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What we're building

Product updates, engineering notes, and ideas from the team.

An e-reader with three highlighted lines, flowing out to three destination cards.
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kindlehighlights

Get your highlights out of your Kindle

Your Kindle has been keeping a plain text file of every highlight you have ever made. Where it lives, how to read it, what quietly corrupts it, and how to turn it into notes you will actually reread.

5 min read
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A page of prose with three words marked, becoming three rows in a file called vocab.db.
kindlevocabulary

The Kindle Vocabulary Builder, and the file behind it

Every word you look up on a Kindle is written to a small database on the device. Where that file is, what it holds, why the list quietly stops growing, and how to get it out before it does.

7 min read
A dense fixed page on the left flowing into an e-reader showing the same text at a readable size.
kindlepdf

How to send a PDF to your Kindle

A PDF is a page, and a Kindle is not a page. The one word that makes Amazon reflow it, the size ceilings nobody mentions, why some PDFs come back unreadable, and when to leave a PDF alone.

6 min read
Three inbound routes converging on an e-reader that shows a page of plain text.
kindlereading

How to get anything onto your Kindle

The three routes onto a Kindle, the failures nobody warns you about, and how to make a wall of text read like a book once it lands.

4 min read