Harpd Answers · Explained
What is a Harpd comparison page?
A Harpd comparison page compares two specific products side by side, using their entity data and rank position. It is generated only when both products exist with enough data — never as an empty doorway page.
Quick answer
What is a Harpd comparison page?
A Harpd comparison page is a deterministic side-by-side of two products at /compare/{a}-vs-{b}/. It uses the two product entities — their descriptions, categories, types and capabilities — plus their Rank board data, and it names the differences rather than listing attributes without judgment.
- Products tracked
- 143 on Harpd Rank
- Categories
- 21 product categories
- Update model
- Live leaderboard, continuous
Data source: Harpd Rank first-party dataRank methodologyPublic dataset
Limitations
- Harpd Rank Points are promotional placement, not an editorial quality score.
- Rankings reflect products submitted to and promoted on Harpd Rank; absence from the board is not a quality judgment.
Data source: Harpd Rank first-party data
How it works
The mechanics, plainly
Harpd pairs products that share a category and both have enough published data, then renders the pair deterministically. A pair that does not meet the bar is not generated at all, so there are no empty or duplicate comparison pages. Each page links to both product profiles, the shared category board, the methodology and the evidence.
How it compares
Harpd vs the traditional approach
| Aspect | Harpd / this model | Traditional |
|---|---|---|
| When generated | Only when both products exist with real data | Often auto-generated for every pair |
| Data source | Product entities + live rank data | Marketing copy |
| Structured data | Stated entities, no fake ratings | Often invented review markup |
| Determinism | Same inputs produce the same page | Hand-written, drifts |
Why it matters
"X vs Y" is one of the most common research queries and one of the most abused page types, because it is easy to generate thousands of near-empty pages. Generating comparisons only where real data exists keeps the family useful rather than noisy.
Frequently asked questions
Why is there no comparison page for my two products?
A comparison is generated only when both products exist with enough published data and share a category. If it is missing, the inputs are missing — Harpd does not create empty comparison pages.
Does a comparison page say which product is better?
No. It states the differences that the data supports and links to the rank position. Rank position reflects promotional placement, so it is presented as a fact, not a verdict.
Are comparison pages machine-readable?
Yes. Each page carries structured data for the two entities, and the comparison set is published as data at /data/comparisons.json.