Tools & Wizards About Us
rarebirdalert.co.uk screenshot

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

rarebirdalert.co.uk screenshot

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

rarebirdalert.co.uk

rarebirdalert.co.uk

255 ms

www.rarebirdalert.co.uk

www.rarebirdalert.co.uk

509 ms

index.aspx

index.aspx

363 ms

jquery-ui-1.8.7.custom.css

jquery-ui-1.8.7.custom.css

227 ms

jquery.rba.css

jquery.rba.css

318 ms

styles.css

styles.css

415 ms

index.aspx.css

index.aspx.css

414 ms

throbber.css

throbber.css

438 ms

popup.css

popup.css

430 ms

jquery-1.5.min.js

jquery-1.5.min.js

682 ms

jquery-ui-1.8.7.custom.min.js

jquery-ui-1.8.7.custom.min.js

923 ms

jquery.corner.js

jquery.corner.js

578 ms

UserNotice.js

UserNotice.js

501 ms

rss.js

rss.js

514 ms

script.js

script.js

520 ms

errorhandler.js

errorhandler.js

597 ms

ga.js

ga.js

67 ms

bg_slice_drop.gif

bg_slice_drop.gif

104 ms

footer_shadow.png

footer_shadow.png

86 ms

sign-in.gif

sign-in.gif

95 ms

ticker_prev.gif

ticker_prev.gif

102 ms

ticker_next.gif

ticker_next.gif

87 ms

Masthead_Main20.jpg

Masthead_Main20.jpg

193 ms

Masthead_Main19.jpg

Masthead_Main19.jpg

421 ms

Masthead_Main18.jpg

Masthead_Main18.jpg

350 ms

nextimage_chevon.png

nextimage_chevon.png

179 ms

product_box_topcap.gif

product_box_topcap.gif

199 ms

product_box_bottomcap.gif

product_box_bottomcap.gif

190 ms

product_1_pager.jpg

product_1_pager.jpg

284 ms

view_product_btn_pagers.gif

view_product_btn_pagers.gif

305 ms

product_2.jpg

product_2.jpg

284 ms

view_product_btn_web.gif

view_product_btn_web.gif

310 ms

product_3.jpg

product_3.jpg

379 ms

view_product_btn_phones.gif

view_product_btn_phones.gif

389 ms

freetrial-badge.png

freetrial-badge.png

392 ms

91608.jpg

91608.jpg

393 ms

91607.jpg

91607.jpg

436 ms

91606.JPG

91606.JPG

465 ms

91605.JPG

91605.JPG

475 ms

91601.jpg

91601.jpg

476 ms

91600.jpg

91600.jpg

477 ms

91599.jpg

91599.jpg

505 ms

91598.jpg

91598.jpg

520 ms

91597.jpg

91597.jpg

545 ms

91595.jpg

91595.jpg

566 ms

gallery_up.gif

gallery_up.gif

565 ms

gallery_down.gif

gallery_down.gif

564 ms

gallery_uploadbutton.gif

gallery_uploadbutton.gif

603 ms

2024-05-24crow.png

2024-05-24crow.png

621 ms

2024-05-24igo.png

2024-05-24igo.png

651 ms

footer_twitter.png

footer_twitter.png

662 ms

species-champion-logo.png

species-champion-logo.png

662 ms

rssnews.asp

rssnews.asp

667 ms

__utm.gif

__utm.gif

11 ms

dropshadow_top.png

dropshadow_top.png

621 ms

rare-bird-logo.gif

rare-bird-logo.gif

645 ms

collect

collect

27 ms

current_nav_bottom_arrow.gif

current_nav_bottom_arrow.gif

653 ms

nav_chevron.gif

nav_chevron.gif

656 ms

product_pricebadge.png

product_pricebadge.png

664 ms

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

rarebirdalert.co.uk

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: