b'Webwaves WebwavesIan James ASEG Webmaster webmaster@aseg.org.auWeb page auditing using LighthouseRecently the ASEG website was moved to a new server provided by AWS. This new server offers increased performance for a better browsing experience, coupledFigure 1.Audits screen.with more comprehensive monitoring and security. There are tools on thePerformancehow long does this web that can be used to assess thepage take to show content and performance of websites, and today webecome usable?will look at one that is easy to use andProgressive web appdoes this page available to the 64.92% of users who usemeet the standard of a Progressive Web Chrome as their main browser1. SimilarApp?tests can also be run by using utilitiesBest practicesdoes this page follow such as https://webpagetest.org/. best practices for web development?The Google Chrome web browser comesAccessibilityis this page usableFigure 3.Results from the SEG home page.bundled with a comprehensive and openby people with disabilities or source utility for analysing and improvingimpairments?the performance of web pages. This tool,SEOis this page optimised for searchScrolling down through the results called Lighthouse is also available onengine results ranking? shows a breakdown of metrics, Github at the following location: https:// Additionally, you can select whether theopportunities and diagnostics for each github.com/GoogleChrome/lighthouse web page is being analysed as a desktopof the categories. These provide details or mobile site and simulate throttling ofof improvements that can be made, as The Lighthouse utility is an automatedCPU and network speed. shown in Figure 4, for the performance procedure which takes an input URLtab of the ASEG website.and runs a series of audits on the localNow select Run Audits and wait less machine to generate information on thethan a minute for the results to becomeHere, the new server is providing a performance of a web page in a series ofavailable. After completing the audit,great level of speed, helped along by categories. you will receive a score in each of thea fast internet connection. Detailed categories selected. Figures 2 and 3 showunder the opportunities tab is the the scores from tests on the ASEG andsuggestion to serve images in next-Running an audit SEG websites. gen formats to be web friendly. A lot From the Chrome browser, openof the images on the ASEG website are DevTools by pressing F12 and select thesourced from the photo competitions, Audits tab (Figure 1) and have not yet been reformatted to suit the web.There are various categories that can be set for the audit. These include: The Accessibility score is the lowest score on the ASEG website and reflects the ability of users with an impairment or disability to access the website. It is 1https://gs.statcounter.com/browser-market- worth noting that this includes people share#monthly-201910-201910-bar Figure 2.Results from the ASEG home page. that do not identify as having a disability DECEMBER 2019 PREVIEW 50'