Instantly generate secure PostgreSQL Row Level Security (RLS) policies. A free, browser-based SQL generator for database authentication and authorization.
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Technical Specification: PostgreSQL RLS Policy Generator
Overview
A high-performance, browser-based utility for database engineers and web developers. This tool enables users to define, configure, and generate standard PostgreSQL Row Level Security (RLS) policy SQL syntax without the need for manual boilerplate coding.
Core Features
- Configurable Policy Builder: Interactive form controls to select Operation (SELECT, INSERT, UPDATE, DELETE), Target Role (authenticated, anon, service_role), and Custom Logic (e.g.,
auth.uid() = user_id). - Real-time Syntax Generation: Instant updating of the SQL code block as users change settings.
- Syntax Highlighting: Integrated code preview for better readability.
- One-Click Copy: Secure clipboard functionality to copy generated SQL.
- Multiple Policy Queue: Ability to build multiple policies and copy them as a batch.
UI/UX Layout
- Header: Clean, centered title with a descriptive tagline.
- Main Tool Area (Split View):
- Left Panel (Configuration): Input fields (Text inputs for Table Name, Select dropdowns for Actions, Checkboxes for Role selection, Textarea for custom WHERE conditions).
- Right Panel (Preview): A scrollable code-display window with a "Copy to Clipboard" button in the top-right corner.
- Modals: Custom built-in modal for "Success/Copied" notifications (no browser default
alert).
Aesthetic Directive
- Color Palette: High-contrast, clean professional palette: #FFFFFF (Background), #F8FAFC (Panel backgrounds), #2563EB (Primary Action Blue), #334155 (Typography), #E2E8F0 (Borders).
- Typography: Sans-serif, geometric typeface (e.g., Inter or system-ui).
- Visuals: Soft shadows (
box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1)) for panels, rounded corners (border-radius: 8px) for all containers, and subtle CSS transitions (all 0.2s ease-in-out) on button hover states.
Technical Implementation Constraints
- Single File: The entire application must reside in one
.htmlfile containing embedded CSS and JS. - State Management: Use Vanilla JS variables for application state. Strictly no
localStorage,sessionStorage, or IndexedDB. - Browser Compatibility: Must be fully responsive, scaling from desktop down to 320px width for mobile users.
- Security: Ensure all external libraries (like syntax highlighters) are loaded from reputable, secure CDNs. No sensitive logic should ever leave the client side.
- Performance: Focus on instant updates; minimize DOM manipulation by using reactive-like updates to the preview container.
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Frequently Asked Questions
Everything you need to know about using this application.
What is PostgreSQL Row Level Security (RLS)?
PostgreSQL Row Level Security (RLS) is a database-level security feature that restricts access to rows in a table based on user-defined policies. By implementing RLS, you ensure that database operations like SELECT, INSERT, UPDATE, and DELETE are restricted to specific authorized users, preventing unauthorized data exposure. This feature is essential for multi-tenant applications where different users must only access their own data. By writing SQL policies that evaluate the current user's session variables or identity, you create a robust security layer that functions independently of your application code.
How does this RLS Policy Generator work?
This tool provides a user-friendly interface to construct PostgreSQL RLS policies without manually writing complex SQL syntax. You simply select the table name, the operation (such as SELECT or INSERT), the target role, and the logic condition (like matching a user ID), and the generator creates the standard SQL code for you. Because this tool runs entirely in your browser using client-side JavaScript, no data is sent to a server or stored. You can quickly generate, copy, and paste valid SQL commands directly into your database migration files or SQL editor with full confidence in your privacy.
Is this tool safe to use with my database credentials?
Yes, this tool is completely safe because it never requests, stores, or transmits your database credentials, API keys, or connection strings. All operations occur locally within your browser's memory, ensuring that your sensitive information remains private and secure at all times. Since this application does not use server-side processing or databases to store your inputs, there is zero risk of data leakage. You can use it as a reference tool while you work, knowing that your workflow remains entirely isolated from our hosting environment.
Can I use the generated SQL policies in production?
The SQL policies generated by this tool follow standard PostgreSQL syntax and are designed for production use. They provide a foundational structure that you can copy into your migration scripts or database management consoles to secure your sensitive tables immediately. While the generator provides syntactically correct code, we always recommend that you review the output against your specific database schema and security requirements. Use these generated policies as a starting point to test and refine your authorization logic for high-traffic or high-security production environments.
