Start from the rendered output, not the browser
The single most useful habit in PWA SEO is judging every template by what exists in the output search engines evaluate, rather than by what appears in your browser. Those two things are the same on a traditional site and frequently different in a Progressive Web App.
Every practice below follows from that: if the important content, links and metadata are present in the rendered output for every template, most PWA SEO problems never occur.
Practices that prevent most problems
- Decide rendering strategy per template, deliberately, before building
- Server-render or pre-render content that needs to rank
- Give every indexable view a unique, server-addressable URL
- Express navigation as real links, not click handlers alone
- Return correct status codes, including genuine 404s for missing pages
- Set titles, descriptions and canonicals so they exist in the rendered output
- Keep one canonical URL per piece of content and consolidate variants
- Make sure the service worker never changes what non-browser clients receive
- Keep scripts and resources required for rendering crawlable
- Emit structured data in a form that survives rendering
Treat SEO behavior as testable
Because PWA SEO depends on application code, it can regress in any release. The practices that hold over time are the ones written into the development process: acceptance criteria that mention rendered output, a pre-release check on SEO-critical templates, and validation in production after deploy.
That turns PWA SEO from an occasional audit into a property of the build — which is the only version that survives an active roadmap.