Install FontSwap
FontAlternatives now covers over 300 premium fonts with free alternatives. Scaling to this size while maintaining accuracy requires systems that catch errors before they reach users. Here’s what we built.
The Tier System
Not every font page gets the same depth of coverage. Our tier system allocates effort based on user demand:
Tier 1 pages are comprehensive: 6-7 alternatives with full weight matching, ~3,000 words of editorial content, brand examples, FAQ sections, and detailed comparison notes. These cover fonts with the highest search demand.
Tier 2 pages provide 2-3 alternatives with basic comparison data. They’re created faster and serve long-tail search queries. Tier 2 pages can be upgraded to Tier 1 when demand warrants the investment.
This model lets us cover a broad catalog (300+ fonts) while concentrating editorial effort where it serves the most users.
Automated Validation
Our guardrails system runs three levels of validation:
Level 1 — Content integrity: Checks that every referenced font exists, every internal link resolves, every similarity score is within valid range, and every required field is populated. This catches the most common errors: typos in font slugs, broken cross-references, and missing data.
Level 2 — Build validation: The full site builds successfully with all 3,000+ pages rendering. This catches template errors, schema violations, and data inconsistencies that Level 1 doesn’t cover.
Level 3 — E2E testing: Playwright tests verify that pages render correctly, links work, and SEO metadata is present. This catches issues that only manifest in the browser.
Bidirectional Linking
Every premium font page lists free alternatives. Every free font page lists which premium fonts it substitutes for (alternativeFor[]). This bidirectional linking must stay in sync — if we add Inter as an alternative to Die Grotesk, we must also add Die Grotesk to Inter’s alternativeFor[] array.
Our validation system checks this symmetry automatically. Any mismatch fails the build.
What Still Requires Humans
Automated checks catch structural errors but can’t validate editorial judgment. These require human review:
- Are similarity scores reasonable? (Is an 82% score justified by actual resemblance?)
- Do written descriptions accurately characterize the font?
- Are use-case recommendations honest? (Does the free alternative really work for that context?)
- Are brand examples current and accurate?
FAQ
How often do pages need updating? Fonts don’t change, but the ecosystem does. We update pages when: free alternatives release new versions, new free fonts emerge that are better matches, or premium fonts release significant updates.
What happens when you find an error? Errors caught by automated validation block deployment. Errors found by users are fixed immediately and trigger a review of related pages to check for similar issues.
Do you have a review process for new content? All new Tier 1 pages go through a research-write-validate cycle. Tier 2 pages have lighter review but must pass all automated validation checks.