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Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

sciencefirst.com

Science equipment for K-12 to higher education | Science First

Page Load Speed

1.4 sec in total

First Response

133 ms

Resources Loaded

1.1 sec

Page Rendered

169 ms

About Website

Welcome to sciencefirst.com homepage info - get ready to check Science First best content for United States right away, or after learning these important things about sciencefirst.com

Leading manufacturer and provider of quality educational science equipment and supplies to students from K-12 to higher education.

Visit sciencefirst.com

Key Findings

We analyzed Sciencefirst.com page load time and found that the first response time was 133 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

sciencefirst.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value5.3 s

57/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value8.3 s

39/100

10%

Network Requests Diagram

sciencefirst.com

133 ms

www.sciencefirst.com

247 ms

grid.css

18 ms

base.css

26 ms

layout.css

28 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 89% of them (71 requests) were addressed to the original Sciencefirst.com, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (274 ms) belongs to the original domain Sciencefirst.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 59.0 kB (14%)

Content Size

425.1 kB

After Optimization

366.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sciencefirst.com main page is 425.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Javascripts take 139.6 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 56.6 kB

  • Original 70.8 kB
  • After minification 69.0 kB
  • After compression 14.3 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 56.6 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 126.4 kB
  • After minification 126.4 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. Science First images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 840 B

  • Original 139.6 kB
  • After minification 139.6 kB
  • After compression 138.7 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

-2%

Potential reduce by 1.6 kB

  • Original 88.4 kB
  • After minification 87.3 kB
  • After compression 86.7 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. Sciencefirst.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 65 (87%)

Requests Now

75

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science First. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 40 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

sciencefirst.com accessibility score

94

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

sciencefirst.com best practices score

92

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

SEO Factors

sciencefirst.com SEO score

100

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

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