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PassRule

Custom rule-based secure password generator locally

Productivity
Developer Tools
Security
Visit WebsiteSee on Product Hunt

Hunted byBowenBowen

Built with Codex, PassRule generates passwords entirely within your browser. You can customize length, required letters, numbers, symbols and banned characters. No data is sent to servers, fully private. It works for strict site password policies and supports memorable passphrases.

Top comment

I built PassRule using Codex after constantly running into issues: most online password generators can’t comply with weird, strict password rules from different websites. This tool runs entirely locally in your browser with Web Crypto, so none of your generated passwords leave your device. You can fine-tune every single constraint—custom symbol whitelists, banned characters, minimum counts for each character type, and even remove lookalike characters to avoid typing errors. Would love to hear your feedback! What strict password rules have you struggled with on other sites?

Comment highlights

How do you actually confirm the generated passwords stay fully on-device and aren't being silently exfiltrated, especially with browser extensions or trackers running in the background?

About PassRule on Product Hunt

Custom rule-based secure password generator locally

PassRule was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #84 on the daily leaderboard. Built with Codex, PassRule generates passwords entirely within your browser. You can customize length, required letters, numbers, symbols and banned characters. No data is sent to servers, fully private. It works for strict site password policies and supports memorable passphrases.

PassRule was featured in Productivity (655.7k followers), Developer Tools (515.5k followers) and Security (2.7k followers) on Product Hunt. Together, these topics include over 225.2k products, making this a competitive space to launch in.

Who hunted PassRule?

PassRule was hunted by Bowen. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.

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