EPUB to AVIF Converter

Convert EPUB pages to AVIF images — free and online

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Next-Gen Compression

AVIF from EPUB pages offers dramatically smaller files than JPEG with equal or better visual quality — the future of web images.

Web-Native Format

AVIF is supported by all major browsers — EPUB page renders in AVIF are ready for web publishing without compatibility worries.

Secure Conversion

Uploaded EPUB files are deleted after processing. AVIF images are automatically purged from servers within 24 hours.

How to convert EPUB to AVIF

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose avif or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your avif file right afterwards

About formats

EPUB (Electronic Publication) is an open ebook standard originally developed by the International Digital Publishing Forum (IDPF) and now maintained by the W3C following the organizations' merger in 2017. The first version carrying the EPUB name was approved in October 2007 as a successor to the Open eBook Publication Structure (OEBPS). An EPUB file is essentially a ZIP archive containing XHTML or HTML5 content documents, CSS stylesheets, images, fonts, and metadata organized according to the Open Packaging Format and Open Container Format specifications. The current major version, EPUB 3, supports reflowable and fixed-layout content, embedded multimedia, JavaScript interactivity, MathML equations, and rich accessibility features including semantic markup and media overlays for synchronized text and audio. A defining advantage is universal device support — unlike proprietary formats, EPUB works natively on virtually every non-Kindle e-reader, tablet, and reading application, from Apple Books and Google Play Books to Kobo and dozens of third-party apps. The reflowable text model is another core strength, automatically adapting pagination, font size, and margins to match any screen dimension and user preference. EPUB's open specification and active W3C stewardship ensure long-term preservation and vendor independence, making it the de facto standard for digital publishing across libraries, academic institutions, and commercial retailers worldwide.
Initial release: October 2007
AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019

Frequently Asked Questions

Why convert EPUB to AVIF?

AVIF delivers exceptional image quality at dramatically smaller file sizes than JPEG or PNG — ideal for web-ready ebook page previews and thumbnails.

What browsers support AVIF?

Chrome, Firefox, Opera, Edge, and Safari (16.4+) all display AVIF images natively. Android and iOS support is also widespread.

Is AVIF better than HEIC for web use?

AVIF has broader browser support than HEIC and is royalty-free — making it the better choice for web-facing ebook page images.

Does AVIF preserve text sharpness?

AVIF excels at preserving sharp edges and text — EPUB page renders with lots of text look crisp even at high compression ratios.

Is EPUB to AVIF free?

Yes, free on Convertio. Premium plans provide faster processing and higher limits for users with larger or more frequent needs.