Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 77

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

reismangroup.caltech.edu

The Reisman Group

Page Load Speed

5 sec in total

First Response

336 ms

Resources Loaded

4.1 sec

Page Rendered

566 ms

reismangroup.caltech.edu screenshot

About Website

Click here to check amazing Reisman Group Caltech content for United States. Otherwise, check out these important facts you probably never knew about reismangroup.caltech.edu

The Reisman Laboratory conducts research in the field of natural product synthesis, with an emphasis on the development of new synthetic methods that facilitate the construction of complex molecules.

Visit reismangroup.caltech.edu

Key Findings

We analyzed Reismangroup.caltech.edu page load time and found that the first response time was 336 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

reismangroup.caltech.edu performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value6.5 s

59/100

10%

Network Requests Diagram

reismangroup.caltech.edu

336 ms

main.css

207 ms

embed

51 ms

CaltechLogo_1.png

72 ms

Group_16_Jan.jpg

3573 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 21% of them (4 requests) were addressed to the original Reismangroup.caltech.edu, 21% (4 requests) were made to Calendar.google.com and 21% (4 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Reismangroup.caltech.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 238.8 kB (4%)

Content Size

5.9 MB

After Optimization

5.7 MB

In fact, the total size of Reismangroup.caltech.edu main page is 5.9 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 10% of websites need less resources to load. Images take 5.7 MB which makes up the majority of the site volume.

HTML Optimization

-63%

Potential reduce by 2.6 kB

  • Original 4.2 kB
  • After minification 3.9 kB
  • After compression 1.5 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 2.6 kB or 63% of the original size.

Image Optimization

-2%

Potential reduce by 97.7 kB

  • Original 5.7 MB
  • After minification 5.6 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. Reisman Group Caltech images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 116.3 kB

  • Original 187.1 kB
  • After minification 187.1 kB
  • After compression 70.9 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 116.3 kB or 62% of the original size.

CSS Optimization

-78%

Potential reduce by 22.2 kB

  • Original 28.4 kB
  • After minification 27.4 kB
  • After compression 6.2 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. Reismangroup.caltech.edu needs all CSS files to be minified and compressed as it can save up to 22.2 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (35%)

Requests Now

17

After Optimization

11

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Reisman Group Caltech. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

reismangroup.caltech.edu accessibility score

96

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.

Best Practices

reismangroup.caltech.edu best practices score

77

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

reismangroup.caltech.edu SEO score

91

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

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Reismangroup.caltech.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Reismangroup.caltech.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 description is not detected on the main page of Reisman Group Caltech. 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: