🚀 Prisma Schema Diff

Compare Prisma Schemas Without the CLI

Paste two Prisma schema files and get an instant visual diff. See models, fields, relations, and indexes that changed — then generate the migration SQL. No npx prisma required.

Diff a Prisma Schema → 📋 Migration Checklist

How it works

SchemaLens parses your Prisma schema, compares it against another version, and shows you exactly what changed — just like prisma migrate diff, but in your browser with a visual UI.

📋 Model Diff

See which models were added, removed, or renamed. Catch accidental model deletions before they drop tables.

🔤 Field Changes

Spot type changes, optional vs required changes, default value updates, and attribute modifications at a glance.

🔗 Relation Detection

Visualize added or removed @relation fields and foreign key constraints that affect your data integrity.

📊 Index & Unique

Compare @index, @unique, and @@index declarations. Missing indexes can kill query performance.

📝 Generate SQL

Export migration scripts in PostgreSQL, MySQL, or SQLite dialects — ready to run in your migration tool.

🔗 Shareable Links

Share a diff URL with your team or paste it in a PR review. No screenshots, no copy-paste needed.

SchemaLens vs Prisma Migrate Diff

Both tools compare schemas. SchemaLens adds a visual layer and works without installing anything.

Feature	SchemaLens	prisma migrate diff	Prisma Studio
Browser-based (no install)	✅ Yes	❌ CLI only	❌ CLI + local DB
Visual diff UI	✅ Yes	❌ Text output	❌ No diff
Compare two arbitrary schemas	✅ Paste any two	✅ Yes	❌ No
Multi-dialect SQL output	✅ 5 dialects	✅ Configurable	❌ No
Shareable diff URLs	✅ Yes	❌ No	❌ No
Breaking change warnings	✅ Yes	❌ No	❌ No
ORM export (Prisma → SQL)	✅ Yes	✅ Yes	❌ No
View/edit live data	❌ No	❌ No	✅ Yes

When to use SchemaLens with Prisma

SchemaLens complements your Prisma workflow. Use it when you need speed, shareability, or a visual review layer.

🔍

Code Reviews

Paste the before/after schema into SchemaLens and drop the shareable link in your PR. Reviewers see exactly what changed without running prisma migrate diff locally.

🏭

Staging vs Production Checks

Export your staging and production schemas, paste them both, and verify the diff before promoting to prod. Catch drift that Prisma Migrate didn't account for.

👥

Team Collaboration

Not everyone on your team has Prisma installed or knows CLI flags. SchemaLens lets designers, PMs, and junior devs review schema changes in a familiar visual interface.

🔀

Cross-Dialect Migrations

Moving from PostgreSQL to MySQL? SchemaLens shows you the semantic differences and generates the target dialect's migration SQL — something Prisma Migrate can't do across databases.

Works with your Prisma workflow

SchemaLens is not a replacement for Prisma Migrate. It's a visual companion for the moments when you need to see the diff, share it, or review it quickly.

1️⃣ Export your schema

Run npx prisma migrate diff or copy your schema.prisma file. Paste it into SchemaLens.

2️⃣ Paste the target schema

Paste the older (or newer) version you want to compare against. SchemaLens parses both automatically.

3️⃣ Review the diff

Visual highlights show added models, removed fields, type changes, and index modifications. Breaking changes are flagged in red.

4️⃣ Generate & share

Export migration SQL in your target dialect, or copy a shareable link to paste in Slack, Jira, or your PR description.