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Black Out Part of an Image Online

Cover private info with a solid black box. The safest redaction method.

🔒 No upload · Runs in your browser · Instant download
Regulators and security teams prefer solid black redaction because nothing underneath can be reconstructed from the pixels. Upload a document scan or screenshot, switch to Black Box mode, and cover account numbers, names, or API keys before the file leaves your machine.
Mode
Shape

Drop your image here

Or click to browse · Paste with Ctrl+V also works

PNG · JPG · WebP · GIF
How It Works
1

Upload

Drop your image in or paste from clipboard.

2

Pick Mode

Black Box, Blur, or Pixelate.

3

Select Areas

Rectangle, oval, or freehand lasso — then hide what you selected.

4

Download

Hit Download PNG. Done.

ImageCompress.ioAfter blacking out your sensitive info, use ImageCompress to shrink your file before sending or uploading. Free and runs in your browser.

Visit ImageCompress.io →

Blackout Image Online — Irreversible Redaction Boxes

To blackout image online means replacing a region with opaque black — not frosting it with blur. HideShot paints a flat rectangle that removes underlying detail entirely, which is why legal and compliance workflows favor this method.

Use blackout for Social Security fragments, bank balances, medical record numbers, and API tokens in engineering screenshots. Blur and pixelate can sometimes be reversed with effort; black boxes cannot.

Stack multiple boxes on one page: redact two invoice numbers and a signature block, then export once. Undo is available if you cover the wrong line by mistake.

Frequently asked questions

Why is a black box safer than blur for sensitive text?

Blur reduces legibility but may preserve recoverable signal. Black paint removes the underlying pixels from the exported image.

Can someone recover data under a black box?

Not from the downloaded PNG. Always verify visually before sharing — stray pixels outside the box may still leak context.

Does blackout work on PDF screenshots?

Upload the PDF page as PNG or JPG (print-screen or export). HideShot edits raster images, not live PDF layers.

Should I still blur faces if policy requires blackout?

Follow your organization's standard. When in doubt for identifiers and financial data, default to black box.