Access data-converters.com. RS232 RS485 RS422 TTL USB Serial Fiber Optic Converters / Ethernet Data Converters

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value2.8 s

96/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

data-converters.com

177 ms

data-converters.com

327 ms

stylesheet.css

290 ms

stylesheet_css_buttons.css

292 ms

outline.css

291 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 93% of them (57 requests) were addressed to the original Data-converters.com, 3% (2 requests) were made to Shield.sitelock.com and 3% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (629 ms) belongs to the original domain Data-converters.com.

Content Size

1.1 MB

After Optimization

1.0 MB

In fact, the total size of Data-converters.com main page is 1.1 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. 30% of websites need less resources to load. Images take 991.7 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 84.7 kB

Original 98.0 kB
After minification 92.5 kB
After compression 13.3 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 84.7 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 1.1 kB

Original 991.7 kB
After minification 990.6 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. Data Converters images are well optimized though.

JavaScript Optimization

-21%

Potential reduce by 10.5 kB

Original 50.0 kB
After minification 47.0 kB
After compression 39.5 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 10.5 kB or 21% of the original size.

CSS Optimization

-49%

Potential reduce by 4.2 kB

Original 8.5 kB
After minification 7.8 kB
After compression 4.3 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. Data-converters.com needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 49% of the original size.

Requests Now

After Optimization

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Data Converters. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Data-converters.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 Data-converters.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

data-converters.com

Open Graph description is not detected on the main page of Data Converters. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

RS232 RS485 RS422 TTL USB Serial Fiber Optic Converters / Ethernet Data Converters

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

data-converters.com

data-converters.com

stylesheet.css

stylesheet_css_buttons.css

outline.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

data-converters.com

data-converters.com

stylesheet.css

stylesheet_css_buttons.css

outline.css

outline.js

jquery.min.js

corner_image.js

ban.css

list_all.js

fade-nav.css

fade-nav.js

sitelock.js

data-converters.com

tile_back.gif

header_bg_1152.jpg

logo.gif

payments.jpg

FedExUSPS-Ls.gif

positive_ssl-s.jpg

Animate-info.gif

RS232-to-RS485-Converter.jpg

RS232-to-RS422-Converter.jpg

RS232-to-RS485-RS422-Converter.jpg

RS232-to-TTL-Converter.jpg

RS232-to-TTL3.3v-Converter.jpg

RS485-to-TTL-Converter.jpg

RS485-RS422-to-TTL-Converter.jpg

RS232-Isolator.jpg

cvt-232a-4.jpg

DIN-Rail-Isolated-RS232-RS485-RS422-Converter-160x135.jpg

Isolated-RS232-to-RS485-Converter.jpg

Isolated-RS232-to-RS422-Converter.jpg

Opto-Isolated-RS232-to-RS485-RS422-Converter.jpg

DIN-Rail-Isolated-RS485-RS422-Converter-Repeater-160x135.jpg

Isolated-RS485-Hub-Splitter.jpg

USB-to-RS232-Converter.jpg

USB-to-dual-RS232-Converter.jpg

USB-RS485-Adapter.jpg

Isolated-USB-RS232-RS485-RS422-Converter.jpg

USB-to-dual-RS485-Converter.jpg

USB-RS422-Adapter.jpg

USB-to-dual-RS485-RS422-Converter.jpg