Report Summary

  • 31

    Performance

    Renders faster than
    52% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

openweathermap.org

Сurrent weather and forecast - OpenWeatherMap

Page Load Speed

4.9 sec in total

First Response

1.4 sec

Resources Loaded

2.9 sec

Page Rendered

569 ms

openweathermap.org screenshot

About Website

Click here to check amazing Open Weather Map content for India. Otherwise, check out these important facts you probably never knew about openweathermap.org

Get current weather, hourly forecast, daily forecast for 16 days, and 3-hourly forecast 5 days for your city. Historical weather data for 40 years back for any coordinate. Helpful stats, graphics, and...

Visit openweathermap.org

Key Findings

We analyzed Openweathermap.org page load time and found that the first response time was 1.4 sec and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

openweathermap.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.108

87/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

openweathermap.org

1449 ms

70a60c128cef9af892512b63a908cc49-1456039778

207 ms

64bcac555f440fc9d411629c99b809d5-1402933099

252 ms

css

27 ms

css

41 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 56% of them (23 requests) were addressed to the original Openweathermap.org, 12% (5 requests) were made to Pagead2.googlesyndication.com and 10% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Openweathermap.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 796.0 kB (19%)

Content Size

4.1 MB

After Optimization

3.3 MB

In fact, the total size of Openweathermap.org main page is 4.1 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. 50% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 72.5 kB

  • Original 87.3 kB
  • After minification 79.3 kB
  • After compression 14.8 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 72.5 kB or 83% of the original size.

Image Optimization

-18%

Potential reduce by 699.3 kB

  • Original 3.9 MB
  • After minification 3.2 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. Obviously, Open Weather Map needs image optimization as it can save up to 699.3 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-43%

Potential reduce by 24.1 kB

  • Original 55.5 kB
  • After minification 55.4 kB
  • After compression 31.3 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 24.1 kB or 43% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (37%)

Requests Now

38

After Optimization

24

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open Weather 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 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

openweathermap.org accessibility score

78

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

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

openweathermap.org best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the geolocation permission on page load

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

Missing source maps for large first-party JavaScript

SEO Factors

openweathermap.org SEO score

75

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

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

High

Tap targets are not sized appropriately

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 Openweathermap.org 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 Openweathermap.org 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 Weather 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: