Tools & Wizards About Us
caster.fm screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

caster.fm

Caster.fm - Free Radio Stream Hosting - Start Your Own Internet Radio

Page Load Speed

1.1 sec in total

First Response

88 ms

Resources Loaded

896 ms

Page Rendered

112 ms

caster.fm screenshot

About Website

Welcome to caster.fm homepage info - get ready to check Caster best content for Serbia right away, or after learning these important things about caster.fm

Caster.fm provides a reliable top quality free and paid internet radio stream hosting.

Visit caster.fm

Key Findings

We analyzed Caster.fm page load time and found that the first response time was 88 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

caster.fm performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

18/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value540 ms

54/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value8.8 s

36/100

10%

Network Requests Diagram

caster.fm

88 ms

www.caster.fm

100 ms

bootstrap.css

192 ms

css

15 ms

fp_styles.css

187 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 5% of them (3 requests) were addressed to the original Caster.fm, 44% (28 requests) were made to Cdn.caster.fm and 11% (7 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (213 ms) relates to the external source Facebook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 195.5 kB (33%)

Content Size

588.6 kB

After Optimization

393.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Caster.fm main page is 588.6 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. 75% 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 273.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 40.9 kB

  • Original 52.0 kB
  • After minification 42.1 kB
  • After compression 11.2 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 10.0 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 40.9 kB or 79% of the original size.

Image Optimization

-10%

Potential reduce by 26.0 kB

  • Original 273.8 kB
  • After minification 247.7 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. Caster images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 117.0 kB

  • Original 214.1 kB
  • After minification 210.8 kB
  • After compression 97.1 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 117.0 kB or 55% of the original size.

CSS Optimization

-24%

Potential reduce by 11.6 kB

  • Original 48.7 kB
  • After minification 48.6 kB
  • After compression 37.1 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. Caster.fm needs all CSS files to be minified and compressed as it can save up to 11.6 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (41%)

Requests Now

54

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Caster. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

caster.fm

caster.fm

88 ms

www.caster.fm

www.caster.fm

100 ms

bootstrap.css

bootstrap.css

192 ms

css

css

15 ms

fp_styles.css

fp_styles.css

187 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

191 ms

fp_libs.js

fp_libs.js

191 ms

sequence.jquery-min.js

sequence.jquery-min.js

190 ms

all.js

all.js

83 ms

logo_red.png

logo_red.png

34 ms

glyphicons-halflings.png

glyphicons-halflings.png

34 ms

arrow_down_tiny_dark.png

arrow_down_tiny_dark.png

35 ms

main_nav_bgr_dark.png

main_nav_bgr_dark.png

36 ms

main_nav_bgr_sep_dark.png

main_nav_bgr_sep_dark.png

35 ms

header_bgr_diag.png

header_bgr_diag.png

36 ms

banner_box2white.png

banner_box2white.png

37 ms

banner_box.png

banner_box.png

37 ms

banner_play.png

banner_play.png

35 ms

banner_bg.jpg

banner_bg.jpg

37 ms

slider_arrows.png

slider_arrows.png

37 ms

grad_menu.png

grad_menu.png

38 ms

check.png

check.png

37 ms

userpage_light_tunein.jpg

userpage_light_tunein.jpg

39 ms

icon_plus.png

icon_plus.png

38 ms

userpage_light_podcasts.jpg

userpage_light_podcasts.jpg

39 ms

userpage_dark_sc.jpg

userpage_dark_sc.jpg

39 ms

dancefloor2.jpg

dancefloor2.jpg

40 ms

cpdashboard.jpg

cpdashboard.jpg

39 ms

cpsettings.jpg

cpsettings.jpg

40 ms

arrow.png

arrow.png

41 ms

heading_bgr.png

heading_bgr.png

40 ms

icon-powered.gif

icon-powered.gif

41 ms

cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf

cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf

40 ms

DXI1ORHCpsQm3Vp6mXoaTYnF5uFdDttMLvmWuJdhhgs.ttf

DXI1ORHCpsQm3Vp6mXoaTYnF5uFdDttMLvmWuJdhhgs.ttf

40 ms

MTP_ySUJH_bn48VBG8sNSonF5uFdDttMLvmWuJdhhgs.ttf

MTP_ySUJH_bn48VBG8sNSonF5uFdDttMLvmWuJdhhgs.ttf

40 ms

k3k702ZOKiLJc3WVjuplzInF5uFdDttMLvmWuJdhhgs.ttf

k3k702ZOKiLJc3WVjuplzInF5uFdDttMLvmWuJdhhgs.ttf

40 ms

EInbV5DfGHOiMmvb1Xr-honF5uFdDttMLvmWuJdhhgs.ttf

EInbV5DfGHOiMmvb1Xr-honF5uFdDttMLvmWuJdhhgs.ttf

41 ms

icomoon4.svg

icomoon4.svg

205 ms

magistralc-bold-webfont.svg

magistralc-bold-webfont.svg

199 ms

magistralc-webfont.svg

magistralc-webfont.svg

203 ms

default

default

84 ms

trustlogo.js

trustlogo.js

27 ms

likebox.php

likebox.php

195 ms

trustlogo.js

trustlogo.js

152 ms

213 ms

0sTQzbapM8j.js

0sTQzbapM8j.js

28 ms

0sTQzbapM8j.js

0sTQzbapM8j.js

34 ms

seal_bg.gif

seal_bg.gif

34 ms

comodo_secure_100x85_transp.png

comodo_secure_100x85_transp.png

33 ms

warranty_level.gif

warranty_level.gif

53 ms

7HtPbsreimQ.css

7HtPbsreimQ.css

52 ms

f9mGsFoKGRJ.js

f9mGsFoKGRJ.js

57 ms

JrFVMrRpAYB.js

JrFVMrRpAYB.js

84 ms

T-D_V7C7Ph6.js

T-D_V7C7Ph6.js

82 ms

ga.js

ga.js

28 ms

seal_bg.gif

seal_bg.gif

52 ms

like.php

like.php

154 ms

__utm.gif

__utm.gif

70 ms

warranty_level.gif

warranty_level.gif

68 ms

1471206_606195176095172_420055596_n.jpg

1471206_606195176095172_420055596_n.jpg

32 ms

wMkwmq5_RAN.png

wMkwmq5_RAN.png

8 ms

0sTQzbapM8j.js

0sTQzbapM8j.js

8 ms

4qFiRLLPSF7.js

4qFiRLLPSF7.js

7 ms

lH1ibRl5GKq.png

lH1ibRl5GKq.png

3 ms

Accessibility Review

caster.fm accessibility score

55

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.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

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

caster.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

SEO Factors

caster.fm SEO score

72

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

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

caster.fm

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