4.3 sec in total
178 ms
2.9 sec
1.3 sec
Welcome to spiedl.org homepage info - get ready to check Spiedl best content right away, or after learning these important things about spiedl.org
Search the leading research in optics and photonics applied research from SPIE journals, conference proceedings and presentations, and eBooks
Visit spiedl.orgWe analyzed Spiedl.org page load time and found that the first response time was 178 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
spiedl.org performance score
name
value
score
weighting
Value9.8 s
0/100
10%
Value10.4 s
0/100
25%
Value10.5 s
7/100
10%
Value1,830 ms
9/100
30%
Value0
100/100
15%
Value16.2 s
6/100
10%
178 ms
170 ms
274 ms
103 ms
169 ms
Our browser made a total of 91 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Spiedl.org, 13% (12 requests) were made to and 5% (5 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (753 ms) relates to the external source Spiedigitallibrary.org.
Page size can be reduced by 301.2 kB (34%)
874.4 kB
573.3 kB
In fact, the total size of Spiedl.org main page is 874.4 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. 70% of websites need less resources to load. Javascripts take 366.1 kB which makes up the majority of the site volume.
Potential reduce by 81.4 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 11.3 kB, which is 11% 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 81.4 kB or 80% of the original size.
Potential reduce by 12.6 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. Spiedl images are well optimized though.
Potential reduce by 186.7 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 186.7 kB or 51% of the original size.
Potential reduce by 20.5 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. Spiedl.org needs all CSS files to be minified and compressed as it can save up to 20.5 kB or 18% of the original size.
Number of requests can be reduced by 37 (54%)
69
32
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Spiedl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.
www.spiedigitallibrary.org
178 ms
checktoken
170 ms
www.spiedigitallibrary.org
274 ms
MathJax.js
103 ms
gpt.js
169 ms
gpt.js
168 ms
casa.js
168 ms
dlcss
117 ms
fonts.css
233 ms
jquery
168 ms
bootstrap
75 ms
js
163 ms
iMAWebCookie.js
235 ms
cookieconsent.min.css
166 ms
cookieconsent.min.js
229 ms
LoadVideoModal.js
160 ms
LoadMore.js
158 ms
_Incapsula_Resource
151 ms
MML_CHTML.js
123 ms
pubads_impl_2022092701.js
25 ms
ppub_config
134 ms
9A5EDA3022A57D98B.css
167 ms
gtm.js
199 ms
SPIE_Logo_Header.svg
156 ms
SPIE_DL_Logo_Header.svg
137 ms
CC_logo_header.svg
138 ms
o-o_top_logo.svg
145 ms
InformationQuestionMark.png
147 ms
Loading.gif
146 ms
SPIE_DL_Logo_Nav.svg
148 ms
Conference_Button_HP.png
206 ms
Search_HP_Icon_Clear.svg
149 ms
CircleAnchor.svg
205 ms
AL.svg
151 ms
DCS.svg
154 ms
EPE.svg
156 ms
AS.svg
159 ms
Atacama%20Large%20Aperture%20Submillimetre%20Telescope.png
206 ms
Uncertain_and_biased_facial_expression_recognition.png
210 ms
Peer-reviewer-course-336x235%20%282%29.jpg
163 ms
Lens.png
205 ms
Editage%20Annouce.jpg
206 ms
OpenAccessIcon.svg
287 ms
BackToTop.svg
256 ms
Facebook_Footer.svg
207 ms
Twitter_Footer.svg
210 ms
LinkedIn_Footer.svg
208 ms
SPIE_Logo_Footer.svg
211 ms
Float_Nav_SPIE_Logo.svg
250 ms
cross.png
457 ms
Rail_Carrot.svg
381 ms
integrator.js
199 ms
ads
284 ms
container.html
134 ms
qrWMTH5+9OlvLdZ7X3wBgchag
38 ms
qrWMTH5+9OlvLdZ7X3wBgchag
41 ms
uBXbKumYWkoiof6q1jEx+fvTpby3We198AYHIWoA==
42 ms
qrWMTH5+9OlvLdZ7X3wBgchag
41 ms
analytics.js
165 ms
boomerang.min.js
277 ms
eluminate.js
535 ms
Search_HP_Icon.svg
209 ms
Video_Play_Button.png
178 ms
j00NWhWp4Hef0dsZUUBw==
106 ms
qd+TGu6XJzLwK3qzzXKYeqc+L442CIxHdRkZdbYGaLU7ja73I7tkXbsoSEVVPlx0npf49NDVoVqeB3n9HbGVFAc=
106 ms
R2xlRQH
106 ms
qd+TGu6XJzLwK3qzzXKYeqc+L442CIxHdRkZdbYGaLU7ja73I7tkXbsoSEVVPlx0npf49NDVoVqeB3n9HbGVFAc=
105 ms
R2xlRQH
105 ms
R2xlRQH
105 ms
j00NWhWp4Hef0dsZUUBw==
104 ms
j00NWhWp4Hef0dsZUUBw==
105 ms
3627483768035326080
401 ms
abg_lite.js
400 ms
window_focus.js
719 ms
rx_lidar.js
134 ms
icon.png
387 ms
collect
609 ms
collect
619 ms
insight.min.js
631 ms
scholar_casa
607 ms
collect
264 ms
refresh
423 ms
integrations
385 ms
_Incapsula_Resource
340 ms
x429.xml
753 ms
collect
105 ms
script.js
18 ms
pixel.js
19 ms
cm
24 ms
collect
3 ms
24 ms
spiedl.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
spiedl.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
Page has valid source maps
spiedl.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 Spiedl.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 Spiedl.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.
spiedl.org
Open Graph description is not detected on the main page of Spiedl. 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: