Best Image Compression Software 2026

Check the pricing path

Pricing models on the list include free, freemium and paid plans. Compressify, Kraken.io, imgkilo, FileOptimizer and Curtail list a free plan; Kraken.io lists paid access from $5 per month, while Compresto lists a starting price of $49.

A free trial is a separate comparison field from a free plan. Check both fields before choosing a tool for ongoing work.

Match the processing workflow

Compare compression modes and batch processing when you need to handle groups of images or different output targets. Max upload size can limit which source files fit the service.

API access matters when compression needs to connect to another application or publishing flow.

Confirm platform support

The listed platforms include web, Linux, Windows, macOS, API and iOS. Choose a tool that matches where you prepare or deliver images.

Web tools can suit browser-based work, while desktop and mobile support can matter when files start on a local computer or phone.

Review image controls

Supported formats show which source and output files a tool can handle. Image resizing can combine size reduction with dimension changes.

Metadata controls matter when image information should be retained or removed. Check these fields alongside the compression modes offered.

Consider source access

Open-source options appear on the list alongside hosted and commercial services. If you need to read or change the code, check the tool's licence and deployment requirements before choosing it.