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convertexa

EPUB → HTML

EPUB to HTML converter

convertexa converts EPUB files to HTML locally in your browser using a dedicated document engine. Nothing is uploaded: the file is read, converted and handed straight back to you as a download.

  • Free, no sign-up
  • Nothing is uploaded
  • Works offline
Quality
Re-encoded
Runs
In your browser
Max input
30 MB
Status
limited

Drop a file to convert

Everything happens on your device — nothing is uploaded.

or paste with Ctrl+V

How to convert EPUB to HTML

  1. 1 Drop your EPUB here.
  2. 2 Choose the output format.
  3. 3 Convert and download the result.

About EPUB and HTML

EPUB is unpacked, the spine is followed and the chapters are concatenated.

HTML is rendered in a sandboxed document before printing to PDF.

EPUB files are read by the convertexa engine that ships with this page, so the conversion is identical whether you use this tool or the general converter. The output is produced with the same codec settings for every visitor, which means the same input always produces the same result.

Limitations

  • Advanced EPUB features (fixed layout, scripted overlays) are not reproduced.

Frequently asked questions

How do I convert a EPUB file to HTML?

Add your EPUB file to the box above. convertexa detects the format from the file content, applies the EPUB to HTML conversion and gives you the result to download. The whole operation runs inside your browser.

Are my EPUB files uploaded anywhere?

No. The conversion runs in a sandboxed worker on your own device. Your file never leaves the browser, and nothing is stored on a server.

Is the EPUB to HTML conversion lossless?

No. HTML is a re-encoded format, so some data is discarded to reach the target format. EPUB is unpacked, the spine is followed and the chapters are concatenated.

Is there a size limit?

For reliable results keep the input under 30 MB. Very large files run out of memory in the browser rather than failing quietly.

Which browsers are supported?

Any current version of Chrome, Edge, Firefox or Safari on a desktop. The conversion engines need WebAssembly and Web Workers, both of which are standard since 2018.