Tools & Wizards About Us
tool.lu screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    77% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 97

    SEO

    Google-friendlier than
    92% of websites

tool.lu

在线工具 - 你的工具箱

Page Load Speed

37.4 sec in total

First Response

1.9 sec

Resources Loaded

35 sec

Page Rendered

428 ms

tool.lu screenshot

About Website

Click here to check amazing Tool content for China. Otherwise, check out these important facts you probably never knew about tool.lu

在线工具,开发人员工具,代码格式化、压缩、加密、解密,下载链接转换,json格式化,正则测试工具,favicon在线制作,字帖工具,中文简繁体转换,迅雷下载链接转换,进制转换,二维码,照片压缩,pdf合并

Visit tool.lu

Key Findings

We analyzed Tool.lu page load time and found that the first response time was 1.9 sec and then it took 35.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

tool.lu performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

16/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value7.9 s

43/100

10%

Network Requests Diagram

tool.lu

1934 ms

s2.tool.lu

13723 ms

te.js

1559 ms

s3.tool.lu

9897 ms

s4.tool.lu

1514 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 6% of them (1 request) were addressed to the original Tool.lu, 25% (4 requests) were made to S2.tool.lu and 19% (3 requests) were made to Analytics.tool.lu. The less responsive or slowest element that took the longest time to load (19.3 sec) relates to the external source Qn11.tool.lu.

Page Optimization Overview & Recommendations

Page size can be reduced by 222.4 kB (84%)

Content Size

263.6 kB

After Optimization

41.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tool.lu main page is 263.6 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. CSS take 124.3 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 55.2 kB

  • Original 62.4 kB
  • After minification 54.5 kB
  • After compression 7.3 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 7.9 kB, which is 13% 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 55.2 kB or 88% of the original size.

Image Optimization

-79%

Potential reduce by 59.5 kB

  • Original 75.4 kB
  • After minification 15.9 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, Tool needs image optimization as it can save up to 59.5 kB or 79% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-40%

Potential reduce by 578 B

  • Original 1.5 kB
  • After minification 1.3 kB
  • After compression 873 B

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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 578 B or 40% of the original size.

CSS Optimization

-86%

Potential reduce by 107.1 kB

  • Original 124.3 kB
  • After minification 106.0 kB
  • After compression 17.2 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. Tool.lu needs all CSS files to be minified and compressed as it can save up to 107.1 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (27%)

Requests Now

15

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tool. 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 as a result speed up the page load time.

Network Requests Diagram

tool.lu

tool.lu

1934 ms

s2.tool.lu

s2.tool.lu

13723 ms

te.js

te.js

1559 ms

s3.tool.lu

s3.tool.lu

9897 ms

s4.tool.lu

s4.tool.lu

1514 ms

6EQN7AlXGNO4JeYk_32x32.png

6EQN7AlXGNO4JeYk_32x32.png

3620 ms

pQGN8Q9v5AQ4i78J_14x1.png

pQGN8Q9v5AQ4i78J_14x1.png

4095 ms

ScUQjUOriNA1Wrqv_250x500.png

ScUQjUOriNA1Wrqv_250x500.png

19255 ms

swap-link.png

swap-link.png

4557 ms

heart.png

heart.png

1694 ms

logo_88x31.gif

logo_88x31.gif

1660 ms

h.js

h.js

775 ms

t-fixed.png

t-fixed.png

1222 ms

hm.gif

hm.gif

340 ms

ta.js

ta.js

451 ms

__tm.gif

__tm.gif

434 ms

Accessibility Review

tool.lu accessibility score

76

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.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

tool.lu 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

tool.lu SEO score

97

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tool.lu can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Tool.lu 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

tool.lu

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