Tools & Wizards About Us
erlangga.co.id screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

erlangga.co.id

The Official Corporate Website of Penerbit Erlangga

Page Load Speed

10.2 sec in total

First Response

860 ms

Resources Loaded

8.7 sec

Page Rendered

671 ms

erlangga.co.id screenshot

About Website

Visit erlangga.co.id now to see the best up-to-date Erlangga content for Indonesia and also check out these interesting facts you probably never knew about erlangga.co.id

Buku pelajaran, buku panduan dan sumber informasi untuk siswa, guru, orang tua.

Visit erlangga.co.id

Key Findings

We analyzed Erlangga.co.id page load time and found that the first response time was 860 ms and then it took 9.4 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

erlangga.co.id performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value34.6 s

0/100

25%

SI (Speed Index)

Value18.6 s

0/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.1

90/100

15%

TTI (Time to Interactive)

Value15.8 s

6/100

10%

Network Requests Diagram

erlangga.co.id

860 ms

erlangga.co.id

1476 ms

js

61 ms

style.css

479 ms

modal.css

721 ms

Our browser made a total of 105 requests to load all elements on the main page. We found that 89% of them (93 requests) were addressed to the original Erlangga.co.id, 9% (9 requests) were made to Static.xx.fbcdn.net and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Erlangga.co.id.

Page Optimization Overview & Recommendations

Page size can be reduced by 747.5 kB (6%)

Content Size

11.7 MB

After Optimization

10.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Erlangga.co.id main page is 11.7 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. 55% of websites need less resources to load. Images take 11.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 48.9 kB

  • Original 58.8 kB
  • After minification 47.8 kB
  • After compression 9.8 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. This page needs HTML code to be minified as it can gain 11.0 kB, which is 19% 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 48.9 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 434.0 kB

  • Original 11.3 MB
  • After minification 10.9 MB

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. Erlangga images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 105.3 kB

  • Original 142.3 kB
  • After minification 131.8 kB
  • After compression 37.0 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 105.3 kB or 74% of the original size.

CSS Optimization

-85%

Potential reduce by 159.2 kB

  • Original 187.3 kB
  • After minification 139.5 kB
  • After compression 28.1 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. Erlangga.co.id needs all CSS files to be minified and compressed as it can save up to 159.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (42%)

Requests Now

101

After Optimization

59

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Erlangga. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

