iqdb

iqdb is a specialized reverse image search engine designed for locating anime, manga, and game-related artwork across multiple dedicated image databases. Users can upload an image from their local device or provide a direct URL to a thumbnail or full-size image, and the service will scan through a curated list of popular image repositories to find either the exact same image or visually similar versions. The supported sources include Danbooru, which focuses on anime artwork with detailed tagging; Konachan, which specializes in anime wallpapers; yande.re, known for high-resolution scans of illustrations; Gelbooru, another major anime artwork repository; Sankaku Channel, which covers anime, manga, and game images; e-shuushuu, a board dedicated to anime, manga, and game images; Zerochan, a large collection of anime images and wallpapers; and Anime-Pictures, which hosts anime pictures and wallpapers. Each of these sources can be queried individually using a simple search mode, allowing the user to narrow down results to a specific database. The search process is straightforward: after providing an image file or URL, the system compares features such as color distribution, composition, and texture against the indexed images in each database, returning matches sorted by similarity. The service also offers an optional “ignore colors” mode, which performs searches based on shape and structure rather than color, useful for finding black-and-white sketches or recolored versions of the same artwork. Supported file formats are JPEG, PNG, and GIF, with a maximum file size of 8192 kilobytes and maximum image dimensions of 7500 by 7500 pixels, ensuring that high-quality images can be processed without downsizing. The tool is particularly valuable for tracing the original source of an