Ebook Converter

EPUB, CBZ, and PDF: local best-effort conversions. MOBI/AZW and similar stay deferred.

Local file processing
Supported offline subset: EPUB ↔ HTML/PDF/CBZ, CBZ → EPUB/PDF, PDF → EPUB/HTML (PDF text extract is limited). Kindle formats (MOBI, AZW, …) are not available without a large proprietary stack.

Source format

Drop a file to auto-detect

Drop a file here, or choose from your device

Supported:EPUBCBZPDFSee all formats

Your files stay on your device. Everything is processed locally in your browser. No uploads, no tracking.

Privacy & how it works

How the Ebook Converter works

Convert EPUB, CBZ comic archives, and PDF locally with clear fidelity limits. Kindle formats (MOBI, AZW, …) are omitted until a real client-side codec exists.

EPUB uses JSZip plus a minimal EPUB2 writer. CBZ is a ZIP of images. PDF↔EPUB/HTML is best-effort: PDF text extraction is limited without a heavy PDF text stack, so PDF exports may be stubs with title/page count. Always review the download.

Popular conversions

EPUB to HTML

EPUB to PDF

CBZ to EPUB

PDF to EPUB

Why local browser processing is safer

Traditional cloud converters upload a file to a remote system before processing it. Fluxed processes files locally in your browser instead. Your files stay on your device. No uploads, no tracking, and no account.

Frequently asked questions

Can I convert MOBI or AZW?

Not offline in Fluxed. Those formats need specialised libraries that are not bundled for a privacy-first WASM build yet.

Are ebooks uploaded?

No. Processing stays in your browser.

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