Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    65% of websites

  • 83

    SEO

    Google-friendlier than
    54% of websites

Page Load Speed

4.7 sec in total

First Response

699 ms

Resources Loaded

3.9 sec

Page Rendered

122 ms

About Website

Click here to check amazing Oys Istanbul content for Turkey. Otherwise, check out these important facts you probably never knew about oys.istanbul.edu.tr

Visit oys.istanbul.edu.tr

Key Findings

We analyzed Oys.istanbul.edu.tr page load time and found that the first response time was 699 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

oys.istanbul.edu.tr performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

6/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.0 s

53/100

10%

Network Requests Diagram

oys.istanbul.edu.tr

699 ms

index.php

688 ms

yui_combo.php

220 ms

yui_combo.php

686 ms

all

827 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Oys.istanbul.edu.tr, 79% (27 requests) were made to Iuoys.istanbul.edu.tr and 6% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (827 ms) relates to the external source Iuoys.istanbul.edu.tr.

Page Optimization Overview & Recommendations

Page size can be reduced by 496.9 kB (65%)

Content Size

769.8 kB

After Optimization

272.8 kB

In fact, the total size of Oys.istanbul.edu.tr main page is 769.8 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. 45% of websites need less resources to load. Javascripts take 468.1 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 101.8 kB

  • Original 117.5 kB
  • After minification 111.2 kB
  • After compression 15.8 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 101.8 kB or 87% of the original size.

Image Optimization

-20%

Potential reduce by 21.5 kB

  • Original 107.2 kB
  • After minification 85.7 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. Obviously, Oys Istanbul needs image optimization as it can save up to 21.5 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 311.5 kB

  • Original 468.1 kB
  • After minification 448.3 kB
  • After compression 156.6 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 311.5 kB or 67% of the original size.

CSS Optimization

-81%

Potential reduce by 62.1 kB

  • Original 76.9 kB
  • After minification 65.9 kB
  • After compression 14.8 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. Oys.istanbul.edu.tr needs all CSS files to be minified and compressed as it can save up to 62.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (72%)

Requests Now

29

After Optimization

8

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oys Istanbul. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

oys.istanbul.edu.tr accessibility score

60

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

High

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

oys.istanbul.edu.tr best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

oys.istanbul.edu.tr SEO score

83

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    TR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oys.istanbul.edu.tr can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Turkish. Our system also found out that Oys.istanbul.edu.tr 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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Oys Istanbul. 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: