README

Caesium Image Compressor  



Try it directly on browser at caesium.app

 [!NOTE]
 I'm starting to work to the v3.0.0 version to address a lot of suggestions, feature requests and general improvements. You can participate in the development in this discussion thread.

 v2.8.5

!caesium_screenshot_280

 Special Thanks








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 What is it for

Caesium is an image compression software that helps you store, send and share digital pictures, supporting JPG, PNG and
WebP formats.
You can quickly reduce the file size (and resolution, if you want) by preserving the overall quality of the image.

 Supported Platforms

- Windows: 10 (build 1809 or later) (use old version v1.x for Windows 7 or
  8 - link)
- MacOS: 12+
- Linux: tested on Ubuntu 22.04 and Manjaro

Note: only 64bit versions are supported

 Installation

Head to the releases' page for the available
downloads.

- Windows: installer and portable versions are available
- MacOS: DMG package
- Linux: compile the source code yourself, or download binary
  from third-party build

Note that the main branch can contain unstable code. If you want to build on a stable version, use a tagged version.

 Troubleshooting and/or feature request

Please open an issue.

 Build from source

 Requirements

- Rust: required to
  compile libcaesium. Make sure you have cargo executable on you $PATH
- Qt6 SDK: binaries are built on 6.8.0 (open source)
- libssh: macOS only
- Sparkle: macOS only. Only version 1.27.1 is supported.

 Build

 Step 0 (macOS Only)

You need to set up Sparkle in order to compile the project


brew install --cask https://raw.githubusercontent.com/Homebrew/homebrew-cask/c6dfe6baf1639998ba1707f68668cf8fa97bac9d/Casks/sparkle.rb
sudo cp -R /usr/local/Caskroom/sparkle/1.27.1/Sparkle.framework /Library/Frameworks/Sparkle.framework


 Step 1

You need to configure CMake first and the command is slightly different for all the platforms:
Change the path in variables with the correct directories of the requirements.

 Windows


cmake -B build_dir -DCMAKE_PREFIX_PATH=/path/to/Qt/version -G "MinGW Makefiles"


 MacOS


cmake -B build_dir -DCMAKE_PREFIX_PATH=/path/to/Qt/version/macos -DLIBSSH_INCLUDE_DIR=/libssh/dir/include -DSPARKLE_INCLUDE_DIR=/usr/local/Caskroom/sparkle/1.27.1/Sparkle.framework/Versions/Current/Headers


 Linux

Make sure you have all the requirements installed with you own package manager


cmake -B build_dir -DCMAKE_PREFIX_PATH=/path/to/Qt/version/gcc_64


 Step 2

Then you can build with


cmake --build build_dir --config Release --target caesium_image_compressor


 Languages and translations

The 1.0 version of Caesium had a lot of community made translations, but this 2.0 release has a whole new set of strings
and no old translations can be used anymore.
Caesium 2.0 is currently available in:

| Language                                                                           | Progress |
|---------------------------------------------------------------------------------