Common Lengths
Common Counts
Basic Options
Advanced Options
No password to copy
Statistics
16
Length
88
Character Set
1.29e+31
Combinations
103.35
Entropy
Password Generator
Generate secure, random passwords with custom character sets and strength detection.
Password Generator - Password Length
Password Generator Tool Guide
Password Generator is a free online tool that can generate secure, random passwords with custom character sets and strength detection. Supports multiple character types (uppercase letters, lowercase letters, numbers, symbols), customizable character sets. Supports excluding similar characters (such as i, l, 1, L, o, 0, O) and ambiguous characters (such as curly brackets, square brackets, parentheses, slashes, quotes, backticks, tildes, commas, semicolons, periods, angle brackets, etc.), improving password readability and security. Supports including spaces, supports batch password generation (up to 100). Real-time display of password strength, character set size, possible combinations, entropy and other statistics. One-click copy of single or all passwords for easy use. All passwords are generated locally in the browser, not uploaded to servers, completely protecting your privacy.
Flexible character set configuration to meet different needs
Real-time strength detection and statistics
Batch generation, one-click copy, easy to use
Tool Features
Flexible Character Set Configuration and Advanced Options
Supports multiple character type configurations: uppercase letters (A to Z), lowercase letters (a to z), numbers (0 to 9), symbols (exclamation mark, at sign, hash, dollar sign, percent, caret, ampersand, asterisk, etc.). Supports exclude similar characters option: automatically excludes easily confused characters (such as i, l, 1, L, o, 0, O), improving password readability and avoiding input errors. Supports exclude ambiguous characters option: automatically excludes characters that may cause ambiguity (such as curly brackets, square brackets, parentheses, slashes, quotes, backticks, tildes, commas, semicolons, periods, angle brackets, etc.), improving password security. Supports including spaces option, increasing character set diversity. Supports custom character set: can input any character combination as password character set, fully customizing password generation rules.
Batch Generation and Strength Detection
Supports generating one password at a time, also supports batch generating multiple passwords (up to 100), suitable for scenarios requiring multiple passwords. Password length adjustable (4-1024 characters), supports quick selection of common lengths (8, 12, 16, 20, 24, 32, 48, 64). Real-time display of password strength assessment: comprehensively evaluates password strength (very weak, weak, fair, good, strong, very strong) based on password length, character variety, presence of repeated characters and common patterns, displayed in different colors. Displays password statistics: character set size, possible combinations (supports large number formatting), entropy (information entropy, measuring password randomness and security).
Convenient Copy and Operation Features
Supports one-click copy of single password or batch copy of all passwords for quick use. When generating a single password, displays single input box and copy button; when generating multiple passwords, displays list format, each password has independent copy button, also supports one-click copy all passwords. Supports clear function for quick reset of all configurations and generated passwords. Automatically regenerates passwords when configuration changes, real-time preview effect. All operations have clear visual feedback (Toast notifications), smooth user experience. Password generation process completely completed in browser locally, uses cryptographically secure random number generator, ensuring password randomness and security.
How to Use
- 1
Configure Password Length and Character Options
Set password length (4-1024 characters) in the password length slider, or directly input number or click common length buttons (8, 12, 16, 20, 24, 32, 48, 64) for quick setting. In the character options area, select character types to include: basic options (uppercase letters, lowercase letters, numbers, symbols) and advanced options (exclude similar characters, exclude ambiguous characters, include spaces). At least one character type must be selected to generate passwords. Can flexibly configure according to needs, for example, only use uppercase letters and numbers to generate simple passwords, or use all character types to generate high-strength passwords.
- 2
Generate Password and View Strength
After configuration is complete, click the "Generate" button to generate a single password, or click the "Generate Multiple" (N) button to batch generate specified number of passwords (up to 100). After generation, password list is immediately displayed, single password displays single input box, multiple passwords display list format. Real-time display of password strength assessment: comprehensively evaluates password strength (very weak, weak, fair, good, strong, very strong) based on password length, character variety, presence of repeated characters and common patterns, displayed in different colored progress bars and text. Bottom of page displays statistics: password length, character set size, possible combinations, entropy, helping understand password security.
- 3
Copy Password and Use Custom Character Set
After generating passwords, can click the "Copy" button next to a single password to copy single password, or click "Copy All" button to batch copy all passwords. Supports custom character set: input any character combination (such as 'abc123' or specific symbol combinations) in the custom character input box, click "Use Custom Character Set" button, tool will use custom character set to generate passwords and automatically disable other character options. Can use "Clear" button to quickly reset all configurations and generated passwords, start over. All passwords generated locally in browser, not uploaded to servers, completely protecting privacy.
Frequently Asked Questions
How secure are the generated passwords?
Generated passwords use browser native cryptographically secure random number generator, with good randomness and security. Password security mainly depends on: password length (longer is more secure), character set size (more character types is more secure), randomness of character set. Tool displays password strength assessment, possible combinations and entropy in real-time, helping judge password security. Recommend using passwords of at least 16 characters in length, including multiple character types (uppercase/lowercase letters, numbers, symbols) for higher security.
How many passwords can be generated?
Supports generating one password at a time, also supports batch generating multiple passwords, can simultaneously generate up to 100 passwords. When batch generating, all passwords use the same configuration (password length, character options, etc.), but each password is independently randomly generated and will not repeat. Generated passwords are displayed in list format, each password can be individually copied, also supports one-click copy all passwords. If more passwords are needed, can click "Generate Multiple" button multiple times.
Will my passwords be saved or uploaded?
No, all passwords are generated locally in your browser, not saved to any server, and not uploaded to the network. Password generation process is completely completed locally, using browser native random number generator, ensuring password randomness and security. Generated passwords only exist in current page memory, automatically cleared after refreshing page or closing browser, leaving no traces.
Share This Tool
Share this useful tool with your friends and colleagues
Related Tools
QR Code Generator
Generate various types of QR codes quickly, supporting text, URL, WiFi and other formats.
QR CodeGenerator
QR Code Decoder
Select QR code images and quickly decode content, supporting multiple image formats.
QR CodeDecoder
Unit Converter
Quickly convert between various units, supporting length, weight, temperature, area and other common units.
UnitConverter