The TimesX script upsize images by the specified multiplier. Unlike alternatives, such as Fred Miranda's original, free Stair Interpolation (now apparently withdrawn and replaced with a commercial version offering additional options), TimesX produces images that are exactly 1.5, 2, 3 or 4 times larger than the original. It doesn't try to do anything fancy to the DPI, just ups the pixel count by the selected multiplier.

Click on a link to download the matching script:

Times 1.5  Times 2  Times 3  Times 4

Read installation instructions and running a script.

Version 1.0 22 Jun '02 Copyright © Roger Cavanagh and Jeremy Cavanagh
These scripts are provided free for personal use.
No liability will be accepted for any consequences arising from the use of these scripts.
Each script may be copied IN ITS ENTIRETY to others provided no charge is made other than for media.