Tools & Wizards About Us

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

dopplerltd.com

Lithium batteries for oceanographic instruments triple your deployments. Batteries for ADCPs, Argo floats, and custom projects.

Page Load Speed

8.9 sec in total

First Response

2.7 sec

Resources Loaded

6 sec

Page Rendered

224 ms

About Website

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

Doppler Ltd. sells lithium battery packs for oceanographic instruments including ADCPs, Argo floats & for custom projects. Contact us for technical support.

Visit dopplerltd.com

Key Findings

We analyzed Dopplerltd.com page load time and found that the first response time was 2.7 sec and then it took 6.2 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

dopplerltd.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value12.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.5 s

0/100

25%

SI (Speed Index)

Value16.9 s

0/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value20.8 s

2/100

10%

Network Requests Diagram

dopplerltd.com

2672 ms

css

29 ms

grid.css

104 ms

base.css

137 ms

layout.css

169 ms

Our browser made a total of 128 requests to load all elements on the main page. We found that 97% of them (124 requests) were addressed to the original Dopplerltd.com, 2% (3 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Dopplerltd.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 542.7 kB (64%)

Content Size

844.4 kB

After Optimization

301.8 kB

  • Images
  • JavaScript
  • CSS

In fact, the total size of Dopplerltd.com main page is 844.4 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. 60% of websites need less resources to load. CSS take 521.9 kB which makes up the majority of the site volume.

HTML Optimization

-0%

Potential reduce by -8 B

  • Original 0 B

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 web page is already compressed.

Image Optimization

-3%

Potential reduce by 5.0 kB

  • Original 192.8 kB
  • After minification 187.8 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. Dopplerltd images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 89.2 kB

  • Original 129.7 kB
  • After minification 129.0 kB
  • After compression 40.6 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 89.2 kB or 69% of the original size.

CSS Optimization

-86%

Potential reduce by 448.6 kB

  • Original 521.9 kB
  • After minification 444.0 kB
  • After compression 73.3 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. Dopplerltd.com needs all CSS files to be minified and compressed as it can save up to 448.6 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 117 (95%)

Requests Now

123

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 123 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dopplerltd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 52 to 1 for JavaScripts and from 67 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

dopplerltd.com accessibility score

89

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

dopplerltd.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

High

Page has valid source maps

SEO Factors

dopplerltd.com SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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 Dopplerltd.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 Dopplerltd.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 description is not detected on the main page of Dopplerltd. 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: