Is it safe to generate passwords in a browser?
Browser generation can be reasonable when code is trustworthy and processing stays local, but device security remains decisive.
The honest answer
A browser can securely run cryptographic code, but safety depends on the delivered code, the browser, extensions, operating system, and network configuration. “Runs locally” is useful information, not a complete security guarantee.
What to check
- The page uses HTTPS.
- The tool does not send secret fields in network requests.
- Core libraries are reputable and preferably locally hosted.
- The project explains storage and versioning.
- The device is maintained and free of suspicious extensions.
Clipboard risk
Copied passwords may remain in clipboard history or be read by other applications. Paste directly into the intended field, clear clipboard history where possible, and avoid copying secrets on shared devices.
Avoid public and managed devices
Internet cafés, borrowed computers, workplace monitoring systems, and unknown phones may capture inputs. Use a trusted personal device for master secrets.
Consider passkeys
Where supported, passkeys can reduce phishing and eliminate the need to type a reusable secret. A browser generator should complement modern authentication rather than discourage it.