Eight pen types
Pen, pencil, marker, crayon, brush, highlighter, eraser, lasso — each with its own stroke.
Eight pen types
media/eight-pen-types.webm
A Notepad++ for your whiteboard.
Draw in the browser. Save locally. Return whenever — no accounts, no install, no noise.
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Pen tools
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Signups required
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Named tabs
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% browser-native
Zero friction.
Just draw.
A Notepad++ for your whiteboard — open the page, pick a pen, start sketching. Nothing between you and the canvas.
Zero friction
media/zero-friction.webm
Your strokes
don't vanish.
Every board auto-saves in your browser. Close the tab, refresh, come back tomorrow — it's still there.
More More
Strokes don't vanish
media/strokes-dont-vanish.webm
Dark mode
Green-tinted dark theme for late-night sketching without the glare.
Dark mode
media/dark-mode.webm
Color wheel
Swatches for quick picks, custom picker for anything in between — full color control on canvas.
Color wheel
media/color-wheel.webm
Draw & iterate
Sketch ideas fast, undo freely, clear when done — a board that keeps pace.
Draw & iterate
media/draw-iterate.webm
Think in tabs.
A Notepad++ for your whiteboard — multiple named boards, switch in a click, resume mid-thought.
Think in tabs
media/think-in-tabs.webm
A free online whiteboard that stays on your device.
Pencil Box is built for quick thinking — wireframes on a call, math on a tablet, doodles while brainstorming. No signup wall, no cloud upload, no install dialog. Open the tab, draw, and come back later.
Unlike heavy design tools, Pencil Box is a browser drawing board with zero setup. Your boards auto-save in local storage, so a refresh or a closed tab does not wipe your work. Named tabs keep ideas separated the way a code editor keeps files open — a Notepad++ for your whiteboard.
Whether you need a simple sketch pad, a persistent whiteboard for study notes, or a lightweight canvas for team huddles, Pencil Box keeps the tools visible and the friction invisible.
Common questions
Is Pencil Box really free?
Yes. Pencil Box is a free browser whiteboard with no signup, no subscription, and no install. Open the page and start drawing.
Does my work save automatically?
Every board auto-saves in your browser using local storage. Close the tab, refresh, or come back tomorrow — your strokes are still there.
What makes it like Notepad++?
Pencil Box is a Notepad++ for your whiteboard — chrome-style named tabs let you run multiple boards at once and switch between them in one click, the same way you juggle files in a code editor.
Do I need an account?
No accounts required. Pencil Box runs entirely in your browser. Your data stays on your device unless you choose to share it.
Privacy
Pencil Box stores your drawings in your browser's local storage on your device. We do not require an account, and your boards are not uploaded to our servers by default.
If Web Analytics is enabled, anonymous page-view data may be collected to understand usage. No drawing content is included in analytics events. You can clear saved boards anytime by clearing site data for this origin in your browser settings.
Questions? Open an issue on GitHub.
Built by someone
who uses it.
Pencil Box is a personal project by Abhir Mirikar — a browser whiteboard that respects your time, your data, and your flow.
Source Source