Does PDF to EPUB conversion upload my file?

No. The entire conversion runs in your browser using PDF.js for text extraction and a client-side EPUB builder. Your file never leaves your device.

What is the difference between PDF and EPUB?

PDFs have fixed layouts: text and images stay at exact positions regardless of screen size. EPUB is a reflowable format where text reflows to fit any screen, making it far more readable on e-readers and small screens.

Will images from the PDF appear in the EPUB?

Text-based content is extracted and preserved. Embedded images may be included depending on how they are referenced in the PDF structure. Complex graphical layouts are simplified in the conversion.

Can I convert a scanned PDF to EPUB?

Scanned PDFs contain image data rather than text, so accurate text extraction requires OCR. Without OCR the resulting EPUB will have limited or no text content. Use a digitally created PDF for best results.

Will the chapter structure be preserved?

If the PDF uses heading styles or bookmarks, these are used to create EPUB chapters. For PDFs without explicit structure, each page becomes a section in the EPUB.

What EPUB version is produced?

The output conforms to the EPUB 3 specification, which is supported by all modern e-readers including Kindle (via conversion), Kobo, Apple Books, and desktop readers like Calibre.

Can I open the EPUB on a Kindle?

Kindle devices do not natively read EPUB files. Transfer the EPUB to Calibre to convert it to MOBI or AZW3 format, or use the Send to Kindle service which accepts EPUB files via email.

Will fonts and styling be preserved?

Basic text structure (paragraphs, headings) is preserved. Complex PDF styling such as custom fonts, multi-column layouts, and decorative formatting is simplified in the conversion to standard EPUB styles.

Is there a page or file size limit?

There is no enforced limit, but larger PDFs will take longer to process. Files up to 200 pages and 20 MB typically convert quickly in a modern browser.

PDF to EPUB

Convert a PDF to an EPUB e-book by extracting text content.

Drop a PDF here or click to browse

PDF files only

Limitations

Images and formatting are not preserved. Text content only.

The EPUB is a valid EPUB3 file compatible with most e-readers and reading apps.

All processing runs locally in your browser: no files are uploaded.

How to convert PDF documents to EPUB eBook format free without uploading

PDFs are great for print-accurate documents but poor for reading on e-readers and phones where screen sizes vary. EPUB is a reflowable format: text wraps and resizes to fit the screen, making long documents far more comfortable to read. AlteredIdea's PDF to EPUB converter extracts text from your PDF using PDF.js and packages it into a valid EPUB 3 file entirely within your browser.

The resulting EPUB can be opened directly in Calibre, Apple Books, Kobo, or any other EPUB-compatible reader. Because conversion happens locally, your document never touches a server: ideal for books, reports, and other text-heavy documents you want to read on the go without compromising privacy.

Step-by-step guide

1
Upload your PDF
Drop your PDF onto the upload zone or click to browse. The tool extracts text content from each page to prepare it for EPUB conversion.
2
Configure EPUB settings
Set the book title, author name, and optionally choose font size preferences for the reflowable output.
3
Click Convert to EPUB
The tool extracts text from each PDF page, structures it as EPUB chapters, and packages everything according to the EPUB 3 standard.
4
Wait for processing
Conversion is fast for most documents. Larger PDFs with many pages take a few seconds as each page's text is extracted and structured.
5
Download your EPUB file
The finished .epub file downloads to your device. Open it in any EPUB reader: Apple Books, Kobo, Calibre, or a browser extension.

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Frequently Asked Questions

Does PDF to EPUB conversion upload my file?: No. The entire conversion runs in your browser using PDF.js for text extraction and a client-side EPUB builder. Your file never leaves your device.
What is the difference between PDF and EPUB?: PDFs have fixed layouts: text and images stay at exact positions regardless of screen size. EPUB is a reflowable format where text reflows to fit any screen, making it far more readable on e-readers and small screens.
Will images from the PDF appear in the EPUB?: Text-based content is extracted and preserved. Embedded images may be included depending on how they are referenced in the PDF structure. Complex graphical layouts are simplified in the conversion.
Can I convert a scanned PDF to EPUB?: Scanned PDFs contain image data rather than text, so accurate text extraction requires OCR. Without OCR the resulting EPUB will have limited or no text content. Use a digitally created PDF for best results.
Will the chapter structure be preserved?: If the PDF uses heading styles or bookmarks, these are used to create EPUB chapters. For PDFs without explicit structure, each page becomes a section in the EPUB.
What EPUB version is produced?: The output conforms to the EPUB 3 specification, which is supported by all modern e-readers including Kindle (via conversion), Kobo, Apple Books, and desktop readers like Calibre.
Can I open the EPUB on a Kindle?: Kindle devices do not natively read EPUB files. Transfer the EPUB to Calibre to convert it to MOBI or AZW3 format, or use the Send to Kindle service which accepts EPUB files via email.
Will fonts and styling be preserved?: Basic text structure (paragraphs, headings) is preserved. Complex PDF styling such as custom fonts, multi-column layouts, and decorative formatting is simplified in the conversion to standard EPUB styles.
Is there a page or file size limit?: There is no enforced limit, but larger PDFs will take longer to process. Files up to 200 pages and 20 MB typically convert quickly in a modern browser.

AlteredIdea vs alternatives

vs Adobe Acrobat: Free, no subscription needed, works entirely in your browser.

vs iLovePDF / SmallPDF: No file uploads to servers: your PDFs never leave your device.

vs desktop software: No install required. Works on any device with a browser.

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