In Edit modus (1), choose Face (2), then Tris to Quads (3). To ensure all faces are selected, push A. This will change triangle polygons to square ones, and reduce complexity.

Decimate is a modifier that simplifies the model's polygons and complexity in order to reduce the computer's processing load. This step should be followed by smoothing, beautify and shade smooth.

Switch to Object mode(1). Then clickplugin-autotooltip__default plugin-autotooltip_bigClick

Depending on the device, clicking is the user's action to select an element. On devices with a mouse, this means pointing at the element and pressing the left mouse button. For devices with a touchscreen, it is touching or touching and holding (iOS: long touch). In the on the wrench to open modifier properties(2).

Select “add modifier” (1) and then “decimate” from the list (2).

Here you can choose the ratio of the decimation. For example .5=50% of the original model complexity.

The polygons have been reduced in this case by half. Finding the perfect mix of reduced polygons and a nice appearance are a matter of experimentation.

To apply the decimation, clickplugin-autotooltip__default plugin-autotooltip_bigClick

Depending on the device, clicking is the user's action to select an element. On devices with a mouse, this means pointing at the element and pressing the left mouse button. For devices with a touchscreen, it is touching or touching and holding (iOS: long touch). In the first on the arrow next to the decimate modifier.

Clickplugin-autotooltip__default plugin-autotooltip_bigClick

Depending on the device, clicking is the user's action to select an element. On devices with a mouse, this means pointing at the element and pressing the left mouse button. For devices with a touchscreen, it is touching or touching and holding (iOS: long touch). In the “apply” in the drop-down list to make the decimation permanent.