Image Tuner is a free batch image resizing, renaming, conversion and watermarking tool with an intuitive UI. If you are looking for a tool that will be able to do everything you need to do with images every day, missing Image Tuner would be a crime!

Version: 6.6Image Tuner is a free batch image resizing, renaming, conversion and watermarking tool with a super-intuitive and straightforward interface.
License: Free
Operating System: Windows
Homepage: www.glorylogic.com
Developed by:
Based on an extremely fast image processing engine, this award-winning software has a bare minimum of controls and will help you with the most typical image-related tasks. You can work with individual files and entire folders to resize, convert, rename and watermark images with surprising ease.
Version 6.6: Updated image processing SDK. Updated user interface and dialogs. Improved program performance and image conversion. Improved support of high DPI scaling. Improved compatibility with latest version of Windows 10. Fixed bug with "Error 5" during installation.
Version 6.5: Improved compatibility with dark Windows themes. Minor bug fixes and improvements.
Version 6.4: Improved high-DPI monitors support. Improved compatibility with latest release of Windows 10. Resolved problem with hanging during installation. Minor fixes and improvements.
Version 6.2: Improved high-DPI monitors support. Changed location for storing file with settings. Fixed bug with loading system font. Resolved problem with Linear/FastLinear filters. Minor fixes and improvements.