Some people prefer ebooks to physical copies because they are easier to collect and transport. There are numerous formats in which ebooks can be downloaded and read, but EPUB and PDF remain the most popular. A proprietary AZW1 and AZW3 file format is used primarily by an Amazon Kindle. So, if you’re thinking about getting a Kindle or already have one, it’s worth noting that you can transfer ebooks and other documents in unsupported formats to it.
The Kindle remains at the top of the limited options available when looking for an e-reader. It is one of the most well-known devices with an e-Ink display, and newer models, such as the Kindle Scribe, make it even more desirable. However, using any Amazon product entails being trapped within a metaphorical walled garden. The common misconception is that you can only read books that you rent or buy from the Amazon store, which may discourage some people from switching to a Kindle, particularly if their old hard disks are piled high with countless PDFs and ebooks.
If you want to keep your prized collection of ebooks or PDFs close at hand, you can read PDFs and other digital documents on your Kindle using a very simple technique. The first method is to transfer PDF files to your Kindle.
How to transfer PDFs to Amazon Kindle using email

With so many streaming services taking over our lives, the Kindle’s download-to-view method appears to be a thing of the past. However, this is one of the most significant benefits of owning and using a Kindle e-reader. You can download any ebook to your reader and take it with you even if you are not connected to the internet.
For more than a decade, Amazon Kindle devices have included a built-in PDF reader. However, due to the peculiar software used by the Kindle, you cannot directly transfer files using a wired or wireless connection option. You must first transfer a PDF file to your Kindle in order to view it.
To transfer the PDF file, send it to your Send-to-Kindle email address. This email address is specific to your Amazon account and is only used to import documents into your Kindle library.
Sending files to your Kindle library

Start your Kindle reader to find the email address. On the Kindle homescreen, tap the three-dot button in the upper right corner (which is the library). Then, select “Settings” and then “Your Account.” At the bottom, you’ll notice an email address that ends in @kindle.com (via Amazon).
This email is also available in the Kindle app for Android and iOS devices. Go to More > Settings in the app to find the Send-to-Kindle email address.
Simply send a blank email to this address, attach the document you want to send to your Kindle as an attachment, and it will appear in your library the next time it connects to the internet.
Please keep in mind that if you have multiple Kindle devices, or multiple Android or iOS devices with the Kindle app installed, the email IDs will be different. Documents must be sent to these email addresses separately in order to reach the appropriate Kindle.
This method, in addition to PDF, supports a variety of file formats (as per Amazon). These are some examples:
Microsoft Word (.DOC, .DOCX)
HTML (.HTML, .HTM)
RTF (.RTF)
Text (.TXT)
JPEG (.JPEG, .JPG)
GIF (.GIF)
PNG (.PNG)
BMP (.BMP)
PDF (.PDF)
EPUB (.EPUB)
It should be noted that native EPUB support was only recently added and may not work as well as other file formats. This may necessitate special consideration because, in contrast to other file formats, an EPUB is more dynamic and holds more data, particularly when it comes to how the ebook appears — including information about animations and graphics within the ebook.
Other methods for transferring PDFs and other documents to Amazon Kindle

Although Amazon recommends sending documents to Kindle devices via email, some antiquated methods still work. You can use dedicated Send-to-Kindle tools to transfer files directly from a Windows PC or Mac to the Kindle. To send files through these apps, you must first sign in to your Amazon account.
After signing in, simply drag files onto the app’s area or use the browsing method to select files. You can choose whether the file is transferred in its original format or converted to Amazon’s AZW format for the Kindle in the app’s settings. Be aware that the latter modifies the page’s default orientation and optimizes the document based on your Kindle’s settings. If you want to keep the original configurations of the document file, leave the option unchecked.
How to open web pages on Amazon Kindle

While the Amazon Kindle is excellent for reading static pages from an ebook, web browsing isn’t the first thing that comes to mind when considering one. That doesn’t mean you can’t use your Kindle to access the internet.
If you have a Kindle, you are aware that it allows you to search any highlighted text on Wikipedia as well as a dictionary from within the reader interface. This can be expanded to allow the e-reader to view entire web pages. Because it connects to the internet, a Kindle includes a web browser that can be accessed as easily as a book.
To access the web browser, tap the three-dot button in the upper right corner of your Kindle homepage, followed by “Web Browser.” This will launch a basic web browser, which can be useful for researching something from the ebook or document you’re reading.
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The browser may not support modern dynamic web elements and may load websites in the same way that mobile devices did in the 2G internet era. However, it can be a useful supplement when you are in the middle of a book and want to avoid switching between devices.