CA

Caesium Image Compressor

Caesium is a free, open source image compression software that reduces image file size up to 90% without losing visual quality. It supports JPG, PNG, WebP, and TIFF formats, offers batch processing, real-time preview, and metadata options.
Latest: 2.8.5
Last checked: Jun 9, 2026 12:10am
Rank: 6240/15140
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Overview

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License: GPL-3.0Installer: Installer, Portable, DMG (macOS)Winget: Available

Version & Lifecycle

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Current: 2.8.5 Avg cadence: Several releases per year (latest v2.8.5 in May 2025)

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

Community Notes

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Release Notes & Updates

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Also known as

Other names people use for this app — helps search and matching.

caesiumphCaesium Image Compressor

Packaging Notes

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Available as Windows installer, portable version, and macOS DMG. Source code available on GitHub.

Notes

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Supports Windows 10 (build 1809) or later and macOS 12+. Command line tools available for Linux and macOS. Latest version 2.8.5 released in May 2025.