What does AltSnap do?

AltSnap lets you move, resize and snap any window by holding the Alt key and dragging with the mouse, instead of aiming for the title bar or the thin window border.

How much does AltSnap cost?

Nothing. AltSnap is free and open source, published under the GNU GPL. The latest build is version 1.68.

Which Windows versions are supported?

AltSnap runs on Windows 10 and Windows 11, 64-bit. A 32-bit build and an ARM64 build are also published upstream.

Do I need administrator rights?

No for normal use. AltSnap runs in the notification area as your user. Administrator rights are only relevant if you want to manage elevated windows.

How do I move a window?

Hold Alt and drag with the left mouse button anywhere inside the window. Alt plus the right mouse button resizes it, and dragging to a screen edge snaps it there.

Where can I get AltSnap safely?

From this site or from the official GitHub releases page. Watch out for repacked builds on forums and file sharing sites.

AltSnap

Hold Alt, drag anywhere. Move, resize and snap any window.

Page updated: November 15, 2026

Move and resize windows with AltSnap

AltSnap gives every Windows program the window handling you wish it had. Hold the Alt key and left-drag anywhere inside a window to move it, right-drag to resize it, and let go near a screen edge to snap it into place. No more hunting for a title bar that the app has hidden or a border that is two pixels wide. It is a single portable executable that sits in the notification area; there is nothing to install and no service to manage. The FAQ below covers the common questions, and the usage steps take about a minute.

Download

Download AltSnap 1.68
AltSnap.v1.68.zip · 64 MB · Windows 10/11 64-bit. All versions.

Only trust this page. Plenty of repacked AltSnap builds float around forums and file sharing sites. The real project is published by its maintainer on GitHub, and every release is listed on the releases page.

Usage

Grab AltSnap.v1.68.zip from the downloads page and extract it to a folder of your choice.
Run AltSnap.exe. It starts in the notification area; no administrator prompt is normally needed.
Hold Alt and drag with the left mouse button to move the window under the pointer.
Hold Alt and drag with the right mouse button to resize it. Drag to a screen edge to snap it there.
Right-click the notification-area icon for settings, the blacklist and the option to start AltSnap with Windows.

If SmartScreen complains, choose More info → Run anyway. Open source tools are usually unsigned. The settings live in AltSnap.ini next to the executable when you keep it portable, so a folder copy carries your configuration with it.

What it does

Version 1.68 keeps the familiar AltDrag mouse behaviour and adds parameters for actions, so a keyboard shortcut can step a window by an exact number of pixels instead of a fixed grid. Moving a window works from any point inside it, including apps that draw a custom title bar. Resizing uses the same Alt modifier, snapping follows the edges of the current monitor, and a blacklist keeps games and other special windows out of the way.

Alt + left drag moves a window from anywhere inside it
Alt + right drag resizes from the nearest corner or edge
Snap to monitor edges, with an adjustable drag threshold
Alt + scroll sends the wheel to the window under the pointer
Per-application blacklist and a portable .ini configuration
32-bit, 64-bit and ARM64 builds published upstream

What you need

What	Details
Windows	10 or 11, 64-bit
Rights	Normal user account
Install	None, the archive is portable
Antivirus	Some AV products flag unsigned mouse hooks; an exclusion may be needed

FAQ

What does AltSnap do?: AltSnap lets you move, resize and snap any window by holding the Alt key and dragging with the mouse, instead of aiming for the title bar or the thin window border.
How much does AltSnap cost?: Nothing. AltSnap is free and open source, published under the GNU GPL. The latest build is version 1.68.
Which Windows versions are supported?: AltSnap runs on Windows 10 and Windows 11, 64-bit. A 32-bit build and an ARM64 build are also published upstream.
Do I need administrator rights?: No for normal use. AltSnap runs in the notification area as your user. Administrator rights are only relevant if you want to manage elevated windows.
How do I move a window?: Hold Alt and drag with the left mouse button anywhere inside the window. Alt plus the right mouse button resizes it, and dragging to a screen edge snaps it there.
AltSnap does not react in one particular game.: Add that program to the blacklist from the notification-area menu, or run AltSnap as administrator if the game itself runs elevated. Games that capture the mouse exclusively may need to stay blacklisted.
Where can I get AltSnap safely?: From this site or from the official GitHub releases page. Watch out for repacked builds on forums and file sharing sites.

Changelog

1.68 (July 4, 2026)

Action parameters, for example Step_U_32 to step a window up by 32 pixels
Advanced mouse and keyboard actions can be configured from the shortcut editor
DragOutThresholdPx in the [Advanced] section fixes erratic drag starts on Windows 11
Grid-snapping apps receive WM_SIZING while a window is resized

1.67 (November 14, 2025)

New Center2 action centres a window on its physical monitor
Arbitrary accelerators for the windows list menu via MenuAccelMap
Fixes for stuck modifier keys and fast cursor movement between monitors
Updated translations

1.66 (September 21, 2025)

Layout actions and an optional layout preview
Separate wheel-up and wheel-down actions
Zoom factor for the windows list menu

Disclaimer

AltSnap is hosted here for educational and archival reasons. It is free software: the source code and the licence are published by the maintainer. Redistributed builds are provided as-is, without warranty.