EPUB Cover Converter

About This Tool

This tool focuses on EPUB cover generation and metadata integration for digital publishing workflows. It accepts an existing EPUB or separate cover assets and metadata files, then outputs a ready-to-distribute EPUB or a standalone cover image. Authors, editors, and publishers use it when preparing titles for storefronts to ensure visual consistency across catalogs. The approach emphasizes accessibility, legibility, and brand cohesion by applying rules for image size, contrast, and color balance.

Conceptually, the system separates content from presentation: a cover image is generated or updated, while metadata is parsed and re-embedded into the EPUB package. It does not alter the book's text or structure. It uses deterministic layout heuristics to center key artwork, preserve safe margins, and avoid clipping on various readers. It supports both EPUB 2 and EPUB 3, updating the cover resource and the OPF guide entries.

Key value includes reducing time-to-publish, lowering design costs, and improving discoverability through consistent artwork and metadata alignment. Typical use cases include indie authors releasing first titles, small presses batch-processing catalogs, and librarians digitizing collections. Core features cover cover image generation, cover embedding in EPUB, metadata synchronization, validation checks for image format and size, and export of updated files or separate assets.

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