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Best Image Compression Software in 2026
Image compression tools help reduce image file sizes, with listed features that can shape how files are processed. Compare compression modes and supported formats, then consider batch processing, maximum upload size, and image resizing for the files you handle. Metadata controls may also be relevant to your workflow. API access, free-plan availability, and paid-from pricing offer more points to compare. The entries include Optimole, TinyPNG, and Fastly Image Optimizer, as well as Kraken.io and Imagify. Check the published format and size details against your image needs, and consider whether you process files individually, in batches, or through an API.
- 85 apps
- Research read 27 Sept 2026
- How the order is worked out
- 1
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Avidemux
Free plan Open source LinuxMacWeb+1 - 3
Hive
Free plan Open source AndroidAPIiPhone+4Hive combines planning, collaboration, integrations, and AI tools in a single work platform. Compare the Free and paid plan limits against the size and needs of your team.
- 4
Kraken.io
Free plan APIExtensionLinux+3Kraken.io combines browser-based image processing with API access and batch handling. Review the quota and overage rate for a plan before sending larger volumes.
- 5
Caesium Image Compressor
Free plan LinuxMacWeb+1Caesium covers image compression alongside resizing, batch processing, and metadata options, with desktop and browser-based use.
- 6
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pngcrush
Free plan LinuxMacWindowspngcrush provides focused PNG compression and chunk handling through a command-line interface. Users building it should take the maker’s library-version security caveat into account.
- 8
Fastly Image Optimizer
Free plan APILinuxWebFastly Image Optimizer provides configurable, on-demand image transformations and caching, with a free monthly request allowance.
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Scalir
Free plan LinuxSelf-hostedWeb+1Choose Scalir for local bulk image compression, resizing, and conversion, with a choice of hosted, desktop, or self-hosted use.
- 11
Compressify
Free plan AndroidExtensioniPhone+1Choose Compressify if you need image compression across web and mobile, batch PDF processing, or its Figma and WordPress workflows.
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Gumlet Image
by Gumlet ImageFree plan WebiPhoneAndroidGumlet Image combines automatic optimization, responsive image delivery, and URL transformations.
- 14
MozJPEG
Free plan APILinuxMac+2MozJPEG is a library for programs seeking improved JPEG compression while retaining broad decoder compatibility.
- 15
Compresto
Free plan APIExtensioniPhone+2Compresto combines broad file-format support with offline batch processing on macOS.
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Squoosh
Free plan WebSquoosh offers a focused browser workflow for compressing and reviewing images, with local processing and no charge listed beyond its free plan.
- 18
FileOptimizer
Free plan WindowsFileOptimizer offers broad file support, batch handling and command-line workflows at no charge.
- 19
Curtail
Free plan LinuxCurtail combines multiple image formats with batch processing and a safeguard against larger compressed files. Consider its listed home-folder permissions when choosing an installation package.
- 20
Smush
Free plan APIChoose Smush if you need API-based image processing alongside campaign formats and targeting tools.
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ImageOptimizer
Free plan APIWebChoose ImageOptimizer for browser or API workflows that combine compression, resizing, conversion, metadata controls, and local processing.
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XConvert Image Compressor
Free plan APIWebXConvert combines image compression, resizing, conversion, and batch processing, with a stated free image-size allowance.
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imageopt
Free plan LinuxMacWindowsimageopt focuses on safe, automatable compression from the command line and GitHub Actions.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price