¶00 · LLDCanvas Platform
Every tool you need
to ace your LLD interview.
Seventeen features organized around the only thing that matters — going from blank canvas to a design that compiles, under the conditions of the actual interview.
17
Features
110+
LLD Problems
10
Quiz Questions / Day
12
Languages
¶01 · What Is Low-Level Design?
The round that grades your design, not your syntax.
Low-Level Design (LLD) — sometimes called the machine coding round or object-oriented design round — asks you to turn a real system into classes, interfaces, and relationships that actually compile. Where a High-Level Design interview stays at the level of services and databases, an LLD interview wants your UML: inheritance, composition, the design pattern you reached for, and why.
Amazon, Uber, Flipkart, Swiggy, and most product-based companies run LLD rounds specifically to see SOLID principles applied under time pressure. LLDCanvas is built around exactly that loop.
Companies that ask LLD
Amazon, Uber, Flipkart, Swiggy, Ola, Walmart
What you're graded on
SOLID principles, design patterns, UML notation, and reasoning under pressure
When it appears
SDE-2 and senior rounds — often the deciding interview
¶02 · Design Studio · 4 tools
Draw it the way interviewers grade it.
A proper UML canvas, plain-English notation, multi-language execution, and real-time collaboration — the full design stack in one place.
¶03 · Preparation Engine · 5 tools
Structured practice for the round that matters.
Timed sessions, a curated problem library, concept notes, daily drills, and a sequenced roadmap — everything to build the habit alongside the skill.
¶04 · Challenge Labs · 8 modes
Practice that exposes the gap between knowing and doing.
Eight applied challenge modes — each designed around a different kind of pressure you will face in a real LLD round. No blank canvas. No hand-holding.
¶05 · Why We Built This
“Most LLD prep is a PDF of questions and a blank whiteboard. We built the tool we wished we’d had — the diagram, the drill, and the review, in one place.”
FAQ
Questions people ask
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