2.2 sec in total
181 ms
1.8 sec
183 ms
Welcome to isstracker.com homepage info - get ready to check ISSTracker best content for United States right away, or after learning these important things about isstracker.com
Track the location of the International Space Station in real-time. See the plotted paths of past, present and future orbits all from a single page.
Visit isstracker.comWe analyzed Isstracker.com page load time and found that the first response time was 181 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
isstracker.com performance score
name
value
score
weighting
Value1.8 s
89/100
10%
Value5.4 s
21/100
25%
Value6.8 s
35/100
10%
Value530 ms
55/100
30%
Value0.003
100/100
15%
Value10.9 s
21/100
10%
181 ms
210 ms
87 ms
394 ms
143 ms
Our browser made a total of 108 requests to load all elements on the main page. We found that 18% of them (19 requests) were addressed to the original Isstracker.com, 10% (11 requests) were made to Vk.com and 10% (11 requests) were made to Maps.google.com. The less responsive or slowest element that took the longest time to load (538 ms) relates to the external source Vk.com.
Page size can be reduced by 712.9 kB (51%)
1.4 MB
671.9 kB
In fact, the total size of Isstracker.com main page is 1.4 MB. 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 958.0 kB which makes up the majority of the site volume.
Potential reduce by 32.7 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 32.7 kB or 82% of the original size.
Potential reduce by 24.5 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. ISSTracker images are well optimized though.
Potential reduce by 607.7 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 607.7 kB or 63% of the original size.
Potential reduce by 48.0 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. Isstracker.com needs all CSS files to be minified and compressed as it can save up to 48.0 kB or 81% of the original size.
Number of requests can be reduced by 54 (54%)
100
46
The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ISSTracker. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
isstracker.com
181 ms
www.isstracker.com
210 ms
style.css
87 ms
openapi.js
394 ms
hostedbadge.php
143 ms
plusone.js
144 ms
js
44 ms
jsapi
22 ms
daynightoverlay.min.js
172 ms
consolidated.js
171 ms
home.js
175 ms
show_ads.js
6 ms
analytics.js
23 ms
collect
12 ms
collect
67 ms
ga-audiences
32 ms
isstracker_logo.png
197 ms
arrowUp.png
130 ms
longitude_bar.png
131 ms
arrowLeft.png
129 ms
latitude_bar.png
191 ms
velocityMPH.png
191 ms
altitudeMiles.png
288 ms
units.png
288 ms
buttonPlusMinus.png
287 ms
icon_facebook.png
286 ms
icon_twitter.png
290 ms
widgets.js
47 ms
upload.gif
168 ms
cb=gapi.loaded_0
106 ms
cb=gapi.loaded_1
103 ms
fastbutton
156 ms
jquery.min.js
31 ms
like.php
231 ms
widget_like.php
282 ms
224 ms
ca-pub-3122451947455178.js
84 ms
zrt_lookup.html
179 ms
show_ads_impl.js
78 ms
common.js
136 ms
map.js
159 ms
overlay.js
167 ms
fetchTLE.php
276 ms
postmessageRelay
181 ms
cb=gapi.loaded_0
154 ms
cb=gapi.loaded_1
153 ms
ads
281 ms
osd.js
44 ms
badge_su.js
225 ms
badges_su.css
225 ms
vpc6VNjRPXV.js
410 ms
LVx-xkvaJ0b.png
450 ms
util.js
29 ms
onion.js
29 ms
api.js
61 ms
core:rpc:shindig.random:shindig.sha1.js
194 ms
2536007149-postmessagerelay.js
171 ms
loader_nav19127_3.js
164 ms
lite.css
164 ms
lite.js
538 ms
lang3_0.js
337 ms
widgets.css
336 ms
xdm.js
336 ms
al_like.js
343 ms
ViewportInfoService.GetViewportInfo
82 ms
stats.js
52 ms
transparent.png
139 ms
kh
140 ms
kh
170 ms
controls.js
37 ms
kh
142 ms
kh
211 ms
kh
211 ms
kh
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kh
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kh
127 ms
kh
129 ms
kh
139 ms
kh
129 ms
kh
139 ms
marker.js
104 ms
geometry.js
101 ms
poly.js
103 ms
css
158 ms
google4.png
50 ms
mapcnt6.png
118 ms
sv5.png
117 ms
google_white5.png
116 ms
14257632326618411257
114 ms
abg.js
133 ms
m_js_controller.js
144 ms
googlelogo_color_112x36dp.png
168 ms
badgeRound65x18.png
126 ms
undo_poly.png
68 ms
kh
80 ms
kh
70 ms
kh
64 ms
kh
71 ms
ISSIcon.png
171 ms
s
42 ms
x_button_blue2.png
42 ms
2UX7WLTfW3W8TclTUvlFyQ.woff
43 ms
RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff
43 ms
Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff
49 ms
d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff
50 ms
AuthenticationService.Authenticate
32 ms
E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js
5 ms
like_widget.png
133 ms
isstracker.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.
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
Form elements do not have associated labels
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
isstracker.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
isstracker.com SEO score
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Isstracker.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 Isstracker.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.
isstracker.com
Open Graph description is not detected on the main page of ISSTracker. 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: