RightThumb

Most websites that provide preview of content through pictures don’t use the whole image for small areas, because it can take some time to load, and is not quite a practical method. Instead, smaller versions known as thumbnails are used, and even Windows generates them for preview. To quickly build such files, you can rely on RightThumb.

Can be used on the go

You can take the application wherever you go on a USB flash drive, because it doesn’t ask you to go through a setup process to function. This also means that you don’t have to worry about affecting the stability of the target PC, because registries are not a dependency here.
What’s more, you don’t even need to use the application’s main window, since it cleverly integrates in the system context menu to provide quick access to its set of features. However, you might want to open the main window at least the first time, so you can configure the way thumbnails are generated, and where.

Set size limits and resampling filters

Depending on where you want to use the new thumbnails, size specifications let you manually write down the width or height to represent the maximum point the image is stretched. What’s more, you can pick from various different preset resolutions, or proportions like half or quarter of the original picture.
Moreover, file support gives you the possibility to have thumbnails generated under different formats, such as BMP, JPEG, GIF, or PNG. Renaming options usually add a “th” at the end, but you’re free to use a prefix, or suffix of custom characters. To preserve quality, you can set it manually, or use one of several resample filters like Lanczos3, Box, Triangle, Hermite, Bell, or Mitchell.

A few last words

Taking everything into consideration, we can say that RightThumb is a practical application you can use to generate thumbnails for one or more pictures at a time. You don’t even depend on the main window for this operation, since it’s triggered from the context menu, while portability adds a lot to both flexibility and practicality.