Free online whiteboard for hand-drawn diagrams

Sketch flowcharts and diagrams in Excalidraw in your browser. Hand-drawn whiteboard style, libraries, PNG and SVG export—no install. Collaboration on excalidraw.com.

What is Excalidraw on Uwarp?

Excalidraw is an open-source virtual whiteboard for hand-drawn diagrams, flowcharts, wireframes, and meeting sketches. On Uwarp you get the Excalidraw editor in your browser—no install— with shapes, arrows, libraries, themes, and PNG or SVG export. It is a practical draw.io alternative when you want a sketch-like feel instead of rigid boxes. Drawing runs client-side in your session; for hosted collaboration and Excalidraw Plus features, see excalidraw.com.

What you can do on Uwarp

Core Excalidraw capabilities—easy whiteboard sketches, diagramming, and PNG/SVG export in the editor above.
  1. Hand-drawn style canvas: Start easy whiteboard drawings for brainstorms and quick visuals—hand-drawn lines without a heavy design tool.

  2. Shapes, arrows, and connectors: Rectangles, diamonds, ellipses, lines, and binding arrows for flowcharts, architecture, and ecosystem diagrams.

  3. Libraries and data-viz starter: Load bundled library items to speed up charts and recurring diagram elements.

  4. PNG, SVG, and scene export: Save images for docs and slides, or load and export scenes from the main menu when you need to iterate later.

  5. Dark mode and canvas background: Toggle theme and background color for long sessions and screenshot-ready output.

  6. Keyboard-first workflow: Shortcuts for power users—duplicate, align, and edit without leaving the keyboard.

How to use Excalidraw on Uwarp

From blank canvas to export—sketch, label, then save PNG, SVG, or scene files.
  1. Open the canvas

    The editor loads at the top of this page. Pick a tool from the left toolbar or use shortcuts.

  2. Draw shapes and connectors

    Drag rectangles, arrows, and lines; bind arrows to shapes so diagrams stay connected when you move them.

  3. Add text and labels

    Double-click shapes or use the text tool for titles, steps, exam-style labels, and annotations.

  4. Use libraries when needed

    Open the library panel for icons and chart blocks, or load a saved scene from the main menu.

  5. Adjust theme and grid

    Enable the grid for alignment; switch light or dark mode from the menu.

  6. Export or save

    Use Save as image or Export in the main menu for PNG, SVG, or scene files.

Tips for better whiteboard diagrams

Keep sketches readable and fast to share—including draw.io-style alternatives and meeting boards.
  • 01

    Start low-fidelity

    Focus on structure and flow first; polish colors and labels after the layout works.

  • 02

    Group related shapes

    Group elements you move together—especially in ecosystem or architecture diagrams.

  • 03

    Use consistent stroke colors

    Assign meaning with color (errors, success paths) so viewers parse the diagram quickly.

  • 04

    Export SVG for docs

    SVG stays sharp in Notion, Confluence, and slide decks; PNG is fine for quick shares.

  • 05

    Try /freehand-draw for SVG paths

    Need pure freehand SVG paths? Uwarp also offers /freehand-draw for hand-drawn line art.

Who this is for

Teams that want a fast virtual whiteboard for diagrams, classes, and interviews.
  1. Product and design: User flows, wireframes, and workshop sketches without opening a full design suite.

  2. Engineering: Architecture, sequence, and ecosystem diagrams during reviews and incident docs—a lighter draw.io alternative when you want sketch-first diagrams.

  3. Educators and students: Exam-style drawings, concept maps, and classroom explanations in the browser.

  4. Meeting facilitators: Live whiteboard drawing during retros, planning, remote interviews, and schema brainstorms.

Why use Excalidraw on Uwarp

Open-source whiteboard in your Uwarp tool stack.
  • No install on this page

    Open /excalidraw and sketch immediately in the browser.

  • Open-source core

    Built on the Excalidraw project—transparent, widely adopted, and extensible.

  • Client-side drawing

    Your scene stays in the browser session unless you export or save files yourself.

  • Figma plugin available

    Import hand-drawn diagrams into Figma via the Uwarp Excalidraw plugin in the Figma Community.

Technical notes

How this page is built.
Package
Uwarp runs @excalidraw/excalidraw in a client-side React panel with grid mode and export actions enabled.
Official product
Hosted collaboration, Excalidraw Plus, and desktop apps live on excalidraw.com—not on this embed-free Uwarp build.
Related Uwarp tools
Pair with /freehand-draw for SVG sketch paths or /handdrawn for rough-style vector conversion.

Sources & References

Authoritative references on the Excalidraw open-source whiteboard project and the vector graphics formats this diagramming tool uses.
  • Excalidraw is an open-source virtual whiteboard for sketching hand-drawn-like diagrams, flowcharts, wireframes, and more. It is licensed under the MIT License.
    Excalidraw GitHub Repository

    Excalidraw — open-source virtual whiteboard: This page embeds the Excalidraw editor directly in the browser, providing shape tools, arrows, libraries, and export without requiring any installation. github.com/excalidraw/excalidraw

  • SVG is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. It is widely used for diagrams and illustrations.
    Wikipedia — SVG

    SVG — Scalable Vector Graphics format: Diagrams can be exported as SVG files, which scale without quality loss for use in documentation, slide decks, and design tools like Figma. en.wikipedia.org/wiki/SVG

  • Open-source whiteboard tools like Excalidraw provide collaborative sketching and diagramming capabilities without proprietary lock-in, supporting PNG, SVG, and scene file exports.
    Excalidraw Documentation

    Open-source whiteboard applications: As a draw.io alternative with a hand-drawn aesthetic, Excalidraw on Uwarp gives teams a free, no-install diagramming solution for flowcharts, architecture sketches, and classroom drawings. excalidraw.com/blog

Frequently Asked Questions

Quick answers about this tool—open a question to read more.