Tools & Wizards About Us
dbb-valves.com screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

dbb-valves.com

Valve Manufacturer UK | Alco Valves | Double Block & Bleed Valves | Alco

Page Load Speed

6.3 sec in total

First Response

244 ms

Resources Loaded

5.1 sec

Page Rendered

921 ms

dbb-valves.com screenshot

About Website

Visit dbb-valves.com now to see the best up-to-date Dbb Valves content and also check out these interesting facts you probably never knew about dbb-valves.com

Alco Valves is an established manufacturer of high-quality valves for many applications including double block & bleed valves, instrumentation valves and more.

Visit dbb-valves.com

Key Findings

We analyzed Dbb-valves.com page load time and found that the first response time was 244 ms and then it took 6 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

dbb-valves.com performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value22.1 s

0/100

25%

SI (Speed Index)

Value16.6 s

0/100

10%

TBT (Total Blocking Time)

Value2,500 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.198

62/100

15%

TTI (Time to Interactive)

Value28.2 s

0/100

10%

Network Requests Diagram

dbb-valves.com

244 ms

www.alco-valves.com

210 ms

www.alco-valves.com

2598 ms

css

40 ms

vc-mega-footer-public.css

335 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Dbb-valves.com, 89% (94 requests) were made to Alco-valves.com and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source Alco-valves.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.1 MB (37%)

Content Size

5.5 MB

After Optimization

3.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dbb-valves.com main page is 5.5 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. 80% 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 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 136.7 kB

  • Original 153.3 kB
  • After minification 146.1 kB
  • After compression 16.6 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 136.7 kB or 89% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 3.0 MB
  • After minification 3.0 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. Dbb Valves images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 1.2 MB

  • Original 1.6 MB
  • After minification 739.1 kB
  • After compression 389.5 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 1.2 MB or 75% of the original size.

CSS Optimization

-89%

Potential reduce by 754.0 kB

  • Original 848.5 kB
  • After minification 766.3 kB
  • After compression 94.5 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. Dbb-valves.com needs all CSS files to be minified and compressed as it can save up to 754.0 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (33%)

Requests Now

102

After Optimization

68

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dbb Valves. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dbb-valves.com

dbb-valves.com

244 ms

www.alco-valves.com

www.alco-valves.com

210 ms

www.alco-valves.com

www.alco-valves.com

2598 ms

css

css

40 ms

vc-mega-footer-public.css

vc-mega-footer-public.css

335 ms

style.min.css

style.min.css

498 ms

styles.css

styles.css

340 ms

slick.css

slick.css

340 ms

slick-theme.css

slick-theme.css

341 ms

stock-ticker.css

stock-ticker.css

416 ms

stock-ticker-custom.css

stock-ticker-custom.css

415 ms

foundation.css

foundation.css

753 ms

js_composer.min.css

js_composer.min.css

1002 ms

jquery.min.js

jquery.min.js

26 ms

vc-mega-footer-public.js

vc-mega-footer-public.js

422 ms

stockdio_chart_historical-wp.js

stockdio_chart_historical-wp.js

500 ms

style.css

style.css

740 ms

wp-polyfill.min.js

wp-polyfill.min.js

432 ms

index.js

index.js

249 ms

slick.min.js

slick.min.js

253 ms

jquery.webticker.min.js

jquery.webticker.min.js

331 ms

jquery.stockticker.min.js

jquery.stockticker.min.js

337 ms

foundation.js

foundation.js

984 ms

api.js

api.js

58 ms

index.js

index.js

421 ms

wp-embed.min.js

wp-embed.min.js

492 ms

js_composer_front.min.js

js_composer_front.min.js

505 ms

custom.js

custom.js

506 ms

gtm.js

gtm.js

147 ms

search.svg

search.svg

192 ms

alco-valves-logo.svg

alco-valves-logo.svg

190 ms

alco-valves-logo-white.svg

alco-valves-logo-white.svg

188 ms

search-red.svg

search-red.svg

186 ms

Alco-Armytage-Road-Brighouse.jpg

Alco-Armytage-Road-Brighouse.jpg

215 ms

capabilities.jpg

capabilities.jpg

280 ms

case-studies.jpg

case-studies.jpg

215 ms

company-global-partners-798x483.png

company-global-partners-798x483.png

215 ms

company-careers-798x483.png

company-careers-798x483.png

287 ms

company-brochure-downloads-1-798x481.jpg

company-brochure-downloads-1-798x481.jpg

286 ms

subsea-floating-ball-valves-1-798x480.jpg

subsea-floating-ball-valves-1-798x480.jpg

285 ms

subsea-needle-valves-2-798x480.jpg

subsea-needle-valves-2-798x480.jpg

286 ms

subsea-check-valves-2-798x480.jpg

subsea-check-valves-2-798x480.jpg

322 ms

subsea-temporary-service-valves-2-798x480.jpg

subsea-temporary-service-valves-2-798x480.jpg

392 ms

subsea-trunnion-ball-valves-2-798x480.jpg

subsea-trunnion-ball-valves-2-798x480.jpg

392 ms

dbb-xc-range-valves-798x480.png

dbb-xc-range-valves-798x480.png

393 ms

dbb-floating-pattern-valves-798x480.png

dbb-floating-pattern-valves-798x480.png

394 ms

dbb-trunnion-valves-798x480.png

dbb-trunnion-valves-798x480.png

394 ms

dbb-sampling-injection-valves-798x483.png

dbb-sampling-injection-valves-798x483.png

405 ms

dbb-instrumentation-valves-798x480.png

dbb-instrumentation-valves-798x480.png

444 ms

dbb-monoflange-valves.jpg

dbb-monoflange-valves.jpg

453 ms

instrumentation-ball-valves-798x480.png

instrumentation-ball-valves-798x480.png

453 ms

instrumentation-needle-valves-798x480.png

instrumentation-needle-valves-798x480.png

454 ms

instrumentation-manifold-valves-v2-1.png

instrumentation-manifold-valves-v2-1.png

455 ms

instrumentation-piston-check-valves-798x480.png

instrumentation-piston-check-valves-798x480.png

487 ms

instrumentation-dbb-valves-798x480.png

instrumentation-dbb-valves-798x480.png

525 ms

4-300x300.jpg

4-300x300.jpg

537 ms

1-300x300.jpg

1-300x300.jpg

536 ms

2-300x300.jpg

2-300x300.jpg

537 ms

3-300x300.jpg

3-300x300.jpg

539 ms

total-1.svg

total-1.svg

568 ms

shell-1.svg

shell-1.svg

606 ms

chevron-1.svg

chevron-1.svg

622 ms

bp-1.svg

bp-1.svg

620 ms

saudi-aramco.svg

saudi-aramco.svg

598 ms

font

font

74 ms

v2.zopim.com

v2.zopim.com

57 ms

wp-polyfill-fetch.min.js

wp-polyfill-fetch.min.js

446 ms

wp-polyfill-dom-rect.min.js

wp-polyfill-dom-rect.min.js

464 ms

wp-polyfill-url.min.js

wp-polyfill-url.min.js

501 ms

wp-polyfill-formdata.min.js

wp-polyfill-formdata.min.js

494 ms

wp-polyfill-element-closest.min.js

wp-polyfill-element-closest.min.js

492 ms

wp-polyfill-object-fit.min.js

wp-polyfill-object-fit.min.js

494 ms

asset_composer.js

asset_composer.js

48 ms

analytics.js

analytics.js

23 ms

adgas-1.svg

adgas-1.svg

665 ms

valve-diagram.png

valve-diagram.png

832 ms

collect

collect

13 ms

js

js

48 ms

corrosion-protection.svg

corrosion-protection.svg

794 ms

material-traceability.svg

material-traceability.svg

789 ms

compliance-testing.svg

compliance-testing.svg

789 ms

bi-directional-flow.svg

bi-directional-flow.svg

789 ms

servicing-kits.svg

servicing-kits.svg

790 ms

temperature-rating.svg

temperature-rating.svg

755 ms

alco-valves-CHEMUK22.jpg

alco-valves-CHEMUK22.jpg

687 ms

alco-valves-company.jpg

alco-valves-company.jpg

688 ms

CyberSecurityUpdate.jpg

CyberSecurityUpdate.jpg

686 ms

40-years-emblem.png

40-years-emblem.png

686 ms

linkedin.svg

linkedin.svg

686 ms

twitter.svg

twitter.svg

677 ms

youtube-icon-footer.svg

youtube-icon-footer.svg

648 ms

search.svg

search.svg

637 ms

footer-accreditations-3.png

footer-accreditations-3.png

637 ms

rtg-banner-image.png

rtg-banner-image.png

640 ms

alco-valves-dbb-xc-range-valves.png

alco-valves-dbb-xc-range-valves.png

638 ms

capabilities-banner-home.jpg

capabilities-banner-home.jpg

606 ms

instrumentation.jpg

instrumentation.jpg

725 ms

pipeline.jpg

pipeline.jpg

633 ms

process.jpg

process.jpg

631 ms

subsea.jpg

subsea.jpg

632 ms

call-to-action.jpg

call-to-action.jpg

629 ms

alco-valves-CHEMUK22.jpg

alco-valves-CHEMUK22.jpg

282 ms

alco-valves-company.jpg

alco-valves-company.jpg

362 ms

CyberSecurityUpdate.jpg

CyberSecurityUpdate.jpg

362 ms

recaptcha__en.js

recaptcha__en.js

201 ms

ajax-loader.gif

ajax-loader.gif

185 ms

Accessibility Review

dbb-valves.com accessibility score

80

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-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

dbb-valves.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

dbb-valves.com SEO score

86

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

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 Dbb-valves.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 Dbb-valves.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

dbb-valves.com

Open Graph data is detected on the main page of Dbb Valves. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: