Tools & Wizards About Us

Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

rarebirdalert.co.uk

Rare Bird Alert

Page Load Speed

3.2 sec in total

First Response

255 ms

Resources Loaded

2.8 sec

Page Rendered

192 ms

About Website

Welcome to rarebirdalert.co.uk homepage info - get ready to check Rare Bird Alert best content for United Kingdom right away, or after learning these important things about rarebirdalert.co.uk

The UK’s leading birdnews service since 1991. Sending over 90,000 instant and reliable birdnews reports each year. On pagers, smartphones, tablets and online.

Visit rarebirdalert.co.uk

Key Findings

We analyzed Rarebirdalert.co.uk page load time and found that the first response time was 255 ms and then it took 3 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

rarebirdalert.co.uk performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.072

96/100

15%

TTI (Time to Interactive)

Value1.7 s

100/100

10%

Network Requests Diagram

rarebirdalert.co.uk

255 ms

www.rarebirdalert.co.uk

509 ms

index.aspx

363 ms

jquery-ui-1.8.7.custom.css

227 ms

jquery.rba.css

318 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 95% of them (57 requests) were addressed to the original Rarebirdalert.co.uk, 3% (2 requests) were made to Ssl.google-analytics.com and 2% (1 request) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (923 ms) belongs to the original domain Rarebirdalert.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 308.4 kB (29%)

Content Size

1.1 MB

After Optimization

767.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rarebirdalert.co.uk 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. 35% of websites need less resources to load. Images take 677.5 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 18.4 kB

  • Original 23.3 kB
  • After minification 19.3 kB
  • After compression 4.9 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 4.0 kB, which is 17% 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 18.4 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 24.1 kB

  • Original 677.5 kB
  • After minification 653.4 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. Rare Bird Alert images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 225.4 kB

  • Original 327.5 kB
  • After minification 312.9 kB
  • After compression 102.0 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 225.4 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 40.5 kB

  • Original 47.6 kB
  • After minification 34.7 kB
  • After compression 7.0 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. Rarebirdalert.co.uk needs all CSS files to be minified and compressed as it can save up to 40.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (36%)

Requests Now

56

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rare Bird Alert. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

rarebirdalert.co.uk accessibility score

51

Accessibility Issues

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

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

rarebirdalert.co.uk best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

rarebirdalert.co.uk SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rarebirdalert.co.uk 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 Rarebirdalert.co.uk 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 Rare Bird Alert. 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: