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PDFs

MultiTaction Canvus shows PDF documents on the canvas. You can page through them, draw on them and email them with your ink included.

Add a PDF

Drag a PDF file onto the canvas from your desktop, from the Files item in the finger menu, or from a USB drive in the main menu. Canvus renders the pages in the background and adds them to the document as they are ready.

Page through a PDF

  • Use the previous page and next page buttons, or the page slider, in the PDF's title bar.
  • Or pin the PDF and swipe through the pages. While the PDF is unpinned, a drag moves the whole PDF instead. See Pinning content.

Draw on a PDF

Tap the pen button in the PDF's sidebar and draw. See Pens and ink. Ink stays on the PDF when you export, import or upgrade the canvas.

You can also place notes on a PDF. From Canvus 26.06, the eraser removes ink from those notes too.

Email a PDF

Tap more in the sidebar, then the email button. If the PDF has ink on it, Canvus sends a copy of the PDF with the ink drawn in. Otherwise it sends the original file. Email is on by default; an administrator can set up the mail server or turn email off. See Email settings.

Page sharpness

Canvus turns each PDF page into an image before it shows it. The image fits within a square of raster-resolution pixels on each side, keeping the page proportions. The default is 2048, so an A4 page in portrait becomes an image about 2048 px tall.

[pdf]
; Size in pixels of the square that each rendered PDF page fits inside.
; Higher values give sharper pages when zoomed in, and use more memory
; and disk cache.
; DEFAULT: 2048
; raster-resolution=2048

You can also change it on the settings page. The new value applies to PDFs that load after the change.

When a PDF is resized, for example by a REST API call or by another site, Canvus lays out the pages again at the new size.