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sfmuseum.net screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

sfmuseum.net

Museum of the City of San Francisco

Page Load Speed

3.3 sec in total

First Response

405 ms

Resources Loaded

2.6 sec

Page Rendered

265 ms

sfmuseum.net screenshot

About Website

Welcome to sfmuseum.net homepage info - get ready to check Sf Museum best content for United States right away, or after learning these important things about sfmuseum.net

Home page of the Museum of the City of San Francisco, with exhibits about the 1906 earthquake, California Gold Rush, internment of the Japanese during World War II

Visit sfmuseum.net

Key Findings

We analyzed Sfmuseum.net page load time and found that the first response time was 405 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

sfmuseum.net performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

76/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

68/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value900 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.166

71/100

15%

TTI (Time to Interactive)

Value14.1 s

10/100

10%

Network Requests Diagram

sfmuseum.net

405 ms

styles_nn.css

147 ms

navigation.js

215 ms

dc_jumpmenu.js

149 ms

adImprScripting.asp

426 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 80% of them (16 requests) were addressed to the original Sfmuseum.net, 10% (2 requests) were made to Sfmuseum.com and 5% (1 request) were made to Widget.fotomoto.com. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source Widget.fotomoto.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.7 kB (9%)

Content Size

370.8 kB

After Optimization

337.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sfmuseum.net main page is 370.8 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. Only 5% of websites need less resources to load. Images take 337.7 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 23.8 kB

  • Original 29.1 kB
  • After minification 17.2 kB
  • After compression 5.3 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 11.9 kB, which is 41% 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 23.8 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 7.2 kB

  • Original 337.7 kB
  • After minification 330.5 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. Sf Museum images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 2.3 kB

  • Original 3.3 kB
  • After minification 2.6 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 2.3 kB or 68% of the original size.

CSS Optimization

-65%

Potential reduce by 440 B

  • Original 674 B
  • After minification 536 B
  • After compression 234 B

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. Sfmuseum.net needs all CSS files to be minified and compressed as it can save up to 440 B or 65% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

19

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sf Museum. According to our analytics all requests are already optimized.

Network Requests Diagram

sfmuseum.net

sfmuseum.net

405 ms

styles_nn.css

styles_nn.css

147 ms

navigation.js

navigation.js

215 ms

dc_jumpmenu.js

dc_jumpmenu.js

149 ms

adImprScripting.asp

adImprScripting.asp

426 ms

20409a11f8ac7bce6171dfe42f0536f41cd53792.js

20409a11f8ac7bce6171dfe42f0536f41cd53792.js

2239 ms

donatebutton02.gif

donatebutton02.gif

392 ms

space.gif

space.gif

72 ms

bg-top.jpg

bg-top.jpg

72 ms

new-imagearchive.jpg

new-imagearchive.jpg

138 ms

btn-gold.jpg

btn-gold.jpg

164 ms

btn-fire.jpg

btn-fire.jpg

141 ms

btn-gg.jpg

btn-gg.jpg

298 ms

btn-about.jpg

btn-about.jpg

141 ms

btn-shop.jpg

btn-shop.jpg

140 ms

disk.jpg

disk.jpg

692 ms

freeman1.jpg

freeman1.jpg

1450 ms

bg-butt.jpg

bg-butt.jpg

73 ms

bg-footshadow.gif

bg-footshadow.gif

81 ms

writeImg.asp

writeImg.asp

236 ms

Accessibility Review

sfmuseum.net accessibility score

78

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

sfmuseum.net best practices score

50

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

sfmuseum.net SEO score

69

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sfmuseum.net can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Sfmuseum.net main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

sfmuseum.net

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