Tools & Wizards About Us
freelab.jp screenshot

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 46

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

freelab.jp

FreeLab（フリーラボ）　トップメニュー

Page Load Speed

8.3 sec in total

First Response

575 ms

Resources Loaded

7.6 sec

Page Rendered

135 ms

freelab.jp screenshot

About Website

Click here to check amazing Free Lab content for Japan. Otherwise, check out these important facts you probably never knew about freelab.jp

電子キットを作ろう。初心者に対応した電子キット製作案内や電子部品の役割を解説、電子キット・部品の販売など

Visit freelab.jp

Key Findings

We analyzed Freelab.jp page load time and found that the first response time was 575 ms and then it took 7.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

freelab.jp performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

17/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value220 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value3.9 s

88/100

10%

Network Requests Diagram

freelab.jp

575 ms

flstyle.css

185 ms

accnt.php

1290 ms

cm

332 ms

button.gif

601 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 50% of them (17 requests) were addressed to the original Freelab.jp, 9% (3 requests) were made to Users091.lolipop.jp and 6% (2 requests) were made to Ase.43n.net. The less responsive or slowest element that took the longest time to load (5.5 sec) relates to the external source Ase.43n.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 27.7 kB (26%)

Content Size

106.0 kB

After Optimization

78.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Freelab.jp main page is 106.0 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 74.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 16.3 kB

  • Original 21.1 kB
  • After minification 17.8 kB
  • After compression 4.8 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 3.3 kB, which is 16% 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 16.3 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 2.2 kB

  • Original 74.0 kB
  • After minification 71.9 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. Free Lab images are well optimized though.

CSS Optimization

-85%

Potential reduce by 9.2 kB

  • Original 10.8 kB
  • After minification 8.8 kB
  • After compression 1.6 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. Freelab.jp needs all CSS files to be minified and compressed as it can save up to 9.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (25%)

Requests Now

32

After Optimization

24

  • AJAX
  • Images
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Free Lab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

freelab.jp

freelab.jp

575 ms

flstyle.css

flstyle.css

185 ms

accnt.php

accnt.php

1290 ms

cm

cm

332 ms

button.gif

button.gif

601 ms

bgt

bgt

552 ms

0.gif

0.gif

304 ms

bgt

bgt

1051 ms

0.gif

0.gif

555 ms

ase_logo.gif

ase_logo.gif

5466 ms

logo.gif

logo.gif

2997 ms

logo.gif

logo.gif

1300 ms

yahoojp_sm.gif

yahoojp_sm.gif

745 ms

freelab_logo-mvo.gif

freelab_logo-mvo.gif

652 ms

line_wood_saml.jpg

line_wood_saml.jpg

335 ms

line_wood_sam.gif

line_wood_sam.gif

353 ms

ledmoveRo.gif

ledmoveRo.gif

688 ms

ledmoveLo.gif

ledmoveLo.gif

703 ms

menu_dot-r.gif

menu_dot-r.gif

363 ms

menu_dot-m.gif

menu_dot-m.gif

497 ms

densibuhin_thumb_1.jpg

densibuhin_thumb_1.jpg

524 ms

2line_gray.jpg

2line_gray.jpg

544 ms

fl_office1s.jpg

fl_office1s.jpg

678 ms

tasetu0502.jpg

tasetu0502.jpg

864 ms

Logo_google_s.gif

Logo_google_s.gif

726 ms

logo_amazonm.gif

logo_amazonm.gif

811 ms

copyright745mv.gif

copyright745mv.gif

1201 ms

accnt.php

accnt.php

1410 ms

accnt.php

accnt.php

1578 ms

line_wood_bak.jpg

line_wood_bak.jpg

670 ms

51m4NTy3uWL._SL100_.jpg

51m4NTy3uWL._SL100_.jpg

29 ms

199 ms

buy-from-tan.gif

buy-from-tan.gif

24 ms

ase_logo.gif

ase_logo.gif

1532 ms

Accessibility Review

freelab.jp accessibility score

46

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

<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

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

Best Practices

freelab.jp best practices score

67

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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

freelab.jp SEO score

67

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

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 Freelab.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 Freelab.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

freelab.jp

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