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Blackbar

A privacy first completely local screenshotting extension

Browser Extensions
Chrome Extensions
Open Source
Privacy
GitHub
Visit WebsiteSee on Product HuntChromeGithub

Hunted bywhowhoswhowhos

Blackbar automatically detects and redacts sensitive information before you share a screenshot. Unlike traditional screenshot tools it can identify credentials card numbers emails phone numbers addresses and other sensitive data before capture. Everything runs locally on your device with no network connections. Blackbar is free open source and requires no account.

Top comment

Hey Product Hunt 👋 I built Blackbar because screenshots are surprisingly easy to leak information from You can notice the obvious secret but miss an email address a phone number an API key or something buried elsewhere on the page Blackbar tries to catch that information before the screenshot is created The part I cared about most was making the privacy claim technically meaningful Blackbar runs entirely on the device and declares `connect-src 'none'` so Chrome blocks it from making network connections It is also free open source and requires no account I'd love feedback on the detection accuracy the workflow and what you'd want Blackbar to support next Don't trust the claim though — check the source yourself

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About Blackbar on Product Hunt

A privacy first completely local screenshotting extension

Blackbar was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #48 on the daily leaderboard. Blackbar automatically detects and redacts sensitive information before you share a screenshot. Unlike traditional screenshot tools it can identify credentials card numbers emails phone numbers addresses and other sensitive data before capture. Everything runs locally on your device with no network connections. Blackbar is free open source and requires no account.

Blackbar was featured in Browser Extensions (5.4k followers), Chrome Extensions (52.8k followers), Open Source (68.8k followers), Privacy (11.3k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 70.1k products, making this a competitive space to launch in.

Who hunted Blackbar?

Blackbar was hunted by whowhos. 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.

Want to see how Blackbar stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.