Tools & Wizards About Us

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

arboretum.harvard.edu

The Arnold Arboretum of Harvard University | Arnold Arboretum

Page Load Speed

3.3 sec in total

First Response

117 ms

Resources Loaded

1.4 sec

Page Rendered

1.8 sec

About Website

Visit arboretum.harvard.edu now to see the best up-to-date Arboretum Harvard content for United States and also check out these interesting facts you probably never knew about arboretum.harvard.edu

The Arnold Arboretum of Harvard University is a museum of trees teaching the world about plants. A 281-acre preserve laid out by pioneering American landscape architect Frederick Law Olmsted, the Arbo...

Visit arboretum.harvard.edu

Key Findings

We analyzed Arboretum.harvard.edu page load time and found that the first response time was 117 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

arboretum.harvard.edu performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value36.4 s

0/100

25%

SI (Speed Index)

Value26.7 s

0/100

10%

TBT (Total Blocking Time)

Value640 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0.425

22/100

15%

TTI (Time to Interactive)

Value32.4 s

0/100

10%

Network Requests Diagram

arboretum.harvard.edu

117 ms

iconfonts.css

63 ms

select2.min.css

48 ms

frontend.min.css

72 ms

tooltip.css

69 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 94% of them (79 requests) were addressed to the original Arboretum.harvard.edu, 2% (2 requests) were made to Googletagmanager.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (380 ms) belongs to the original domain Arboretum.harvard.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.5 MB (27%)

Content Size

9.5 MB

After Optimization

7.0 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Arboretum.harvard.edu main page is 9.5 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. Only a small number of websites need less resources to load. Images take 7.9 MB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 961.2 kB

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 617.1 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 961.2 kB or 61% of the original size.

Image Optimization

-20%

Potential reduce by 1.6 MB

  • Original 7.9 MB
  • After minification 6.3 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. Obviously, Arboretum Harvard needs image optimization as it can save up to 1.6 MB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 28.8 kB
  • After minification 28.8 kB
  • After compression 28.8 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. Arboretum.harvard.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 55 (76%)

Requests Now

72

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Arboretum Harvard. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 27 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

arboretum.harvard.edu accessibility score

96

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Best Practices

arboretum.harvard.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

arboretum.harvard.edu SEO score

92

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

Links do not have descriptive text

Mobile Friendly

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/).

Impact

Issue

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 Arboretum.harvard.edu 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 Arboretum.harvard.edu 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

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