Access digitalpreservation.natlib.govt.nz.

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value160 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

digitalpreservation.natlib.govt.nz

407 ms

_Incapsula_Resource

7 ms

_Incapsula_Resource

5 ms

_Incapsula_Resource

4 ms

css2

46 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 44% of them (4 requests) were addressed to the original Digitalpreservation.natlib.govt.nz, 44% (4 requests) were made to Fonts.gstatic.com and 11% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (407 ms) belongs to the original domain Digitalpreservation.natlib.govt.nz.

Content Size

19.9 kB

After Optimization

19.4 kB

In fact, the total size of Digitalpreservation.natlib.govt.nz main page is 19.9 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. Javascripts take 19.0 kB which makes up the majority of the site volume.

HTML Optimization

-41%

Potential reduce by 369 B

Original 890 B
After minification 890 B
After compression 521 B

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 369 B or 41% of the original size.

JavaScript Optimization

-1%

Potential reduce by 187 B

Original 19.0 kB
After minification 19.0 kB
After compression 18.9 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. This website has mostly compressed JavaScripts.

Requests Now

After Optimization

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Digitalpreservation Natlib. According to our analytics all requests are already optimized.

Accessibility Issues

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.

High

[aria-*] attributes do not match their roles

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

N/A
Language Claimed

N/A
Encoding

N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Digitalpreservation.natlib.govt.nz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Digitalpreservation.natlib.govt.nz main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Digitalpreservation Natlib. 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: