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kitwisp

Blur Screenshot

Hide emails, card numbers, and names with the blur brush, right in your browser. Free, no upload.

  • Files never leave your device
  • No sign-up
  • Free
Markup

No screenshot loaded

Tools
Color
Stroke
6 px

Drop a screenshot here

Paste with Ctrl+V or ⌘V, or try the sample invoice. The file stays in this tab.

PNG, JPG, WebP, GIF · up to 25 MB · long side capped at 2,200 px

Keys: A arrow, R rectangle, E ellipse, T text, B blur. Ctrl+Z or ⌘Z undoes. Shift snaps lines, squares, and circles.

How to blur a screenshot

  1. Open a screenshot

    Drop a PNG, JPG, or WebP onto the panel, paste it with Ctrl+V, or load the sample. It stays in this tab.

  2. Paint over the details

    The blur brush starts selected. Sweep it across anything that should be unreadable; a bigger stroke covers more at once.

  3. Add pointers if you need them

    Arrows, rectangles, ellipses, and text live on the same canvas — switch tools, then undo anything you regret.

  4. Take the PNG

    Download or copy the finished PNG. The blur is baked into the pixels, so it cannot be switched back off.

Features

  • Redaction that sticks

    The blur is applied to the image itself before export. What leaves the page is unreadable in any viewer, not just on screen.

  • A brush, not a lab

    Paint directly on the screenshot — no region selection, no layers. Adjust the stroke size for small text or wide bars.

  • Full markup one tab away

    Need an arrow after blurring? The whole annotator — arrows, boxes, circles, text — is the same editor here.

  • Nothing is uploaded

    Decoding, blurring, and PNG export all happen in this tab, with a strict content security policy blocking outbound requests.

Frequently asked questions

How do I blur part of a screenshot?

Open the screenshot here, then paint over the area with the blur brush — it is selected by default. Download the PNG when you are done. No account, and the file never leaves your device.

Can the blur be removed from the exported PNG?

No. The blur changes the actual pixels before the PNG is built, so the hidden information is not in the file. This is redaction, not a transparency layer.

Is blurring a screenshot here private?

Yes. The image is decoded, blurred, and re-encoded inside this tab. Nothing is uploaded, and the site's content security policy blocks outbound requests as a guarantee.

What if I blur too much?

Undo (Ctrl+Z) steps back, or use a smaller stroke and paint again. You can also clear all marks and start over on the same screenshot.

Can I add arrows after blurring?

Yes. Arrows, rectangles, ellipses, and text are on the same canvas — pick a tool and keep marking. The dedicated annotate page has the full tour.

What formats can I open?

PNG, JPG, WebP, and GIF up to 25 MB, with the long side capped at 2,200 px. The export is always PNG.

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