David LuzarandClaude Fable 5.1 f1a79b73df perf(editor): stop inverting the interactive canvas via CSS filter in dark mode (#12050)
The interactive canvas (selection outlines, transform handles, binding
highlights, collaborator cursors, snap lines, scrollbars) was still
composited through `filter: invert(93%) hue-rotate(180deg)` in dark mode
(#10578 only de-filtered the static canvas). The canvas covers the whole
viewport and repaints on nearly every pointer move, so browsers that
composite in software (Firefox/Zen on software WebRender or with hardware
acceleration disabled) paid for a full-viewport color-matrix pass per frame
and dropped from 120fps to ~40fps during marquee/drag. Light mode was
unaffected.

Colors are now mapped in JS via `applyDarkModeFilter`, like the static
canvas. Hardcoded dark-mode values are the exact post-filter equivalents of
the previous ones, so rendering is unchanged, with two intentional
exceptions:

- collaborator cursors and remote selection outlines render in the
  collaborators' actual colors (matching their avatars) instead of inverted
  ones (per the existing TODO in clients.ts)
- the lasso trail now uses the theme's `--color-selection` like the marquee
  selection, instead of a hardcoded light-theme purple that never matched in
  dark mode

`--color-selection` for the dark theme now holds the actual rendered color
(#b4b0ff); hosts overriding it no longer need to pre-invert.

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-07 11:52:22 +02:00
2024-08-06 13:21:20 +02:00
2020-04-03 19:19:01 +02:00
2024-09-09 17:12:07 +02:00
2020-09-15 21:59:00 +02:00
2025-05-25 21:23:40 +02:00
2023-05-18 16:06:27 +02:00
2025-05-25 21:23:40 +02:00
2020-01-05 13:09:29 -08:00

Excalidraw

Excalidraw Editor | Blog | Documentation | Excalidraw+

An open source virtual hand-drawn style whiteboard.
Collaborative and end-to-end encrypted.


Excalidraw is released under the MIT license. npm downloads/month PRs welcome! Chat on Discord Ask DeepWiki Follow Excalidraw on Twitter

Product showcase

Create beautiful hand-drawn like diagrams, wireframes, or whatever you like.

Features

The Excalidraw editor (npm package) supports:

  • 💯 Free & open-source.
  • 🎨 Infinite, canvas-based whiteboard.
  • ✍️ Hand-drawn like style.
  • 🌓 Dark mode.
  • 🏗️ Customizable.
  • 📷 Image support.
  • 😀 Shape libraries support.
  • 🌐 Localization (i18n) support.
  • 🖼️ Export to PNG, SVG & clipboard.
  • 💾 Open format - export drawings as an .excalidraw json file.
  • ⚒️ Wide range of tools - rectangle, circle, diamond, arrow, line, free-draw, eraser...
  • ➡️ Arrow-binding & labeled arrows.
  • 🔙 Undo / Redo.
  • 🔍 Zoom and panning support.

Excalidraw.com

The app hosted at excalidraw.com is a minimal showcase of what you can build with Excalidraw. Its source code is part of this repository as well, and the app features:

  • 📡 PWA support (works offline).
  • 🤼 Real-time collaboration.
  • 🔒 End-to-end encryption.
  • 💾 Local-first support (autosaves to the browser).
  • 🔗 Shareable links (export to a readonly link you can share with others).

We'll be adding these features as drop-in plugins for the npm package in the future.

Quick start

Note: following instructions are for installing the Excalidraw npm package when integrating Excalidraw into your own app. To run the repository locally for development, please refer to our Development Guide.

Use npm or yarn to install the package.

npm install react react-dom @excalidraw/excalidraw
# or
yarn add react react-dom @excalidraw/excalidraw

Check out our documentation for more details!

Contributing

Integrations

Who's integrating Excalidraw

Google Cloud • Meta • CodeSandbox • Obsidian Excalidraw • Replit • Slite • Notion • HackerRank • and many others

Sponsors & support

If you like the project, you can become a sponsor at Open Collective or use Excalidraw+.

Thank you for supporting Excalidraw

Last but not least, we're thankful to these companies for offering their services for free:

Vercel Sentry Crowdin

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Description
Virtual whiteboard for sketching hand-drawn like diagrams
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