If you’ve ever typed a search word into OneNote, you’ll know the feeling. Every relevant note appears, no matter which notebook it was buried in. That’s why so many people ask how to search across notebooks in OneNote in the first place.
Being able to search across notebooks in OneNote is, for me, the single biggest reason OneNote earns its keep. It means I can throw a thought, a client detail, or a half-formed idea into a page without worrying I’ll never see it again.
Why does OneNote’s search actually matter?
People ask “why bother with OneNote?” more than almost anything else. My answer is always the same: search. It’s quick, it’s efficient, and it means that wherever you’ve filed something, you’ve got an excellent chance of finding it again.
That’s not nothing. The fear of “losing things in the system”, is a reason we avoid digital note-taking. OneNote flips that fear on its head.
Web vs desktop: they don’t search the same way
Here’s the bit that catches people out. In OneNote on the web, you can only search the notebook you currently have open, because each notebook opens in its own browser tab.
On the web, search defaults to the current section (covering every page inside it), and you can narrow that down to just the page you’re on. That’s as far as it goes — there’s no way to search a whole notebook, let alone all your notebooks, without switching to the desktop app.
The desktop app is different. Open search and there’s the default – search every notebook that’s connected, all at once. You can select the range that the search uses. From the default (all notebooks) to a single notebook; a section or a page.
That’s a useful difference if you’re the kind of person (like me) who has separate notebooks for different areas of life or business.
How do I search across notebooks in OneNote desktop?
Click the search icon in the top right — the search box opens with all notebooks already selected, so you don’t need to touch anything else. If you want to narrow things down, use the dropdown arrow next to the search box to switch to a single notebook, a section, or a page.
Leave the standard “all notebooks” and OneNote will search everything that’s connected, grouping results by title matches and body-text matches.
One nice touch: recent searches show up the moment you click into the search box, so if you keep returning to the same note, you don’t have to retype your search every time.
A quick tip that’ll save you a click
If a search result takes you to the right page, click on it (rather than just closing the search box). That way, when the search panel closes, you’re left sitting on that page. If you close the search without clicking through, OneNote tends to dump you back on whatever page you were on before you started searching.
Searching in OneNote on the web
Here’s how it works if you’re using OneNote in a browser. Look to the left, underneath the notebook icon, and you’ll find a magnifying glass — that’s search. Click it, and a search box appears in the column to the right, with a scope dropdown sitting just underneath it.
That dropdown is where you choose what you’re searching. You’ve only got two options here: section or page. By default, it’s set to section, meaning it searches every page inside your current section. So if you’re on a “Clients” section with ten pages, typing a search term checks all ten. Switch it to page, and it narrows right down to just the one page you’ve currently got open.
Type your search text into the box, and results appear instantly with your search term highlighted. Click a result and you’ll be taken straight to that page, with the matching text picked out for you.
So is OneNote’s search actually worth relying on?
Yes — and that’s really the whole point of this post. Once you trust that you can search across notebooks in OneNote and actually find what you’re after, the app stops feeling like a filing risk and starts feeling like a safety net. You don’t need a perfect system. You just need to know the search bar has your back.
Written with the help of Claude AI, from an original transcript
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