In 2023 SuttaCentral.net started offering a variety of formats of their translations for download as well as print on demand. To get these translations, please visit the Digha Nikaya Editions page on their website. For now they do not offer Pali-English as ebooks, so please make use of the editions below.
Pali & English
This edition was created from the March 2023 edition of the website.
This edition was created from the 13 November 2019 edition of the website.
Kindle & Epub
Editable .doc file
TXT
If you are going to use the ebook edition for a daily sutta reading practice, you may want to use a checklist to keep track and have a physical reminder of what you have read. You can download checklists here.
And of course you can read it on-line at SuttaCentral.net.