Kindle highlights die in the same folder, every time. You highlight 40 passages in a book, finish it, feel smart for a week, and never look at any of them again.
The highlighting itself is fine. Kindle has had this part nailed for over a decade. The thing nobody builds for you is the loop where the highlight comes back around six months later and reminds you why you cared.
I have shipped thousands of highlights into that black hole. Twice.
Highlighting on the device is the easy part
A long press on a Kindle, a drag to the end of the passage, done. The device writes the highlight in three places at once: a plain text file on the device itself, your Amazon cloud notebook at read.amazon.com/notebook, and Goodreads if you connected the accounts. None of that is hard.
What kills the workflow is everything after the highlight. The notebook viewer is per-book, so a passage about attention you remember from one of three different books means scrolling through three different books to find it. Some publishers cap how much you can copy out in a session. Popular highlights from other readers underline themselves on top of yours by default, which makes a re-read of your own selections weirdly noisy.
Treat the device as the capture step and stop expecting it to be a re-reading tool. It is not built for that. Almost nothing on Amazon's side is.
Get the highlights off Amazon, once
The first move is a one-time job. Get every highlight you have ever made off Amazon and into a place you control, then keep it in sync from there.
Two things are worth knowing before you do it. The plain text file at documents/My Clippings.txt only contains highlights from books you read on a physical Kindle, not the iOS or Android apps. And the cloud copy at read.amazon.com/notebook covers everything but is treated as one book at a time by the official viewer.
Where Kindle highlights live and how to get them out covers the practical export options in full, including the free bookmarklet path and the SaaS sync option. Pick one and run it once.
Tag by topic
The biggest mistake I made early on was filing every highlight under the book it came from. Eight months later that is the worst possible index. You do not want to remember the passage by which Cal Newport book it lived in. You want to remember it by what it was about.
A small set of durable topics works better. Eight, maybe ten. Use the things you actually think about. Skip the aspirational categories.
- attention
- writing
- decisions
- parenting
- habits
- health
- money
- friction
That is roughly the list I run. Yours will be different. The constraint is the whole point. The moment you have forty tags, the index is useless.
Each highlight gets one tag. Two if it really belongs in two places. Never three. The index of your tags becomes the entry point you skim from. The book list stops mattering.
This is the same shape as the digital commonplace book idea, applied to one source. A Kindle highlight is just a passage. The methodology is identical to anything else worth re-reading.
Build a re-reading habit you will actually do
Capture is half. The other half is resurfacing, where the highlight comes back to you on its own. If it does not come back, you might as well have not saved it.
Two ways to do the resurfacing part. One leans on a tool that is genuinely good at it. The other is low-tech and free.
Readwise daily review, if highlights are how your brain works
Readwise's daily review emails you a small batch of older highlights every morning, ordered by spaced repetition. It works. It is the single best implementation of the loop I have used, and there is no point pretending otherwise. The price is Lite at $5.59 a month or Full at $9.99 a month when billed annually, with a 30-day free trial.
If your reading is overwhelmingly Kindle, and you are happy with a daily ritual that lives inside one app, Readwise is the right tool. It will surface a passage you forgot you saved on a Tuesday three years from now, which is the actual outcome you want.
Readwise wants to be the place your highlights live. Pull every passage into it and the daily review is great. Try to mix it with bookmarks, articles, and X saves and the picture gets more complicated.
A weekly skim in any tool that holds your highlights
The low-tech path is a recurring calendar block, fifteen minutes, once a week. Open whatever holds your highlights, scroll through the last seven days of additions, then pick one tag and reread every passage under it.
That is it. No spaced repetition, no daily email. The frequency does the work.
A monthly version where you pick one tag and reread the whole thing in one sitting works too. So does a daily random pull where you open the file and read whatever shows up first. Any of these beats the alternative, which is nothing.
I ran a weekly skim for two years before I tried Readwise and the gap is smaller than you would think. The hard part is showing up. The tool is downstream of that.
Where Notion, Obsidian, Readwise, and Keep actually fit
Four common places people put Kindle highlights, each sharper at a different thing.
Readwise. Built for this. Daily review is the headline feature, the Kindle sync is automatic once you connect Amazon, and the export to Obsidian or Notion is clean if you decide to leave later. If your highlights are mostly Kindle and you want the daily review without building anything, start here.
Obsidian. The most powerful organizationally. Backlinks and a graph view turn a pile of highlights into something you can navigate by idea. The current Obsidian Kindle plugin is still actively maintained and pulls highlights in from Amazon for you. The cost is a real learning curve and vault discipline. Without structure, an Obsidian vault sprawls.
Keep. Imports My Clippings.txt directly at the import page, parses every highlight into one item per book with timestamps and source preserved, and stores everything as plain markdown. No daily review queue. What earns it the slot here is what sits next to those imports. Kindle highlights live in the same library as articles you saved with the extension, X bookmarks, RSS posts, and YouTube transcripts. One library, one search, one MCP server any LLM can query across. "Find every passage I have saved about attention, from books or articles" is a real prompt with a real answer. The Kindle import guide has the steps. If your reading is just Kindle, Readwise is the tighter fit. If Kindle is one of four or five places you save things from, Keep is the better home.
Notion. A solid place to keep highlights once they are out of Amazon. The various Notion reading-list templates people share will get you a structured database with properties and views. The daily review part is on you, and capture is slower than every other option above. If you already live in Notion, the friction is lower than starting somewhere new.
Pick one. Stop researching. The tool you actually open in six months beats the perfect tool you abandon in three.
A workflow you can actually run on Sunday morning
Get your highlights off Amazon once. Tag lightly. Set a recurring fifteen minutes on Sunday morning to look at them.
That is the whole workflow. Everything else, including which tool you store them in, is detail.
Keep stores Kindle highlights in the same place as everything else worth re-reading, in plain markdown, with no daily review queue but a real one-library answer for anyone whose reading is more than just books. Import your My Clippings.txt file and they land in the rest of your library within a few seconds.