Tools & Wizards About Us
alfa-chemistry.com screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

alfa-chemistry.com

Supplier of reagents and services for chemistry and life science

Page Load Speed

3.6 sec in total

First Response

130 ms

Resources Loaded

2.1 sec

Page Rendered

1.3 sec

alfa-chemistry.com screenshot

About Website

Visit alfa-chemistry.com now to see the best up-to-date Alfa Chemistry content for United States and also check out these interesting facts you probably never knew about alfa-chemistry.com

Alfa Chemistry provides the most comprehensive chemicals for research and development, particularly the building blocks, custom made intermediates, carbohydrates, heterocyclic, chiral compounds, fine ...

Visit alfa-chemistry.com

Key Findings

We analyzed Alfa-chemistry.com page load time and found that the first response time was 130 ms and then it took 3.4 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

alfa-chemistry.com performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

16/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value2,380 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

Network Requests Diagram

alfa-chemistry.com

130 ms

alfa-chemistry.com

249 ms

www.alfa-chemistry.com

396 ms

home.min.css

246 ms

jquery.min.js

295 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 93% of them (87 requests) were addressed to the original Alfa-chemistry.com, 3% (3 requests) were made to Zcsub-cmpzourl.maillist-manage.com and 1% (1 request) were made to Recaptcha.net. The less responsive or slowest element that took the longest time to load (578 ms) belongs to the original domain Alfa-chemistry.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 435.8 kB (14%)

Content Size

3.1 MB

After Optimization

2.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alfa-chemistry.com main page is 3.1 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 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 117.4 kB

  • Original 134.4 kB
  • After minification 82.6 kB
  • After compression 17.0 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. This page needs HTML code to be minified as it can gain 51.8 kB, which is 39% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 117.4 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 12.4 kB

  • Original 2.3 MB
  • After minification 2.3 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. Alfa Chemistry images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 208.3 kB

  • Original 528.7 kB
  • After minification 528.6 kB
  • After compression 320.4 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 208.3 kB or 39% of the original size.

CSS Optimization

-98%

Potential reduce by 97.7 kB

  • Original 100.0 kB
  • After minification 8.5 kB
  • After compression 2.4 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. Alfa-chemistry.com needs all CSS files to be minified and compressed as it can save up to 97.7 kB or 98% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (19%)

Requests Now

83

After Optimization

67

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alfa Chemistry. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

alfa-chemistry.com

alfa-chemistry.com

130 ms

alfa-chemistry.com

alfa-chemistry.com

249 ms

www.alfa-chemistry.com

www.alfa-chemistry.com

396 ms

home.min.css

home.min.css

246 ms

jquery.min.js

jquery.min.js

295 ms

swiper.min.js

swiper.min.js

391 ms

bootstrap.min.js

bootstrap.min.js

196 ms

ibasket.minicontainer.min.css

ibasket.minicontainer.min.css

194 ms

ibasket.min.js

ibasket.min.js

196 ms

__footer.js

__footer.js

305 ms

jquery.cload.min.js

jquery.cload.min.js

306 ms

privacy.policy.min.css

privacy.policy.min.css

307 ms

jquery.privacy.policy.min.js

jquery.privacy.policy.min.js

307 ms

enterprise.js

enterprise.js

38 ms

optin.min.js

optin.min.js

514 ms

jquery.validationEngine.min.js

jquery.validationEngine.min.js

339 ms

jquery.validationEngine-en.js

jquery.validationEngine-en.js

340 ms

jquery.validationEngine.css

jquery.validationEngine.css

341 ms

gtm.js

gtm.js

137 ms

logo-white.svg

logo-white.svg

165 ms

nav-131.jpg

nav-131.jpg

169 ms

nav-8238.jpg

nav-8238.jpg

272 ms

nav-9555.jpg

nav-9555.jpg

162 ms

nav-132.jpg

nav-132.jpg

163 ms

nav-132-2.jpg

nav-132-2.jpg

273 ms

nav-133.jpg

nav-133.jpg

208 ms

nav-134.jpg

nav-134.jpg

209 ms

nav-135.jpg

nav-135.jpg

212 ms

banner-img-1.png

banner-img-1.png

506 ms

banner-img-2.png

banner-img-2.png

310 ms

banner-img-3.png

banner-img-3.png

309 ms

ad-202204-hot3.svg

ad-202204-hot3.svg

273 ms

banner-img-4.png

banner-img-4.png

385 ms

banner-img-5-2.png

banner-img-5-2.png

498 ms

instrument-1.jpg

instrument-1.jpg

332 ms

instrument-2.jpg

instrument-2.jpg

361 ms

instrument-3.jpg

instrument-3.jpg

384 ms

instrument-4.jpg

instrument-4.jpg

386 ms

instrument-5.jpg

instrument-5.jpg

462 ms

instrument-6.jpg

instrument-6.jpg

461 ms

instrument-7.jpg

instrument-7.jpg

462 ms

instrument-8.jpg

instrument-8.jpg

464 ms

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479 ms

home-product-4.jpg

home-product-4.jpg

491 ms

home-product-5.jpg

home-product-5.jpg

498 ms

home-product-6.jpg

home-product-6.jpg

578 ms

home-product-2.jpg

home-product-2.jpg

511 ms

home-product-3.jpg

home-product-3.jpg

523 ms

home-product-1.jpg

home-product-1.jpg

529 ms

index-service-img-1.jpg

index-service-img-1.jpg

531 ms

Montserrat-Regular.woff

Montserrat-Regular.woff

535 ms

icomoon.ttf

icomoon.ttf

539 ms

Montserrat-Bold.woff

Montserrat-Bold.woff

560 ms

home-resource-img-1.jpg

home-resource-img-1.jpg

559 ms

home-icon-logo-2.svg

home-icon-logo-2.svg

518 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

38 ms

home-icon-06.svg

home-icon-06.svg

515 ms

ad-202204-safe-storage-system.gif

ad-202204-safe-storage-system.gif

516 ms

ad-202204-left@2x.png

ad-202204-left@2x.png

513 ms

ad-202204-btn.svg

ad-202204-btn.svg

513 ms

ad-202204-new.svg

ad-202204-new.svg

481 ms

PRI_Programs_Registrar_Certified_ISO9001_WH.png

PRI_Programs_Registrar_Certified_ISO9001_WH.png

480 ms

loading.gif

loading.gif

485 ms

icon-cart.svg

icon-cart.svg

437 ms

qrcode.png

qrcode.png

448 ms

12ff72d02_download_pdf.png

12ff72d02_download_pdf.png

466 ms

dynamiccode

dynamiccode

471 ms

videoclose.png

videoclose.png

442 ms

hot.gif

hot.gif

419 ms

recaptcha__en.js

recaptcha__en.js

35 ms

info

info

404 ms

CaptchaVerify.zc

CaptchaVerify.zc

112 ms

TrailEvent

TrailEvent

463 ms

dig.js

dig.js

397 ms

body-bg-blue-left.jpg

body-bg-blue-left.jpg

416 ms

body-bg-green-right.jpg

body-bg-green-right.jpg

420 ms

home-icon-07.svg

home-icon-07.svg

364 ms

home-icon-logo-3.svg

home-icon-logo-3.svg

379 ms

home-icon-logo.svg

home-icon-logo.svg

382 ms

icon-green.svg

icon-green.svg

397 ms

body-bg-left-green-line.png

body-bg-left-green-line.png

393 ms

home-icon-01.svg

home-icon-01.svg

400 ms

home-icon-02.svg

home-icon-02.svg

409 ms

home-icon-03.svg

home-icon-03.svg

410 ms

home-bg-01.svg

home-bg-01.svg

420 ms

home-icon-04.svg

home-icon-04.svg

399 ms

icon-resources-1-green.svg

icon-resources-1-green.svg

402 ms

icon-resources-2.svg

icon-resources-2.svg

411 ms

icon-resources-3.svg

icon-resources-3.svg

407 ms

icon-resources-4.svg

icon-resources-4.svg

401 ms

home-bg-02.svg

home-bg-02.svg

386 ms

home-icon-05.svg

home-icon-05.svg

390 ms

icon-cart-white.svg

icon-cart-white.svg

393 ms

structure-default.jpg

structure-default.jpg

406 ms

Accessibility Review

alfa-chemistry.com accessibility score

90

Accessibility Issues

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

Links do not have a discernible name

Best Practices

alfa-chemistry.com best practices score

67

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

alfa-chemistry.com SEO score

93

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alfa-chemistry.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 Alfa-chemistry.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

alfa-chemistry.com

Open Graph description is not detected on the main page of Alfa Chemistry. 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: