4K Image Compressor
4K Image Compressor is a free cross-platform app that lets you optimize PNG, JPEG, HEIC, and WEBP images quickly and without quality loss.
With 4K Image Compressor, you can:
Reduce the size of an image by a desired number of percent or to a particular size in megabytes, kilobytes, or even bytes
PNG, JPEG, HEIC, and WEBP are supported for optimization and conversion, and more are coming soon
Batch compression is available to save your time
You can upload images in lossless and lossy formats.
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XnView
XnView MP/Classic is a free Image Viewer to easily open and edit your photo file. The Image Viewer supports all major image formats (JPEG, TIFF, PNG, GIF, WEBP, PSD, JPEG2000, OpenEXR, camera RAW, HEIC, PDF, DNG, CR2). As Image Viewer you have features like color adjusting, image resizer, cropping, screen capture, metadata editing (IPTC, XMP) and much more. With its easy-to-use explorer-like interface, XnView MP allow you to quickly view your images and photos, but also to make image management. You have features like batch rename, batch converter, duplicate image finder, image compare, but you can also create contact sheets, slideshow.
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JDeli
JDeli is a powerful Java SDK designed to help you easily read, write, convert, manipulate and process various image formats in Java. Here’s an overview of its features:
-Wide Image Format Support: JDeli reads/writes BMP, GIF, HEIC, JPEG, JPEG2000, PNG, TIFF, and WebP. It also reads DICOM, EMF/WMF, PSD, and SGI formats.
-High Performance: JDeli’s encoders and decoders outperform alternatives, making it ideal for performance-critical applications.
-File Security: JDeli operates securely on your servers, with no callbacks or cloud access. Critical customer data remains secure.
-Ongoing Development: JDeli offers nightly and stable builds with regular new features. It continues to expand its range of supported image formats, including AVIF, HEIC, and JPEG XL.
-No Third-Party Libraries: JDeli avoids third-party dependencies, minimizing security risks and JVM crashes.
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Picview
Picview is an image viewer for macOS with a nice minimal modern user interface. Picview works great with JPEG, HEIC, PSD, RAW, WEBP, PNG, GIF, and many other formats. Provides basic image processing, including flip and rotate, EXIF, and other information. Supports keyboard shortcuts and trackpad gestures. The most important, Picview like Windows' default picture viewer — Photos, where zoom in and out with the mouse wheel and switch between images with arrow keys and/or with on-screen buttons.
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