erlangga.co.id

erlangga.co.id

860 ms

erlangga.co.id

erlangga.co.id

1476 ms

js

js

61 ms

style.css

style.css

479 ms

modal.css

modal.css

721 ms

rounded.css

rounded.css

1471 ms

shadowbox.css

shadowbox.css

1488 ms

zt.moomenu.css

zt.moomenu.css

1505 ms

style.css

style.css

1523 ms

jcomments-v2.3.js

jcomments-v2.3.js

956 ms

ajax.js

ajax.js

718 ms

mootools.js

mootools.js

1212 ms

modal.js

modal.js

729 ms

index.php

index.php

2027 ms

slider.js

slider.js

1542 ms

ajax_1.3.js

ajax_1.3.js

1710 ms

style.css

style.css

1723 ms

comment_style.css

comment_style.css

1745 ms

zt.moomenu.js

zt.moomenu.js

1770 ms

system.css

system.css

1797 ms

general.css

general.css

1946 ms

katalog.css

katalog.css

1962 ms

system.css

system.css

765 ms

template.css

template.css

1426 ms

default.css

default.css

1986 ms

template.css

template.css

2515 ms

typo.css

typo.css

2052 ms

css3.php

css3.php

2181 ms

zt.script.js

zt.script.js

2199 ms

blue.css

blue.css

2231 ms

hubungi-kami.png

hubungi-kami.png

278 ms

likebox.php

likebox.php

127 ms

color_1.png

color_1.png

276 ms

color_2.png

color_2.png

259 ms

color_3.png

color_3.png

274 ms

banerdepan.png

banerdepan.png

263 ms

logo.png

logo.png

256 ms

mainmenu.png

mainmenu.png

273 ms

mainmenu.png

mainmenu.png

496 ms

mainmenu1.png

mainmenu1.png

504 ms

loader.gif

loader.gif

513 ms

prev.png

prev.png

515 ms

next.png

next.png

516 ms

play.png

play.png

526 ms

pause.png

pause.png

734 ms

emr-prod3.webp

emr-prod3.webp

981 ms

foto-esensi.jpg

foto-esensi.jpg

755 ms

moduletitle_2.jpg

moduletitle_2.jpg

761 ms

arrow.png

arrow.png

763 ms

moduletitle_bg.png

moduletitle_bg.png

780 ms

topbrand%202022.png

topbrand%202022.png

746 ms

webbanner%20info%20hoax.jpg

webbanner%20info%20hoax.jpg

2514 ms

Banner%20Website%20P5%20SMP2.jpg

Banner%20Website%20P5%20SMP2.jpg

1693 ms

banner%20web%20fokus%20plus%20smp%202024.jpg

banner%20web%20fokus%20plus%20smp%202024.jpg

1232 ms

banner%20web%20backdrop%20bupel%20buku%20soal%20tw1%20.jpg

banner%20web%20backdrop%20bupel%20buku%20soal%20tw1%20.jpg

2623 ms

banner%20sosmed%20tab.jpg

banner%20sosmed%20tab.jpg

1142 ms

elib-buku-ref.jpg

elib-buku-ref.jpg

1232 ms

Banner%20Produk%20Digital%20SD.jpg

Banner%20Produk%20Digital%20SD.jpg

1385 ms

Banner%20Produk%20Digital%20SMP.jpg

Banner%20Produk%20Digital%20SMP.jpg

1473 ms

Banner%20Produk%20Digital%20SMA.jpg

Banner%20Produk%20Digital%20SMA.jpg

1474 ms

Banner%20Produk%20Digital%20SMK.jpg

Banner%20Produk%20Digital%20SMK.jpg

1629 ms

Banner%20Website%20EFP%20[1280x437px].jpg

Banner%20Website%20EFP%20[1280x437px].jpg

2219 ms

Erklika-fix.png

Erklika-fix.png

1962 ms

Flyer%20MI%20Kurmer%202023-fix.png

Flyer%20MI%20Kurmer%202023-fix.png

2122 ms

PHINTAR-fix.png

PHINTAR-fix.png

1947 ms

Flyer%20MTs%20Kurmer%202023-fix.png

Flyer%20MTs%20Kurmer%202023-fix.png

2219 ms

Flyer%20AKM%20SD-aktif%20(1).png

Flyer%20AKM%20SD-aktif%20(1).png

2744 ms

web%20spm%20plus%20sd%202024.jpg

web%20spm%20plus%20sd%202024.jpg

2377 ms

ERL_Banner%20Web%20Anniv.jpg

ERL_Banner%20Web%20Anniv.jpg

2485 ms

home-background.jpg

home-background.jpg

2473 ms

Banner%20TAB%20RAK%20Website%20Erlangga.jpg

Banner%20TAB%20RAK%20Website%20Erlangga.jpg

2629 ms

logo-erlangga.jpg

logo-erlangga.jpg

2714 ms

efk-produk-2022.webp

efk-produk-2022.webp

2732 ms

logo-efk.jpg

logo-efk.jpg

2759 ms

logo-emir.jpg

logo-emir.jpg

2855 ms

logo-esensi.jpg

logo-esensi.jpg

2874 ms

elearn_288.webp

elearn_288.webp

2951 ms

logo-erlangga-online.jpg

logo-erlangga-online.jpg

2974 ms

banner%20sosmed%20tab%20sqr.jpg

banner%20sosmed%20tab%20sqr.jpg

2986 ms

youtube_33.png

youtube_33.png

3009 ms

facebook_33.png

facebook_33.png

3090 ms

twitter_33.png

twitter_33.png

3113 ms

logo_instagram_mini.png

logo_instagram_mini.png

3189 ms

halo-erl.png

halo-erl.png

3215 ms

logo-erlangga(1).png

logo-erlangga(1).png

3233 ms

UhMP6Aq-7Wx.css

UhMP6Aq-7Wx.css

17 ms

x6r42IOOUZz.js

x6r42IOOUZz.js

33 ms

xjg1QNQguf-.js

xjg1QNQguf-.js

22 ms

O9zq51FKpXz.js

O9zq51FKpXz.js

25 ms

qnn7MVQZYOT.js

qnn7MVQZYOT.js

23 ms

qwSlV7K_jlE.js

qwSlV7K_jlE.js

24 ms

zYzGplAqD4J.js

zYzGplAqD4J.js

24 ms

p55HfXW__mM.js

p55HfXW__mM.js

23 ms

438223763_831062045724491_2559795517181829216_n.jpg

438223763_831062045724491_2559795517181829216_n.jpg

31 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

5 ms

efk.png

efk.png

3044 ms

logo-emir-300x96.png

logo-emir-300x96.png

2588 ms

gaprint-new.png

gaprint-new.png

2217 ms

eol%20logo.png

eol%20logo.png

2201 ms

erlasss.png

erlasss.png

2232 ms

race.png

race.png

2099 ms

null

null

243 ms

erl72%20sqr.jpeg

erl72%20sqr.jpeg

246 ms

closebox.png

closebox.png

241 ms

spinner.gif

spinner.gif

259 ms

Accessibility Review

erlangga.co.id accessibility score

75

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

erlangga.co.id best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

erlangga.co.id SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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 Erlangga.co.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 Erlangga.co.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

erlangga.co.id

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