2.9 sec in total
1 sec
1.7 sec
218 ms
Click here to check amazing Osc content for Sri Lanka. Otherwise, check out these important facts you probably never knew about osc.lk
Home - The Overseas School of Colombo has been Sri Lanka's premier and one of the best international schools in Colombo since 1957! OSC is the only IB school in Sri Lanka.
Visit osc.lkWe analyzed Osc.lk page load time and found that the first response time was 1 sec and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
osc.lk performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value5.3 s
22/100
25%
Value12.1 s
4/100
10%
Value1,510 ms
14/100
30%
Value0.127
82/100
15%
Value19.3 s
2/100
10%
1040 ms
41 ms
41 ms
42 ms
43 ms
Our browser made a total of 82 requests to load all elements on the main page. We found that 96% of them (79 requests) were addressed to the original Osc.lk, 2% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Osc.lk.
Page size can be reduced by 346.0 kB (15%)
2.3 MB
1.9 MB
In fact, the total size of Osc.lk main page is 2.3 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. 45% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.
Potential reduce by 60.2 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. 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 60.2 kB or 86% of the original size.
Potential reduce by 41.8 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. Osc images are well optimized though.
Potential reduce by 139.4 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 139.4 kB or 64% of the original size.
Potential reduce by 104.6 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. Osc.lk needs all CSS files to be minified and compressed as it can save up to 104.6 kB or 85% of the original size.
Number of requests can be reduced by 40 (49%)
81
41
The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Osc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
osc.lk
1040 ms
colorbox3.min.css
41 ms
modstyle.css
41 ms
djimageslider.css
42 ms
djmenu.css
43 ms
animate.min.css
81 ms
animations.css
52 ms
djmenu_fx.css
59 ms
jquery.min.js
118 ms
jquery-noconflict.js
59 ms
jquery-migrate.min.js
60 ms
caption.js
70 ms
jquery.colorbox-min.js
76 ms
script.min.js
77 ms
jquery.easing.min.js
79 ms
slider.js
89 ms
jquery.djmenu.js
94 ms
html5fallback.js
97 ms
system.css
96 ms
general.css
97 ms
template_css.css
146 ms
responsive.css
142 ms
responsivemenustyle.css
144 ms
slicknav.css
145 ms
perfect-scrollbar.css
144 ms
modernizr.min.js
7 ms
jquery.slicknav.js
124 ms
perfect-scrollbar.js
126 ms
main.js
124 ms
system.css
23 ms
ga.js
161 ms
topBg.jpg
45 ms
searchBg.png
44 ms
searchBg.jpg
45 ms
searchButton.gif
47 ms
headerBg.png
70 ms
headerLogo.png
71 ms
mobile-logo.png
47 ms
menuBg.jpg
48 ms
menuLeft.jpg
48 ms
menuRight.jpg
50 ms
loader.gif
68 ms
3.jpg
126 ms
5.jpg
109 ms
2.jpg
132 ms
4.jpg
156 ms
6.jpg
113 ms
7.jpg
121 ms
8.jpg
145 ms
9.jpg
189 ms
10.jpg
193 ms
11.jpg
195 ms
12.jpg
201 ms
13.jpg
201 ms
14.jpg
204 ms
15.jpg
248 ms
transparent_bg.png
212 ms
dotted.gif
212 ms
newsBg.jpg
220 ms
latestNewsImg.jpg
222 ms
hotlinksLi.jpg
223 ms
btnReadmore.jpg
230 ms
latestNewsBannerNew.jpg
231 ms
facebooklogo.jpg
238 ms
logoIB.jpg
241 ms
logoCIS.jpg
243 ms
logoMSANew.jpg
248 ms
__utm.gif
34 ms
logoNEYA.jpg
217 ms
logoSAISA.jpg
223 ms
a-working-at-osc.jpg
226 ms
a-parents-say.jpg
228 ms
a-take-a-tour.jpg
227 ms
uni-acceptance.png
230 ms
calendarBg.jpg
230 ms
evback.jpg
222 ms
btnschoolcalendar2017.png
222 ms
btnWhether.jpg
224 ms
footerBg.jpg
224 ms
logoFooter.png
188 ms
footerTitleSeperator.jpg
184 ms
copyrightBg.jpg
182 ms
osc.lk 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
osc.lk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
osc.lk 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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Osc.lk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Osc.lk 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.
osc.lk
Open Graph description is not detected on the main page of Osc. 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: