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slt.co screenshot

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

slt.co

Safe Living Technologies

Page Load Speed

2.3 sec in total

First Response

457 ms

Resources Loaded

1.3 sec

Page Rendered

520 ms

slt.co screenshot

About Website

Visit slt.co now to see the best up-to-date Slt content for Canada and also check out these interesting facts you probably never knew about slt.co

Safe Living Technologies provides knowledge and technology to help create a safe living and working environment free of EMF and RF Exposures.

Visit slt.co

Key Findings

We analyzed Slt.co page load time and found that the first response time was 457 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

slt.co performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value16.6 s

0/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value1,820 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.296

40/100

15%

TTI (Time to Interactive)

Value12.8 s

13/100

10%

Network Requests Diagram

slt.co

457 ms

SLT.css

102 ms

WebResource.axd

34 ms

WebResource.axd

40 ms

ScriptResource.axd

37 ms

Our browser made a total of 217 requests to load all elements on the main page. We found that 99% of them (215 requests) were addressed to the original Slt.co, 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (457 ms) belongs to the original domain Slt.co.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (36%)

Content Size

4.0 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Slt.co main page is 4.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 240.6 kB

  • Original 290.4 kB
  • After minification 280.3 kB
  • After compression 49.8 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 240.6 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 146.2 kB

  • Original 2.3 MB
  • After minification 2.2 MB

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. Slt images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 1.0 MB

  • Original 1.4 MB
  • After minification 1.3 MB
  • After compression 336.1 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 1.0 MB or 75% of the original size.

CSS Optimization

-84%

Potential reduce by 15.2 kB

  • Original 18.1 kB
  • After minification 12.1 kB
  • After compression 3.0 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. Slt.co needs all CSS files to be minified and compressed as it can save up to 15.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 175 (81%)

Requests Now

216

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 216 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Slt. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 171 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

slt.co

slt.co

457 ms

SLT.css

SLT.css

102 ms

WebResource.axd

WebResource.axd

34 ms

WebResource.axd

WebResource.axd

40 ms

ScriptResource.axd

ScriptResource.axd

37 ms

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105 ms

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74 ms

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35 ms

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36 ms

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36 ms

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64 ms

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62 ms

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62 ms

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64 ms

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184 ms

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254 ms

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261 ms

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262 ms

analytics.js

analytics.js

27 ms

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248 ms

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243 ms

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248 ms

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241 ms

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248 ms

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240 ms

collect

collect

138 ms

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121 ms

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129 ms

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137 ms

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94 ms

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95 ms

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95 ms

Site_Background.jpg

Site_Background.jpg

164 ms

Site_Logo.jpg

Site_Logo.jpg

166 ms

WebResource.axd

WebResource.axd

162 ms

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162 ms

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161 ms

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160 ms

Slideshow_Welcome.jpg

Slideshow_Welcome.jpg

165 ms

Distributor_Authorized.jpg

Distributor_Authorized.jpg

157 ms

Distributor_SwissShield.jpg

Distributor_SwissShield.jpg

157 ms

Distributor_Gigahertz.jpg

Distributor_Gigahertz.jpg

155 ms

SLT_Flag_CA_Grey.jpg

SLT_Flag_CA_Grey.jpg

155 ms

SLT_Flag_US.jpg

SLT_Flag_US.jpg

151 ms

Site_SearchBackground.jpg

Site_SearchBackground.jpg

151 ms

Site_SearchButton.jpg

Site_SearchButton.jpg

145 ms

DevraDavis&RobMetzinger.jpg

DevraDavis&RobMetzinger.jpg

212 ms

Source_CellTower.jpg

Source_CellTower.jpg

141 ms

Source_HomeWiring.jpg

Source_HomeWiring.jpg

141 ms

Source_HighVoltagePowerLines.jpg

Source_HighVoltagePowerLines.jpg

138 ms

Source_SmartMeter.jpg

Source_SmartMeter.jpg

138 ms

RFMeter-HF35C.jpg

RFMeter-HF35C.jpg

188 ms

Product_ClickForDetails.jpg

Product_ClickForDetails.jpg

136 ms

RFShieldingPaint-YShield-HSF54-1Litre-5Litres.jpg

RFShieldingPaint-YShield-HSF54-1Litre-5Litres.jpg

141 ms

EMFMeter-ME3830B.jpg

EMFMeter-ME3830B.jpg

187 ms

ShieldingFabric-SwissShieldNaturell.jpg

ShieldingFabric-SwissShieldNaturell.jpg

183 ms

RFShieldingFilm-SignalProtect-Clear-1.jpg

RFShieldingFilm-SignalProtect-Clear-1.jpg

167 ms

MK20.php.jpg

MK20.php.jpg

144 ms

SwissShieldNaturellCanopy1.jpg

SwissShieldNaturellCanopy1.jpg

169 ms

MK70-3DElectrosmogMeasuringKit.jpg

MK70-3DElectrosmogMeasuringKit.jpg

220 ms

AcoustimeterAM-10-withcase.jpg

AcoustimeterAM-10-withcase.jpg

191 ms

RemoteCutOffSwitch.jpg

RemoteCutOffSwitch.jpg

187 ms

EMF_Simulation.jpg

EMF_Simulation.jpg

213 ms

Site_ATLogo.jpg

Site_ATLogo.jpg

174 ms

Site_Header.jpg

Site_Header.jpg

186 ms

Site_Footer.jpg

Site_Footer.jpg

199 ms

LoadSlides

LoadSlides

178 ms

SLT_Content_Separator.jpg

SLT_Content_Separator.jpg

116 ms

Slideshow_ESmogToronto.jpg

Slideshow_ESmogToronto.jpg

40 ms

Slideshow_HydroWires.jpg

Slideshow_HydroWires.jpg

52 ms

Slideshow_CellTower.jpg

Slideshow_CellTower.jpg

35 ms

Slideshow_HiRise.jpg

Slideshow_HiRise.jpg

53 ms

Slideshow_MeasuringProducts.jpg

Slideshow_MeasuringProducts.jpg

55 ms

Slideshow_ShieldingProducts.jpg

Slideshow_ShieldingProducts.jpg

38 ms

Accessibility Review

slt.co accessibility score

68

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

<frame> or <iframe> elements do not have a title

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

slt.co best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

slt.co SEO score

83

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

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

High

Tap targets are not sized appropriately

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 Slt.co 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 Slt.co 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

slt.co

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