batch picture resizer
MobaPhoto - Digital Photo Manager

MobaPhoto is a Free and Portable Digital Photo Manager. It allows you to create professional looking photo galleries for your website or webpages. Additional features include the ability to batch resize photos, correct red eye, batch rename pictures, crop photos, rotate photos and more. More importantly its entirely Free and already available as a portable application.
FotoSizer Portable Batch Image Resizer

FotoSizer is a lightweight, free batch image resizer for Windows that can be made portable to run directly from a USB flash drive. It allows users to resize, compress, and convert images in bulk, supporting popular image formats such as JPG, PNG, GIF, TGA, and BMP. This makes FotoSizer an ideal portable tool for photographers, bloggers, webmasters, and anyone needing fast image optimization without installing heavy image editors.
Whether you are preparing photos for websites, reducing image file sizes for email, or converting large batches of pictures for archival purposes, this free software can handle dozens or even hundreds of images in just a few clicks.
Photo Resizer - Batch Picture Resizer

Photo Resizer is a Free batch picture resizer. The tool can be used to resize single .webp images or entire image directories by simply dragging and dropping them onto the executable. Perhaps the most unique feature of this tool is that all of the available image resizing options can be set by simply editing the name of the program. Which happens to be a very intuitive way of bulk editing photos, pictures, and images.
FastStone Photo Resizer

FastStone Photo Resizer is a portable image editing tool that can be used to easily convert and resize images. In addition it can also be used to rename, crop, rotate, change color depth, add text and watermarks to images all via the easy to use GUI applet or simple drag and drop operation. Edit single images or bulk edit in batch mode many images (resize multiple images) at once.
XnView - Image Viewer Converter and Resizer

XnView is an free image viewer, graphical image file converter, and batch image resizer. It can import close to 400 different picture formats and can export around 40 different formats. All while utilizing a familiar explorer like user interface. This image editing utility is often compared by others to other popular free tools such as IrfanView.
