Convert WebP Images to JPEG or PNG for Kindle, EPUB, and KDP Publishing
Kindle Direct Publishing and the EPUB format both have documented WebP support gaps — KDP's content guidelines specify JPEG or GIF for interior images, and many EPUB readers including older Kindle firmware versions do not render WebP at all. Deliteful converts WebP images to JPEG or PNG so ebook interiors display correctly across every reading device and platform.
KDP's image requirements for Kindle ebooks specify JPEG or GIF for interior images embedded in the manuscript. WebP images inserted into a DOCX or HTML source file before KDP conversion frequently produce blank image placeholders in the final Kindle file. The same issue affects EPUB distribution through Apple Books and Kobo for titles targeting older device firmware. Converting all interior images to JPEG before manuscript preparation eliminates these rendering failures before they reach readers.
For ebooks with diagrams, charts, infographics, or illustrated elements where image quality and sharp edges matter more than file size, PNG is the better choice — its lossless compression preserves text within images and fine line art cleanly. For photographic content inside travel guides, cookbooks, or coffee table ebooks, JPEG keeps file sizes manageable for download. Batch conversion handles up to 50 images, covering a full chapter's worth of interior illustrations in one job.
How it works
- 1
Upload WebP interior images
Add the WebP images destined for your ebook manuscript — illustrations, diagrams, photos, or chapter headers — up to 50 files.
- 2
Select JPEG or PNG
Choose JPEG for photographic content, PNG for diagrams, charts, or illustrations with text where lossless quality is required.
- 3
Replace images in your manuscript
Swap the converted files into your DOCX, HTML, or EPUB source before final KDP or distributor upload.
Frequently asked questions
- Does KDP support WebP images in Kindle ebooks?
- No. KDP's content guidelines for Kindle ebook interiors specify JPEG or GIF. WebP images in manuscript source files frequently produce blank placeholders in the final Kindle file after conversion.
- Do EPUB readers support WebP images?
- EPUB 3 added WebP to its supported image formats, but reader support is inconsistent — older Kindle firmware, Kobo devices, and some EPUB validators do not support WebP. JPEG and PNG are universally safe for ebook distribution.
- Should I use JPEG or PNG for ebook interior images?
- Use JPEG for photographs and full-color imagery where file size affects download times. Use PNG for diagrams, charts, maps, and any image containing text, where lossless compression prevents quality degradation.
- Can I convert all images for a full chapter at once?
- Yes. Upload up to 50 WebP files per batch and download the full converted set in JPEG or PNG — enough for a complete chapter or short ebook in one job.
Create your free Deliteful account with Google and convert your ebook interior images to KDP-ready JPEG or PNG before your next manuscript upload.