Tools & Wizards About Us
tetra.com screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

tetra.com

Tetra | Heating & Cooling Replacement Quotes | HVAC Installations in MA

Page Load Speed

3.7 sec in total

First Response

33 ms

Resources Loaded

1.2 sec

Page Rendered

2.5 sec

tetra.com screenshot

About Website

Click here to check amazing Tetra content for Indonesia. Otherwise, check out these important facts you probably never knew about tetra.com

Get a free, instant quote for a furnace, boiler or high efficiency air conditioner replacement in your Massachusetts home. HVAC system installations performed by trusted local installers.

Visit tetra.com

Key Findings

We analyzed Tetra.com page load time and found that the first response time was 33 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

tetra.com performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value20.1 s

0/100

25%

SI (Speed Index)

Value7.9 s

22/100

10%

TBT (Total Blocking Time)

Value1,500 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.038

100/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

tetra.com

33 ms

tetra.com

59 ms

www.tetra.com

603 ms

tetra-alt.96898299c.min.css

54 ms

jquery-3.5.1.min.dc5e7f18c8.js

28 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 5% of them (3 requests) were addressed to the original Tetra.com, 67% (42 requests) were made to Cdn.prod.website-files.com and 21% (13 requests) were made to Assets.website-files.com. The less responsive or slowest element that took the longest time to load (603 ms) belongs to the original domain Tetra.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 660.0 kB (16%)

Content Size

4.0 MB

After Optimization

3.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tetra.com 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. 80% 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 3.8 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 48.4 kB

  • Original 63.5 kB
  • After minification 63.0 kB
  • After compression 15.1 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 48.4 kB or 76% of the original size.

Image Optimization

-16%

Potential reduce by 611.6 kB

  • Original 3.8 MB
  • After minification 3.2 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. Obviously, Tetra needs image optimization as it can save up to 611.6 kB or 16% 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 0 B

  • Original 123.1 kB
  • After minification 123.1 kB
  • After compression 123.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 49.2 kB
  • After minification 49.2 kB
  • After compression 49.2 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. Tetra.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (38%)

Requests Now

47

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tetra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tetra.com

tetra.com

33 ms

tetra.com

tetra.com

59 ms

www.tetra.com

www.tetra.com

603 ms

tetra-alt.96898299c.min.css

tetra-alt.96898299c.min.css

54 ms

jquery-3.5.1.min.dc5e7f18c8.js

jquery-3.5.1.min.dc5e7f18c8.js

28 ms

tetra-alt.b0e81bef7.js

tetra-alt.b0e81bef7.js

103 ms

jquery.min.js

jquery.min.js

42 ms

waypoints.min.js

waypoints.min.js

102 ms

jquery.counterup.min.js

jquery.counterup.min.js

44 ms

gtm.js

gtm.js

89 ms

62b1d10f5edaf6f3a757a659_Logo.svg

62b1d10f5edaf6f3a757a659_Logo.svg

34 ms

62b5697e7b892d42d01550d3_Vector.svg

62b5697e7b892d42d01550d3_Vector.svg

45 ms

62acc25ba545181ca2de0c9e_Tetra%20Logo.svg

62acc25ba545181ca2de0c9e_Tetra%20Logo.svg

41 ms

62acc25ba5451852e8de0c9d_Chevron%20Down%20Icon.svg

62acc25ba5451852e8de0c9d_Chevron%20Down%20Icon.svg

43 ms

62b9c0d9d1d35d341bb51542_1838012%202.png

62b9c0d9d1d35d341bb51542_1838012%202.png

45 ms

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62acc25ba54518718dde0cea_System%3DNavien%201.png

48 ms

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62b9db1ef2e3dc5cbe1f9666_6f44b041afe89a1d82d56ad5f7b0df1f.png

49 ms

64b57f823518bd3b38a8aaae_Hero.webp

64b57f823518bd3b38a8aaae_Hero.webp

64 ms

62acc720bf6c6c7149a1e292_Vector.svg

62acc720bf6c6c7149a1e292_Vector.svg

53 ms

62b1d2777426cd606e264b37_hero-alt-arro.svg

62b1d2777426cd606e264b37_hero-alt-arro.svg

55 ms

64c01451c0b2f436d9ad9742_noise.svg

64c01451c0b2f436d9ad9742_noise.svg

57 ms

62acc25ba54518adbbde0cc3_stars.svg

62acc25ba54518adbbde0cc3_stars.svg

62 ms

62acc42842130d8d7b5b6082_Group%205213.svg

62acc42842130d8d7b5b6082_Group%205213.svg

66 ms

62acc25ba5451811dede0ccb_Noise.png

62acc25ba5451811dede0ccb_Noise.png

90 ms

62cc4293bee59ee2b40cc59a_9e948ac582ab62fd59e96fff687b7f8e%20copy.jpeg

62cc4293bee59ee2b40cc59a_9e948ac582ab62fd59e96fff687b7f8e%20copy.jpeg

88 ms

62be7d28a0063982fbf4a22d_Group%201.svg

62be7d28a0063982fbf4a22d_Group%201.svg

86 ms

62b142feec21c97b475e523b_check.svg

62b142feec21c97b475e523b_check.svg

92 ms

62acc25ba54518f807de0cd1_avatar.png

62acc25ba54518f807de0cd1_avatar.png

92 ms

62b54ea6fd674f4be128fb9b_Modal%202.png

62b54ea6fd674f4be128fb9b_Modal%202.png

88 ms

62b54ea67b892d496314b0ca_Modal%201.png

62b54ea67b892d496314b0ca_Modal%201.png

93 ms

62acc3f390738679fdcd63cf_Green%20Arrow.svg

62acc3f390738679fdcd63cf_Green%20Arrow.svg

94 ms

62acc25ba545183021de0cd3_Rectangle.png

62acc25ba545183021de0cd3_Rectangle.png

95 ms

62b550d0fd674f3f8a290f34_photo%20of%20person.jpg

62b550d0fd674f3f8a290f34_photo%20of%20person.jpg

96 ms

62b550d04c3ed093920dc6c3_photo%20of%20person-1.jpg

62b550d04c3ed093920dc6c3_photo%20of%20person-1.jpg

98 ms

62b550d055d00492b55f289b_photo%20of%20person-3.jpg

62b550d055d00492b55f289b_photo%20of%20person-3.jpg

96 ms

62b550d050a0c907a66d8eef_photo%20of%20person-4.jpg

62b550d050a0c907a66d8eef_photo%20of%20person-4.jpg

115 ms

62b550cfed3ca374c2305003_photo%20of%20person-5.jpg

62b550cfed3ca374c2305003_photo%20of%20person-5.jpg

101 ms

62b550d07691c31d9af6365b_photo%20of%20person-2.jpg

62b550d07691c31d9af6365b_photo%20of%20person-2.jpg

102 ms

62ba208c96d2db80ab4be2ad_Icon.svg

62ba208c96d2db80ab4be2ad_Icon.svg

108 ms

62acc25ba54518432ede0cd5_icon.svg

62acc25ba54518432ede0cd5_icon.svg

106 ms

62acc3780bea705213019097_Vecor.svg

62acc3780bea705213019097_Vecor.svg

109 ms

62acc25ba545185821de0cd9_avatar%203.png

62acc25ba545185821de0cd9_avatar%203.png

115 ms

659847a72a07ea53ff13b042_Rectangle-194.webp

659847a72a07ea53ff13b042_Rectangle-194.webp

115 ms

62acc25ba545187c23de0cd8_Imag%204.png

62acc25ba545187c23de0cd8_Imag%204.png

121 ms

62acc25ba545182058de0cda_avatar%202.png

62acc25ba545182058de0cda_avatar%202.png

116 ms

62acc25ba545181651de0cde_Grass%20Image.png

62acc25ba545181651de0cde_Grass%20Image.png

112 ms

65cd10ec2637a3d6ca7df48c_Vectors-Wrapper.svg

65cd10ec2637a3d6ca7df48c_Vectors-Wrapper.svg

97 ms

62acc25ba5451892afde0cdf_Arrow%204.svg

62acc25ba5451892afde0cdf_Arrow%204.svg

92 ms

624380709031621ef64aee78_icon_plus.svg

624380709031621ef64aee78_icon_plus.svg

92 ms

62acc25ba54518fb48de0c9f_Footer%20Logo.svg

62acc25ba54518fb48de0c9f_Footer%20Logo.svg

92 ms

62acc25ba545183319de0cb2_SharpGroteskMedium21.ttf

62acc25ba545183319de0cb2_SharpGroteskMedium21.ttf

24 ms

62acc25ba545185745de0caf_SharpGroteskLight21.ttf

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41 ms

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198 ms

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59 ms

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125 ms

664dfa251ba7031d51c3f938_SharpGrotesk-Medium20.otf

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46 ms

664dfa25b7251a424eadcb37_SharpGrotesk-Book20.otf

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46 ms

664dfa28e1a99495b230ffb2_SharpGrotesk-Bold20.otf

664dfa28e1a99495b230ffb2_SharpGrotesk-Bold20.otf

59 ms

62acc25ba545180e51de0ca9_SharpGroteskBook19.ttf

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59 ms

62acc25ba545185321de0cb1_SharpGroteskMedium19.ttf

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60 ms

62acc25ba545183f54de0cbd_SharpGroteskThin19.ttf

62acc25ba545183f54de0cbd_SharpGroteskThin19.ttf

140 ms

62acc25ba545180553de0cb0_SharpGroteskBold19.ttf

62acc25ba545180553de0cb0_SharpGroteskBold19.ttf

204 ms

62acc25ba5451853edde0caa_SharpGroteskBlack19.ttf

62acc25ba5451853edde0caa_SharpGroteskBlack19.ttf

60 ms

Accessibility Review

tetra.com accessibility score

91

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

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

tetra.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

tetra.com SEO score

100

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

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 Tetra.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 Tetra.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

tetra.com

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