Content Standards (MoSCoW)

In principle, all pertinent page content - including server-rendered JavaScript pages - will adhere to the same guidelines as traditional "flat HTML" pages and CMS templates.

Must

• Use valid, well-structured, semantic HTML5
• Have all key content present in the response markup before the browser processes the page
• Each page/view of significant content has a canonical, meaningful URL (without params)
• Implement standard anchor links (<a href="...">) for connections to other content
• Respect our latest matrix of supported browsers

For reference, Elephate offers a comprehensive guide to server-side rendered JavaScript SEO best practices, which should be observed and adhered to as much as possible.

Should

• Load as fast as possible
• Aim for a baseline Lighthouse score of 50/100
• Make effective use of appropriate ARIA/HTML5 ‘roles’ to enrich the semantic user experience

Could

• Aim for a Lighthouse score of 90+

Would

• Be easy and reliable to cache properly, and flush/update reliably
• Provide a seamless offline experience for non-volatile pages (e.g. menus, restaurant pages)