Tools & Wizards About Us
spexcertiprep.com screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

spexcertiprep.com

SPEX CertiPrep - SPEX CertiPrep Inorganic and Organic Certified Reference Materials

Page Load Speed

6.6 sec in total

First Response

62 ms

Resources Loaded

6 sec

Page Rendered

541 ms

spexcertiprep.com screenshot

About Website

Click here to check amazing SPEX Certi Prep content for United States. Otherwise, check out these important facts you probably never knew about spexcertiprep.com

SPEX CertiPrep Organic and Inorganic Certified Reference Materials. Serving the scientific community since 1954. Based in Metuchen, NJ.

Visit spexcertiprep.com

Key Findings

We analyzed Spexcertiprep.com page load time and found that the first response time was 62 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

spexcertiprep.com performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value79.3 s

0/100

25%

SI (Speed Index)

Value8.0 s

22/100

10%

TBT (Total Blocking Time)

Value1,300 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.475

18/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

spexcertiprep.com

62 ms

spex.com

64 ms

www.spex.com

533 ms

bootstrap.min.css

24 ms

fa.min.css

68 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Spexcertiprep.com, 77% (54 requests) were made to Spex.com and 4% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (4.8 sec) relates to the external source Spex.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 729.4 kB (5%)

Content Size

13.5 MB

After Optimization

12.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Spexcertiprep.com main page is 13.5 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. 75% 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 13.1 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 68.0 kB

  • Original 87.9 kB
  • After minification 87.6 kB
  • After compression 19.9 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 68.0 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 614.3 kB

  • Original 13.1 MB
  • After minification 12.5 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. SPEX Certi Prep images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 31.3 kB

  • Original 204.4 kB
  • After minification 204.4 kB
  • After compression 173.1 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 31.3 kB or 15% of the original size.

CSS Optimization

-17%

Potential reduce by 15.9 kB

  • Original 90.9 kB
  • After minification 90.9 kB
  • After compression 75.0 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. Spexcertiprep.com needs all CSS files to be minified and compressed as it can save up to 15.9 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (64%)

Requests Now

58

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SPEX Certi Prep. 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 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

spexcertiprep.com

spexcertiprep.com

62 ms

spex.com

spex.com

64 ms

www.spex.com

www.spex.com

533 ms

bootstrap.min.css

bootstrap.min.css

24 ms

fa.min.css

fa.min.css

68 ms

font-family.css

font-family.css

74 ms

slick.css

slick.css

71 ms

animations.css

animations.css

64 ms

jquery.dataTables.min.css

jquery.dataTables.min.css

70 ms

custom.css

custom.css

55 ms

responsive.css

responsive.css

75 ms

style.css

style.css

72 ms

jsmaps.css

jsmaps.css

78 ms

tagify.css

tagify.css

71 ms

froala_style.css

froala_style.css

78 ms

js

js

628 ms

js

js

690 ms

ws-tracking.js

ws-tracking.js

71 ms

email-decode.min.js

email-decode.min.js

65 ms

jquery.min.js

jquery.min.js

165 ms

jquery.validate.min.js

jquery.validate.min.js

180 ms

jquery.validate.unobtrusive.min.js

jquery.validate.unobtrusive.min.js

182 ms

modernizr-2.6.2.js

modernizr-2.6.2.js

181 ms

popper.min.js

popper.min.js

481 ms

bootstrap.min.js

bootstrap.min.js

180 ms

slick.min.js

slick.min.js

559 ms

css3-animate-it.js

css3-animate-it.js

559 ms

custom.js

custom.js

566 ms

jquery.dataTables.min.js

jquery.dataTables.min.js

543 ms

jsmaps-libs.js

jsmaps-libs.js

558 ms

jsmaps-panzoom.js

jsmaps-panzoom.js

598 ms

jsmaps.js

jsmaps.js

685 ms

cardValidator.js

cardValidator.js

684 ms

jquery.form.js

jquery.form.js

685 ms

bootstrap-4-latest.min.js

bootstrap-4-latest.min.js

177 ms

jquery-ui.js

jquery-ui.js

540 ms

gtm.js

gtm.js

616 ms

tiktok.svg

tiktok.svg

676 ms

Spex-gif.gif

Spex-gif.gif

674 ms

Quad-logo-text_by-ZeptoMertix-(red)-final-2.png

Quad-logo-text_by-ZeptoMertix-(red)-final-2.png

562 ms

Quad-logo-text_by-ZeptoMertix-(white)-cropped.png

Quad-logo-text_by-ZeptoMertix-(white)-cropped.png

564 ms

promo-sliderbanner2.png

promo-sliderbanner2.png

4738 ms

inorga-banner3.png

inorga-banner3.png

4785 ms

microplastics-gradient2.png

microplastics-gradient2.png

4349 ms

banner-template-PFAS2.png

banner-template-PFAS2.png

4399 ms

6ppd-sliderbanner.png

6ppd-sliderbanner.png

4074 ms

Inorganic-Standards-Updated.svg

Inorganic-Standards-Updated.svg

672 ms

Organic-Standards.svg

Organic-Standards.svg

675 ms

Custom-Standards.svg

Custom-Standards.svg

675 ms

spex-tm.png

spex-tm.png

676 ms

67-Icon.svg

67-Icon.svg

831 ms

ZeptoMetrix-logo-with-text-white.png

ZeptoMetrix-logo-with-text-white.png

835 ms

certified-img.png

certified-img.png

837 ms

31bfc504d09d.js

31bfc504d09d.js

656 ms

MyriadPro-Regular.woff

MyriadPro-Regular.woff

826 ms

fa-solid-900.woff

fa-solid-900.woff

652 ms

fa-regular-400.woff

fa-regular-400.woff

717 ms

MyriadPro-Bold.woff

MyriadPro-Bold.woff

867 ms

icomoon.ttf

icomoon.ttf

894 ms

icomoon.ttf

icomoon.ttf

958 ms

Gotham-Bold.woff

Gotham-Bold.woff

1035 ms

NunitoSans-VariableFont_YTLC,opsz,wdth,wght.ttf

NunitoSans-VariableFont_YTLC,opsz,wdth,wght.ttf

1057 ms

fa-brands-400.woff

fa-brands-400.woff

1251 ms

insight.min.js

insight.min.js

186 ms

insight.beta.min.js

insight.beta.min.js

27 ms

insight_tag_errors.gif

insight_tag_errors.gif

44 ms

JLPYDRRI

JLPYDRRI

334 ms

pd.js

pd.js

51 ms

antylia-button-36c32c7a2c903afcdf5de66d25797e55.png

antylia-button-36c32c7a2c903afcdf5de66d25797e55.png

19 ms

analytics

analytics

331 ms

Accessibility Review

spexcertiprep.com accessibility score

82

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

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

spexcertiprep.com best practices score

83

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

Page has valid source maps

SEO Factors

spexcertiprep.com SEO score

84

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

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

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

spexcertiprep.com

Open Graph description is not detected on the main page of SPEX Certi Prep. 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: