Apps similar to 4K Image Compressor include Image Toolbox, which is free and open source. Other options are Caesium Image Compressor, ImageOptim, FileOptimizer and Squoosh. Image Optimizers like 4K Image Compressor are a crowded field, with more than 50 alternatives for Windows, Mac, Linux, the web and Android.
ApowerCompress is a free file compression tool which can help you compress images, videos and PDF files at a super fast speed. It supports JPG, JPEG, PNG, GIF, PNG, MP3, MOV, WMV, AVI, RMVB, 3GP, PDF, etc. format.
PDFOptim is a simple and intuitive way to compress, reduce and optimize PDF file size. PDFOptim provides easy and effective ways to compress big image-rich PDF files using extensive set of options and presets.
India
Shrink O'Matic is an AIR application to easily (batch) resize (shrink) images. It handles JPGs, GIFs and PNGs.
Leanify is a lightweight lossless file minifier/optimizer. It removes unnecessary data (debug information, comments, metadata, etc.) and recompress the file to reduce file size. It will not reduce image quality at all.
Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
United Kingdom
NConvert is a powerful command line multi-platform batch image processor with more than 80 commands. Compatible with 500 image formats.
France
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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.
ItalyEU
Don’t spend another second worrying about compressing your images. Install Imgbot into your GitHub projects, and focus on your application.
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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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.
Free Mac utility for compressing scanned PDF documents by up to 80% while balancing file size and readable quality. Its drag-and-drop workflow requires no complex settings, and offline processing keeps confidential documents on the computer rather than sending them to an online service.
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