Website Criteria Testing

  1. Speed

  2. SEO

  3. UX

  4. CRO

  5. MobileAccessibility

    1. Web page speed tools

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An example of a web page speed test on WebPageTest

A slow website can drive users away and hurt search rankings. Web page speed tools aren’t going to fix your slow site on their own, but they will measure page speed and show you what’s slowing it down. You’ll be able to pinpoint how to improve page load times by following recommendations like:

  • Reducing and compressing HTML, CSS, JavaScript, and images
  • Caching content
  • Using faster-hosting servers
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Speed improvement suggestions from Google PageSpeed Insights

2. SEO tools

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A keyword analysis dashboard from Ahrefs

SEO (search engine optimization) can help you get more free website traffic from search engines like Google and Bing. There are many different types of SEO tools that will help you optimize everything from the structure of your web pages to tracking how you rank for certain keywords:

  • Technical SEO tools to audit on-page SEO (like checking meta robots tags or 404 links)
  • Keyword research tools to find keyword ideas
  • Rank tracking tools to measure and compare search traffic, and tell you how your site ranks in the SERPs for target keywords
  • Content optimization tools to optimize for target keywords
  • Backlink analysis tools to check which pages link to your site (or to competitors)
  • Video SEO tools to optimize your videos to rank highly on sites like YouTube

You can use specialist SEO tools that only do one thing (for example, Screaming Frog is a dedicated technical SEO tool), and all-in-one SEO tools, like Ahrefs, which will do a little of everything.

3. UX optimization tools

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The team at Skyscanner reviewing a Hotjar heatmap

Great UX (user experience) will keep visitors happy and reduce friction on your site, ultimately leading to better conversions and increased revenue.

UX optimization tools aren’t going to magically improve user experience, but usability testing will help you understand user behavior and diagnose problems so you can optimize pages and give people what they need to keep browsing and buying from your site.

UX tools help with each step of the page optimization journey, from spotting where users are getting stuck to conducting user research.

4. CRO tools

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An ecommerce funnel visualization on Google Analytics

When done right, CRO (conversion rate optimization) will increase the number of website visitors that become customers (or perform any desired action on your site).

There’s no single tool that will improve conversion rate, but with a combination of

you’ll get a full picture of what’s happening on your site so you can give people what they need to convert.

5. Mobile optimization tools

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A Google mobile-friendly test results page

More people browse websites on mobile than desktop, so mobile-first optimization can help you ensure that people view your site correctly on phones and tablets. Web elements like pop-ups, image-heavy pages, and tiny text can make your site difficult to navigate on mobile.

Of course, generalizations aren’t always helpful; check your analytics data to find out what percentage of your users and customers browse on mobile devices, so you know how important mobile optimization is to your business.

If you're using Google Analytics, for example, use the Audience > Mobile > Overview report:

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Google Analytics data showing high ecommerce conversion rate for mobile users

6. Accessibility tools

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A website color contrast test on CheckMyColours

An accessible website is easy for everyone to use—which is a win-win for you and your visitors: great UX for them and more happy customers for you.

Accessibility tools can show you how your landing pages look on a screen reader or to people with various impairments (for example, different types of colorblindness) and provide optimization suggestions to make your website more inclusive.

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