Overview
Excalidraw removes every barrier between a diagram in your head and one on screen: open the site, draw boxes and arrows, done. The deliberate hand-drawn style signals ‘conceptual sketch’ honestly, and the .excalidraw file format is JSON you can version in Git.
Why researchers use it
- Zero friction — no account, no install, keyboard-driven speed
- Versionable — scene files are JSON; embed scene data inside exported PNGs/SVGs
- Obsidian plugin — sketch inside your notes, edit any time
Getting started
- Open excalidraw.com and draw — rectangles (R), arrows (A), text (T).
- Export SVG with ’embed scene’ checked so the file stays editable forever.
- For notes integration: the Excalidraw Obsidian plugin is one of the ecosystem’s best.
The honest review
Strengths. The speed-to-clarity ratio is the best of any diagram tool; libraries add AWS/UML/science icon sets; collaboration links work without accounts.
Limitations. The sketchy aesthetic is a choice — some journals and audiences read it as unfinished; precise layout control (exact alignment, spline routing) trails draw.io.
When NOT to use this
Final journal figures usually want the precision aesthetic of Inkscape/TikZ per your visual identity — keep Excalidraw for talks, docs, and thinking, and re-draw the keepers properly.