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Blackbar
Destroy secrets in screenshots - Mac & Linux & Windows
Report screenshots are full of client secrets — internal IPs, hostnames, creds, tokens, hashes — that can't ship in a deliverable, so you black them out by hand, one by one, hoping you didn't miss one. Blackbar finds them automatically and destructively burns them out (opaque bar into a fresh bitmap, metadata stripped — not a blur you can undo), keeps the same value labeled the same across every screenshot, and runs 100% offline. macOS; Windows; Linux, $19 once.
Blackbar comes from a chore I hated: writing the report after an engagement.
Every screenshot you include as evidence is full of stuff that can't leave the building — internal IPs, hostnames, creds, tokens, NTLM hashes, employee emails. So you spend an evening in Preview/GIMP drawing black boxes by hand across dozens of screenshots, praying you didn't miss one. And it still goes wrong: a box that's a pixel short, a "blur" that's reversible, a PNG that still has metadata, or the same IP redacted three different ways across the report.
That's a security incident waiting to happen — with your client's name on it.
Blackbar does it in one pass:
• Captures, too — grab a screen region with ⇧⌘2 (macOS) / Ctrl+Shift+2 (Linux) and it drops straight into the editor, detected and ready. Capture + redact in one tool, no separate screenshot step.
• Finds the secrets automatically — 27 detectors for IPs, hostnames, API keys, JWTs, AWS/Stripe/GitHub tokens, NTLM hashes, IBANs, and more.
• Destroys them — the export is re-encoded from a fresh opaque bitmap with the regions overwritten and every scrap of metadata stripped. No hidden layer, no un-blur, nothing to recover.
• Stays consistent — the same value gets the same label ([IP-1], [HOST-1]…) across every screenshot, so a 40-image report still makes sense.
• Stays private — OCR, detection, and redaction all run locally. No network calls (enforced by a test in CI), no telemetry, no account. Easy to run on an engagement laptop, and you can verify the download (checksums + GPG signature).
Today's launch is Blackbar 1.0 on Linux / Windows / MacOS — a single-file AppImage that runs on any x86_64 distro (plus a .deb), 1:1 with the Mac app. One $19 license covers both platforms, 14-day trial.
I'd love your feedback — especially a secret that slips past detection or a detector that's too aggressive. Reply here and I'll jump on it. 🙏
About Blackbar on Product Hunt
“Destroy secrets in screenshots - Mac & Linux & Windows”
Blackbar was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #105 on the daily leaderboard. Report screenshots are full of client secrets — internal IPs, hostnames, creds, tokens, hashes — that can't ship in a deliverable, so you black them out by hand, one by one, hoping you didn't miss one. Blackbar finds them automatically and destructively burns them out (opaque bar into a fresh bitmap, metadata stripped — not a blur you can undo), keeps the same value labeled the same across every screenshot, and runs 100% offline. macOS; Windows; Linux, $19 once.
On the analytics side, Blackbar competes within Privacy, Developer Tools and Security — topics that collectively have 532.7k followers on Product Hunt. The dashboard above tracks how Blackbar performed against the three products that launched closest to it on the same day.
Who hunted Blackbar?
Blackbar was hunted by Ivan Spiridonov. 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.
For a complete overview of Blackbar including community comment highlights and product details, visit the product overview.
Ivan Spiridonov
Hey Product Hunt 👋
Blackbar comes from a chore I hated: writing the report after an engagement.
Every screenshot you include as evidence is full of stuff that can't leave the building — internal IPs, hostnames, creds, tokens, NTLM hashes, employee emails. So you spend an evening in Preview/GIMP drawing black boxes by hand across dozens of screenshots, praying you didn't miss one. And it still goes wrong: a box that's a pixel short, a "blur" that's reversible, a PNG that still has metadata, or the same IP redacted three different ways across the report.
That's a security incident waiting to happen — with your client's name on it.
Blackbar does it in one pass:
• Captures, too — grab a screen region with ⇧⌘2 (macOS) / Ctrl+Shift+2 (Linux) and it drops straight into the editor, detected and ready. Capture + redact in one tool, no separate screenshot step.
• Finds the secrets automatically — 27 detectors for IPs, hostnames, API keys, JWTs, AWS/Stripe/GitHub tokens, NTLM hashes, IBANs, and more.
• Destroys them — the export is re-encoded from a fresh opaque bitmap with the regions overwritten and every scrap of metadata stripped. No hidden layer, no un-blur, nothing to recover.
• Stays consistent — the same value gets the same label ([IP-1], [HOST-1]…) across every screenshot, so a 40-image report still makes sense.
• Stays private — OCR, detection, and redaction all run locally. No network calls (enforced by a test in CI), no telemetry, no account. Easy to run on an engagement laptop, and you can verify the download (checksums + GPG signature).
Today's launch is Blackbar 1.0 on Linux / Windows / MacOS — a single-file AppImage that runs on any x86_64 distro (plus a .deb), 1:1 with the Mac app. One $19 license covers both platforms, 14-day trial.
I'd love your feedback — especially a secret that slips past detection or a detector that's too aggressive. Reply here and I'll jump on it. 🙏