Free online FB2 to WEBP converter

Source format

FB2 is the FictionBook 2.0 e-book format, an XML-based format designed for storing literary texts with rich structural markup. It is widely used in Russian-language e-book collections and by readers who want books with chapters, notes, epigraphs, and other semantic elements preserved. FB2 is best suited for novels, essays, and other text-heavy publications rather than fixed-layout documents.

Target format

WEBP is a modern image format developed by Google. It supports lossy and lossless compression, transparency, and animation, and is commonly used for web graphics because it often produces smaller files than JPEG or PNG at similar visual quality. In this conversion, the FB2 book is typically rendered into one or more page images and then saved as WEBP files.

How to perform the conversion

Because FB2 is a text e-book format and WEBP is an image format, the conversion is not a direct format swap. The usual workflow is to render the FB2 content as pages or screenshots, then export those pages as WEBP images. If you only need a quick result, you can convert the file on 101convert.com for free without installing any software.

1. Open the FB2 file in an e-book reader or converter that can display the book as pages, such as Calibre, FBReader, or Cool Reader.
2. If the software supports export or printing, choose File → Print or File → Export and send the pages to an image-capable workflow.
3. Save each page as an image format first if needed, such as PNG or JPEG. Many tools can export page images directly; if not, use a virtual printer or screenshot capture.
4. Convert the resulting images to WEBP using an image editor or batch tool. For example, in ImageMagick you can run magick input.png output.webp.
5. If you have multiple page images, batch-convert them with a pattern such as magick *.png pages_%03d.webp or use a dedicated batch image converter.

In Calibre, you can also open the FB2 file, convert it to a readable intermediate format, and then export page images through a separate image tool if your goal is WEBP output. For a single-page cover or illustration extracted from FB2, you may be able to save that image directly as WEBP from an editor such as GIMP or Photoshop.

Notes on quality and limitations

FB2 to WEBP is a format mismatch: FB2 contains structured text, while WEBP stores raster images. That means the conversion usually loses text reflow, searchability, and selectable text. The result is best viewed as a set of page images, not as an editable e-book.

Image quality depends on the rendering resolution used when the FB2 pages are exported. Higher resolution produces sharper text but larger WEBP files. If the source book contains complex formatting, embedded images, or unusual fonts, make sure the reader or converter has those fonts available to avoid layout changes. For books intended for reading on e-readers, converting FB2 to EPUB or MOBI is usually more appropriate; WEBP is mainly useful when you specifically need page images or cover art in a compact web-friendly format.