Tools & Wizards About Us
webapp.castbox.fm screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 70

    SEO

    Google-friendlier than
    29% of websites

webapp.castbox.fm

Best free podcast app for Apple iOS and Android | Let words move you

Page Load Speed

3.4 sec in total

First Response

1 sec

Resources Loaded

2 sec

Page Rendered

307 ms

webapp.castbox.fm screenshot

About Website

Visit webapp.castbox.fm now to see the best up-to-date Web App Castbox content for Iran and also check out these interesting facts you probably never knew about webapp.castbox.fm

Millions of podcasts for all topics. Listen to the best free podcast on Android, Apple iOS, Amazon Alexa, Google Home, Carplay, Android Auto, PC. Create...

Visit webapp.castbox.fm

Key Findings

We analyzed Webapp.castbox.fm page load time and found that the first response time was 1 sec and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

webapp.castbox.fm performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value6.6 s

38/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.279

43/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

webapp.castbox.fm

1010 ms

m.app.main.4677e0b6.chunk.css

292 ms

m.app.index.3bbb1302.chunk.css

299 ms

castbox_logo-text.png

36 ms

c2c595e6e3c2a64e6ea18fb6c6da8860.jpg

32 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 51% of them (20 requests) were addressed to the original Webapp.castbox.fm, 28% (11 requests) were made to Is1-ssl.mzstatic.com and 10% (4 requests) were made to S3.castbox.fm. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Webapp.castbox.fm.

Page Optimization Overview & Recommendations

Page size can be reduced by 262.0 kB (15%)

Content Size

1.8 MB

After Optimization

1.5 MB

  • HTML
  • Images

In fact, the total size of Webapp.castbox.fm main page is 1.8 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. 50% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 217.8 kB

  • Original 269.6 kB
  • After minification 269.4 kB
  • After compression 51.8 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. 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 217.8 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 44.2 kB

  • Original 1.5 MB
  • After minification 1.5 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. Web App Castbox images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 11 (31%)

Requests Now

35

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Web App Castbox. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

webapp.castbox.fm

webapp.castbox.fm

1010 ms

m.app.main.4677e0b6.chunk.css

m.app.main.4677e0b6.chunk.css

292 ms

m.app.index.3bbb1302.chunk.css

m.app.index.3bbb1302.chunk.css

299 ms

castbox_logo-text.png

castbox_logo-text.png

36 ms

c2c595e6e3c2a64e6ea18fb6c6da8860.jpg

c2c595e6e3c2a64e6ea18fb6c6da8860.jpg

32 ms

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600x600bb.jpg

43 ms

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46 ms

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600x600bb.jpg

51 ms

index_bg_phone.862bc5ea.png

index_bg_phone.862bc5ea.png

738 ms

POP_Main.png

POP_Main.png

30 ms

600x600bb.jpg

600x600bb.jpg

46 ms

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600x600bb.jpg

46 ms

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44 ms

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49 ms

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49 ms

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47 ms

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48 ms

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50 ms

logo.c20be293.png

logo.c20be293.png

444 ms

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605a1c40698998c6ff2ba624ea.png

24 ms

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19fd024f1fa0d92ce80cd72cfe.png

25 ms

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b366f54de9b9511f8ff4d58c5e.png

26 ms

manifest.8773bd12.js

manifest.8773bd12.js

149 ms

page.vendor.eb1a71c8.js

page.vendor.eb1a71c8.js

449 ms

page.app.8a2ab961.js

page.app.8a2ab961.js

462 ms

page.vendors~audiobooks~audiobooks.genre~castbox.main~categories~ch~channellist~claim~claim.failed~claim.~b62a876c.d38429d8.js

page.vendors~audiobooks~audiobooks.genre~castbox.main~categories~ch~channellist~claim~claim.failed~claim.~b62a876c.d38429d8.js

445 ms

page.categories~channellist~claim~claim.failed~claim.link_claimed~claim.link_lost~claim.ok~global~login~m~430f1dc9.dd913ac4.js

page.categories~channellist~claim~claim.failed~claim.link_claimed~claim.link_lost~claim.ok~global~login~m~430f1dc9.dd913ac4.js

297 ms

page.m.app.main.1c170f89.js

page.m.app.main.1c170f89.js

320 ms

page.vendors~audiobooks~audiobooks.genre~categories~ch~channellist~claim~claim.failed~claim.link_claimed~~48565954.f3b736a9.js

page.vendors~audiobooks~audiobooks.genre~categories~ch~channellist~claim~claim.failed~claim.link_claimed~~48565954.f3b736a9.js

448 ms

page.vendors~audiobooks~ch~ep~global~home~login~m.about~m.app.index~m.contactus~m.cookie~m.download~m.hel~dc9febc7.da32b548.js

page.vendors~audiobooks~ch~ep~global~home~login~m.about~m.app.index~m.contactus~m.cookie~m.download~m.hel~dc9febc7.da32b548.js

470 ms

page.m.app.index.69484677.js

page.m.app.index.69484677.js

601 ms

app.js

app.js

597 ms

banner_bg.0f7ff6f4.jpg

banner_bg.0f7ff6f4.jpg

579 ms

indexbanner.c29a9df6.png

indexbanner.c29a9df6.png

589 ms

fbevents.js

fbevents.js

52 ms

loader.js

loader.js

19 ms

lato_light.5b761f2d.ttf

lato_light.5b761f2d.ttf

849 ms

lato_regular.7f690e50.ttf

lato_regular.7f690e50.ttf

856 ms

lato_bold.44dfe8cc.ttf

lato_bold.44dfe8cc.ttf

973 ms

Accessibility Review

webapp.castbox.fm accessibility score

78

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

Image elements do not have [alt] attributes

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

webapp.castbox.fm best practices score

83

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

High

Browser errors were logged to the console

SEO Factors

webapp.castbox.fm SEO score

70

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

High

Page is blocked from indexing

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 Webapp.castbox.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 Webapp.castbox.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

webapp.castbox.fm

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