2.4 sec in total
156 ms
2 sec
314 ms
Visit optics.org now to see the best up-to-date Optics content for United States and also check out these interesting facts you probably never knew about optics.org
optics, photonics, laser and imaging news coverage including clean technologies, defense/aerospace, life science/medicine and laser materials processing applications
Visit optics.orgWe analyzed Optics.org page load time and found that the first response time was 156 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
optics.org performance score
name
value
score
weighting
Value2.4 s
71/100
10%
Value6.3 s
10/100
25%
Value8.4 s
18/100
10%
Value440 ms
63/100
30%
Value0.569
12/100
15%
Value7.4 s
49/100
10%
156 ms
462 ms
224 ms
76 ms
59 ms
Our browser made a total of 67 requests to load all elements on the main page. We found that 88% of them (59 requests) were addressed to the original Optics.org, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Optics.org.
Page size can be reduced by 128.1 kB (14%)
890.6 kB
762.4 kB
In fact, the total size of Optics.org main page is 890.6 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. 50% of websites need less resources to load. Images take 756.5 kB which makes up the majority of the site volume.
Potential reduce by 34.1 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 34.1 kB or 76% of the original size.
Potential reduce by 35.6 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. Optics images are well optimized though.
Potential reduce by 32.0 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 32.0 kB or 55% of the original size.
Potential reduce by 26.4 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. Optics.org needs all CSS files to be minified and compressed as it can save up to 26.4 kB or 85% of the original size.
Number of requests can be reduced by 5 (8%)
62
57
The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optics. 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.
optics.org
156 ms
optics.org
462 ms
optics.css
224 ms
iMAWebCookie.js
76 ms
analytics.js
59 ms
gtm.js
102 ms
insight.min.js
64 ms
boomerang.min.js
81 ms
spielogo.png
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245 ms
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382 ms
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469 ms
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316 ms
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banner.gif
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1102 ms
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15 ms
insight_tag_errors.gif
202 ms
banner.jpg
785 ms
js
40 ms
banner.jpg
717 ms
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645 ms
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698 ms
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540 ms
optics.org 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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
<input type="image"> elements do not have [alt] text
Form elements do not have associated labels
Links do not have a discernible name
optics.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
optics.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Optics.org 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 Optics.org 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.
optics.org
Open Graph description is not detected on the main page of Optics. 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: