Sizer has been completely rewritten to improve compatibility with modern applications including Windows 10 Apps. Sizer 4.0 is less intrusive than previous versions and therefore is more stable.

Sizer is a freeware utility that allows you to resize any window to an exact, predefined size. This is extremely useful when designing web pages, as it allows you to see how the page will look when …

By default Sizer is configured to allow window resizing to 640×480, 800×600 and 1024×768. To add additional sizes click the Add button, then enter a Description, a Width and a Height into the relevant …

Sizer is a utility to resize windows to exact dimensions. It is used by web designers, technical authors, developers and minecraft players, to exert control over where and how big application windows …

Sizer version 3.4 has been abandoned because of too many problems integrating with modern applications. Sizer 4.0 is a ground-up rewrite that is designed to overcome these issues and problems.

Sizer only moves or sizes a window such that it remains visible within the active monitor. Some users with multiple monitor find this behaviour frustrating but it’s by design.

Sizer installs hooks into all running applications and uses them to detect when a window is resized or when a user interacts with the border. In previous versions of Sizer, special handling was performed …

The syntax for Sizer expressions and macros is shown below in as railroad diagrams. Macros follow the macro diagram; and expressions follow the expression diagram.

In about mid 1999, I reworked Sizer to operate in the manner I'd originally intended (i.e. right clicking on the window border to bring up the popup menu). This code is substantially different from previous …

If you need different sizes these can be configured in the Configuration Dialog. Alternatively, if you need more sophisticated sizing control, take a look at Sizer. Contact If you've any bug reports, suggestions …