How to Use This Tool
Set Length
Generate random text online for free - enter a number between 1 and 10,000 to specify how many characters to create.
Choose Character Sets
Toggle Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), and Spaces on or off using the checkboxes. Mix and match any combination.
Click Generate
Press Generate to create random text. After the first generation, text auto-regenerates instantly when you change any option.
Copy or Download
Use Copy to copy to your clipboard, Download to save as a .txt file, or Clear to reset the output.
Random Text Generator FAQ - Frequently Asked Questions
Is my generated text uploaded to a server?
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No. This tool runs 100% in your browser. All random text is generated locally on your device. Nothing is sent to any server.
Is the randomness cryptographically secure?
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Yes. The tool uses your browser's built-in cryptographic random number generator, which provides high-quality randomness suitable for security-sensitive applications.
What character sets are available?
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Four sets: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), and Spaces. You can mix and match any combination. If all are unchecked, it defaults to lowercase.
What is the maximum length?
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You can generate up to 10,000 characters at once. The minimum is 1 character.
Does it auto-regenerate when I change settings?
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Yes. After your first click on Generate, any change to the length or character set checkboxes automatically regenerates the text instantly.
Can I use this for password generation?
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The randomness quality is suitable for passwords, but this is not a dedicated password manager. Enable Uppercase, Lowercase, and Numbers for strong password-like strings.
What happens if I refresh the page?
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Your length, checkbox preferences, and generated output are all saved to your browser's local storage. Refreshing restores everything. Click Clear to remove stored data.
Why does it default to lowercase when nothing is checked?
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To ensure output is always produced. If all four character set checkboxes are unchecked, the tool falls back to lowercase letters (a-z) so you always get a result.
What Is a Random Text Generator?
A random text generator creates random strings from character sets you choose. Unlike Lorem Ipsum (which produces readable Latin placeholder text), this tool generates truly random characters - ideal for testing, sample data, and stress-testing text inputs.
This free online tool uses cryptographically secure randomness built into your browser, providing high-quality random output. It runs 100% in your browser - no data is sent to any server.
Random Text Generator Features
Secure Randomness
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This tool uses your browser's built-in cryptographic random number generator instead of basic pseudo-random functions. This provides high-quality randomness suitable for security-sensitive applications.
Four Character Sets
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Mix and match uppercase letters (A-Z), lowercase letters (a-z), digits (0-9), and spaces. If all checkboxes are unchecked, the tool defaults to lowercase letters to ensure output is always produced.
Auto-Regeneration
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After your first click on Generate, any change to the length or character set options automatically regenerates the text. This gives you instant feedback as you adjust settings.
Persistent Settings
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Your length, checkbox preferences, and generated output are all saved to local storage. When you return to this tool, everything is restored automatically.
Who Needs a Random Text Generator?
Web Developers
Generate test data, seed databases, stress-test input fields, or create random identifiers during development and debugging.
Security Professionals
Create strong random passwords, tokens, nonces, and API keys using cryptographically secure randomness.
QA Engineers
Test form validation, character limits, edge cases, and input handling with random strings of varying lengths and character sets.
Mobile Developers
Generate test strings for push notification limits, in-app text fields, and device-specific character rendering tests.
UI/UX Designers
Fill mockups with random characters to test how layouts handle unpredictable, non-readable content and overflow.
Students
Generate sample data for programming assignments, statistics exercises, probability experiments, and cryptography coursework.
Data Scientists
Create random strings for Monte Carlo simulations, data masking, anonymization testing, and synthetic dataset generation.
Database Administrators
Generate random test data for load testing, stress testing, and performance benchmarking database systems.
DevOps Engineers
Create random strings for configuration testing, environment variable placeholders, and deployment verification.
Game Developers
Generate random identifiers for game objects, test randomized content systems, and create placeholder strings for UI.
Penetration Testers
Generate fuzz testing input strings to probe application boundaries, input validation, and buffer handling.
API Developers
Create random payload data for testing request validation, response handling, and error management in endpoints.
Technical Writers
Generate example random strings for documentation about input validation, character limits, and data formatting.
Data Engineers
Create random test data for pipeline testing, ETL validation, and data quality rule verification.
Automation Engineers
Generate unique random identifiers for test runs, parallel execution keys, and temporary resource names.
Researchers
Create randomized data for experiments, survey placeholders, and controlled variable generation in studies.
Educators
Generate random strings for teaching randomness concepts, probability, character encoding, and data types.
Freelance Developers
Quickly generate test data and placeholder strings for client projects without writing custom generation scripts.
System Administrators
Create random strings for temporary passwords, session tokens, and configuration placeholders during setup.
Product Managers
Generate sample data for demos, prototypes, and proof-of-concept presentations to stakeholders.
Compliance Testers
Generate random input for testing data handling policies, character encoding compliance, and input sanitization.
Content Testers
Fill CMS fields with random characters to test content length limits, text overflow, and rendering edge cases.
Network Engineers
Generate random strings for testing packet payloads, protocol compliance, and network equipment handling.
Everyone
Generate random text instantly on any device - set the length, choose character sets, click Generate, and copy.
Character Sets Reference
| Character Set | Characters | Count |
|---|---|---|
| Uppercase | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | 26 |
| Lowercase | a b c d e f g h i j k l m n o p q r s t u v w x y z | 26 |
| Numbers | 0 1 2 3 4 5 6 7 8 9 | 10 |
| Spaces | (space character) | 1 |
| All combined | Uppercase + Lowercase + Numbers + Spaces | 63 |
Tips for Generating Random Text
Use all character sets for passwords
Enable Uppercase, Lowercase, Numbers, and disable Spaces for strong password-like strings with maximum entropy.
Disable Spaces for identifiers
Turn off Spaces when generating tokens, IDs, or filenames that cannot contain whitespace.
Test with large lengths
Generate 5,000-10,000 characters to stress-test textarea rendering, scroll performance, and memory usage in your apps.
Auto-regeneration saves clicks
After your first Generate, just change any option and the text updates instantly - no need to click Generate again.
Not a password manager
While this uses secure randomness, treat generated strings as temporary. Use a dedicated password manager for storing credentials.
Combine with other tools
Generate random text here, then use our Word Counter or Character Counter to verify the output length matches your expectations.
Privacy & Security
This tool runs 100% in your browser. All random text is generated locally on your device - nothing is sent to any server. Your settings are saved in local storage for convenience.
Use the Clear button to remove generated text at any time. No cookies are used, no analytics track your output, and no third-party services are involved.