nConvert is described as 'NConvert is a powerful command line multi-platform batch image processor with more than 80 commands. Compatible with 500 image formats' and is a Image Editor in the photos & graphics category. There are more than 25 alternatives to nConvert for a variety of platforms, including Windows, Mac, Web-based, Linux and Android apps. The best nConvert alternative is Image Toolbox (Resizer), which is both free and Open Source. Other great apps like nConvert are ImageMagick, Caesium Image Compressor, XnConvert and Photo Editor.
dcraw is an open-source computer program which is able to read numerous raw image formats, typically produced by high-end digital cameras. dcraw converts these images into the standard PPM and TIFF image formats.
Phatch is an user friendly, cross-platform Photo Batch Processor and Exif Renamer with a nice graphical user interface. Phatch handles all popular image formats and can duplicate (sub)folder hierarchies.
Effortlessly edit images with batch compression, scaling, cropping, rotation, and format conversion. Convert PDFs to images, create PDFs from images, package images, and more. Explore EXIF data, preview material themes, and pick colors from images.
Reduce your image file sizes with Kingshiper Image Compressor, allowing you to easily optimize and compress your images without any quality loss.
ImBatch is a batch image processor with a nice graphical user interface. It will allow you to edit multiple image files at the click of a button by using scripts. The script will be created by combining Tasks.
PhotoBulk is easy-to-use bulk image editor that lets you add text/image watermark, resize, and optimize hundreds and thousands of images or photos in just one click.
Ralpha Image Resizer is a lightweight and portable program that can perform image operations in batch mode, such as resizing and applying filters.
Split multiple pictures into specified number of slices by rows and columns or into tiles of desired size. Use over 130 Actions like resize, crop, contrast, etc. Convert to/from and save results in any of 30+ formats. Add watermarks and more!.
With BIMP you can apply a set of manipulations to an entire group of images! It provides an easy to use interface and a lot of batch functions.
Compress or convert images on the web with offline support. Images are not uploaded on server and processed on client with webassembly. Support for formats like JPEG, PNG, WebP, AVIF and JXL.
WebUtils Image Compress is the most popular SaaS alternative to nConvert.
Bulk Resize Photos resizes batches of your photos in your browser so that they are a more suitable size for transmission over the internet.
adionSoft Fast Image Resizer is a small tool to quickly resize a batch of pictures.
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