What Is PostgreSQL?
DatabasePostgreSQL is an open-source relational database known for standards compliance, extensibility (PostGIS, pgvector, full-text search) and reliability. It is the database behind Supabase, Neon, Vercel Postgres and most Prisma- and Django-based applications, so it sits under a large share of modern web apps even though it is never visible in the browser directly.
Detect PostgreSQL on any website:
Why PostgreSQL Matters
The database rarely shows itself in the browser, but the services wrapped around it (hosted backends, auth layers, REST gateways) do. Recognising PostgreSQL behind a site helps when you are evaluating a vendor's architecture, planning a migration, or checking whether a product's "serverless" claims hold up. We've fingerprinted PostgreSQL on 1 live sites in our database, so the answers here are grounded in real scan data — not marketing copy.
Does PostgreSQL Mean a Site Was Built With AI?
PostgreSQL on its own does not prove AI involvement.
Standard modern web tooling — its presence alone doesn't indicate AI-assisted development.
How this feeds the score: builder fingerprints, bundle artifacts and AI-tool traces are weighed separately from stack context like frameworks, libraries and hosting. The full breakdown is on How scores work.
How Websites Using PostgreSQL Work
- ACID-compliant relational storage with rich JSONB support
- Extensions such as PostGIS, pgvector and pg_trgm
- Managed offerings: Supabase, Neon, PlanetScale Postgres, AWS RDS, Google Cloud SQL
- Row-level security used by Supabase to expose tables directly to browsers
Best Practices When Working With PostgreSQL
Based on patterns in our scan dataset and the detection evidence tiers.
- →Start by running a PostgreSQL detection scan on any URL you're evaluating — the 80+ signal engine returns a confidence score plus the exact markers it matched, which beats reading view-source by hand.
- →Cross-check the result against the full detection evidence in /how-scores-work — confidence tiers tell you whether a match is strong (headers + scripts) or circumstantial (a single HTML pattern).
How we detect PostgreSQL — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How Our Detector Identifies PostgreSQL
Our scanner analyzes multiple layers of a website's technical fingerprint to detect PostgreSQL usage.
- Hosted-Postgres providers detected on the same site (Supabase, Neon, PlanetScale)
- PostgREST-style REST endpoints or PostgreSQL error strings in page responses
Websites Built With PostgreSQL
Real sites detected by our scanner
Frequently Asked Questions About PostgreSQL
What is PostgreSQL?+
PostgreSQL is an open-source relational database known for standards compliance, extensibility (PostGIS, pgvector, full-text search) and reliability. It is the database behind Supabase, Neon, Vercel Postgres and most Prisma- and Django-based applications, so it sits under a large share of modern web apps even though it is never visible in the browser directly.
Does PostgreSQL mean a website was built with AI?+
PostgreSQL on its own does not prove AI involvement. Standard modern web tooling — its presence alone doesn't indicate AI-assisted development.
Why does PostgreSQL matter?+
The database rarely shows itself in the browser, but the services wrapped around it (hosted backends, auth layers, REST gateways) do. Recognising PostgreSQL behind a site helps when you are evaluating a vendor's architecture, planning a migration, or checking whether a product's "serverless" claims hold up. We've fingerprinted PostgreSQL on 1 live sites in our database, so the answers here are grounded in real scan data — not marketing copy.
How do we detect PostgreSQL?+
Our scanner checks for these signals: Hosted-Postgres providers detected on the same site (Supabase, Neon, PlanetScale); PostgREST-style REST endpoints or PostgreSQL error strings in page responses. Each match contributes to a confidence score, and the full evidence tiers are documented at /how-scores-work.
How many websites using PostgreSQL are in the database?+
We've fingerprinted 1+ live sites built with PostgreSQL across our scan dataset. The list refreshes as new scans come in.
What are the typical characteristics of a PostgreSQL website?+
ACID-compliant relational storage with rich JSONB support. Extensions such as PostGIS, pgvector and pg_trgm. Managed offerings: Supabase, Neon, PlanetScale Postgres, AWS RDS, Google Cloud SQL. Row-level security used by Supabase to expose tables directly to browsers
Related Tools & Technologies
Other databases and backends we detect
Ready to put PostgreSQL detection to work?
You now know what PostgreSQL is, why it matters, how to spot it, and where the detection signals come from. The next step is using that knowledge on a real URL — yours, a competitor's, or a prospect's.