Upscale
Use Upscale to increase the number of pixels in your image.

There are two methods to resize your image:
- SCALE FACTOR - upscale your image by a multiplier of up to 6x
- DIMENSIONS - upscale your image by inputting a custom width or height
Custom Scale Multiplier
- Click "Custom" as the multiplier
- In the "Scale factor" field, type in your multiplier
- Press Enter
The dimensions of your image automatically adjust after you set the scale. Custom scales can be specified by up to 2 decimal points.

The default PPI is 300. You can change this in your Preferences panel.
Set Default Output Size
Go to your Settings in the Topaz Gigapixel AI menu, click Settings...
On Windows, Preferences is located under Edit > Settings.

Under Settings, click on Upscale and resize.
In Resize type, change the drop down boxes to Set output type.
Select your type.

Click Save to finish.
Longest Side
Introduced in v8.2.0, image batches can be scaled by the longest side.
To enable longest side, select which images you want to upscale by clicking the check boxes in the file list.
When multiple images are selected, the Dimensions show mixed indicating that there are multiple values across all images.
Under Longest edge, type in the value you want to apply.

The longest side option does not appear when only one image is selected.