Diagraw is a free collaborative whiteboard for drawing architecture during a system design interview: place load balancers, services, databases, queues and caches on an infinite canvas, in real time, with nothing to install. Share a link and start diagramming in seconds.
A system design round is not about running code: it is about explaining how components connect, where the bottlenecks are and which trade-offs you make. Diagraw is built for that visual conversation.
Interviewer and candidate draw together with live cursors and presence, like a physical whiteboard but remote.
Service and database nodes, reactive arrows that clip to borders and a hand-drawn feel for sketching fast without fighting rigid layouts.
Share a link and the guest joins without signing up. Nothing to install and it runs in the browser during your video call.
Version history lets you revisit how the design evolved, and you can export to PNG, SVG or PDF for feedback or study notes.
Open a session and send the link to the candidate or your practice partner.
Note assumptions, scale and goals on the canvas before drawing the architecture.
Connect components, label protocols and reason about trade-offs while you draw together.
Use history to revisit the evolution and export an image or PDF for feedback.
Not to join: the host shares a link and guests jump in to draw without signing up. Creating an account is only needed to save your own diagrams.
No. Diagraw is the whiteboard for designing and explaining the architecture; it is not a code editor with execution. It is ideal for the visual part of system design.
Yes. Rehearse rounds solo or with a partner, save versions and revisit your designs before the real interview.
