaded

688 ms

Page Rendered

98 ms

jflex.de screenshot

About Website

Welcome to jflex.de homepage info - get ready to check JFlex best content for Egypt right away, or after learning these important things about jflex.de

This is the homepage of JFlex. JFlex is a lexer/scanner generator for Java, written in Java, with emphasis on Unicode support, speed and platform independence

Visit jflex.de

Key Findings

We analyzed Jflex.de page load time and found that the first response time was 167 ms and then it took 786 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

jflex.de performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

84/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

86/100

25%

SI (Speed Index)

Value2.1 s

99/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.3 s

99/100

10%

Network Requests Diagram

jflex.de

167 ms

jflex.de

269 ms

bootstrap.min.css

131 ms

jflex.css

194 ms

jquery.min.js

19 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 Jflex.de, 10% (1 request) were made to Ajax.googleapis.com and 10% (1 request) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (269 ms) belongs to the original domain Jflex.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.3 kB (5%)

Content Size

99.6 kB

After Optimization

94.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jflex.de main page is 99.6 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 10% of websites need less resources to load. Javascripts take 67.3 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 4.4 kB

  • Original 6.9 kB
  • After minification 6.2 kB
  • After compression 2.4 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 4.4 kB or 64% of the original size.

Image Optimization

-15%

Potential reduce by 870 B

  • Original 5.9 kB
  • After minification 5.1 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, JFlex needs image optimization as it can save up to 870 B or 15% 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 23 B

  • Original 67.3 kB
  • After minification 67.3 kB
  • After compression 67.3 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

-0%

Potential reduce by 28 B

  • Original 19.5 kB
  • After minification 19.5 kB
  • After compression 19.4 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. Jflex.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (38%)

Requests Now

8

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JFlex. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

jflex.de

jflex.de

167 ms

jflex.de

jflex.de

269 ms

bootstrap.min.css

bootstrap.min.css

131 ms

jflex.css

jflex.css

194 ms

jquery.min.js

jquery.min.js

19 ms

bootstrap.min.js

bootstrap.min.js

224 ms

platform.js

platform.js

27 ms

jflex.js

jflex.js

223 ms

GitHub-Mark-Light-64px.png

GitHub-Mark-Light-64px.png

244 ms

jflex-black.png

jflex-black.png

245 ms

Accessibility Review

jflex.de 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

jflex.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

jflex.de SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Jflex.de 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 Jflex.de 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

jflex.de

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