An open, efficient desktop reading app that supports multiple ebook and image formats.

Mcat is a desktop reading app designed to provide you with a customizable, efficient, and focused reading experience. All reading features can run offline locally, giving you full control over your data.<h2 class="bb_tag" >Supported formats:</h2>EPUB, PDF, TXT, MarkDown, JSON, HTML, XML, CSV, JPG, PNG, WebP, GIF, CBZMore formats are planned for future support.<h2 class="bb_tag" >Key features:</h2><ul class="bb_ul"><li>Customizable typography – Adjust font size, line height, margins, alignment, background color, text color, letter spacing, and more. Supported for both EPUB and plain text readers.</li><li>Customizable window – Adjust window corner radius, transparency, and optionally hide the window border.</li><li>Multi-color highlighting – Supports multiple highlight colors and line styles (background highlight, underline, dotted underline, double underline), with customizable text color.</li><li>Note system – Manage notes for the current book and globally, with quick navigation to note locations.</li><li>Replacement rules – Supports custom text replacement rules to help clean up typographic noise.</li><li>Chapter rules – Supports custom chapter recognition rules to adapt to text files in different formats.</li><li>Noise word filtering – Supports filtering common noise words in text.</li><li>Style presets – Supports saving and switching between multiple reading style configurations.</li><li>Local-first – All reading data is stored locally by default, never uploaded to any remote server.</li><li>Private space – Password-protect sensitive books.</li><li>LAN transfer – Quickly share books over the same network.</li><li>WebDAV import – Supports importing books from WebDAV servers.</li><li>Reading stats – Tracks reading time, word count, and open count, can be disabled in settings.</li><li>Global search – Supports full-text search across all books.</li></ul><h2 class="bb_tag" >More features:</h2>Tag management, Group management, Favorites, Reading history, Batch import, Wallpaper &amp; screensaver, Mouse trail, Keyboard shortcuts, Edit mode, Stealth modeMcat is still growing steadily. Your feedback will help shape what it becomes next. We look forward to hearing from you.

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