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Welcome to opticalengineering.spiedigitallibrary.org homepage info - get ready to check Optical Engineering Spiedigitallibrary best content for China right away, or after learning these important things about opticalengineering.spiedigitallibrary.org
<i>Optical Engineering</i> (OE) publishes peer-reviewed papers reporting on research, development, and applications of optics, photonics, and imaging science and engineering.
Visit opticalengineering.spiedigitallibrary.orgWe analyzed Opticalengineering.spiedigitallibrary.org page load time and found that the first response time was 16 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
opticalengineering.spiedigitallibrary.org performance score
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Value7.5 s
1/100
10%
Value8.7 s
1/100
25%
Value22.8 s
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Value460 ms
61/100
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Value0.01
100/100
15%
Value12.2 s
15/100
10%
16 ms
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22 ms
20 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 85% of them (35 requests) were addressed to the original Opticalengineering.spiedigitallibrary.org, 5% (2 requests) were made to Google-analytics.com and 5% (2 requests) were made to Datacoll.spie.org. The less responsive or slowest element that took the longest time to load (798 ms) belongs to the original domain Opticalengineering.spiedigitallibrary.org.
Page size can be reduced by 272.5 kB (55%)
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In fact, the total size of Opticalengineering.spiedigitallibrary.org main page is 495.8 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. Javascripts take 223.2 kB which makes up the majority of the site volume.
Potential reduce by 73.2 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 13.8 kB, which is 15% 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 73.2 kB or 81% of the original size.
Potential reduce by 10.7 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. Optical Engineering Spiedigitallibrary images are well optimized though.
Potential reduce by 137.4 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 137.4 kB or 62% of the original size.
Potential reduce by 51.2 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. Opticalengineering.spiedigitallibrary.org needs all CSS files to be minified and compressed as it can save up to 51.2 kB or 79% of the original size.
Number of requests can be reduced by 11 (46%)
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The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical Engineering Spiedigitallibrary. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.
opticalengineering.spiedigitallibrary.org
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opticalengineering.spiedigitallibrary.org accessibility score
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
ARIA IDs are not unique
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
opticalengineering.spiedigitallibrary.org 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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
opticalengineering.spiedigitallibrary.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opticalengineering.spiedigitallibrary.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 Opticalengineering.spiedigitallibrary.org 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.
opticalengineering.spiedigitallibrary.org
Open Graph description is not detected on the main page of Optical Engineering Spiedigitallibrary. 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: