Tools & Wizards About Us
block.fm screenshot

Report Summary

  • 4

    Performance

    Renders faster than
    20% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 39% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

block.fm

block.fm

Page Load Speed

8.1 sec in total

First Response

670 ms

Resources Loaded

6.8 sec

Page Rendered

581 ms

block.fm screenshot

About Website

Visit block.fm now to see the best up-to-date Block content for Japan and also check out these interesting facts you probably never knew about block.fm

ダンスミュージック、ヒップホップ、R&B、ポップミュージックなど国内外の音楽情報を中心に、最新のユースカルチャーをラジオと記事で毎日配信。

Visit block.fm

Key Findings

We analyzed Block.fm page load time and found that the first response time was 670 ms and then it took 7.4 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

block.fm performance score

4

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value18.0 s

0/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value3,080 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.707

7/100

15%

TTI (Time to Interactive)

Value17.6 s

4/100

10%

Network Requests Diagram

block.fm

670 ms

common.css

519 ms

module.css

371 ms

header_app.css

366 ms

style.css

588 ms

Our browser made a total of 181 requests to load all elements on the main page. We found that 55% of them (100 requests) were addressed to the original Block.fm, 15% (27 requests) were made to Resource.blockfm.com and 6% (11 requests) were made to Api.block.fm. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Block.fm.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (25%)

Content Size

4.3 MB

After Optimization

3.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Block.fm main page is 4.3 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 40.1 kB

  • Original 51.5 kB
  • After minification 51.5 kB
  • After compression 11.4 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 40.1 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 148.8 kB

  • Original 3.1 MB
  • After minification 3.0 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. Block images are well optimized though.

JavaScript Optimization

-76%

Potential reduce by 704.8 kB

  • Original 924.5 kB
  • After minification 772.9 kB
  • After compression 219.7 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 704.8 kB or 76% of the original size.

CSS Optimization

-85%

Potential reduce by 182.4 kB

  • Original 213.8 kB
  • After minification 172.6 kB
  • After compression 31.4 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. Block.fm needs all CSS files to be minified and compressed as it can save up to 182.4 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 103 (60%)

Requests Now

171

After Optimization

68

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 171 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Block. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 48 to 1 for JavaScripts and from 31 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

block.fm

block.fm

670 ms

common.css

common.css

519 ms

module.css

module.css

371 ms

header_app.css

header_app.css

366 ms

style.css

style.css

588 ms

reset.css

reset.css

397 ms

footer.css

footer.css

399 ms

css

css

28 ms

sp_common.css

sp_common.css

548 ms

sp_module.css

sp_module.css

555 ms

sp_style.css

sp_style.css

591 ms

sp_footer.css

sp_footer.css

598 ms

sp_form.css

sp_form.css

687 ms

jquery.min.js

jquery.min.js

70 ms

environ.js

environ.js

728 ms

first_action.js

first_action.js

739 ms

plusone.js

plusone.js

78 ms

sdk.js

sdk.js

58 ms

iframe_api

iframe_api

77 ms

modernizr.custom.js

modernizr.custom.js

599 ms

jquery.nicescroll.custom.js

jquery.nicescroll.custom.js

996 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

603 ms

jquery.mousewheel.js

jquery.mousewheel.js

679 ms

kk.1.min.js

kk.1.min.js

728 ms

renew_experimental.js

renew_experimental.js

745 ms

jwplayer.js

jwplayer.js

1185 ms

md5.js

md5.js

800 ms

pageinfoloader.js

pageinfoloader.js

868 ms

header_app.js

header_app.js

1094 ms

timetable.js

timetable.js

930 ms

backnumber_playlist.js

backnumber_playlist.js

993 ms

sbm.js

sbm.js

1038 ms

common.js

common.js

1303 ms

feed_html.js

feed_html.js

1189 ms

common.css

common.css

1006 ms

image.css

image.css

1030 ms

link.css

link.css

1094 ms

list.css

list.css

1194 ms

mltext.css

mltext.css

1199 ms

sltext.css

sltext.css

1202 ms

table.css

table.css

1199 ms

subcategory.css

subcategory.css

1275 ms

sp_common.css

sp_common.css

1124 ms

sp_image.css

sp_image.css

1202 ms

sp_link.css

sp_link.css

1205 ms

sp_list.css

sp_list.css

1184 ms

sp_mltext.css

sp_mltext.css

1209 ms

sp_sltext.css

sp_sltext.css

1270 ms

sp_table.css

sp_table.css

1308 ms

sp_subcategory.css

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1323 ms

dc.js

dc.js

879 ms

sp_logo.png

sp_logo.png

1635 ms

icon_menu_off.png

icon_menu_off.png

1634 ms

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1636 ms

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1633 ms

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1702 ms

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1634 ms

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1700 ms

logo_f.png

logo_f.png

1702 ms

icon_burn.png

icon_burn.png

1700 ms

icon_pioneer_dj.png

icon_pioneer_dj.png

1702 ms

icon_wasabeat.png

icon_wasabeat.png

1700 ms

icon_mixlr.png

icon_mixlr.png

1966 ms

icon_iflyer.png

icon_iflyer.png

1986 ms

icon_mtv81.png

icon_mtv81.png

1965 ms

icon_moneytree.png

icon_moneytree.png

2197 ms

icon_acoustic-revive.jpg

icon_acoustic-revive.jpg

1984 ms

logo_xbs.png

logo_xbs.png

1985 ms

sp_footer_logo.png

sp_footer_logo.png

2003 ms

all.js

all.js

1630 ms

all.js

all.js

1806 ms

search_area.png

search_area.png

2020 ms

icon_start_playing_disabled.png

icon_start_playing_disabled.png

2155 ms

icon_volume.png

icon_volume.png

2153 ms

icon_menu.png

icon_menu.png

2154 ms

play_item_type.png

play_item_type.png

2162 ms

icon_arrow_l_off.png

icon_arrow_l_off.png

2195 ms

icon_arrow_r_off.png

icon_arrow_r_off.png

2347 ms

player_bg_cover.png

player_bg_cover.png

2350 ms

v0SdcGFAl2aezM9Vq_aFTQ.ttf

v0SdcGFAl2aezM9Vq_aFTQ.ttf

862 ms

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1608 ms

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1617 ms

4cKlrioa77J2iqTqBgkRWg.ttf

4cKlrioa77J2iqTqBgkRWg.ttf

1617 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

851 ms

www-widgetapi.js

www-widgetapi.js

1783 ms

widgets.js

widgets.js

949 ms

plusone.js

plusone.js

841 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

945 ms

fastbutton

fastbutton

980 ms

icon_start_playing_disabled.svgz

icon_start_playing_disabled.svgz

1493 ms

icon_volume.svgz

icon_volume.svgz

1473 ms

icon_menu.svgz

icon_menu.svgz

1506 ms

play_item_type.svgz

play_item_type.svgz

1523 ms

icon_arrow_l_off.svgz

icon_arrow_l_off.svgz

1645 ms

icon_arrow_r_off.svgz

icon_arrow_r_off.svgz

1687 ms

logo.svgz

logo.svgz

1683 ms

cat_on.png

cat_on.png

1682 ms

blockfm_banner_side.png

blockfm_banner_side.png

1868 ms

popup_player.svgz

popup_player.svgz

1720 ms

LqowQDslGv4DmUBAfWa2Vw.ttf

LqowQDslGv4DmUBAfWa2Vw.ttf

816 ms

2HG_tEPiQ4Z6795cGfdivKCWcynf_cDxXwCLxiixG1c.ttf

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816 ms

HkF_qI1x_noxlxhrhMQYEKCWcynf_cDxXwCLxiixG1c.ttf

HkF_qI1x_noxlxhrhMQYEKCWcynf_cDxXwCLxiixG1c.ttf

815 ms

VNUH7ZAcagYBWsAiBBCEY6CWcynf_cDxXwCLxiixG1c.ttf

VNUH7ZAcagYBWsAiBBCEY6CWcynf_cDxXwCLxiixG1c.ttf

925 ms

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255 ms

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196 ms

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202 ms

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200 ms

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198 ms

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210 ms

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205 ms

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204 ms

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211 ms

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211 ms

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210 ms

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227 ms

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228 ms

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229 ms

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230 ms

source_bfm.png

source_bfm.png

1058 ms

source_iflyer.png

source_iflyer.png

1117 ms

source_iloud.png

source_iloud.png

1120 ms

f56c6ee5975baf.jpg

f56c6ee5975baf.jpg

1503 ms

twitter_v2.html

twitter_v2.html

516 ms

timetableapi.php

timetableapi.php

1152 ms

nowonair_json.js

nowonair_json.js

489 ms

blockfm

blockfm

335 ms

blockfmapp_feedbanner.jpg

blockfmapp_feedbanner.jpg

1541 ms

f5654341946134.gif

f5654341946134.gif

1626 ms

blockfmapp_feedbanner2.jpg

blockfmapp_feedbanner2.jpg

1824 ms

icon_start_playing_rev.png

icon_start_playing_rev.png

1247 ms

__utm.gif

__utm.gif

68 ms

__utm.gif

__utm.gif

156 ms

like.php

like.php

219 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

156 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

154 ms

postmessageRelay

postmessageRelay

108 ms

button.831500944bc3eb7ea5276ccdc3f71d2e.js

button.831500944bc3eb7ea5276ccdc3f71d2e.js

143 ms

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94 ms

55 ms

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81 ms

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160 ms

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168 ms

api.js

api.js

43 ms

core:rpc:shindig.random:shindig.sha1.js

core:rpc:shindig.random:shindig.sha1.js

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63 ms

tweet_button.6a78875565a912489e9aef879c881358.ja.html

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42 ms

timelineapi.php

timelineapi.php

860 ms

twitter_timeline.css

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982 ms

jquery-ui-1.8.16.custom.css

jquery-ui-1.8.16.custom.css

1031 ms

jquery-ui-1.8.16.custom.min.js

jquery-ui-1.8.16.custom.min.js

1420 ms

modernizr.custom.js

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1176 ms

twitter-entities.js

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178 ms

twitter_v2.js

twitter_v2.js

517 ms

twitter_burn.js

twitter_burn.js

349 ms

special_event.js

special_event.js

353 ms

rollover.js

rollover.js

1216 ms

hooplayer.js

hooplayer.js

354 ms

jot

jot

103 ms

0229djchart360.jpg

0229djchart360.jpg

519 ms

211_Global-Ibiza-2013_360.jpg

211_Global-Ibiza-2013_360.jpg

440 ms

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491 ms

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488 ms

261_radioreboot_360.jpg

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502 ms

blockchart1200.jpg

blockchart1200.jpg

908 ms

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248 ms

sign-in-with-twitter-gray.png

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177 ms

icon_twitter.png

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191 ms

icon_tweet_btn.svgz

icon_tweet_btn.svgz

199 ms

icon_hoo_btn.svgz

icon_hoo_btn.svgz

189 ms

style.css

style.css

178 ms

jquery.browser.js

jquery.browser.js

175 ms

jwplayer.js

jwplayer.js

709 ms

hooplayer_main.js

hooplayer_main.js

172 ms

logo.png

logo.png

57 ms

Accessibility Review

block.fm accessibility score

73

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

Buttons do not have an accessible name

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

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 valid value for its [lang] attribute.

High

[lang] attributes do not have a valid value

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

block.fm 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

High

Missing source maps for large first-party JavaScript

SEO Factors

block.fm SEO score

90

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Block.fm can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Block.fm 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

block.fm

Open Graph data is detected on the main page of Block. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: