What is a Linked List Visualizer?
A linked list visualizer shows each node in a list and the pointer from one node to the next. It is useful for understanding why linked lists behave differently from arrays during insertion, deletion, search, and traversal.
This tool visualizes a singly linked list. Each node stores a value and a next pointer. The final node points to null.
For the full cluster of related tools, browse the Data Structure Visualizers hub.
How to use this linked list visualizer
- Paste values such as
[12, 7, 19, 4, 26]. - Click Build list to render nodes and pointers.
- Insert at the head, tail, or a specific index.
- Delete by index or delete the first matching value.
- Search for a value or run traversal to highlight the visit order.
Unlike a binary search tree or heap, a linked list does not arrange values by priority or ordering rules. The order is exactly the order of the nodes.
Linked list vs array
Arrays give direct index access. A linked list must follow pointers from the head node until it reaches the target node.
Linked lists can be efficient for insertion or deletion once you already have a node reference, but searching by value still requires traversal.
If you want to compare linked lists with tree structures, try the Binary Search Tree Visualizer. If you are studying LIFO and FIFO behavior, compare this with the Stack and Queue Visualizer. For direct key lookup, use the Hash Table Visualizer. To see linked-list recency order with hash-map lookup, use the LRU Cache Visualizer.