ACBR

ACBR processes CBZ, CBR, CB7, PDF, EPUB files and image formats including JPG, PNG, WebP, and AVIF. It provides single and double page modes, image rotation, an integrated audio player, metadata editor, RSS reader, and partial gamepad support. The interface is available in English, Spanish, Russian, German, Arabic, and Filipino.

★★★★★

4.0(1 ratings)

• Comic file conversion. This function transforms image collections or CBZ, CBR, CB7, PDF, and EPUB files to any other supported comic format. The process preserves page order and permits adjustments to compression, image dimensions, and final file quality. It is used to standardize collections into a single format.
• Image resizing and extraction. Takes comic files or image folders and resizes every page to a specific resolution, either maintaining aspect ratio or forcing exact width and height. Extraction separates each comic page into individual image files (JPG, PNG, WebP) while preserving original numbering.
• Color palette extraction. Analyzes any image or comic page and generates an automatic palette of dominant colors. The tool displays hexadecimal and RGB values for each color, sorted by frequency. This assists illustrators and designers who need to replicate color schemes from a specific work.
• Page and thumbnail template creation. Automatically generates predefined comic album layouts including margins, bleeds, and panel grids. Also produces contact sheets that display all comic pages in a reduced grid, enabling rapid preview of complete content.
• Public domain books and audiobooks search. Connects to online repositories hosting copyright-free literary works and audiobooks. Users search by title, author, or genre and open content directly in the integrated player or text viewer without external browsers. This integration extends program usage beyond comics.
• RSS reader with content expansion. Subscribes to RSS feeds from podcasts, websites, and blogs. Each feed item initially shows only the description, with a button to expand or collapse full content. This organization improves legibility of news lists and provides quick access to essential information without excessive scrolling.
• Radio stream player. Integrates a list of online radio stations broadcasting via audio streams (MP3, OGG, AAC formats). Users add custom stations by entering the stream URL. The program plays audio in the background while reading comics, with volume and pause controls.
• Comic metadata editor. Modifies embedded information in CBZ, EPUB, and PDF files including title, author, series, volume number, publisher, publication date, synopsis, and tags. Metadata saves to recognized standards (OPF for EPUB, XMP for PDF, .xml or .txt files in CBZ), ensuring compatibility with other comic readers and bibliographic managers.
• Page rotation and display modes. Provides individual page rotation in 90-degree increments, correcting scans with incorrect orientation. Display modes include single page, double page (for comics with original two-page spreads), fit to width, fit to height, and full screen. These options apply in real time without file reprocessing.
• Gamepad support. Navigates comic pages using compatible controllers (Xbox, PlayStation, generic). Directional buttons or sticks advance or reverse pages, triggers jump to beginning or end, and action buttons open menus or toggle full screen. This facilitates reading on devices connected to televisions or projectors.
• Audio player with subtitles. Integrates a player handling MP3, OGG, WAV, and FLAC files with support for synchronized subtitles in SRT, VTT, or LRC formats. Subtitles display over the comic interface or in a floating window, useful for illustrated audiobooks or scored comics, with formatting tags (italics, bold) interpreted correctly.
• Batch image conversion and resizing. Accepts thousands of image files and converts them to formats such as WebP or AVIF, reducing storage size without significant quality loss. Also changes resolution of all images in a folder in one operation while maintaining subfolder structure. This function complements comic tools but operates independently on any image collection.

Development began in 2015 by Álvaro García, an independent developer specializing in cross-platform software. The application was initially written in C# with Windows Forms, later migrated to .NET Core, and now uses .NET 6/7, enabling execution on both Windows and Linux. Programming incorporates third-party libraries for PDF handling (PdfiumViewer), EPUB (VersOne.Epub), and compressed archive formats.

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