3.8 sec in total
934 ms
2.7 sec
173 ms
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Visit tryobjectivec.codeschool.comWe analyzed Tryobjectivec.codeschool.com page load time and found that the first response time was 934 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
tryobjectivec.codeschool.com performance score
name
value
score
weighting
Value3.3 s
40/100
10%
Value10.4 s
0/100
25%
Value8.5 s
17/100
10%
Value5,870 ms
0/100
30%
Value0.008
100/100
15%
Value29.4 s
0/100
10%
934 ms
375 ms
772 ms
62 ms
47 ms
Our browser made a total of 29 requests to load all elements on the main page. We found that 72% of them (21 requests) were addressed to the original Tryobjectivec.codeschool.com, 10% (3 requests) were made to Google-analytics.com and 7% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (934 ms) belongs to the original domain Tryobjectivec.codeschool.com.
Page size can be reduced by 986.8 kB (75%)
1.3 MB
333.1 kB
In fact, the total size of Tryobjectivec.codeschool.com main page is 1.3 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. 50% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 31.1 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 31.1 kB or 67% of the original size.
Potential reduce by 0 B
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. Tryobjectivec Codeschool images are well optimized though.
Potential reduce by 816.5 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 816.5 kB or 74% of the original size.
Potential reduce by 139.1 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. Tryobjectivec.codeschool.com needs all CSS files to be minified and compressed as it can save up to 139.1 kB or 91% of the original size.
Number of requests can be reduced by 4 (17%)
24
20
The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tryobjectivec Codeschool. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
tryobjectivec.codeschool.com
934 ms
application-1e7b08f5ee8260ce1c9c422261343aa7.css
375 ms
application-bb3fd954c8753528cc4f09b4a654cb43.js
772 ms
mixpanel-2.2.min.js
62 ms
ga.js
47 ms
logo-course-8f54fa0be6e698f78bc2766bab61032a.svg
117 ms
map-0bbea99d3acc0e63f88c90d129717488.svg
127 ms
map-e6c90612df4b8f36ccd4d8179a215e32.svg
479 ms
map-2635b3de98743c11364078f52b211130.svg
639 ms
map-436b26fd3927a68167484f33de1ca24b.svg
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map-f76c60f47a0d122fc409e07177d42e88.svg
556 ms
border-59dd06cca7cfb0ae256b28da8ead8b91.png
197 ms
badge-01-8b77c5f5ce1a0f7a32d665da2fc67762.png
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314 ms
badge-course-5b887d607b41dc44261db90cd13bcd7c.png
380 ms
addthis_widget.js
23 ms
bg-907cb4f88154381fdc828f4d8f3cad5a.svg
367 ms
ywft-processing-bold-d792bd3ff092f4c71dc2ca4eafb5d9cf.woff
430 ms
PTS55F-webfont-461d15d035b35f59577cb4ee0a49fc8b.woff
445 ms
slkscr-webfont-0a0fedf9caa846f13ae15f477c7e633b.woff
610 ms
cs-course-ede1a2c9a5de4a1a49d99d7ba66af531.woff
826 ms
73 ms
__utm.gif
57 ms
__utm.gif
80 ms
300lo.json
44 ms
sh.7c7179124ea24ac6ba46caac.html
33 ms
tryobjectivec.codeschool.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.
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
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
tryobjectivec.codeschool.com 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
Browser errors were logged to the console
Page has valid source maps
tryobjectivec.codeschool.com 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
Image elements do not have [alt] attributes
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
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tryobjectivec.codeschool.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 Tryobjectivec.codeschool.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.
tryobjectivec.codeschool.com
Open Graph description is not detected on the main page of Tryobjectivec Codeschool. 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: