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sfmuseum.org screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

sfmuseum.org

Museum of the City of San Francisco

Page Load Speed

1.8 sec in total

First Response

170 ms

Resources Loaded

1.5 sec

Page Rendered

190 ms

sfmuseum.org screenshot

About Website

Visit sfmuseum.org now to see the best up-to-date Sf Museum content for United States and also check out these interesting facts you probably never knew about sfmuseum.org

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.org

Key Findings

We analyzed Sfmuseum.org page load time and found that the first response time was 170 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

sfmuseum.org performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

55/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value1,500 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.322

36/100

15%

TTI (Time to Interactive)

Value18.6 s

3/100

10%

Network Requests Diagram

sfmuseum.org

170 ms

styles_nn.css

70 ms

navigation.js

137 ms

dc_jumpmenu.js

136 ms

js

73 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 43% of them (26 requests) were addressed to the original Sfmuseum.org, 11% (7 requests) were made to Static-fotomoto-com.s3.amazonaws.com and 10% (6 requests) were made to Widget.fotomoto.com. The less responsive or slowest element that took the longest time to load (880 ms) belongs to the original domain Sfmuseum.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 243.8 kB (10%)

Content Size

2.4 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sfmuseum.org main page is 2.4 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. 40% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-43%

Potential reduce by 125.2 kB

  • Original 288.7 kB
  • After minification 276.6 kB
  • After compression 163.4 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. 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 125.2 kB or 43% of the original size.

Image Optimization

-3%

Potential reduce by 37.5 kB

  • Original 1.4 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

-13%

Potential reduce by 77.1 kB

  • Original 613.3 kB
  • After minification 612.3 kB
  • After compression 536.2 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 77.1 kB or 13% of the original size.

CSS Optimization

-5%

Potential reduce by 4.0 kB

  • Original 82.2 kB
  • After minification 81.9 kB
  • After compression 78.2 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.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 23 (40%)

Requests Now

58

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 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 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sfmuseum.org

sfmuseum.org

170 ms

styles_nn.css

styles_nn.css

70 ms

navigation.js

navigation.js

137 ms

dc_jumpmenu.js

dc_jumpmenu.js

136 ms

js

js

73 ms

jquery.min.js

jquery.min.js

31 ms

sss.min.js

sss.min.js

181 ms

sss.css

sss.css

181 ms

widget.js

widget.js

239 ms

adImprScripting.asp

adImprScripting.asp

273 ms

20409a11f8ac7bce6171dfe42f0536f41cd53792.js

20409a11f8ac7bce6171dfe42f0536f41cd53792.js

88 ms

space.gif

space.gif

78 ms

bg-header.gif

bg-header.gif

78 ms

logo-inside.gif

logo-inside.gif

161 ms

image4.jpg

image4.jpg

779 ms

image1.jpg

image1.jpg

244 ms

image7.jpg

image7.jpg

773 ms

image2.jpg

image2.jpg

583 ms

image6.jpg

image6.jpg

774 ms

image3.jpg

image3.jpg

582 ms

image5.jpg

image5.jpg

784 ms

btn-gold.jpg

btn-gold.jpg

656 ms

btn-fire.jpg

btn-fire.jpg

656 ms

btn-gg.jpg

btn-gg.jpg

771 ms

btn-about.jpg

btn-about.jpg

771 ms

btn-shop.jpg

btn-shop.jpg

880 ms

GA3OszbyQ1g

GA3OszbyQ1g

136 ms

sees.gif

sees.gif

848 ms

bg-butt.jpg

bg-butt.jpg

849 ms

bg-footshadow.gif

bg-footshadow.gif

848 ms

philantro.js

philantro.js

717 ms

fotomoto-min.css

fotomoto-min.css

46 ms

20409a11f8ac7bce6171dfe42f0536f41cd53792.css

20409a11f8ac7bce6171dfe42f0536f41cd53792.css

23 ms

fotomoto-min.js

fotomoto-min.js

57 ms

widget_app_base_1715342638247.js

widget_app_base_1715342638247.js

19 ms

sPw0NJMWvc

sPw0NJMWvc

676 ms

arr.png

arr.png

779 ms

fotomoto_loading.gif

fotomoto_loading.gif

20 ms

432 ms

428 ms

widget_sprite.png

widget_sprite.png

38 ms

blank.gif

blank.gif

40 ms

fotomoto-metal-print-icon_19x15px.png

fotomoto-metal-print-icon_19x15px.png

276 ms

logo-fotomoto.png

logo-fotomoto.png

276 ms

www-player.css

www-player.css

9 ms

www-embed-player.js

www-embed-player.js

32 ms

base.js

base.js

74 ms

ad_status.js

ad_status.js

228 ms

LvMrC3vzHFP8SzxjvqNWRksbkOPiJTf11ILX4Pq8Ybc.js

LvMrC3vzHFP8SzxjvqNWRksbkOPiJTf11ILX4Pq8Ybc.js

159 ms

embed.js

embed.js

72 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

73 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

76 ms

Create

Create

123 ms

id

id

108 ms

en-US.json

en-US.json

8 ms

118 ms

72 ms

toolbar.html

toolbar.html

69 ms

analytics.js

analytics.js

9 ms

GenerateIT

GenerateIT

22 ms

collect

collect

15 ms

Accessibility Review

sfmuseum.org accessibility score

79

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.org 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.org SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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.org 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.org 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.org

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: