Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

gf.itb.ac.id

Program Studi Teknik Geofisika

Page Load Speed

12.5 sec in total

First Response

1.6 sec

Resources Loaded

10.4 sec

Page Rendered

492 ms

gf.itb.ac.id screenshot

About Website

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Key Findings

We analyzed Gf.itb.ac.id page load time and found that the first response time was 1.6 sec and then it took 10.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

gf.itb.ac.id performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value160 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.179

67/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

gf.itb.ac.id

1633 ms

style.css

1622 ms

js.css

552 ms

jquery.js

1413 ms

jquery-migrate.min.js

649 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 90% of them (19 requests) were addressed to the original Gf.itb.ac.id, 10% (2 requests) were made to Seacg.org. The less responsive or slowest element that took the longest time to load (7.4 sec) relates to the external source Seacg.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 297.4 kB (36%)

Content Size

819.0 kB

After Optimization

521.6 kB

In fact, the total size of Gf.itb.ac.id main page is 819.0 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. 15% of websites need less resources to load. Images take 515.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 30.1 kB

  • Original 38.5 kB
  • After minification 32.6 kB
  • After compression 8.3 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 5.9 kB, which is 15% 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 30.1 kB or 78% of the original size.

Image Optimization

-12%

Potential reduce by 63.3 kB

  • Original 515.6 kB
  • After minification 452.3 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, Gf Itb needs image optimization as it can save up to 63.3 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 71.7 kB

  • Original 110.1 kB
  • After minification 110.1 kB
  • After compression 38.4 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 71.7 kB or 65% of the original size.

CSS Optimization

-85%

Potential reduce by 132.2 kB

  • Original 154.8 kB
  • After minification 134.5 kB
  • After compression 22.6 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. Gf.itb.ac.id needs all CSS files to be minified and compressed as it can save up to 132.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (45%)

Requests Now

20

After Optimization

11

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gf Itb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

gf.itb.ac.id accessibility score

94

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.

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

Links do not have a discernible name

Best Practices

gf.itb.ac.id best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

gf.itb.ac.id SEO score

84

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

Links do not have descriptive text

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ID

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gf.itb.ac.id can be misinterpreted by Google and other search engines. Our service has detected that is used on the page, and it does not match the claimed English language. Our system also found out that Gf.itb.ac.id 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 Gf Itb. 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: