Tools & Wizards About Us

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

openchargemap.io

Open Charge Map - The global public registry of electric vehicle charging locations

Page Load Speed

513 ms in total

First Response

39 ms

Resources Loaded

474 ms

Page Rendered

0 ms

About Website

Click here to check amazing Open Charge Map content for Germany. Otherwise, check out these important facts you probably never knew about openchargemap.io

Open Charge Map is the global database of EV charging stations, managed and populated by EV drivers from all over the world.

Visit openchargemap.io

Key Findings

We analyzed Openchargemap.io page load time and found that the first response time was 39 ms and then it took 474 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

openchargemap.io performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value680 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

openchargemap.io

39 ms

openchargemap.io

71 ms

openchargemap.org

58 ms

openchargemap.org

34 ms

site

17 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 10% of them (2 requests) were addressed to the original Openchargemap.io, 29% (6 requests) were made to Openchargemap.org and 14% (3 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (90 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 11.4 kB (72%)

Content Size

15.9 kB

After Optimization

4.5 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Openchargemap.io main page is 15.9 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. 15% of websites need less resources to load. HTML takes 13.5 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 10.8 kB

  • Original 13.5 kB
  • After minification 8.0 kB
  • After compression 2.7 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 5.5 kB, which is 41% 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 10.8 kB or 80% of the original size.

Image Optimization

-22%

Potential reduce by 396 B

  • Original 1.8 kB
  • After minification 1.4 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. Obviously, Open Charge Map needs image optimization as it can save up to 396 B or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-39%

Potential reduce by 241 B

  • Original 617 B
  • After minification 617 B
  • After compression 376 B

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. Openchargemap.io needs all CSS files to be minified and compressed as it can save up to 241 B or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (75%)

Requests Now

16

After Optimization

4

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open Charge Map. 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 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

openchargemap.io accessibility score

92

Accessibility Issues

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.

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

<frame> or <iframe> elements do not have a title

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

openchargemap.io best practices score

75

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

openchargemap.io SEO score

92

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Openchargemap.io 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 Openchargemap.io 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 Open Charge Map. 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: