CIViewer (Comic Image Viewer)

CIViewer (Comic Image Viewer) is a high-performance, modern image viewer built with Rust and GTK4 (via Relm4). Designed for a seamless viewing experience, it supports browsing local image directories as well as images directly inside ZIP archives without decompression.

Features

• Fast & Lightweight: Built with Rust and GTK4 for speed and efficiency.
• Archive Support: Direct viewing of images within ZIP files.
• Reading Modes:
  • Single page view.
  • Spread view (two pages) ideal for manga/comics.
  • Support for Right-to-Left (RTL) reading direction.
• Efficient Navigation: Sidebar file tree for quick directory switching.
• Customizable: Settings for shortcuts and view preferences saved automatically (powered by PoloDB).
• Format Support: JPEG, PNG, GIF, BMP, WebP.

Install

# Debian/Ubuntu
sudo apt install ./civiewer_X.X.X-X_amd64.deb

# Fedora/RHEL/CentOS
sudo dnf install ./civiewer-X.X.X-X.x86_64.rpm

Build

Requirements

• Docker

Build with Docker

A Dockerfile and build script are provided for a consistent build environment.

./build/build.sh

Development

This project is developed with the assistance of Gemini 3 Pro.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Copyright (c) 2026 arianpg. This software is provided "as is", without warranty of any kind.

Third-Party Licenses

This application includes open-source software.

• GTK4, GLib, Pango, Cairo, GdkPixbuf: LGPL v2.1 or later.
• MinGW-w64 Runtime: GPL v3 with GCC Runtime Library Exception.
• Rust Crates: Mostly MIT or Apache-2.0.

See ThirdPartyNotices.txt included in the distribution for full license details.