UMD (.umd) is a Chinese e-book format developed for mobile phones in the 2000s. It was popular for reading novels on early smartphones and feature phones, particularly in China. UMD files store text content and optional images in a compact binary format.

Are my UMD files uploaded?

No. Files you open from your device stay on your device and are parsed locally. Nothing is sent to the server.

Why is there no sample UMD file?

UMD is a niche format primarily used in the Chinese mobile market. Creating a valid UMD file requires specialized tools. Please upload your own .umd file to preview it.

Elysia Tools

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UMD Viewer

Free online UMD viewer. Open and preview UMD e-books (.umd) directly in your browser — no upload, no software.

.umd

Sample UMD E-book

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About this file format

UMD (.umd, Universal Mobile Document) is a Chinese e-book format that was popular on mobile phones in the 2000s and early 2010s. It was developed for reading novels and text content on early smartphones and feature phones, particularly in the Chinese market. UMD files use a compact binary format that stores text content, chapter information and optional cover images. While largely superseded by EPUB and TXT formats, UMD files remain in personal archives of Chinese literature.

UMD Viewer

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