OPENNOTES

The annotated paper archive

Open a PDF. Leave a trace.

Read with the page in front. Write with the tools you already understand. Keep every mark with the document.

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  1. 01OPEN / FIND / RETURN
  2. 02PEN / HIGHLIGHT / SHAPE
  3. 03PDF / LOCAL / YOURS

Windows 10 1809+ · .NET 8 · Open sourceBuilt for the page

OpenNotes/FIELD NOTES
PAGE 07
A good page gives the idea somewhere to land.
Pen ready — draw anywhere on the page Pointer input stays in your browser

LIVE SURFACE / 01The page is the product.

The OpenNotes rhythm

Read, mark, return.

Three small promises for a long document.

01 / INK

Ink that gets out of the way

Windows Ink support, a direct pen surface, and the tools you need to underline the thought before it disappears.

02 / PAGE

The whole PDF, in view

Tabs, recent files, thumbnails, bookmarks, and search keep the document’s shape in your head while you work.

03 / FILE

A file you can take with you

Annotate the PDF you already have, save it atomically, and keep your notes useful outside the app.

At a glance

A calm surface for serious pages.

A modern Windows reading room for the moments when a document is more than a document.

  • A

    Pen, highlighter, shapes, eraser, and selection tools.

  • B

    Thumbnails, bookmarks, search, and page-level focus.

  • C

    Comfortable stylus input, including basic Huawei M-Pencil support.

V5.0.0
Current release
WIN
Windows 10 / 11
PDF
Native document

Leave room for your images

The page can show its own evidence.

Replace any filename below with your approved screenshot or mark. The page keeps a quiet fallback until then.

hero-editor.webp1600 × 1000Desktop editor overview
The editor, open and ready
annotation-ink.webp1200 × 800Ink tools detail
Ink close to the thought
textbox-resize.webp1200 × 800Resizable text box
Shape the note to the page
dark-theme.webp1200 × 800Dark paper and chrome
A quieter evening surface
page-templates.webp1200 × 800Page templates
Begin with a page that fits
opennotes-mark.svg512 × 512Product mark
The OpenNotes mark

Design notes

Less chrome. More contact.

A

Paper logic

Pages, margins, tabs, and marks are the structure — not a dashboard around it.

B

Direct hands

A click, a stroke, a drag. The gesture starts where your thought starts.

C

Honest files

Your PDF stays the center of gravity, ready to travel with the notes around it.

For the desk you already have

Make room for the page.

OpenNotes is a focused, open-source PDF annotation workspace for Windows.

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