I built an open-source Chrome extension that automatically redacts sensitive information from screenshots
I kept running into the same problem: screenshots often contain information you didn't realize you were sharing.
An API key. An email address. A phone number. A password field. Customer information.
Usually, you take the screenshot first and then manually look for things to hide.
I built Blackbar to reverse that workflow.
It reads the page before capturing it and automatically detects and redacts sensitive-looking information. The screenshot you get is already the safer version.
The part I cared most about was privacy.
Blackbar runs entirely on the device. It declares connect-src 'none', so Chrome itself blocks the extension from making network connections. It still works with Wi-Fi turned off.
It's also open source, has no account requirement, and is free.
I'd genuinely like feedback from other Chrome extension users/builders, especially on:
- detection accuracy
- false positives/negatives
- the capture workflow
- anything that would make you hesitate to trust it