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Black Screen Record is a serverless, privacy-first web utility for iPhone, Android, and PC that records video using a dimmed blackout overlay. Protect your battery life on OLED screens by turning pixels completely off, and prevent suspended background processes with the Wake Lock API. Unlike other recorders, all video chunks are processed 100% locally on your CPU and stored in your browser's IndexedDB. Zero cloud uploads and a strict CSP ensure your data never leaves your device.
Black Screen Record is a serverless, privacy-first web application designed to let you record high-definition video and audio on iPhone, Android, and PC using a battery-saving blackout screen overlay. By dimming screen pixels to solid black and halting live graphic rendering, the app simulates a locked screen state while keeping the browser awake to record continuously.
What makes it new or different? Traditional recording tools suffer from three major issues: they drain mobile batteries rapidly by keeping viewfinders fully lit, they require installing native app store packages containing invasive trackers, or they force you to upload your video streams to remote cloud servers.
Black Screen Record operates entirely inside your client-side browser sandbox. You don't need to install unverified executable files or store bundles. We use the browser's native MediaRecorder API to process video chunks locally on your CPU. Videos are saved directly to your device's storage using IndexedDB. To prove our privacy promises, the application enforces a strict Content Security Policy (CSP) that blocks all outbound external network connections. It is physically impossible for your video recordings to leak or be uploaded.
Key Standout Features:
OLED Battery Preservation: On OLED and AMOLED screens, black pixels (#000000) are fully turned off, drawing zero power. The blackout overlay turns off your screen's pixels during active recording, significantly extending device battery life.
GPU Viewfinder Halting: Halting the rendering of the active viewfinder stream reduces GPU and processor temperatures, preventing mobile devices from overheating during long recording sessions.
Screen Wake Lock API: Bypasses mobile OS sandboxes (which suspend background browser processes when the screen sleeps) by forcing the browser tab to stay active in the foreground while displaying a black screen.
Pocket Touch Protection: The slide-to-unlock widget automatically fades out after 4 seconds of inactivity. A simple double-tap anywhere wakes the slider back up, preventing accidental touch inputs from interrupting your recording.
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About Black Screen Record on Product Hunt
“blackscreenrecord, recorder”
Black Screen Record was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #89 on the daily leaderboard. Black Screen Record is a serverless, privacy-first web utility for iPhone, Android, and PC that records video using a dimmed blackout overlay. Protect your battery life on OLED screens by turning pixels completely off, and prevent suspended background processes with the Wake Lock API. Unlike other recorders, all video chunks are processed 100% locally on your CPU and stored in your browser's IndexedDB. Zero cloud uploads and a strict CSP ensure your data never leaves your device.
Black Screen Record was featured in Design Tools (261.2k followers), Software Engineering (42.7k followers) and Privacy (11.2k followers) on Product Hunt. Together, these topics include over 54.4k products, making this a competitive space to launch in.
Who hunted Black Screen Record?
Black Screen Record was hunted by blackscreenrecord. 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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