SnapMark is a Supernote plugin that turns what's on your screen into a note you can write on. That can be a page of a PDF or EPUB, a screenshot, or anything in any app.
- What you need
- Install
- First run
- Snap a document page
- Snap part of a page
- Paste into the note you're working in
- The floating capture button
- Choosing a region
- Annotate a screenshot
- Insert a screenshot into a note
- Export a note page as PNG
- Settings
- Where your snaps are saved
- Update
- Uninstall
- Privacy and permissions
- Troubleshooting
- Known limitations
- Report a problem
- A Supernote with plugin support. The firmware must have the plugin system: Chauvet 3.29.43 or later on Manta and Nomad, or 2.26.40 or later on A5 X and A6 X. You can check your version in the device's Settings. Since 0.13.0 SnapMark is built with Supernote's plugin library 0.1.65, which every such firmware accepts (0.12.0 used the newer 0.2.3, which some firmware refused).
- Tested devices: Manta and Nomad. Every release is tested on a Manta, and a Nomad owner has confirmed it there, upright and turned sideways. It's written to work on the A5 X and A6 X too, but they are untested. Reports are welcome.
- Download
SnapMark-v<version>.snplgfrom the latest release. - Copy it into the
MyStylefolder on your Supernote, using a USB cable or the Supernote Partner app.- On a Mac, a USB copy needs an MTP app such as OpenMTP.
- On the Supernote, go to Settings → Apps → Plugins → Choose Installation Package and pick the file.
- On some firmware this is called Add Plugin.
Right after you install SnapMark, a Welcome screen offers to turn on the floating capture button and to open Welcome to SnapMark, a four-page guide in Notes with a page to try it on. The guide is saved in your Snaps folder; open it again any time from SnapMark's settings, Getting started → Open the welcome note (it's made again if you deleted it).
The first time you use a SnapMark button, it shows "SnapMark needs file access". Tap Continue, then Always allow in the system dialog. SnapMark needs file access to save your snaps as notes.
SnapMark's buttons are in the plugin menu of the side toolbar:
| In a document (PDF, EPUB) | In a note |
|---|---|
| Snap page, Snap region, Notes for this page | Paste queued snaps, Undo last snap, Annotate screenshot, Insert screenshot, Export page as PNG |
The floating capture button is separate and off by default; see below.
In a PDF or EPUB, tap Snap page. In about 3–4 seconds a new note opens with:
- the page as its background, ready to write on;
- your handwriting from the document page, copied as real ink you can erase and move;
- text-selection highlights you made in the book (setting: keep or leave out);
- marker highlights turned into thin underlines just under the highlighted line (the Notes app would draw a marker solid over the text);
- a link,
↩ <Book>, p. N, that opens the book on that page again. It goes at the bottom left; if text is there, at the top right; if both have text, the page is drawn slightly smaller so the link gets a free strip at the bottom.
With After a snap → Stay here, the note is saved and you stay on the page. With Margin mode, the page is shrunk to 80/75/66% at the top-left, starting after the Notes toolbar (set Notes toolbar to the side yours is on; with Full size it starts in the corner), leaving room to write on the right and below.
A PDF page with no room for your thoughts? Tap Notes for this page (PDF or EPUB toolbar → plugins). The first time, SnapMark makes a note for that page, <Book> - p<N> notes, in the book's snaps folder: the page shrunk at the top left (66%, or your margin-mode size) with your handwriting, the ↩ link back and the searchable keyword, and room to write beside and below. Add pages in Notes as you need them.
Next time, the same button on that page opens those notes again, on their last page. They're found by their name, so if you rename or move the note, a new one is made. In an EPUB, pages move when you change the text size, so the notes follow the page number, not the text.
In a PDF or EPUB, tap Snap region and drag a box over the paragraph, verse or chart you want. The new note gets:
- that part of the page at the top, enlarged up to 2× if it's small, with the rest of the page free to write on;
- your handwriting inside the box, still real ink you can erase and move;
- the
↩ <Book>, p. Nlink back to the page.
Whole page on the same screen does a normal Snap page.
Supernote turned sideways? Snap page and Snap region work in landscape orientation too, whether the document app shows the page at its normal size or zoomed to the width (after you turn a page). Draw the box on what you see; the note comes out upright, with your handwriting and underlines where they belong.
Reading a PDF alongside a note of your own? Set Where snaps go → Into the note I'm working in. Then after Snap region (or a tap on the floating button):
- Notes comes back with the note it last had open, on the page you were on;
- the cut-out is placed on that page as a picture, at the size you saw it, below what's already on the page. If there's no room, it goes on a new page right after. Lasso it to move or resize it;
- from a PDF or EPUB, a
↩ <Book>, p. Nlink goes just under it. From another app, a small caption says where and when it came from, for exampleKindle · 16 Oct 2026, 15:07.
Things to know:
- Open your note in Notes first. If Notes has no note open, SnapMark asks you to open one rather than guessing.
- From a PDF or EPUB, your handwriting inside the box comes along as real ink on the picture (erase or move it), and marker highlights become underlines under their line. From other apps, it's part of the picture.
- Whole screen from the floating button pastes the whole screen. In a PDF or EPUB, Whole page and Snap page still make a note of their own, as do the screenshot buttons.
- After a snap → Stay here pastes and brings you back to the app or document you were in.
Reading and finding several passages you want? Don't stop for each one:
- Box a part as usual (Snap region, or the floating button in any app) and tap Queue instead of Snap region. You stay where you were; a short message says how many are waiting.
- When you're done, open your note in Notes and tap Paste queued snaps (toolbar → plugins).
Everything queued goes onto the page you're on, oldest first, each below the last (on new pages when the page is full), the way a single paste does: the picture, your handwriting from the document as real ink (read at that moment, so ink you added after queuing comes too), the ↩ Book, p. N link (or a caption naming the app) and the keyword. Undo last snap takes the whole batch back.
The queue is kept in SnapMark's own folder, so it survives a restart or an update. SnapMark's settings show how many snaps are waiting, with Clear the queue to throw them away.
With Searchable snaps on (the default), a snap from a PDF or EPUB carries what it shows, so Supernote's own Search finds it later:
- a keyword with the book and page, like
Walden p. 2: Search → Keyword, or the note's keyword list; - the text of what you snapped, on a hidden layer of the snap's page (the page looks the same): Search → Text finds the snap by any word in it. For a region, SnapMark keeps the lines inside your box; when it can't tell exactly which lines those are (two columns, a framed quote), it keeps the whole page's text, so the snap is still found by the words of its page.
- A paste into the note you're working in gets the keyword only: SnapMark doesn't add layers to your own pages.
Scanned PDFs have no text, so their snaps get the keyword alone, as do margin-mode snaps with After a snap → Stay here (the hidden text needs Notes to have the note open). Turn it off in SnapMark's settings under Searchable snaps.
Pasted the wrong part, or into the wrong note? In Notes, open the toolbar's plugins menu and tap Undo last snap. It takes back the last snap that went into a notebook you already had (a Paste queued snaps counts as one, all of it):
- a paste into the note you're working in: the picture, its ink, its link or caption and its keyword are removed (and the page, if the paste had made one);
- a Snaps inbox page: the page is removed.
It only removes what SnapMark added, and only while that's still as the snap left it. If you've written on that page or added pages since, it leaves everything as it is and says so. A snap that made a note of its own isn't deleted (SnapMark never deletes your files): Undo tells you which note it was, and you can delete it in Files. Undo remembers only the last snap, and forgets it when the plugin restarts.
Turn it on in SnapMark's settings (Floating capture button → On). A small button with a viewfinder icon then floats over everything: notes, documents, Kindle, the browser, Settings.
- Tap it (finger or pen) to capture the screen. By default you then drag a box over the part you want; Whole screen keeps all of it. About a second later Notes opens a new note with it, ready to write on. The button itself is never in the capture.
- In a PDF or EPUB it works like Snap region: the cut comes from the page itself and your handwriting stays editable.
- Drag it to move it. It stays where you leave it, also after a restart.
- Where to keep it: by default it sits on the file name at the bottom right of a note.
- Supernote's pen writes on the page underneath any button, so a pen tap on the button over a page also leaves a dot of ink.
- On the file name (or on the toolbar), the pen doesn't write, so keep it there.
- A finger tap never writes.
- Skip the selection screen: in the settings, set When I tap the floating button → Whole screen right away.
- Notes toolbar: the capture is shrunk slightly so the toolbar and the page bar don't cover it. Set Notes toolbar to the side your toolbar is on, or to Full size.
- The note is named after where you were:
<app name> - <time>from any app, for exampleeBiblia - 2026-10-15 1231;<Book> - p<N> - <time>from a PDF or EPUB. These also get the↩ <Book>, p. Nlink back to the page;<note title> - <time>from a note.
- After a snap applies here too: Open the snap opens the new note; Stay here saves it and brings you back to the app you were in.
- Where snaps go → One "Snaps inbox" turns each capture into the next page of your inbox notebook instead of a new note. Into the note I'm working in pastes it into your open note.
After Snap region or a tap on the floating button, you see the page or screen as it was:
- Queue keeps the box for later and takes you back: see Capture queue.
- Drag with your finger or the pen to draw a box, or tap two corners: tap one corner (a small square marks it), then the opposite one. Taps are quicker on e-ink, where a drag lags behind.
- To adjust the box, drag a corner, or tap a corner and then tap where it should go. Drag or tap elsewhere to start over.
- Snap region keeps that part.
- Whole screen (or Whole page in a document) keeps everything.
- Cancel goes back to where you were.
While this screen is up, the pen draws boxes, not ink. On e-ink a dragged box follows your finger with a little delay; that's the display's refresh speed.
Prefer Supernote's own screenshot? Take one as usual, anywhere. Then open any note and tap Annotate screenshot:
- If the newest screenshot is recent (10 minutes by default, adjustable), it becomes a new note right away.
- Otherwise a picker shows your latest 12 screenshots; tap one.
In a note, tap Insert screenshot. The newest (or picked) screenshot is placed on the current page as a picture, at about 70% of the page and centered. Lasso it to move or resize it, and write around or over it.
In any note, tap Export page as PNG. The current page, with all your writing, is saved as EXPORT/<note title> - p<N>.png at full resolution. It's ready to send to a computer or share.
Open them from Settings → Apps → Plugins → SnapMark, then SnapMark's settings button. Every change is saved immediately.
| Setting | What it does |
|---|---|
| Save snaps in | The folder under Note/ (default Snaps) |
| Where snaps go | A new note each; One "Snaps inbox": every snap becomes the next page of one notebook; or Into the note I'm working in: region snaps are pasted onto the open note's page |
| Margin mode | Page snaps shrunk to 80/75/66% with room to write (own-note snaps only) |
| After a snap | Open the snap, or Stay here (save and keep reading) |
| Text-selection highlights | Keep them in the page image, or leave them out |
| My handwriting on the page | Copy it as ink, or leave it out |
| Marker highlights | Turn them into underlines, or leave them out |
| Annotate screenshot | How recent a screenshot must be to use it without the picker |
| Floating capture button | On / Off |
| When I tap the floating button | Choose a region (default) or Whole screen right away |
| Notes toolbar | Which side your Notes toolbar is on, so captures aren't covered and margin-mode pages start after it, or Full size |
| What | Where |
|---|---|
| Page snaps | Note/Snaps/<Book title>/<Book> - p<N> - <time>.note |
| Screenshots and floating-button captures | Note/Snaps/Screenshots/ |
| The inbox (collect mode) | Note/Snaps/Snaps inbox.note |
| PNG exports | EXPORT/ |
Snaps is the default folder; you can change it in the settings. Two snaps in the same minute get (2), (3)…
- Install the new
.snplgover the old one, the same way you installed it. - Restart your Supernote afterwards. The floating button runs native code, and the old version keeps running until the plugin system restarts.
Your settings are kept.
- Turn the Floating capture button off first.
- Remove SnapMark in Settings → Apps → Plugins.
If the button is still on screen after uninstalling, tap it once or restart the device and it goes away. Your snaps are normal notes and stay where they are.
- Access: SnapMark asks only for file access (read and write). It has no internet access; nothing leaves your device.
- Why it can capture the screen: the floating button is native code. It runs inside Supernote's plugin system, and that system already has the rights to draw over other apps and to read the screen. So capturing needs no extra permission prompt.
- What the native code does:
- shows the button;
- captures the screen only when you tap it;
- checks which app is in front;
- brings Notes, or the app you came from, back to the front;
- opens a note;
- crops and measures page images (to place the cut-out, the underlines and the link) and writes the log file you ask for.
- Open source: you can check all of this in the source.
| You see | What to do |
|---|---|
| "This plugin is not compatible with the current system version. Please update the system." and no SnapMark settings | Your firmware's plugin system rejects the plugin library version SnapMark was built with. Update to SnapMark 0.13.0 or later, which is built with library 0.1.65. If it still happens, please open an issue with your model, firmware version and the exact message. |
| You need to report a problem but have no computer | SnapMark settings → Problem report → Save a log file. It saves a text file in EXPORT/; attach it to your report. It may contain note and document names, so check it first. |
| The snap opens as two pages, one of them blank | Notes showed a half-way state; the note itself is complete. Reopen it from its folder. Fixed in 0.13.0. |
| "Open the note to paste into, then snap again." | With Into the note I'm working in, open the note in Notes first, then snap. |
| The floating button doesn't appear after turning it on | Open any note once. If it's still missing, restart the device. |
| "Still working on the last snap…" | A snap is in progress; wait a moment. It resets on its own after a minute if something got stuck. |
| "Close the plugin screen first" | You tapped the floating button while a plugin's own screen was open. Close it and tap again. |
| "Could not bring up the Notes app" | Open any note once, then tap the button again. |
| The capture is partly under the toolbar | Set Notes toolbar to the side your toolbar is on. |
| A pen tap on the floating button left a dot of ink | Drag the button onto the file name at the bottom right of the note; the pen doesn't write there. |
| A whole-page snap comes out smaller, at the top-left | Margin mode is on in the settings; set it to Off for full-size pages. |
| "SnapMark has no file access" | Allow it in Settings → Apps → Plugins → SnapMark → Permissions. |
| "… is encrypted and locked" | Your snaps folder is in a locked folder. Unlock it in Files, or choose another folder. |
| After an update, the floating button acts like the old version | Restart the device (see Update). |
- Devices: tested on a Manta and confirmed on a Nomad; the A5 X and A6 X are untested.
- Not yet tested on the device:
- landscape captures;
- "Stay here" and the inbox with the floating button.
- Speed: a page snap takes 3–4 s. An inbox snap takes 5–6 s, because the Notes app has to reload the open notebook.
- Drawing the box on e-ink lags slightly behind your finger.
- Pen taps on the floating button over a page also write a dot there (see where to keep it). In a PDF the safe spots aren't known yet.
- Margin mode copies your strokes but not shapes from the page.
- Last page of a document: the document app refuses that page to plugins, so SnapMark reads its handwriting through Notes. A region snap from it takes a few seconds longer, and with Stay here Notes opens briefly before you're taken back.
- Sideways, zoomed to the width: the document app itself draws your highlights a line or two off the text in that view. Your snaps aren't affected: SnapMark places them from the page.
- Annotate screenshot can't tell where a native screenshot came from, so those notes are named
Screenshot - <time>.
Open an issue on GitHub. Please include:
- your device and firmware version;
- the SnapMark version (Settings → Apps → Plugins);
- what you tapped;
- what happened.
No computer? SnapMark settings → Problem report → Save a log file puts a log in EXPORT/ to attach. If you're comfortable with adb, a live log helps too:
adb logcat -v time | grep -E 'SnapMark|AndroidRuntime'SnapMark is free. If it saves you time, you can buy me a coffee on Ko-fi.