BlurSnap.app
Share screenshots fast — without leaking sensitive data. BlurSnap blurs everything the moment you capture; paint over just what you want to show.
Share screenshots fast — without leaking sensitive data. BlurSnap blurs everything the moment you capture; paint over just what you want to show.
This page is designed to help you find out whether BlurSnap.app is good and if it is the right choice for you.
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Paint to reveal
The capture opens fully blurred and a brush uncovers only the regions you choose. Anything you don't reveal stays hidden.
Hold to peek
Hold a key (Space by default) to see the original underneath, then it blurs back. View-only while peeking, so nothing gets saved by accident.
Frosted glass mode
Optional. Hidden regions are replaced with a plain sheet instead of a blur, for screenshots headed to a wider or less familiar audience.
Baked into the file
Hiding is applied to the pixels of the exported image, not drawn as a separate layer, so there is no overlay to remove.
Works entirely offline
No network calls at all: no cloud processing, no uploads, no accounts, no telemetry.
Configurable
Hotkey, blur strength, brush size, peek key and save folder.
The workflow is inverted. Most tools hand you a sharp screenshot and expect you to find and cover every sensitive detail before sharing. BlurSnap does the opposite: the capture opens fully blurred and you paint over only what you want visible. The default state is hidden, so a detail you never noticed — a customer name in a background tab, a notification that slid in while you were framing the shot — stays hidden instead of being shared by accident.
Because the safe outcome is the default rather than a reward for being careful. Most screenshot tools treat redaction as an optional step you have to remember at the right moment; here it is the starting state. BlurSnap is also fully local — no network calls, no accounts, no cloud — and the hiding is applied to the pixels of the exported file rather than drawn as a removable layer. One-time $9.99, no subscription.
People who send screenshots every day as part of their job and cannot afford to leak what sits around the edges: IT and support staff sharing customer-facing systems, consultants and agencies sending work to clients, and developers posting logs, dashboards and configs that live next to tokens and keys.
It fits one situation especially well: when a single screen holds several things worth showing, scattered across different corners. Cropping turns that into five disconnected images that lose the context of where each piece came from. With BlurSnap it stays one screenshot — you reveal the few spots that matter and everything between them stays hidden.
C# on .NET Framework 4.8 with WinForms, packaged as MSIX for the Microsoft Store. Blurring and compositing are custom code working directly on bitmap data — no third-party imaging libraries and no AI processing involved.
It started from a habit I could not make safe. Sending a screenshot of a busy screen meant either cropping it into several disconnected pieces, or spending a minute covering every detail I did not want to send — and still catching a customer name in a background tab afterwards. What I actually wanted was to send one screenshot and show the three or four specific things on it that mattered. So I built the opposite of the usual workflow: the capture opens fully blurred and a brush reveals only those spots, which turns "show these, hide the rest" into a single motion instead of a checklist. Everything since has gone into that motion — a peek key for finding things without guessing, and an optional frosted glass mode for screenshots headed to a wider audience.
We have collected here some useful links to help you find out if BlurSnap.app is good.
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