Tools & Wizards About Us
divecenter.com screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

divecenter.com

DiveCenter.com is Southern California's Top Rated Scuba Diving HQ located in West Los Angeles, CA.

Page Load Speed

2.4 sec in total

First Response

102 ms

Resources Loaded

2 sec

Page Rendered

297 ms

divecenter.com screenshot

About Website

Visit divecenter.com now to see the best up-to-date Dive Center content for United States and also check out these interesting facts you probably never knew about divecenter.com

California's Top Rated PADI IDC Scuba School and Dive Equipment Center in Los Angeles California. Some call us the best scuba shop in California, see for yourself and visit our giant equipment sh...

Visit divecenter.com

Key Findings

We analyzed Divecenter.com page load time and found that the first response time was 102 ms and then it took 2.3 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

divecenter.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value26.3 s

0/100

25%

SI (Speed Index)

Value13.4 s

2/100

10%

TBT (Total Blocking Time)

Value3,850 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value24.5 s

0/100

10%

Network Requests Diagram

divecenter.com

102 ms

divecenter.com

459 ms

theme-4d1d3c90-97dd-013c-3bc0-7622d04b6fb0.css

66 ms

css

47 ms

loader.js

123 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 13% of them (6 requests) were addressed to the original Divecenter.com, 30% (14 requests) were made to Fonts.gstatic.com and 24% (11 requests) were made to Cdn11.bigcommerce.com. The less responsive or slowest element that took the longest time to load (535 ms) relates to the external source Core.service.elfsight.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 201.3 kB (8%)

Content Size

2.5 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Divecenter.com main page is 2.5 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. Only a small number of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 195.9 kB

  • Original 222.6 kB
  • After minification 175.9 kB
  • After compression 26.7 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 46.7 kB, which is 21% 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 195.9 kB or 88% of the original size.

Image Optimization

-0%

Potential reduce by 2.6 kB

  • Original 2.1 MB
  • After minification 2.1 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. Dive Center images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.8 kB

  • Original 191.4 kB
  • After minification 191.4 kB
  • After compression 188.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 59.9 kB
  • After minification 59.9 kB
  • After compression 59.9 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. Divecenter.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (48%)

Requests Now

27

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dive Center. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

divecenter.com

divecenter.com

102 ms

divecenter.com

divecenter.com

459 ms

theme-4d1d3c90-97dd-013c-3bc0-7622d04b6fb0.css

theme-4d1d3c90-97dd-013c-3bc0-7622d04b6fb0.css

66 ms

css

css

47 ms

loader.js

loader.js

123 ms

platform.js

platform.js

51 ms

wthvideo4.js

wthvideo4.js

159 ms

theme-bundle.main.js

theme-bundle.main.js

119 ms

csrf-protection-header-5eeddd5de78d98d146ef4fd71b2aedce4161903e.js

csrf-protection-header-5eeddd5de78d98d146ef4fd71b2aedce4161903e.js

56 ms

visitor_stencil.js

visitor_stencil.js

53 ms

platform.js

platform.js

54 ms

platform.js

platform.js

68 ms

fbevents.js

fbevents.js

45 ms

rW-jcFemyQ4

rW-jcFemyQ4

126 ms

new-eco-logo2023-web_1700265550__84855.original.png

new-eco-logo2023-web_1700265550__84855.original.png

44 ms

loading.svg

loading.svg

43 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

42 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

53 ms

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

64 ms

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

65 ms

wthvideo4.js

wthvideo4.js

434 ms

www-player.css

www-player.css

7 ms

www-embed-player.js

www-embed-player.js

87 ms

base.js

base.js

111 ms

icomoon.ttf

icomoon.ttf

269 ms

U9MD6c-2-nnJkHxyCjRcnMHcWVWV1cWRRX8MaOM.ttf

U9MD6c-2-nnJkHxyCjRcnMHcWVWV1cWRRX8MaOM.ttf

269 ms

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXf_S_MRiXw.ttf

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXf_S_MRiXw.ttf

270 ms

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXenSvMRiXw.ttf

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXenSvMRiXw.ttf

268 ms

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXfTTPMRiXw.ttf

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXfTTPMRiXw.ttf

305 ms

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXe3TfMRiXw.ttf

U9MM6c-2-nnJkHxyCjRcnMHcWVWV1cWRRXe3TfMRiXw.ttf

419 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

304 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

304 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoJYOmb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoJYOmb2Rm.ttf

304 ms

ZkUM7HQKzcKWL-DM3yo4WGnr3mDsumI-oijucI1qrYc.js

ZkUM7HQKzcKWL-DM3yo4WGnr3mDsumI-oijucI1qrYc.js

362 ms

embed.js

embed.js

206 ms

search-sprite-ic.png

search-sprite-ic.png

230 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

78 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

79 ms

vck.js

vck.js

189 ms

index.php

index.php

332 ms

535 ms

cookie-notification

cookie-notification

403 ms

theme-bundle.chunk.16.js

theme-bundle.chunk.16.js

279 ms

Create

Create

398 ms

icon-sprite.svg

icon-sprite.svg

285 ms

dive-course-seal-la-ca-padi-scuba-padi-scuba-center-los-angeles__40736.jpg

dive-course-seal-la-ca-padi-scuba-padi-scuba-center-los-angeles__40736.jpg

274 ms

Accessibility Review

divecenter.com accessibility score

80

Accessibility Issues

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-hidden="true"] elements contain focusable descendents

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

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.

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

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

divecenter.com best practices score

58

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

divecenter.com SEO score

84

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

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 Divecenter.com 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 Divecenter.com 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

divecenter.com

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