Prisma

Erogamer · Entertainment

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7.0

android

AI summary

Multimedia catalog and reader for imageboards, creator galleries, manga, and light novels, with downloads, favorites, offline reading, and content filters. The latest update redesigns provider and favorites screens, adds cached-media cleanup, and fixes full-resolution Wallhaven images.

Generated by AI. May contain inaccuracies.

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About this app

Prisma is a unified, resource-optimized multimedia viewer and catalog reader built with Flutter. It brings together popular booru imageboards, creator galleries, manga repositories, and light novel libraries into a cohesive, fluid Material 3 interface across Android, Linux, Windows, and macOS.

Core Capabilities: Media & Feed Browsing: Adaptive Layouts: Pinterest-style masonry grid, fixed aspect ratio grids, and compact list modes. Hardware-Accelerated Media Player: High-definition video player powered by media_kit (mpv), featuring gesture-driven controls, audio track toggles, and seamless looping. Deep Zoom & Notes Overlay: Interactive high-resolution viewer with pinch-to-zoom, translation notes overlay, and multi-asset carousels.

Manga & Light Novel Hub: Integrated Catalogs: Direct access to titles from MangaDex, MangaLib, and RanobeLib. Versatile Reading Modes: Webtoon: Smooth vertical continuous scroll with hardware-accelerated image pipeline. Manga Reader: Traditional right-to-left (RTL) and left-to-right (LTR) page-by-page viewing. Light Novel Reader: Dedicated typography engine with custom font scaling, line height, and reader color schemes. Personal Library Management: Track reading status (Reading, Plan to Read, Completed, On Hold, Dropped) with automated chapter progress synchronization and offline reading support.

Tag Engine & Discovery Sub-Millisecond Tag Autocomplete: Instant search suggestions across millions of booru tags. Complex Query Syntax: Multi-tag queries, boolean exclusions (-tag), exact matching, rating filters, and source switching without resetting parameters. Artist Hub: Explore creator portfolios with direct integration into creator platforms. Performance & Memory Architecture Sliding-Window Memory Management: Active post carousel isolates memory consumption to immediate adjacent pages ( ± 1 ), aggressively evicting distant decoders from RAM.

Smart Memory GC & Watchdog: Proactively responds to system memory pressure signals and keeps application footprint under tight control during extended browsing sessions. Built-in Resource Monitor & Floating HUD: Real-time diagnostic overlays displaying physical RSS RAM, Peak usage, image cache allocations, process CPU %, and engine frame rates (FPS).

Offline Storage & Sync: Configurable Downloader: Template-based file organization (e.g. {Artist}/{ID}) with integrated download manager. Cross-Service Bookmarks: Local collections, favorite posts, and Pawchive two-way synchronization. Strict Content Filtering: Global blacklist, whitelist, and discreet blur filters for sensitive material.

Supported Sources: Booru & Art Imageboards: Provider Protocol / API Gelbooru XML / JSON API Rule34 Gelbooru-based API Safebooru Gelbooru-based API Realbooru HTML / Scraper e621 / e926 Native REST API Pixiv Session Auth Pawchive Creator Sync

Manga & Light Novels: Provider Type Content MangaDex Manga International scanlations, multi-language chapter support MangaLib Manga Comprehensive catalog with volume indexing RanobeLib Light Novel Formatted text reader with rich chapter styling.

License:

MIT

multimedia viewer imageboard browser manga reader light novel reader offline open source

What's new

v4.2.0Oct 19, 2026

User Interface & Navigation: Desktop Navigation Customization: Added full control over the navigation position on desktop (Left, Right, or Bottom) directly from Appearance Settings, allowing flexible layout customization for ultrawide monitors and personal ergonomic preferences.
Redesigned Providers Screen: Replaced the legacy providers list with a sleek liquid glass interface featuring real-time search, category filter pills ("All", "Enabled", "Booru", "Art/Media"), and an adaptive multi-column card layout on widescreen displays.
Favorites Tab Redesign: Liquid glass navigation pills ("All", "Offline", "Artists", "e621"), modern content filter capsules ("All", "Videos", "Images") with item counters, and custom provider filter dropdown.
Offline Media Cleanup: Added a one-tap cached media cleanup dialog to free storage without removing posts from favorites, along with sorting capsules (Date, Size, Artist).
Settings Gear Button: Restored gear button visibility across all themes (Light, Dark, and AMOLED) and introduced a circular reveal transition animation when opening settings.
Fixes & Stability: Mobile Navigation Overlay Fix: Fixed an issue on mobile where opening provider management, provider health check, or add/edit provider dialogs from Settings would open beneath the modal settings sheet instead of on top.
Floating Bottom Bar Fix: Resolved floating navigation bar positioning and jumping behavior on responsive desktop window resizing.
Wallhaven Full-Resolution Media: Fixed full-resolution image loading when viewing posts (previously loaded compressed preview images).
Provider Cleanup: Removed obsolete non-working providers from the UI.
Architecture & Performance: Modular Codebase Decomposition: Decomposed heavy media viewers, post details, manga reader, onboarding screens, and artists screen into modular sub-widgets for improved frame rates, reduced memory footprint, and enhanced maintainability.