Limits

WhatLimit
Sync vaults per account5
Notes per sync vault10,000, including Trash
Storage per sync vault500 MB
Upload per note when syncing800 KB (800,000 bytes)
Note text500,000 bytes (UTF-8, so non-English text and emoji use more than one per character)
Note title200 characters
Folder name100 characters
Notes in the Windows app10,000, including Trash; saving more fails
ImportFiles over 500 KB are skipped; ZIP files up to 300 MB; up to 10,000 notes in the notebook, including Trash
Search resultsThe first 20 matches
Vault password12 to 1024 characters
Account password12 to 128 characters

Known gaps

Is Kithnote free?

Yes. The browser app, the Windows beta and encrypted sync are free, with no paid tier. Sync has the limits above while Kithnote is in beta, and features and limits can change. See the beta terms.

Can I add images or attach files?

Not yet. There's no way to insert images, and ![alt](url) appears as a link. Import skips images and other files, and sync doesn't carry attachments.

Can I empty Trash or delete a note for good?

No. Notes in Trash stay there until you restore them, including the copy in your sync vault. The only way to remove a note from the cloud is to delete the vault. Trash is also left out of Export notebook and counts toward the 10,000-note sync limit.

Why did my links break after I renamed a note?

Links use the note's title and aren't updated when you rename. Edit the [[links]], or rename the note back. Unmatched links appear in the graph as Not written yet.

Can I nest folders?

No. Folders are a single flat list. Imported nested folders become one folder with a name such as Projects/Alpha.

What can search do?

It finds notes containing the exact words you type, in the title or text, and shows the first 20. There are no search operators.

Which diagrams, maths and syntax work?

Diagrams must be Mermaid, written as a mermaid code block in Write mode. Maths, ==highlights== and ![[embeds]] aren't supported. Code blocks aren't colour-highlighted.

Is there a Mac, Linux, iPhone or Android app?

There's no Mac, Linux, iPhone or Android app yet. The browser app at kithnote.app/notes works in modern browsers on those systems, and the Windows x64 beta is the only installed app.

Troubleshooting

My notes disappeared in the browser

Browser notes live in that browser's site storage. Clearing site data for kithnote.app, or using a different browser, profile or private window, shows a different (or empty) notebook. If you had sync set up, connect again with your connection kit. Otherwise import a Markdown export.

It says my notebook is already open in another tab

Only one tab can hold the notebook at a time. Close the other tab and try again.

I forgot my vault password

It can't be reset or recovered, by you or by us. If you synced before, a saved connection kit or another unlocked device may still have your notes. See Security and privacy.

Sync says Sync needs attention

Hover over the button to read the message. Check you're online and that the connection kit is the current one. If you used Revoke old connection kits, devices need the new kit. Revoking doesn't change the encryption key (see Sync). See Sync.

I got a conflict copy

You edited a note on two devices before they synced. Both versions were kept, and the copy is called "(conflict copy)". Combine them by hand and move the extra one to Trash.

I can't delete my account

Delete all your cloud vaults first, type DELETE, and sign in again if your session is more than ten minutes old. See Your account.

Windows warns about an unknown publisher

That's expected while publisher signing is pending. See Windows app.

I need other help

© 2026 Euphoric Software