How to Send a PDF or EPUB to a Kindle
A Kindle can take a document you did not buy from a shop, but the route matters. Some documents arrive with crisp text that reflows, and some arrive as unreadable pictures or fail silently. The difference comes from the format you send and the way you send it.
The PDF to EPUB converter turns a text-based PDF into a file a reader can reflow. This article covers the transfer step once you have a file ready.
Quick answer
Send an EPUB by email to your Kindle address, or connect by USB and copy the file. EPUB reflows and is the better choice for reading; PDF is fixed and stays as small pages. Email sending requires adding your own address to the approved sender list first, or the message is silently discarded.
Find the address you send to
Every Kindle has an address assigned to it, separate from your ordinary email. It appears in the device settings and in your account’s manage-devices page alongside the device name. Sending to this address delivers the file to that device, not to your phone or tablet.
The approved sender list is what catches most people. Your account only accepts documents from addresses you have added yourself, so sending from a new address looks like it worked and then never arrives. Add the sender before the first transfer.
EPUB or PDF
EPUB is a flow of text: the reader sets the font size and line length, so the document reflows to fit the screen. PDF is a fixed page. A PDF zoomed to a readable size needs horizontal scrolling on a small screen, which is workable for a chart or a form and tiring for a novel.
If the source is a text-based PDF and you are going to read it properly, converting first is worth the extra step. If the PDF is a scan, converting it usually makes it worse rather than better, and sending the PDF as it stands is the more honest choice.
The two transfer routes
- Email: send the file as an attachment to the device address from an approved sender. This works from a phone or a computer.
- USB: connect the Kindle, open its storage folder, and copy the file into the documents folder. This avoids email size limits.
Email has an attachment size limit that a large scanned PDF can exceed. USB has no such limit, so it is the reliable route for big files.
When the file does not appear
Check the sender list first. Then look in the device’s library filter, because a transferred document sometimes sits under a separate section rather than the main list. If the file arrived but shows as a blank or garbled page, the format was wrong for the device rather than the transfer having failed.
If the conversion is the problem, read Why PDFs Convert Badly to EPUB. For the wider choice between formats, see PDF or EPUB? Choosing a Format for Your E-Reader.
Open PDF to EPUB, convert the book, then add your sender address and send the file to the device.
Common questions
Why did my document never arrive on my Kindle?
The usual cause is the approved sender list. Your account only accepts documents from addresses you have added, so mail from a new address is discarded without a clear error. Add the sender, then resend. Check the library filter afterwards, since transferred documents can sit in a separate section.
Should I send EPUB or PDF to a Kindle?
Send EPUB when you intend to read the text, because it reflows to the font size and screen. Send PDF when the layout must stay fixed, such as a form or a chart. A PDF zoomed to a readable size needs horizontal scrolling on a small screen, which is tiring for long text.
Is email or USB better for transferring files?
Email is quicker and works from a phone, but has an attachment size limit that a large scanned PDF can exceed. USB has no such limit and is the reliable route for big files. Both deliver to the device itself rather than to your other readers.