GitHub – Lymphatus/caesium-image-compressor: Caesium is an image compression software that helps you store, send and share digital pictures, supporting JPG, PNG and WebP formats. You can quickly reduc

Caesium Image Compressor

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: 8.1+ (use old version v1.x for Windows 7 – link)
• MacOS: 10.15+
• 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

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 6.4.2 (open source)
• libssh: macOS only

Build

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 -DCMAKE_BUILD_TYPE=Release -G "MinGW Makefiles"

MacOS

cmake -B build_dir -DCMAKE_PREFIX_PATH=/path/to/Qt/version/macos -DLIBSSH_INCLUDE_DIR=/libssh/dir/include -DCMAKE_BUILD_TYPE=Release

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 -DCMAKE_BUILD_TYPE=Release

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:

• 🇺🇸 English
• 🇮🇹 Italian
• 🇫🇷 French
• 🇯🇵 Japanese
• 🇨🇳 Simplified Chinese
• 🇪🇸 Spanish
• 🇪🇬 Arabic (Egypt)
• 🇩🇪 German
• 🇷🇺 Russian
• 🇹🇷 Turkish
• 🇬🇷 Greek
• 🇧🇷 Brazilian Portuguese
• 🇮🇩 Indonesian
• 🇹🇼 Traditional Chinese (TW)
• 🇸🇰 Slovak

How to contribute with your translation

You can help translate by opening the resources/i18n/caesium_en_US.ts with QtLinguist or any XML editor. Rename it to your language (e.g. caesium_it_IT.ts) and translate all the sentences. Then you can start a pull request with your translated file.
See this pull request as an example.
Thanks to all the people who contributed.