batch images
Converseen. is a free and open-source multiplatform app that enables you to batch edit, convert and resize images with simple and few clicks. Moreover, Converseen can convert an entire PDF document into a set of images with your preferred characteristics. You can choose from over 100+ formats, set the size,
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Enhance Privacy with ExifCleaner: A Simple Tool to Clean Exif Data from Images
photography
aPhoto is a batch, intuitive and portable program that helps you to make text(eg. Copyright Notice) and image(eg. Logo) watermarks for the photos, and save the result photos to JPG, PNG, GIF, or BMP file formats. aPhoto is a lightweight app that allows users to easily embed text
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darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them. darktable is created for photographers, by