Report Summary

  • 56

    Performance

    Renders faster than
    73% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

blacklagoon.jp

ブラックラグーン-BLACK LAGOON- オフィシャルページ

Page Load Speed

7.7 sec in total

First Response

674 ms

Resources Loaded

6.6 sec

Page Rendered

455 ms

blacklagoon.jp screenshot

About Website

Welcome to blacklagoon.jp homepage info - get ready to check BLACK LAGOON best content for Russia right away, or after learning these important things about blacklagoon.jp

2001年サンデーGX4月号に読み切り掲載。1年後の2002年に正式な連載となり、アニメ化もされ、現在では原作がシリーズ累計850万部突破の大ヒットを記録。 2021年に20周年を迎えたブラックラグーン-BLACK LAGOON- オフィシャルサイト

Visit blacklagoon.jp

Key Findings

We analyzed Blacklagoon.jp page load time and found that the first response time was 674 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

blacklagoon.jp performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value220 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.076

95/100

15%

TTI (Time to Interactive)

Value7.7 s

45/100

10%

Network Requests Diagram

blacklagoon.jp

674 ms

www.blacklagoon.jp

683 ms

index.css

338 ms

lightbox.css

341 ms

base.js

352 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 93% of them (43 requests) were addressed to the original Blacklagoon.jp, 2% (1 request) were made to Google.com and 2% (1 request) were made to Widgets.twimg.com. The less responsive or slowest element that took the longest time to load (4.2 sec) belongs to the original domain Blacklagoon.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 84.5 kB (8%)

Content Size

1.0 MB

After Optimization

964.2 kB

In fact, the total size of Blacklagoon.jp main page is 1.0 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. 20% of websites need less resources to load. Images take 948.6 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 7.1 kB

  • Original 10.2 kB
  • After minification 10.2 kB
  • After compression 3.1 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 7.1 kB or 70% of the original size.

Image Optimization

-1%

Potential reduce by 13.1 kB

  • Original 948.6 kB
  • After minification 935.5 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. BLACK LAGOON images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 59.9 kB

  • Original 83.8 kB
  • After minification 70.7 kB
  • After compression 23.9 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 59.9 kB or 72% of the original size.

CSS Optimization

-71%

Potential reduce by 4.4 kB

  • Original 6.2 kB
  • After minification 4.5 kB
  • After compression 1.8 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. Blacklagoon.jp needs all CSS files to be minified and compressed as it can save up to 4.4 kB or 71% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (14%)

Requests Now

43

After Optimization

37

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BLACK LAGOON. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

blacklagoon.jp accessibility score

95

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.

Best Practices

blacklagoon.jp best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

blacklagoon.jp SEO score

92

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

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

    JA

  • Language Claimed

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Blacklagoon.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 Blacklagoon.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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