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cablecarmuseum.org screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

cablecarmuseum.org

San Francisco Cable Car Museum

Page Load Speed

177 ms in total

First Response

24 ms

Resources Loaded

153 ms

Page Rendered

0 ms

cablecarmuseum.org screenshot

About Website

Click here to check amazing Cable Car Museum content for United States. Otherwise, check out these important facts you probably never knew about cablecarmuseum.org

Presenting cable car history, technology, information, and gift shop. Located in San Francisco's Washington-Mason powerhouse and carbarn, the museum provides a historical perspective and insight into ...

Visit cablecarmuseum.org

Key Findings

We analyzed Cablecarmuseum.org page load time and found that the first response time was 24 ms and then it took 153 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

cablecarmuseum.org performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

52/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.531

14/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

Network Requests Diagram

cablecarmuseum.org

24 ms

ccm.css

3 ms

ccmhome.js

8 ms

ccmhome_2.js

7 ms

widgets.js

103 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 97% of them (38 requests) were addressed to the original Cablecarmuseum.org, 3% (1 request) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (103 ms) relates to the external source Platform.twitter.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.2 kB (4%)

Content Size

425.9 kB

After Optimization

410.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cablecarmuseum.org main page is 425.9 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. 35% of websites need less resources to load. Images take 407.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 12.6 kB

  • Original 15.5 kB
  • After minification 14.7 kB
  • After compression 3.0 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 12.6 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 1.9 kB

  • Original 407.2 kB
  • After minification 405.3 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. Cable Car Museum images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 431 B

  • Original 1.5 kB
  • After minification 1.5 kB
  • After compression 1.1 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 431 B or 28% of the original size.

CSS Optimization

-16%

Potential reduce by 248 B

  • Original 1.6 kB
  • After minification 1.6 kB
  • After compression 1.3 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. Cablecarmuseum.org needs all CSS files to be minified and compressed as it can save up to 248 B or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (28%)

Requests Now

36

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cable Car Museum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

cablecarmuseum.org

cablecarmuseum.org

24 ms

ccm.css

ccm.css

3 ms

ccmhome.js

ccmhome.js

8 ms

ccmhome_2.js

ccmhome_2.js

7 ms

widgets.js

widgets.js

103 ms

021.jpeg

021.jpeg

9 ms

022.jpeg

022.jpeg

10 ms

023.jpeg

023.jpeg

11 ms

024.jpeg

024.jpeg

10 ms

025.jpeg

025.jpeg

21 ms

026.jpeg

026.jpeg

13 ms

027.jpeg

027.jpeg

13 ms

028.jpeg

028.jpeg

11 ms

029.jpeg

029.jpeg

20 ms

spacer.gif

spacer.gif

19 ms

header.jpg

header.jpg

22 ms

cable-tile.gif

cable-tile.gif

22 ms

home.gif

home.gif

22 ms

navspace.gif

navspace.gif

24 ms

heritage.gif

heritage.gif

24 ms

museum.gif

museum.gif

24 ms

store.gif

store.gif

25 ms

info.gif

info.gif

25 ms

moldtl.jpg

moldtl.jpg

26 ms

moldt.jpg

moldt.jpg

27 ms

moldtr.jpg

moldtr.jpg

25 ms

moldl.jpg

moldl.jpg

27 ms

heritage.jpg

heritage.jpg

29 ms

museum.jpg

museum.jpg

27 ms

info.jpg

info.jpg

29 ms

00.jpeg

00.jpeg

28 ms

MasonLineRepairs180922.jpg

MasonLineRepairs180922.jpg

35 ms

watermusiccoverT.jpg

watermusiccoverT.jpg

31 ms

Muni100-coverT.jpg

Muni100-coverT.jpg

30 ms

LuWatters_BobHelms.jpg

LuWatters_BobHelms.jpg

34 ms

moldr.jpg

moldr.jpg

29 ms

moldbl.jpg

moldbl.jpg

29 ms

moldb.jpg

moldb.jpg

31 ms

moldbr.jpg

moldbr.jpg

33 ms

Accessibility Review

cablecarmuseum.org accessibility score

60

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.

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 [lang] attribute

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

cablecarmuseum.org best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

cablecarmuseum.org SEO score

62

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cablecarmuseum.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Cablecarmuseum.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

cablecarmuseum.org

Open Graph description is not detected on the main page of Cable Car 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: