Access sandiegoairandspace.org. San Diego Air & Space Museum

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value12.6 s

0/100

25%

SI (Speed Index)

Value18.8 s

0/100

10%

TBT (Total Blocking Time)

Value11,490 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.282

43/100

15%

TTI (Time to Interactive)

Value32.1 s

0/100

10%

sandiegoairandspace.org

377 ms

sandiegoairandspace.org

3604 ms

bootstrap.css

402 ms

formValidation.min.css

1335 ms

jumbotron.css

1504 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 48% of them (42 requests) were addressed to the original Sandiegoairandspace.org, 11% (10 requests) were made to Maps.googleapis.com and 10% (9 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (5.8 sec) relates to the external source Syndication.twitter.com.

Content Size

5.4 MB

After Optimization

5.1 MB

In fact, the total size of Sandiegoairandspace.org main page is 5.4 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. 85% 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 5.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 55.6 kB

Original 67.6 kB
After minification 58.8 kB
After compression 12.1 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. This page needs HTML code to be minified as it can gain 8.8 kB, which is 13% 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 55.6 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 137.1 kB

Original 5.1 MB
After minification 4.9 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. San Diego Air And Space images are well optimized though.

JavaScript Optimization

-34%

Potential reduce by 87.5 kB

Original 259.5 kB
After minification 259.5 kB
After compression 172.0 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 87.5 kB or 34% of the original size.

CSS Optimization

-9%

Potential reduce by 2.2 kB

Original 24.0 kB
After minification 24.0 kB
After compression 21.7 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. Sandiegoairandspace.org has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of San Diego Air And Space. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

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

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

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

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sandiegoairandspace.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 Sandiegoairandspace.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

sandiegoairandspace.org

Open Graph description is not detected on the main page of San Diego Air And Space. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

San Diego Air & Space Museum - Historical Balboa Park, San Diego

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)

Network Requests Diagram

sandiegoairandspace.org

sandiegoairandspace.org

bootstrap.css

formValidation.min.css

jumbotron.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

sandiegoairandspace.org

sandiegoairandspace.org

bootstrap.css

formValidation.min.css

jumbotron.css

calendar.css

custom.css

lightbox.css

media_queries.css

menu.css

plr3zms.js

flickr_retriever.js

site-utilities.js

element.js

widgets.js

jquery.min.js

bootstrap.min.js

lightbox.js

close.png

loading.gif

prev.png

next.png

logo_mobile.png

Hero_Web-Graphics_HOF2022.jpg

rummage_featured.jpg

GalileoFeatured.png

Hero_Web_GraphicsLittle_Engineers2-5.jpg

Hero_Web-Graphics_GroundSchool-OCT15.jpg

icon_test.png

museum_ticket.png

GalileoAvatar.png

women_tiny.png

rummage_icon.jpg

hof2022_icon.jpg

donate_icon.png

member_icon.png

event_icon.png

newsletter_tiny.png

museum_avatar.png

newsletter_go.png

sdasm_facebook_front.png

sdasm_twitter_front.png

sdasm_instagram_front.png