Tools & Wizards About Us
39slim.com screenshot

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 48

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

39slim.com

#1 CoolSculpting Elite Practice in the Area!

Page Load Speed

634 ms in total

First Response

44 ms

Resources Loaded

437 ms

Page Rendered

153 ms

39slim.com screenshot

About Website

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Key Findings

We analyzed 39slim.com page load time and found that the first response time was 44 ms and then it took 590 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

39slim.com performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value610 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.08

94/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

Network Requests Diagram

www.39slim.com

44 ms

site.css

19 ms

duel.js

34 ms

swap.js

41 ms

js

97 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 9% of them (3 requests) were addressed to the original 39slim.com, 34% (11 requests) were made to Img1.wsimg.com and 31% (10 requests) were made to Nebula.wsimg.com. The less responsive or slowest element that took the longest time to load (129 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 128.8 kB (28%)

Content Size

454.9 kB

After Optimization

326.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 39slim.com main page is 454.9 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. 50% of websites need less resources to load. Images take 226.1 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 31.1 kB

  • Original 40.6 kB
  • After minification 40.6 kB
  • After compression 9.5 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 31.1 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 9.4 kB

  • Original 226.1 kB
  • After minification 216.7 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. 39 Slim images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 88.3 kB

  • Original 181.0 kB
  • After minification 180.9 kB
  • After compression 92.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 88.3 kB or 49% of the original size.

CSS Optimization

-0%

Potential reduce by 30 B

  • Original 7.1 kB
  • After minification 7.1 kB
  • After compression 7.1 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. 39slim.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 12 (46%)

Requests Now

26

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 39 Slim. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.39slim.com

www.39slim.com

44 ms

site.css

site.css

19 ms

duel.js

duel.js

34 ms

swap.js

swap.js

41 ms

js

js

97 ms

scc-c2.min.js

scc-c2.min.js

18 ms

jq.js

jq.js

15 ms

99115692b3383f21a882a0b5bb4c7abd

99115692b3383f21a882a0b5bb4c7abd

36 ms

gtm.js

gtm.js

78 ms

subNavigation.js

subNavigation.js

8 ms

cookiemanager.js

cookiemanager.js

32 ms

iebackground.js

iebackground.js

35 ms

0b5e078d7bded936283fadc20dd75c9d

0b5e078d7bded936283fadc20dd75c9d

73 ms

04d436ced96bffd8224d3f716ed46ef7

04d436ced96bffd8224d3f716ed46ef7

31 ms

d023feb8535e02eace7e81067bf22f25

d023feb8535e02eace7e81067bf22f25

74 ms

0399f0500b61266e0d24cf66dac07543

0399f0500b61266e0d24cf66dac07543

75 ms

db6d6e8e9d0354356b0cbe65ba547931

db6d6e8e9d0354356b0cbe65ba547931

33 ms

bfbcbfd1a1fac80a192d3c95a09c8cb1

bfbcbfd1a1fac80a192d3c95a09c8cb1

35 ms

efa537d43c51945fc27cd632833d7a1f

efa537d43c51945fc27cd632833d7a1f

36 ms

368bea7d6227eb3b20b5454e1cef21fa

368bea7d6227eb3b20b5454e1cef21fa

38 ms

d082a321c2e031e28d3186f4b989c21c

d082a321c2e031e28d3186f4b989c21c

39 ms

util.window.js

util.window.js

77 ms

js

js

129 ms

analytics.js

analytics.js

33 ms

swap.js

swap.js

90 ms

fbevents.js

fbevents.js

97 ms

collect

collect

78 ms

collect

collect

95 ms

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuXMQQ.woff

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuXMQQ.woff

65 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

65 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

68 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

65 ms

Accessibility Review

39slim.com accessibility score

48

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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

39slim.com best practices score

67

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

39slim.com SEO score

85

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 39slim.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 39slim.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

39slim.com

Open Graph data is detected on the main page of 39 Slim. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: