Tools & Wizards About Us
drzhangortho.com screenshot

Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

drzhangortho.com

West Roxbury & Sudbury Orthodontist- Boston Orthodontist-Dr. Gwen Zhang Orthodontist, Invisalign

Page Load Speed

731 ms in total

First Response

100 ms

Resources Loaded

443 ms

Page Rendered

188 ms

drzhangortho.com screenshot

About Website

Click here to check amazing Dr Zhang Ortho content. Otherwise, check out these important facts you probably never knew about drzhangortho.com

Orthodontic offices in West Roxbury and Sudbury, MA (617) 325-4442. Welcome patients from neighboring towns also - Boston, Brookline, Newton, Dedham, Needham, Foxborough, Rosendale, Hyde Park, Wayland...

Visit drzhangortho.com

Key Findings

We analyzed Drzhangortho.com page load time and found that the first response time was 100 ms and then it took 631 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

drzhangortho.com performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value2.7 s

97/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value1.236

1/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

Network Requests Diagram

drzhangortho.com

100 ms

ga.js

9 ms

columnal.css

31 ms

main_ghz.css

52 ms

flexslider.css

32 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 96% of them (53 requests) were addressed to the original Drzhangortho.com, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (143 ms) belongs to the original domain Drzhangortho.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 187.9 kB (21%)

Content Size

887.0 kB

After Optimization

699.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Drzhangortho.com main page is 887.0 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. 35% of websites need less resources to load. Images take 660.0 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 9.7 kB

  • Original 14.5 kB
  • After minification 14.0 kB
  • After compression 4.8 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 9.7 kB or 67% of the original size.

Image Optimization

-5%

Potential reduce by 35.4 kB

  • Original 660.0 kB
  • After minification 624.6 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. Dr Zhang Ortho images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 110.8 kB

  • Original 173.0 kB
  • After minification 150.8 kB
  • After compression 62.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 110.8 kB or 64% of the original size.

CSS Optimization

-81%

Potential reduce by 32.1 kB

  • Original 39.4 kB
  • After minification 28.5 kB
  • After compression 7.3 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. Drzhangortho.com needs all CSS files to be minified and compressed as it can save up to 32.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (11%)

Requests Now

47

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dr Zhang Ortho. 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

drzhangortho.com

drzhangortho.com

100 ms

ga.js

ga.js

9 ms

columnal.css

columnal.css

31 ms

main_ghz.css

main_ghz.css

52 ms

flexslider.css

flexslider.css

32 ms

jquery-1.7.1.js

jquery-1.7.1.js

66 ms

modernizr.js

modernizr.js

53 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

42 ms

conditional.js

conditional.js

37 ms

jquery.flexslider.js

jquery.flexslider.js

62 ms

__utm.gif

__utm.gif

14 ms

con_req.html

con_req.html

63 ms

atwiNavBg.png

atwiNavBg.png

19 ms

slide1.jpg

slide1.jpg

44 ms

slide2.jpg

slide2.jpg

33 ms

slide3.jpg

slide3.jpg

41 ms

slide4.jpg

slide4.jpg

46 ms

slide5.jpg

slide5.jpg

44 ms

free_consultation.PNG

free_consultation.PNG

35 ms

down_arrow.jpg

down_arrow.jpg

57 ms

case_logo.png

case_logo.png

57 ms

facebook_like.png

facebook_like.png

63 ms

yelp.png

yelp.png

61 ms

angies_list.jpg

angies_list.jpg

67 ms

google.png

google.png

74 ms

google+.jpg

google+.jpg

78 ms

twitter.jpg

twitter.jpg

76 ms

yahoo.jpg

yahoo.jpg

76 ms

linkedin.png

linkedin.png

80 ms

memberlogo3web_col.jpg

memberlogo3web_col.jpg

90 ms

comments.png

comments.png

102 ms

zoom.jpg

zoom.jpg

100 ms

abo_logo_b.gif

abo_logo_b.gif

94 ms

ada.jpg

ada.jpg

94 ms

google_map.jpg

google_map.jpg

102 ms

google_map_sud.jpg

google_map_sud.jpg

104 ms

invisalign.jpg

invisalign.jpg

110 ms

drzhang.jpg

drzhang.jpg

110 ms

op1.jpg

op1.jpg

127 ms

op2.jpg

op2.jpg

118 ms

sop1.jpg

sop1.jpg

118 ms

op3.jpg

op3.jpg

123 ms

with_pat.jpg

with_pat.jpg

136 ms

sop2.jpg

sop2.jpg

127 ms

op4.jpg

op4.jpg

133 ms

op5.jpg

op5.jpg

136 ms

Vera-webfont.woff

Vera-webfont.woff

138 ms

BebasNeue-webfont.woff

BebasNeue-webfont.woff

143 ms

ColabThi-webfont.woff

ColabThi-webfont.woff

135 ms

with_pat2.jpg

with_pat2.jpg

123 ms

sop3.jpg

sop3.jpg

139 ms

bg_direction_nav.png

bg_direction_nav.png

121 ms

Vera-webfont.ttf

Vera-webfont.ttf

17 ms

BebasNeue-webfont.ttf

BebasNeue-webfont.ttf

32 ms

ColabThi-webfont.ttf

ColabThi-webfont.ttf

30 ms

Accessibility Review

drzhangortho.com accessibility score

68

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

Image elements do not have [alt] attributes

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

drzhangortho.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

SEO Factors

drzhangortho.com SEO score

72

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Drzhangortho.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 Drzhangortho.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

drzhangortho.com

Open Graph description is not detected on the main page of Dr Zhang Ortho. 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: