Access legacy.calacademy.org. California Academy of Sciences in San Francisco, CA

Report Summary

About Website

Visit legacy.calacademy.org now to see the best up-to-date Legacy CA L Academy content for United States and also check out these interesting facts you probably never knew about legacy.calacademy.org

The California Academy of Sciences is a science museum—and scientific and educational institution—located in San Francisco's Golden Gate Park.

Visit legacy.calacademy.org

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value2,270 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

legacy.calacademy.org

159 ms

www.calacademy.org

292 ms

gtm.js

89 ms

css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css

71 ms

css_OO6JAkw_m0dHggmHUQU5BjnsCpCRgoifwmnyr0BHztI.css

136 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Legacy.calacademy.org, 57% (29 requests) were made to Calacademy.org and 20% (10 requests) were made to . The less responsive or slowest element that took the longest time to load (505 ms) relates to the external source S3.us-west-2.amazonaws.com.

Content Size

1.6 MB

After Optimization

1.4 MB

In fact, the total size of Legacy.calacademy.org main page is 1.6 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. 45% of websites need less resources to load. Images take 805.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 53.8 kB

Original 66.9 kB
After minification 63.0 kB
After compression 13.1 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 53.8 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 707 B

Original 805.4 kB
After minification 804.7 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. Legacy CA L Academy images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 9.3 kB

Original 276.9 kB
After minification 276.2 kB
After compression 267.6 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

-33%

Potential reduce by 145.4 kB

Original 439.8 kB
After minification 437.6 kB
After compression 294.5 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. Legacy.calacademy.org needs all CSS files to be minified and compressed as it can save up to 145.4 kB or 33% of the original size.

Requests Now

After Optimization

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Legacy CA L Academy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

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/).

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 Legacy.calacademy.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 Legacy.calacademy.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

legacy.calacademy.org

Open Graph data is detected on the main page of Legacy CA L Academy. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

California Academy of Sciences in San Francisco, CA

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)