Choose the PDF
Use a document with selectable text and a clear reading order when possible.
PDF → AZW3
AZW3 supports richer styling than legacy MOBI and works with many Kindle workflows. Converting a PDF still requires the fixed pages to be interpreted as an ebook, so simple text-first PDFs produce the most predictable result.
Open the free converter →Use a document with selectable text and a clear reading order when possible.
Upload the file, choose AZW3 and begin the conversion.
Review the converted file in a Kindle-compatible reader before transferring it.
Use it when your Kindle workflow supports newer formatting and CSS features.
Use MOBI only when an older device or application specifically requires it.
If you control the source, a well-structured EPUB generally converts more cleanly than PDF.