Tools & Wizards About Us
dolemanblackheritagemuseum.org screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 68

    SEO

    Google-friendlier than
    28% of websites

dolemanblackheritagemuseum.org

Doleman Black Heritage Museum

Page Load Speed

1.2 sec in total

First Response

126 ms

Resources Loaded

722 ms

Page Rendered

346 ms

dolemanblackheritagemuseum.org screenshot

About Website

Welcome to dolemanblackheritagemuseum.org homepage info - get ready to check Doleman Black Heritage Museum best content right away, or after learning these important things about dolemanblackheritagemuseum.org

Visit dolemanblackheritagemuseum.org

Key Findings

We analyzed Dolemanblackheritagemuseum.org page load time and found that the first response time was 126 ms and then it took 1.1 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

dolemanblackheritagemuseum.org performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.708

7/100

15%

TTI (Time to Interactive)

Value7.8 s

45/100

10%

Network Requests Diagram

dolemanblackheritagemuseum.org

126 ms

bootstrap.min.css

146 ms

normalize.css

133 ms

blueimp-gallery.min.css

143 ms

dbhm-2023-style.css

152 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 72% of them (31 requests) were addressed to the original Dolemanblackheritagemuseum.org, 14% (6 requests) were made to D30bklmhxz7oef.cloudfront.net and 7% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (327 ms) belongs to the original domain Dolemanblackheritagemuseum.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 107.8 kB (8%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dolemanblackheritagemuseum.org main page is 1.3 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. 35% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 12.0 kB

  • Original 16.1 kB
  • After minification 14.6 kB
  • After compression 4.1 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 12.0 kB or 75% of the original size.

Image Optimization

-7%

Potential reduce by 89.9 kB

  • Original 1.2 MB
  • After minification 1.1 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. Doleman Black Heritage Museum images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 3.5 kB

  • Original 51.6 kB
  • After minification 51.6 kB
  • After compression 48.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-10%

Potential reduce by 2.4 kB

  • Original 24.7 kB
  • After minification 24.1 kB
  • After compression 22.3 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. Dolemanblackheritagemuseum.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (28%)

Requests Now

32

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doleman Black Heritage Museum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dolemanblackheritagemuseum.org

dolemanblackheritagemuseum.org

126 ms

bootstrap.min.css

bootstrap.min.css

146 ms

normalize.css

normalize.css

133 ms

blueimp-gallery.min.css

blueimp-gallery.min.css

143 ms

dbhm-2023-style.css

dbhm-2023-style.css

152 ms

css2

css2

52 ms

jquery.min.js

jquery.min.js

27 ms

jquery.validate.js

jquery.validate.js

168 ms

bootstrap.min.js

bootstrap.min.js

167 ms

otrx.js

otrx.js

19 ms

js

js

78 ms

jquery.bootstrap-dropdown-hover.min.js

jquery.bootstrap-dropdown-hover.min.js

167 ms

future-home.webp

future-home.webp

218 ms

the-collection-text.png

the-collection-text.png

90 ms

future-home-mobile.webp

future-home-mobile.webp

141 ms

slide-2.webp

slide-2.webp

140 ms

slide-2-mobile.webp

slide-2-mobile.webp

150 ms

slide-3.webp

slide-3.webp

178 ms

slide-3-mobile.webp

slide-3-mobile.webp

137 ms

header-bg-lg.png

header-bg-lg.png

302 ms

dbhm-logo-top.png

dbhm-logo-top.png

80 ms

cc-arrow.jpg

cc-arrow.jpg

91 ms

torn-edge-black.png

torn-edge-black.png

177 ms

torn-edge-yellow-top.png

torn-edge-yellow-top.png

327 ms

inside-museum-render.jpg

inside-museum-render.jpg

116 ms

torn-edge-yellow-bottom.png

torn-edge-yellow-bottom.png

100 ms

Juneteenth600.jpg

Juneteenth600.jpg

299 ms

right-sidebar-bg-5.png

right-sidebar-bg-5.png

238 ms

dbhm-button-sm.png

dbhm-button-sm.png

170 ms

artist-gallery-frame-2.jpg

artist-gallery-frame-2.jpg

217 ms

auntj-figure.jpg

auntj-figure.jpg

208 ms

torn-edge-red.png

torn-edge-red.png

280 ms

dbhm-logo-footer.jpg

dbhm-logo-footer.jpg

246 ms

fb-icon.png

fb-icon.png

252 ms

x-icon.png

x-icon.png

261 ms

inst-icon.png

inst-icon.png

267 ms

homepage-text-1.png

homepage-text-1.png

183 ms

placeholder.jpg

placeholder.jpg

87 ms

visit-hag-footer-logo.png

visit-hag-footer-logo.png

86 ms

font

font

69 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

268 ms

font

font

324 ms

font

font

84 ms

Accessibility Review

dolemanblackheritagemuseum.org accessibility score

72

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

High

Links do not have a discernible name

Best Practices

dolemanblackheritagemuseum.org best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

dolemanblackheritagemuseum.org SEO score

68

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

robots.txt is not valid

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 Dolemanblackheritagemuseum.org 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 Dolemanblackheritagemuseum.org 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

dolemanblackheritagemuseum.org

Open Graph description is not detected on the main page of Doleman Black Heritage Museum. 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: