INKHOLD

Your Supernote, synced to a computer you own.

Inkhold takes the place of Supernote's Private Cloud. Point your tablet at it and it syncs as it always has, but your notes stay in your home, and everyone in the house can read, search and recover them from a browser.

Get Inkhold Read the user manual

Free and open source (GPLv3). In beta, tested end to end on a Supernote Nomad. Unofficial: not made by Ratta.

The Inkhold web app showing a handwritten notebook page: “Hey there! Welcome to Inkhold. I hope it keeps your notes safe and always at hand :)”, with the notebook's pages listed beside it. The Inkhold web app showing a handwritten notebook page: “Hey there! Welcome to Inkhold. I hope it keeps your notes safe and always at hand :)”, with the notebook's pages listed beside it.
The library on a phone, the welcome notebook among the others. The library on a phone, the welcome notebook among the others.

Nothing you delete is gone at once

Delete a notebook on the tablet and it waits in Inkhold's recycle bin for 30 days, a window the admin can change. Restore it and it is back on the tablet at the next sync.

Every saved version of a notebook is kept as well: open how a page looked last week, and bring that version back if you need it, the handwriting on an annotated PDF included.

Get back a deleted file · Go back to an earlier version

The recycle bin: deleted notebooks grouped by day, each with the days left before it is removed for good. The recycle bin: deleted notebooks grouped by day, each with the days left before it is removed for good.
A notebook's version history: three saved versions with their dates and how many pages changed. A notebook's version history: three saved versions with their dates and how many pages changed.

Backups that run themselves

Inkhold backs itself up into a folder of plain files: a NAS share, a USB disk, your Dropbox. Each night adds only what changed, every snapshot is complete on its own, and a backup can be checked without restoring it.

In Docker, mount a folder at /backup and that is all. If backups stop, admins see it in the library and in the admin console.

inkhold backup create /mnt/nas/inkhold --keep=7
inkhold backup verify /mnt/nas/inkhold
inkhold restore /mnt/nas/inkhold

Back up automatically · How backups work

The admin console's server panel: memory, disk used, the recycle bin's 30 days, and the last backup an hour ago, with the backup folder /mnt/nas/inkhold listed below. The admin console's server panel: memory, disk used, the recycle bin's 30 days, and the last backup an hour ago, with the backup folder /mnt/nas/inkhold listed below.

Every page, in any browser

Open a notebook and read it page by page; open a sketch and see each of its layers on its own. PDFs come with their contents and text you can select and copy, and text files open too.

Your browser draws the pages, not the server, so a small computer is enough to serve a whole household. Export any notebook as a PDF with searchable text, a PNG, or a layered image.

Read a note · Export a note

A sketch of an ink drop falling into a pool, drawn on three layers, with the layers panel listing Layer 3, Layer 2, Layer 1 and the reference layer, each with its preview, a button to hide it and its opacity. A sketch of an ink drop falling into a pool, drawn on three layers, with the layers panel listing Layer 3, Layer 2, Layer 1 and the reference layer, each with its preview, a button to hide it and its opacity.

Your Supernote already recognises your handwriting. Inkhold makes that text searchable across every notebook, with PDFs and text files alongside, and finds the word you meant even with a typo.

The search runs in your browser, and it tells you which notebooks it can't search yet, rather than letting a missing result look like an answer.

Find a note

Searching for “desert” finds the handwritten poem Ozymandias, with the matching line quoted under it. Searching for “desert” finds the handwritten poem Ozymandias, with the matching line quoted under it.

Your to-dos, on both sides

The lists and tasks of the tablet's To-Do app appear in the browser, where you can add, tick off, date and move them. The tablet picks the changes up at its next sync, and a task written from a note links back to its page.

To-Do sync is new: it is off until you turn it on.

Use To-Do in the browser · Turn on To-Do sync

The To-Do page: tasks grouped by list, with due dates, one overdue, and one task showing the handwriting it was written in. The To-Do page: tasks grouped by list, with due dates, one overdue, and one task showing the handwriting it was written in.

On your phone, too

On a phone, Inkhold is laid out for one hand: the library in two columns, the reader's controls at the bottom, a swipe to turn the page. Add it to your home screen and it opens like an app.

Install Inkhold on your phone

The library on a phone: notebooks in two columns, with the tab bar at the bottom. The library on a phone: notebooks in two columns, with the tab bar at the bottom.
A notebook open on a phone, its page controls at the bottom. A notebook open on a phone, its page controls at the bottom.

Small enough for a Raspberry Pi from 2014

One program
One file to run, one port, no database server and no extra services.
The browser does the work
Drawing pages, searching and exporting all happen on your device.
Measured on a Pi 1
About 15% of its single core through a busy household evening: four people and two tablets.
No lock-in
Your notebooks are kept exactly as the tablet wrote them, and back up to a folder of ordinary files. No subscription, no account you don't control.

It's a beta

Inkhold syncs your real notebooks, so it is tested against a real tablet: the Nomad, end to end. Other Supernote models very likely work the same way, but nobody has confirmed it yet; if you have one, trying it and reporting back helps the most.

Before you start, back up your tablet. And read what doesn't work yet: Digest sync, the Supernote phone app, viewers for EPUB and Office files, and searching handwriting inside PDFs and .mark files.