Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    28% of websites

  • 62

    SEO

    Google-friendlier than
    32% of websites

collections.otis.edu

Otis Collections Online

Page Load Speed

5.2 sec in total

First Response

1.4 sec

Resources Loaded

3.5 sec

Page Rendered

285 ms

collections.otis.edu screenshot

About Website

Visit collections.otis.edu now to see the best up-to-date Collections Otis content for United States and also check out these interesting facts you probably never knew about collections.otis.edu

Otis Collections Online

Visit collections.otis.edu

Key Findings

We analyzed Collections.otis.edu page load time and found that the first response time was 1.4 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

collections.otis.edu performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.137

79/100

15%

TTI (Time to Interactive)

Value9.7 s

28/100

10%

Network Requests Diagram

otis-collections-online

1446 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

145 ms

css_IoEPASs8P-5r05g2SNWObjq4Z3L1qnpf6AUHzJOv_Mw.css

138 ms

css_dI_s-DdZPdeJab4-JLfrcMavYsBeWxsbttE8-BYdpWw.css

139 ms

css_SDHb1X847Ap8EvPZKq_qJeluZIFpkXgj5CmFT9XFdk4.css

149 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Collections.otis.edu, 6% (5 requests) were made to Fast.fonts.com and 5% (4 requests) were made to W.sharethis.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Otis.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (60%)

Content Size

2.0 MB

After Optimization

785.1 kB

In fact, the total size of Collections.otis.edu main page is 2.0 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. 50% of websites need less resources to load. Javascripts take 636.3 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 86.9 kB

  • Original 106.6 kB
  • After minification 103.0 kB
  • After compression 19.6 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 86.9 kB or 82% of the original size.

Image Optimization

-14%

Potential reduce by 82.5 kB

  • Original 596.1 kB
  • After minification 513.6 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. Obviously, Collections Otis needs image optimization as it can save up to 82.5 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 458.8 kB

  • Original 636.3 kB
  • After minification 582.4 kB
  • After compression 177.5 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 458.8 kB or 72% of the original size.

CSS Optimization

-88%

Potential reduce by 546.3 kB

  • Original 620.7 kB
  • After minification 611.3 kB
  • After compression 74.4 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. Collections.otis.edu needs all CSS files to be minified and compressed as it can save up to 546.3 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (44%)

Requests Now

70

After Optimization

39

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Collections Otis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

collections.otis.edu accessibility score

58

Accessibility Issues

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

collections.otis.edu 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

collections.otis.edu SEO score

62

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Collections.otis.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 Collections.otis.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 Collections Otis. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: