PostgresCompare is a capable desktop tool for PostgreSQL schema comparison with 40+ object types and schema history tracking. SchemaLens is a free, zero-setup browser tool that works across 6 SQL dialects. Here's how they compare.
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How SchemaLens stacks up against PostgresCompare.
| Feature | SchemaLens | PostgresCompare |
|---|---|---|
| Pricing | Free tier + $39 Lifetime Pro | 30-day trial → Paid license |
| Setup time | ✅ Instant — open browser | ⚠️ Download + install desktop app |
| Visual diff | ✅ Rich HTML with color coding | ✅ Desktop GUI with line highlighting |
| Runs in browser | ✅ Yes — zero install | ❌ Desktop app only |
| PostgreSQL | ✅ Full support | ✅ Deep support (40+ object types) |
| MySQL / MariaDB | ✅ Full support | ❌ Not supported |
| SQLite | ✅ Full support | ❌ Not supported |
| SQL Server | ✅ Full support | ❌ Not supported |
| Oracle | ✅ Full support | ❌ Not supported |
| Needs live DB connection | ❌ No — paste SQL dumps | ⚠️ Yes — or SQL files / pg_dump |
| Shareable links | ✅ URL + public links | ❌ No |
| Export formats | SQL, Markdown, PDF, JSON | SQL deployment script |
| Breaking change detection | ✅ Built-in with warnings | ✅ Destructive change warnings |
| Schema history tracking | ❌ Not built-in | ✅ Swimlane + per-object timeline |
| CI/CD integration | ✅ GitHub + GitLab + Bitbucket | ❌ No CI/CD support |
| Data privacy | ✅ Schemas stay in browser | ✅ 100% local processing |
| CLI available | ✅ schemalens-cli (npm) | ❌ Desktop GUI only |
| VS Code extension | ✅ Yes | ❌ No |
| Offline capable | ✅ Yes — PWA | ✅ Yes — desktop app |
| Best for | Developers, code review, quick diffs | DBAs, deep PostgreSQL audits |
PostgresCompare requires downloading and installing a desktop application on your machine. SchemaLens opens in any browser instantly. Paste two SQL dumps and get a color-coded diff in under 3 seconds — no installer, no updates, no OS compatibility checks.
PostgresCompare offers a 30-day trial but requires a paid license for ongoing use. SchemaLens is free for 15 tables and just $39 once for lifetime Pro access. No recurring fees, no trial countdown, no license management.
PostgresCompare is PostgreSQL-only. SchemaLens handles PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, and Oracle — all in one interface. Ideal for polyglot teams, migration projects, and consultants who work across different database engines.
Generate a shareable URL for any diff and send it via Slack, email, or paste it into a GitHub PR. Recipients don't need to install anything to view the exact same visual output. PostgresCompare comparisons stay on your local machine.
SchemaLens integrates where developers already work: browser, VS Code extension, Chrome extension for GitHub PRs, npm CLI, and GitHub Actions. PostgresCompare is a standalone desktop app that lives outside your development workflow.
Export diffs as SQL migrations, Markdown for PR comments, branded PDF reports for Jira/Linear, or JSON for automation. PostgresCompare exports SQL deployment scripts. When you need to communicate schema changes to stakeholders, SchemaLens gives you more options.
PostgresCompare compares over 40 PostgreSQL object types — not just tables and columns, but functions, procedures, triggers, types, domains, extensions, policies, and more. SchemaLens focuses on the most common schema objects for rapid diffing.
Every comparison is saved automatically with a swimlane view grouped by change category and a per-object history timeline. This makes it easy to catch drift and regressions over time. SchemaLens has no built-in history — it's designed for on-demand comparison.
PostgresCompare generates dependency-ordered SQL scripts and can execute them directly against your target database with pre/post deploy hooks. SchemaLens generates migration scripts but does not execute them — it's a planning and review tool.
As a native desktop application, PostgresCompare can handle very large schemas with responsive UI performance. SchemaLens runs in the browser and is optimized for schemas up to thousands of objects — though extremely large dumps may take longer to parse.
Join 10,000+ developers who use SchemaLens to catch schema mistakes before they reach production. Free for 15 tables. Pro is $39 lifetime.
Open SchemaLens FreeNo signup · No credit card · Schemas stay in your browser