Generate Millions of Rows of Mock Data in Seconds
Stop writing INSERT scripts manually. MockBlast generates production-ready seed data, test data, and dummy data for PostgreSQL, MySQL, MongoDB, SQLite, JSON, and CSV. Get 10,000 rows for free—10x more than Mockaroo. Import your SQL schema or build visually, then download instantly. Perfect for database seeding, performance testing, and UI development.
Generate Mock Data for PostgreSQL, MySQL, MongoDB & More
Stop writing Python scripts or manual INSERT statements. MockBlast generates production-ready seed data, test data, and dummy data for PostgreSQL, MySQL, SQLite, and MongoDB. Import your SQL schema or build visually—download millions of rows in seconds.
Export Formats
- SQL (PostgreSQL, MySQL, SQLite)
- MongoDB
- JSON
- CSV
Key Features
- SQL Schema Import
- Foreign Keys & Enums
- UUIDs & ObjectIds
- Streaming Downloads
Use Cases
- Database Seeding
- Performance Testing
- UI Development
- API Testing
Cloud Powered Streaming
We handle the compute. Generate 1M+ rows without freezing your browser. Data streams directly to your download.
Privacy First
We do not store your generated data or schemas. Everything is streamed directly to you and discarded immediately.
Relational Integrity
Smart foreign key generation via custom lists ensures your data makes sense across tables. Perfect for multi-table databases.
SQL Schema Import
Paste your CREATE TABLE statements and we parse everything automatically. Supports PostgreSQL, MySQL, SQLite, and MongoDB.
Stop renting your mock data.
The old ways are slow, expensive, or leak your schema. MockBlast is the local-first successor to Mockaroo and Python scripts.
Legacy SaaS Generators
Like Mockaroo™ or Generatedata
- Expensive monthly subscriptions ($500+/yr)
- Slow UI, outdated 2010 design
- Cloud-storage risks for your schema
MockBlast
The Developer's Choice
- One-time payment (Lifetime License) - No subscriptions
- Smart SQL Import - Paste CREATE TABLE statements
- Zero-Trust: Data stays private, never stored
- Foreign Key support via Custom Lists (Enums & FKs)
- Multi-table generation for relational databases
- MongoDB support with ObjectId generation
DIY Scripts
Python Faker, Node.js scripts
- Hours spent writing/debugging scripts
- SQL syntax errors on insertion
- Hard to share with non-technical team
Built for Developers, by Developers
SQL Syntax Native
Most generators fail at escaping single quotes (O'Reilly vs O''Reilly). MockBlast understands PostgreSQL, MySQL, and SQLite syntax natively, so your INSERT statements run on the first try.
Privacy First
Unlike Mockaroo or ChatGPT, we don't train AI models on your schema. Your table structure is parsed locally in your browser (or ephemeral server memory) and discarded instantly.
Simple, One-Time Pricing.
Stop paying monthly subscriptions for fake data.
Perfect for small prototypes and testing.
- 10,000 rows per generation (10x more than Mockaroo)
- SQL, JSON, CSV & MongoDB formats
- Multi-table support via SQL import
- All data types & custom lists
- Unlimited rows (1M+)
For serious developers and teams.
- Unlimited rows & tables
- Priority Support
- Commercial Use
Frequently Asked Questions
- Is this a subscription?
- No. You pay once, you own it forever. We hate subscriptions for simple tools too.
- How do I generate fake data for PostgreSQL?
- MockBlast supports PostgreSQL natively. Simply paste your CREATE TABLE statement or use the visual builder to define your schema. Then download production-ready SQL INSERT statements that work perfectly with PostgreSQL.
- Can I generate test data for MongoDB?
- Yes! MockBlast fully supports MongoDB. You can generate MongoDB seed data in JavaScript format, including ObjectId generation for MongoDB documents. Just select 'MongoDB (JS Script)' as your output format.
- How do I create seed data for MySQL?
- MockBlast generates MySQL-compatible SQL INSERT statements. Import your MySQL CREATE TABLE schema or build it visually, then download ready-to-use seed data that works with MySQL databases.
- What's the difference between MockBlast and Mockaroo?
- MockBlast offers 10,000 free rows (10x more than Mockaroo's 1,000), supports MongoDB, has multi-table generation, and uses a one-time payment model instead of expensive monthly subscriptions. Plus, your data stays private—we don't store your schemas.
- How do I generate foreign key relationships?
- Use Custom Lists to define foreign key values. For example, if you have a user_id foreign key, create a custom list with user IDs from your users table. MockBlast will randomly select from these values to maintain referential integrity.
- Can I generate password hashes?
- Yes! MockBlast generates valid bcrypt password hashes for the plaintext password 'password'. This means you can log into any generated user account using the password 'password' for testing purposes.
- Does my data go to your server?
- We generate data on our server and stream it directly to you. Once you receive it, you are the only one who has it. We don't store your generated data or use it for training AI models.
- Do you save our schemas?
- It's your preference whether you want to save your schemas or not. You can choose to save them for quick access later, or keep them private. We never use your schema data for any purpose other than generating your requested data.
- Can I use this for client work?
- Yes, the license covers commercial usage. You can use the generated data for any number of client projects, commercial applications, or internal tools.
- What databases are supported?
- MockBlast supports PostgreSQL, MySQL, SQLite, MongoDB, and generic JSON/CSV output. You can generate seed data, test data, or dummy data for any of these databases with proper syntax and formatting.
- How do I generate millions of rows?
- Free users can generate up to 10,000 rows per file. Pro users can generate up to 1,000,000 rows per file. All data is streamed directly to your browser, so you can download large files without memory issues.
- Can I import my existing SQL schema?
- Yes! MockBlast can parse CREATE TABLE statements from PostgreSQL, MySQL, and SQLite. Just paste your SQL schema and we'll automatically extract column names, data types, and constraints to generate matching test data.
- What data types can I generate?
- MockBlast supports UUIDs, ObjectIds, names, emails, phone numbers, addresses, dates, timestamps, booleans, numbers, floats, passwords (bcrypt), API keys, avatars, URLs, company names, long text, and custom lists for enums or foreign keys.