Tools & Wizards About Us
nzblood.co.nz screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

nzblood.co.nz

New Zealand Blood Service

Page Load Speed

6 sec in total

First Response

621 ms

Resources Loaded

5.1 sec

Page Rendered

321 ms

nzblood.co.nz screenshot

About Website

Welcome to nzblood.co.nz homepage info - get ready to check Nz Blood best content for New Zealand right away, or after learning these important things about nzblood.co.nz

Save up to three lives when you give blood. Book your appointment to save a life online, download the app or call us on 0800 GIVE BLOOD (0800 448 325).

Visit nzblood.co.nz

Key Findings

We analyzed Nzblood.co.nz page load time and found that the first response time was 621 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

nzblood.co.nz performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.8 s

0/100

25%

SI (Speed Index)

Value19.4 s

0/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.144

78/100

15%

TTI (Time to Interactive)

Value24.2 s

0/100

10%

Network Requests Diagram

nzblood.co.nz

621 ms

www.nzblood.co.nz

2126 ms

j.php

8 ms

font-awesome.min.css

690 ms

styles.css

465 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 65% of them (44 requests) were addressed to the original Nzblood.co.nz, 6% (4 requests) were made to Facebook.com and 6% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Nzblood.co.nz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (65%)

Content Size

2.0 MB

After Optimization

674.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nzblood.co.nz main page is 2.0 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. Javascripts take 729.4 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 146.4 kB

  • Original 163.9 kB
  • After minification 119.8 kB
  • After compression 17.5 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 44.2 kB, which is 27% 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 146.4 kB or 89% of the original size.

Image Optimization

-0%

Potential reduce by 1.2 kB

  • Original 362.7 kB
  • After minification 361.5 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. Nz Blood images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 527.9 kB

  • Original 729.4 kB
  • After minification 725.5 kB
  • After compression 201.4 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 527.9 kB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 601.1 kB

  • Original 695.2 kB
  • After minification 688.8 kB
  • After compression 94.0 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. Nzblood.co.nz needs all CSS files to be minified and compressed as it can save up to 601.1 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (52%)

Requests Now

61

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nz Blood. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nzblood.co.nz

nzblood.co.nz

621 ms

www.nzblood.co.nz

www.nzblood.co.nz

2126 ms

j.php

j.php

8 ms

font-awesome.min.css

font-awesome.min.css

690 ms

styles.css

styles.css

465 ms

screen.css

screen.css

526 ms

v.gif

v.gif

4 ms

css

css

59 ms

jwplayer.js

jwplayer.js

350 ms

scripts.js

scripts.js

337 ms

BookAnAppointmentWidget.js

BookAnAppointmentWidget.js

227 ms

MobileBloodDriveSearchTypeahead.js

MobileBloodDriveSearchTypeahead.js

619 ms

nzb-logo-actual.png

nzb-logo-actual.png

277 ms

icon_facebook.png

icon_facebook.png

666 ms

icon_youtube.png

icon_youtube.png

674 ms

icon_instagram.png

icon_instagram.png

673 ms

icon_linkedin.gif

icon_linkedin.gif

674 ms

drop.png

drop.png

774 ms

linkedin-64.png

linkedin-64.png

910 ms

FillWyI1MDAiLCI1MDAiXQ-NZ-Blood-13.06.12-46.jpg

FillWyI1MDAiLCI1MDAiXQ-NZ-Blood-13.06.12-46.jpg

846 ms

nzmap.png

nzmap.png

1142 ms

FillWyIzNzUiLCIyOTMiXQ-NZ-Blood-13.06.12-46.jpg

FillWyIzNzUiLCIyOTMiXQ-NZ-Blood-13.06.12-46.jpg

931 ms

FillWyIzNzUiLCIyOTMiXQ-Map.jpg

FillWyIzNzUiLCIyOTMiXQ-Map.jpg

889 ms

Whole-Blood-Web-Tile-large.jpg

Whole-Blood-Web-Tile-large.jpg

1000 ms

FillWyIxMzIiLCIxMzIiXQ-Shane.jpg

FillWyIxMzIiLCIxMzIiXQ-Shane.jpg

1504 ms

FillWyIxMDIiLCIxMDIiXQ-Shane.jpg

FillWyIxMDIiLCIxMDIiXQ-Shane.jpg

1323 ms

FillWyI3OSIsIjc5Il0-Shane.jpg

FillWyI3OSIsIjc5Il0-Shane.jpg

1343 ms

FillWyIxMzIiLCIxMzIiXQ-Lucy-Goose-low-res.JPG

FillWyIxMzIiLCIxMzIiXQ-Lucy-Goose-low-res.JPG

1411 ms

FillWyIxMDIiLCIxMDIiXQ-Lucy-Goose-low-res.JPG

FillWyIxMDIiLCIxMDIiXQ-Lucy-Goose-low-res.JPG

1231 ms

FillWyI3OSIsIjc5Il0-Lucy-Goose-low-res.JPG

FillWyI3OSIsIjc5Il0-Lucy-Goose-low-res.JPG

1624 ms

FillWyIxMzIiLCIxMzIiXQ-12721700-10153387414857742-1418727850-n-Copy.jpg

FillWyIxMzIiLCIxMzIiXQ-12721700-10153387414857742-1418727850-n-Copy.jpg

1453 ms

FillWyIxMDIiLCIxMDIiXQ-12721700-10153387414857742-1418727850-n-Copy.jpg

FillWyIxMDIiLCIxMDIiXQ-12721700-10153387414857742-1418727850-n-Copy.jpg

1537 ms

FillWyI3OSIsIjc5Il0-12721700-10153387414857742-1418727850-n-Copy.jpg

FillWyI3OSIsIjc5Il0-12721700-10153387414857742-1418727850-n-Copy.jpg

1562 ms

FillWyIxMzIiLCIxMzIiXQ-Brendan.jpg

FillWyIxMzIiLCIxMzIiXQ-Brendan.jpg

1705 ms

FillWyIxMDIiLCIxMDIiXQ-Brendan.jpg

FillWyIxMDIiLCIxMDIiXQ-Brendan.jpg

1679 ms

FillWyI3OSIsIjc5Il0-Brendan.jpg

FillWyI3OSIsIjc5Il0-Brendan.jpg

1722 ms

FillWyIxMzIiLCIxMzIiXQ-Lorraine.jpg

FillWyIxMzIiLCIxMzIiXQ-Lorraine.jpg

1752 ms

FillWyIxMDIiLCIxMDIiXQ-Lorraine.jpg

FillWyIxMDIiLCIxMDIiXQ-Lorraine.jpg

1780 ms

FillWyI3OSIsIjc5Il0-Lorraine.jpg

FillWyI3OSIsIjc5Il0-Lorraine.jpg

1870 ms

logo-nz-gov.gif

logo-nz-gov.gif

1901 ms

gtm.js

gtm.js

100 ms

all.js

all.js

34 ms

recieved.png

recieved.png

1939 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1845 ms

fontawesome-webfont.ttf

fontawesome-webfont.ttf

1869 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1903 ms

398 ms

conversion_async.js

conversion_async.js

31 ms

analytics.js

analytics.js

48 ms

fbds.js

fbds.js

4 ms

xd_arbiter.php

xd_arbiter.php

41 ms

xd_arbiter.php

xd_arbiter.php

63 ms

375 ms

78 ms

linkid.js

linkid.js

27 ms

collect

collect

27 ms

collect

collect

417 ms

collect

collect

283 ms

collect

collect

415 ms

411 ms

_Incapsula_Resource

_Incapsula_Resource

1321 ms

ga-audiences

ga-audiences

36 ms

like.php

like.php

83 ms

rU2ubZ6l1Q5.js

rU2ubZ6l1Q5.js

47 ms

LVx-xkvaJ0b.png

LVx-xkvaJ0b.png

31 ms

_Incapsula_Resource

_Incapsula_Resource

2 ms

print.css

print.css

221 ms

20 ms

Accessibility Review

nzblood.co.nz accessibility score

72

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-hidden="true"] elements contain focusable descendents

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

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

nzblood.co.nz 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

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

nzblood.co.nz SEO score

73

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 Nzblood.co.nz 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 Nzblood.co.nz 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

nzblood.co.nz

Open Graph description is not detected on the main page of Nz Blood. 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: