4K Image Compressor v1.4.0.0220 is a cross-platform image compression utility for Windows, macOS, and Linux that is centered on lossless optimization, batch-oriented workflows, and keeping image quality intact.
4K Image Compressor is intended to shrink image files without sacrificing the look of the original. It includes lossless optimization and exports to modern formats like WebP and AVIF, which makes it a solid fit for anyone who wants leaner image delivery without adding workflow complexity.
It works well as a desktop application and as a command-line tool for automation. Features such as batch processing, live preview, GPU acceleration, and checksum verification are aimed at making repeated compression jobs easier to manage while giving users more visibility into the output.
- Lossless image compression for quality-first optimization
- Batch processing for working on many files in one pass
- Real-time preview for checking results before saving
- Metadata sanitizer for removing or managing embedded data
- Checksum verification to validate processed output
- GPU acceleration for faster execution on supported systems
- CLI mode for scripting and automated workflows
- Multilingual support for wider usability
- Support for WebP and AVIF output formats
- Download the latest build from the project download page.
- If you are using the repository source, clone it with:
- Open the application package or run the CLI entry point according to your platform setup.
For first use, launch the app or start the command-line tool with a sample image folder to confirm that processing, preview, and output paths are working as expected.
Common workflows include compressing a single image, processing an entire folder of assets, or converting large batches to WebP or AVIF for web publishing.
Example CLI-style workflow:
- Open a terminal in the project directory
- Run the compressor against one file or a folder
- Review the preview output if enabled
- Save the optimized results to your chosen destination
Example use cases:
- Prepare image assets for websites
- Reduce storage usage in large media libraries
- Optimize export folders before publishing
- Automate repeated compression jobs in scripts
You can adjust settings through the app interface or with CLI options, depending on how you run the tool.
Example structure:
- Output format:
webporavif - Compression mode:
lossless - Batch behavior: enabled or disabled
- Preview: on or off
- Metadata handling: preserve or sanitize
If your build stores preferences locally, check the application settings area or the user configuration directory for saved options.
- Operating systems: Windows, macOS, or Linux
- Runtime: a compatible desktop environment or terminal setup
- Storage: enough free space for source images and processed output
- Hardware: GPU support is optional but can improve performance where available
- Permissions: read access to input files and write access to the output location
Does it support bulk jobs?
Yes. Batch processing is included for multi-file optimization tasks.
Can I use it from the command line?
Yes. CLI mode is available for scripted and repeatable workflows.
What formats are supported?
The extracted profile references WebP and AVIF support.
Is metadata preserved?
The tool includes metadata retention and metadata sanitizer capabilities, so behavior depends on your chosen settings.
How do I update it?
Download the latest build from the project link and replace or reinstall your current version as needed.
What should I check if output looks different?
Review compression settings, output format, preview results, and metadata options before running another batch.
GNU GPL v3.0 - see LICENSE for details.
