Build a programmatic SEO page template

One route, hundreds of pages: a data-driven comparison template with clean internal linking and real metadata.

Create a programmatic SEO template for [TOPIC] comparison pages.

ROUTE
/compare/:slug where slug looks like "tool-a-vs-tool-b".

DATA
A typed array in one file. Each entry: slug, both item names, excerpt, verdict, a table of 6 comparison metrics, 3 body sections, updated date. Seed 8 realistic entries.

PAGE STRUCTURE
1. Breadcrumb.
2. H1 with both names, updated date, reading time.
3. "The short answer" — two decision cards, one per option.
4. Comparison table built from the metrics array.
5. Three body sections rendered from the data.
6. Verdict block.
7. Related comparisons: 3 links sharing an item with this page.

SEO
- Unique title and meta description per page, generated from the data.
- One H1 only, logical heading order.
- Internal links to both item detail pages.
- An index page at /compare listing everything.

ACCEPTANCE CRITERIA
- Adding a new entry to the data file creates a working page with no other change.
- An unknown slug renders a proper 404, not a blank screen.