Free online WEBP to EPUB converter

Source format: WebP

WebP is a modern image format developed by Google for efficient web graphics. It supports lossy and lossless compression, transparency, and even animation. WebP is widely used on websites, in content management systems, and in apps where smaller image sizes help improve loading speed and reduce bandwidth use.

For a WebP to EPUB conversion, the WebP files are usually treated as page images or illustrations that will be placed into an ebook.

Target format: EPUB

EPUB is a widely supported ebook format used by e-readers, reading apps, libraries, and publishing tools. It packages text, images, and metadata into a reflowable or fixed-layout publication. Its main advantages are broad compatibility, support for embedded images, and flexible presentation on different screen sizes.

When converting images to EPUB, the result is typically a picture-based ebook or a fixed-layout EPUB, depending on the tool used and how the images are arranged.

How to perform the conversion

The best method depends on whether you want one image per page or a simple image collection inside an ebook.

Using the 101convert.com online converter:

1. Open the WebP to EPUB converter on 101convert.com.
2. Upload your .webp file or multiple WebP images if the tool supports batch input.
3. Start the conversion.
4. Download the resulting .epub file.

This is the easiest option if you want to convert online for free without installing software.

Using desktop software for more control:

1. Open an ebook editor or document tool that can assemble images into EPUB, such as Calibre, Sigil, or LibreOffice with EPUB export support.
2. Import the WebP images into a document or ebook project.
3. Arrange the images in the desired order, adding captions or text if needed.
4. Export or save the project as File → Export As → EPUB or the equivalent EPUB option in your software.

If your software does not accept WebP directly, first convert the images to a more widely supported format such as PNG or JPEG, then build the EPUB from those files.

Notes on quality, compatibility, or limitations

EPUB is not a native image container in the same way as a gallery or archive format, so a WebP-to-EPUB conversion usually creates an ebook wrapper around the images rather than a true document with editable text.

Compatibility can vary by reader. Some EPUB readers handle embedded images and fixed-layout books better than others, while older apps may have limited support for complex layouts. If your WebP images use transparency or animation, note that animation is not preserved in standard EPUB output, and transparency support depends on the reader.

For best results, use clear image dimensions and keep file sizes reasonable so the EPUB remains easy to open on e-readers and mobile devices.