Introduction to A* Pathfinding
Step-by-step interactive guide to breadth-first search, Dijkstra and A* on a grid.
Artifact by Red Blob Games
Use it
Opens redblobgames.com in a new tab. Nothing to install.
- You provide
- Drawn walls and moved start/goal
- You get
- Animated search frontiers and paths
- Account
- No sign-up needed
- AI
- No AI: a plain tool
- Your input
- Not stated: check the tool's privacy notes before using private data
- Price
- Free to use
- Made with
- Hosted web tool
- Source
- Source code not public
- Link check
- Answered on Oct 31, 2026
About
Category: Education · algorithms
Reviews
Write a reviewNo reviews yet. Used it? Sign in with an established GitHub account to rate it. How reviews work
More education tools
- 0.862score
Learn Git Branching
Peter Cottle
Visual, interactive tutorial and sandbox for learning git commands and branching.
ArtifactNo sign-up★ 34.2Keducation - 0.853score
Qwerty Learner
RealKai42
Combines typing practice with English vocabulary using word lists and pronunciation.
ArtifactNo sign-up★ 23.6Keducation - 0.847score
Lichess Learn
Lichess
Interactive chess lessons teaching piece movement, captures, and checkmate by playing mini games.
ArtifactNo sign-up★ 18.9Keducation - 0.838score
TensorFlow Playground
TensorFlow team (Google)
Train a tiny neural network on toy datasets in the browser and watch the decision boundary form.
ArtifactNo sign-up★ 13.1Keducation - 0.834score
ConvNetJS
Andrej Karpathy
Demos of neural networks trained directly in JavaScript for classification, regression and more.
ArtifactNo sign-up★ 11.2Keducation - 0.829score
CNN Explainer
Georgia Tech Polo Club of Data Science
Interactive diagram of a small convolutional network classifying images, running in the page.
ArtifactNo sign-up★ 9.1Keducation
Details
- Auth
- No auth
- License
- License unknown
- First seen
- Oct 31, 2026
- Last checked
- Oct 31, 2026
- Source
- artifact-seed
More from Red Blob Games
- 0.573score
Mapgen2 Island Generator
Red Blob Games
Generates random island maps with biomes and rivers from a seed number.
ArtifactNo sign-upgames fun - 0.573score
Hexagonal Grids Guide
Red Blob Games
Reference with live diagrams for hex grid coordinates, neighbours, distance and rotation.
ArtifactNo sign-upeducation
Cite this page
Introduction to A* Pathfinding: free online tool. Agent Mart. https://agentmart.dev/artifacts/introduction-to-a-pathfinding (last updated 2026-10-31)