821 ms in total
129 ms
433 ms
259 ms
Welcome to robertsonopt.com homepage info - get ready to check Robertson Opt best content right away, or after learning these important things about robertsonopt.com
Bi-Shop: All In One Multipurpose theme - the best theme we made.
Visit robertsonopt.comWe analyzed Robertsonopt.com page load time and found that the first response time was 129 ms and then it took 692 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.
robertsonopt.com performance score
name
value
score
weighting
Value5.0 s
9/100
10%
Value8.6 s
1/100
25%
Value10.4 s
8/100
10%
Value2,680 ms
4/100
30%
Value0.405
24/100
15%
Value15.7 s
6/100
10%
129 ms
27 ms
65 ms
38 ms
40 ms
Our browser made a total of 54 requests to load all elements on the main page. We found that 96% of them (52 requests) were addressed to the original Robertsonopt.com, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (160 ms) belongs to the original domain Robertsonopt.com.
Page size can be reduced by 219.0 kB (28%)
775.6 kB
556.6 kB
In fact, the total size of Robertsonopt.com main page is 775.6 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. 30% of websites need less resources to load. Images take 473.5 kB which makes up the majority of the site volume.
Potential reduce by 9.6 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 4.5 kB, which is 35% 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 9.6 kB or 75% of the original size.
Potential reduce by 21.0 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. Robertson Opt images are well optimized though.
Potential reduce by 182.8 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 182.8 kB or 65% of the original size.
Potential reduce by 5.6 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. Robertsonopt.com needs all CSS files to be minified and compressed as it can save up to 5.6 kB or 76% of the original size.
Number of requests can be reduced by 17 (32%)
53
36
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Robertson Opt. 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.
robertsonopt.com
129 ms
style.css
27 ms
jquery-1.3.1.min.js
65 ms
common.js
38 ms
common.slide.js
40 ms
jquery-1.4.2.min.js
74 ms
jwplayer.js
98 ms
ga.js
36 ms
bodyBg.jpg
35 ms
main-bg.gif
36 ms
facebook_16.png
38 ms
logo.png
39 ms
s1.jpg
36 ms
s5.jpg
38 ms
s6.jpg
42 ms
s4.jpg
41 ms
s7.jpg
41 ms
s8.jpg
43 ms
s11.jpg
44 ms
s12.jpg
49 ms
s13.png
49 ms
s14.png
50 ms
s15.png
51 ms
s16.png
51 ms
s17.png
51 ms
s18.png
64 ms
s19.png
66 ms
s20.png
66 ms
s21.png
68 ms
s22.png
66 ms
s23.png
68 ms
s24.png
80 ms
s25.png
81 ms
s26.png
83 ms
s27.png
83 ms
s28.png
83 ms
s29.png
84 ms
s30.png
97 ms
menuBg.png
98 ms
menuDiv.gif
98 ms
banner.jpg
146 ms
contentBg.gif
99 ms
bullet.gif
100 ms
RobertsonOptical_AdultColoringContest-thumb.png
160 ms
__utm.gif
18 ms
testmonil-top.gif
86 ms
testmonil-buttom.gif
84 ms
division.gif
85 ms
monthlyfeature_300w.jpg
85 ms
contentCurve.png
97 ms
footerLogo.png
98 ms
robertson_footer_logo.png
97 ms
footer.jpg
97 ms
homeBg.png
109 ms
robertsonopt.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
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
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
robertsonopt.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
robertsonopt.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Robertsonopt.com 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 Robertsonopt.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
robertsonopt.com
Open Graph description is not detected on the main page of Robertson Opt. 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: