Password Generator
Generate passwords from 8 to 4,096 characters entirely on your machine, using Web Crypto. Mix lowercase, uppercase, numbers and symbols, exclude lookalike characters, and copy the result in one click — nothing is stored by the tool.
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Why You Need This
How this feature boosts your daily productivity
Needing a strong password mid-task usually means opening a browser tab, trusting an unknown site with a secret, and pasting the result back. That is a poor trade for something the machine in front of you can do offline. This generator runs on Web Crypto with unbiased rejection sampling, so the distribution is genuinely uniform rather than the subtly skewed output that a naive modulo produces. Every character set you select is guaranteed to appear in the result — asking for symbols and receiving a password without one is a real failure mode in simpler generators. The password exists in the output box and nowhere else.
How It Works
Get started in 4 simple steps
Open the Toolbox
Find Password Generator under Generators, alongside the UUID and Hash generators.
Set the length
Anywhere from 8 to 4,096 characters. The default is 64, which is long enough for anything that accepts it.
Choose character sets
Tick Lowercase, Uppercase, Numbers and Symbols as needed, and Avoid ambiguous characters to drop Il1O0o.
Generate and copy
Generate secure password fills the output box. Copy it in one click — it is generated locally and never stored by the tool.
Without 1DevTool
The manual way vs. the 1DevTool way
The Hard Way
The 1DevTool Way
Key Capabilities
Everything included with Password Generator
Why It Matters
The productivity impact of having developer toolbox built into your workspace
Always Available
Every developer utility you need is one click away. No searching for web tools or installing CLI utilities.
Data Stays Local
Unlike web-based tools, your data never leaves your machine. Safe for JWT tokens, API keys, and sensitive data.
Instant Results
Real-time updates as you type. No submit buttons, no loading spinners, no ads.
Comprehensive Coverage
Formatters, encoders, converters, generators, and testers — 15+ tools covering the most common developer needs.
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Ready to boost your workflow?
Download 1DevTool for free and experience Password Generator along with 170 other features — all in one app.