PortalPack is described as 'Helps web publishers and content teams batch-convert images into ready-to-use web variants (Hero / Inline / Thumb). Drag folders, convert hundreds of images at once, preserve directory structure, and export WebP/AVIF with quality controls. Works locally (no uploads)' and is a Image Converter in the file management category. There are four alternatives to PortalPack for a variety of platforms, including Windows, Linux, Mac, iPhone and iPad apps. The best PortalPack alternative is ImageMagick, which is both free and Open Source. Other great apps like PortalPack are XnConvert, RIOT - Radical Image Optimization Tool and FastStone Photo Resizer.
ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.
XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux.
Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.
Batch process photos with resizing, cropping, color adjustments, text or watermark overlays, preview changes before saving, automate renaming with custom patterns, support for major formats, folder structures, preset settings, and drag-and-drop management.
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