Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

sfmuseum.net

Museum of the City of San Francisco

Page Load Speed

1.6 sec in total

First Response

220 ms

Resources Loaded

1.2 sec

Page Rendered

180 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 220 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

sfmuseum.net performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

77/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

43/100

25%

SI (Speed Index)

Value7.5 s

27/100

10%

TBT (Total Blocking Time)

Value1,120 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.17

70/100

15%

TTI (Time to Interactive)

Value17.0 s

5/100

10%

Network Requests Diagram

sfmuseum.net

220 ms

styles_nn.css

134 ms

navigation.js

138 ms

dc_jumpmenu.js

139 ms

js

98 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 58% of them (26 requests) were addressed to the original Sfmuseum.net, 11% (5 requests) were made to Youtube.com and 7% (3 requests) were made to Cdn.userway.org. The less responsive or slowest element that took the longest time to load (899 ms) belongs to the original domain Sfmuseum.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 95.2 kB (6%)

Content Size

1.7 MB

After Optimization

1.6 MB

In fact, the total size of Sfmuseum.net main page is 1.7 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 22.6 kB

  • Original 28.0 kB
  • After minification 16.1 kB
  • After compression 5.4 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 42% 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 22.6 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 24.3 kB

  • Original 1.3 MB
  • After minification 1.3 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. Sf Museum images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 47.4 kB

  • Original 304.1 kB
  • After minification 303.3 kB
  • After compression 256.7 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 47.4 kB or 16% of the original size.

CSS Optimization

-1%

Potential reduce by 850 B

  • Original 60.9 kB
  • After minification 60.6 kB
  • After compression 60.0 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. Sfmuseum.net has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (31%)

Requests Now

42

After Optimization

29

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sf 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 14 to 1 for JavaScripts and as a result speed up the page load time.

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

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: